JPH10182926A - (modified) hydrogenated diene-based copolymer composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a (modified) hydrogenated diene-based copolymer composition improved in characteristics such as low-temperature impact resistance, weather resistance, coating performances, flexibility, zone resistance, etc. SOLUTION: This composition comprises (I) 1-99wt.% of a hydrogenated diene-based copolymer obtained by hydrogenating an (A)-(B) block copolymer, a (A)-(B)-(C) block copolymer or an (A)-(B)-(A) block copolymer [(A): a vinyl aromatic compound polymer block, (B): a conjugated diene polymer or a random copolymer block of a vinyl aromatic compound and a conjugated diene, (C): a tapered block in which the amount of a vinyl aromatic compound is gradually increased in the vinyl aromatic compound and the conjugated diene] or a modified hydrogenated diene-based copolymer obtained by further subjecting the hydrogenated diene-based copolymer to graft polymerization with a functional group-containing unsaturated compound and (II) 99-1wt.% [with the proviso that (I)+(II)=100wt.%] of a polar resin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a special hydrogenated block copolymer, which has excellent workability that can be pelletized by itself, and further has excellent weather resistance, impact resistance, and paintability. The present invention relates to a composition using a (modified) hydrogenated diene-based copolymer suitable for rubber applications and for improving impact resistance, coating properties, adhesion, and flexibility in a composite system.

[0002]

2. Description of the Related Art A diene copolymer having an unsaturated double bond in a polymer is inferior in heat stability, weather resistance and ozone resistance. A method for hydrogenation (hereinafter, referred to as "hydrogenation") is known.
JP, JP-B-45-39275, JP-B-48-
3555, JP-A-56-62805, JP-A-59-133203, and the like. Hydrogenated polymers obtained by these methods exhibit heat resistance, weather resistance, and ozone resistance as expected, and are therefore often used in applications such as resin modification. Other hydrogenated polymers have been proposed, for example, in JP-B-63-14721 and JP-B-48-30151. Further, as a polymer having excellent thermal stability and weather resistance, an ethylene-α-olefin copolymer and the like are known. However, when these polymers are blended with non-polar or polar resins, impact resistance,
It is not sufficient to obtain a composition having a good balance of moldability.

[0003]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned conventional technical problems. In the case of a pellet product, pelletization is easy, the blocking resistance of the pellet is improved, and the heat resistance is improved. It has excellent weather resistance and ozone resistance, and can improve properties such as low temperature impact resistance, weather resistance, paintability, flexibility and ozone resistance as a modifier for other resins. An object of the present invention is to provide a composition using a hydrogenated diene copolymer.

[0004]

The present invention relates to (I) a vinyl aromatic compound polymer block (A) (hereinafter referred to as "block (A)") and a conjugated diene polymer or a vinyl aromatic compound and a conjugated diene. (A)-(B) block copolymer comprising a random copolymer block (B) (hereinafter referred to as “block (B)”), or, if necessary, a vinyl aromatic compound and vinyl of a conjugated diene. Tapered block (C) (C) in which aromatic compounds gradually increase
(Hereinafter referred to as "taper block (C)") (A)-(B)-(C) block copolymer or (A)-comprising vinyl aromatic polymer block (A).
(B)-(A) a block copolymer, wherein the ratio of vinyl aromatic compound / conjugated diene is 5 by weight.
６０60 / 95〜40, the bond content of the vinyl aromatic compound in the component (A) and the component (C) constituted as required is 3 to 3
50% by weight, and the bond content of the vinyl aromatic compound in the component (A) is at least 3% by weight of the total monomers, and the vinyl bond content of the conjugated diene portion in the component (B) is 6%
A hydrogenated diene-based copolymer in which at least 80% of the double bonds of the conjugated diene portion are saturated and the number average molecular weight is from 50,000 to 600,000, And / or the hydrogenated diene copolymer 1
Of the unsaturated compound having at least one functional group selected from the group consisting of an acid anhydride group, a carboxyl group, a hydroxyl group, an amino group and an epoxy group.
Modified hydrogenated diene copolymer graft-polymerized with 20 parts by weight (hereinafter referred to as "(modified) hydrogenated diene copolymer")
Provided is a (modified) hydrogenated diene copolymer composition containing 1 to 99% by weight and (II) 99 to 1% by weight of a polar resin (provided that (I) + (II) = 100% by weight). Is what you do.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The vinyl aromatic compound used in the hydrogenated diene copolymer of the present invention includes styrene, t
-Butylstyrene, α-methylstyrene, p-methylstyrene, divinylbenzene, 1,1-diphenylstyrene, N, N-diethyl-p-aminoethylstyrene,
N, N-diethyl-p-aminoethylstyrene, vinylpyridine and the like can be mentioned, and styrene and α-methylstyrene are particularly preferred. Further, as the conjugated diene, 1,3
-Butadiene, isoprene, 2,3-dimethyl-1,3
-Butadiene, 1,3-pentadiene, 2-methyl-
1,3-pentadiene, 1,3-hexadiene, 4,5
-Diethyl-1,3-octadiene, 3-butyl-1,
3-octadiene, chloroprene and the like,
In order to obtain a hydrogenated diene copolymer which can be industrially used and has excellent physical properties, 1,3-butadiene, isoprene,
1,3-pentadiene is preferred, more preferably 1,3-pentadiene
3-butadiene.

The hydrogenated diene copolymer of the present invention comprises a vinyl aromatic compound polymer block (A) and a conjugated diene polymer or a random copolymer block (B) of a vinyl aromatic compound and a conjugated diene. (A)-(B) block copolymer comprising, or, if necessary, a vinyl aromatic compound and (A)-(B) comprising a taper block (C) in which the vinyl aromatic compound among the conjugated dienes gradually increases. )
-(C) a block copolymer or a (A)-(B)-(A) block copolymer composed of a vinyl aromatic polymer block (A). The ratio of the conjugated diene is 5 to 60/9 by weight.
It is necessary to be 5 to 40, preferably 7 to 40/93 to 60. 5% by weight of vinyl aromatic compound
If less, the modifying effect when the finally obtained hydrogenated diene copolymer and another resin are blended is insufficient,
For example, when blended with polypropylene, there is a problem that the balance between impact resistance and rigidity becomes insufficient. On the other hand, when the content of the vinyl aromatic compound exceeds 60% by weight, it becomes resinous, and when blended with another resin, the effect of improving impact resistance, particularly low temperature impact resistance, is insufficient.

The bonding content of the vinyl aromatic compound in the vinyl aromatic compound polymer block (A) and the optional taper block (C) is 3 to 50% by weight of the total monomers, preferably 5 to 50%. The content of the vinyl aromatic compound in the component (A) is at least 3% by weight, preferably 3 to 20% by weight, based on at least 40% by weight, more preferably 5 to 25% by weight. If the bond content of the component (A) or the vinyl aromatic compound of the component (A) and the component (C) is less than 3% by weight of the total monomers, when the obtained hydrogenated diene copolymer is pelletized, blocking occurs. In addition, when blended with another resin, the appearance of the molded product is inferior. On the other hand, component (A) or (A)
The bond content of the component and the vinyl aromatic compound of the component (C) is 5
If it exceeds 0% by weight, it becomes resinous, and when blended with another resin, the effect of improving impact resistance is insufficient, and particularly, the low-temperature impact resistance is insufficient.

The vinyl bond content of the conjugated diene portion in the conjugated diene polymer or the random copolymer block (B) of the vinyl aromatic compound and the conjugated diene is 60%.
%, Preferably at least 70%, more preferably at least 80%. When the vinyl bond content is 60% or less, the softness improving effect on the resin decreases. In addition,
Here, the vinyl bond means that the conjugated diene compound is 1,2.
Or a monomer unit polymerized by a double bond at the 3,4-bond position.

Further, the hydrogenated diene copolymer of the present invention contains at least 80%, preferably at least 90%, more preferably 95 to 100% of double bonds in the conjugated diene portion of the block (B). It must be added and saturated, and if it is less than 80%, heat resistance, weather resistance and ozone resistance will be poor.

Further, the hydrogenated diene copolymer of the present invention has a number average molecular weight in terms of polystyrene of 50,000 to 600,000, preferably 80,000 to 500,000. If it is outside this range, it is blended with another resin. In the composition, a sufficient modifying effect cannot be obtained. For example, when the number average molecular weight is less than 50,000, the impact resistance of the obtained composition is reduced. On the other hand, when it is more than 600,000, the fluidity and processability are reduced, and the surface appearance is reduced.

[0011] The hydrogenated diene copolymer of the present invention comprises:
The melt flow rate measured at 230 ° C. under a load of 12.5 kg is preferably 0.1 g / 10 min or more, more preferably 0.5 g / 10 min or more, and if less than 0.1 g / 10 min, pelletization is difficult. Becomes

[0012] The hydrogenated diene copolymer of the present invention comprises a block (A), a block (B) and, if necessary, a tapered block (C) or a block (A). Is used as an initiator to carry out living anionic polymerization to obtain a block copolymer, which is then obtained by hydrogenating the block copolymer. As the organic solvent, a hydrocarbon solvent such as pentane, hexane, heptane, octane, methylcyclopentane, cyclohexane, benzene, and xylene is used.

As the organic alkali metal compound as a polymerization initiator, an organic lithium compound is preferable. As the organic lithium compound, an organic monolithium compound, an organic dilithium compound, and an organic polylithium compound are used. Specific examples of these include ethyl lithium, n-propyl lithium, isopropyl lithium, n-butyl lithium, sec-butyl lithium, t-butyl lithium, hexamethylene dilithium, butadienyl lithium, isoprenyl dilithium and the like. And monomer 1
It is used in an amount of 0.02 to 0.2 parts by weight per 00 parts by weight.

At this time, Lewis bases such as ethers and amines, such as diethyl ether, tetrahydrofuran, propyl ether, butyl ether, higher ethers, and the like, are used as regulators of the microstructure, ie, the vinyl bond content of the conjugated diene moiety. Ether derivatives of polyethylene glycol such as ethylene glycol dibutyl ether, diethylene glycol dimethyl ether, diethylene glycol dibutyl ether, and triethylene glycol dimethyl ether; examples of amines include tertiary amines such as tetramethylethylene diamine, pyridine and tributylamine; Used.

Further, the polymerization reaction is usually carried out at a temperature of -30.degree.
Performed at 50 ° C. Further, the polymerization may be carried out while controlling at a constant temperature, or may be carried out at an elevated temperature without removing heat.

The block copolymer may be formed by any method. Generally, the block (A) or the block (B) is first polymerized in the organic solvent by using a polymerization initiator such as the alkali metal compound. Then, the block (B) or the block (A) is polymerized. It does not matter which of the block (A) or the block (B) is polymerized first. Further, the boundary between the block (A) and the block (B) does not necessarily need to be clearly distinguished. (A)-(B)-(C) block copolymer;
Alternatively, to obtain the (A)-(B)-(A) block copolymer, an aromatic vinyl compound is added using an organolithium initiator in an organic solvent to polymerize the block (A), and then to polymerize the block (A). A block (B) is prepared by adding a conjugated diene or a conjugated diene and an aromatic vinyl compound, and a taper block (C) or a block (A) is formed by adding a conjugated diene and an aromatic vinyl compound or an aromatic vinyl compound. May be polymerized. In this case, a method in which the taper block (C) or the block (A) is first polymerized, and then the block (B) and then the block (A) may be polymerized.

The (A)-(B) block copolymer, (A)-(B)-(C) block copolymer or (A)-(B)-(A) block thus obtained The copolymer may be a block copolymer having a polymer molecular chain extended or branched as represented by the following general formula by adding a coupling agent. [(A)-(B)] n-X, [(A)-(B)-(C)] n-X, or [(A)-(B)-(A)] n-X , (A), (B) and (C) are the same as above, and n is 2
X represents an integer of 4 to 4 and represents a coupling agent residue. ]

As the coupling agent at this time, for example, diethyl adipate, divinylbenzene, tetrachlorosilicon, butyltrichlorosilicon, tetrachlorotin,
Butyltrichlorotin, dimethylchlorosilicon, tetrachlorogermanium, 1,2-dibromoethane, 1,4
-Chloromethylbenzene, bis (trichlorosilyl) ethane, epoxidized linseed oil, tolylene diisocyanate, 1,2,4-benzenetriisocyanate and the like.

The content of the vinyl aromatic compound in the block copolymer is controlled by the amount of the monomer supplied during the polymerization in each step, and the content of the vinyl bond in the conjugated diene varies the components of the microcontroller. Is adjusted by Further, the number average molecular weight and the melt flow rate are adjusted by the addition amount of a polymerization initiator, for example, n-butyllithium.

The hydrogenated diene copolymer of the present invention is obtained by dissolving the block copolymer thus obtained in an inert solvent, at 20 to 150 ° C. and under a hydrogen pressure of 1 to 100 kg / cm ² . In the presence of a hydrogenation catalyst. Inert solvents used for hydrogenation include hydrocarbon solvents such as hexane, heptane, cyclohexane, benzene, toluene and ethylbenzene, and polar solvents such as methyl ethyl ketone, ethyl acetate, ethyl ether and tetrahydrofuran.

As the hydrogenation catalyst, dicyclopentadienyl titanium halide, nickel organic carboxylate,
Hydrogenation catalyst comprising an organic nickel carboxylate and an organometallic compound of Groups I to III of the Periodic Table, carbon, silica,
Nickel, platinum, palladium, ruthenium, rhenium, rhodium metal catalysts supported on diatomaceous earth or the like, cobalt, nickel, rhodium, ruthenium complexes, or lithium aluminum hydride, p-toluenesulfonyl hydrazide, and further Zr-Ti-Fe-V −Cr
Alloy, Zr-Ti-Nb-Fe-V-Cr alloy, LaN
such hydrogen storage alloy such as i ₅ alloys.

The hydrogenation rate of the double bond in the conjugated diene portion of the block (B) of the hydrogenated diene copolymer of the present invention depends on the amount of the hydrogenation catalyst, the amount of the hydrogenated compound added, or the amount of hydrogen added during the hydrogenation reaction. It is adjusted by changing the pressure and the reaction time. Remove catalyst residues from the hydrogenated block copolymer solution, add a phenolic or amine antioxidant, and easily isolate the hydrogenated diene copolymer from the polymer solution. Can be. Isolation of the hydrogenated diene copolymer is carried out by, for example, a method of adding acetone or alcohol to the copolymer solution to cause precipitation, a method of adding the polymer solution to boiling water with stirring, and removing the solvent by distillation. It can be carried out.

The modified hydrogenated diene copolymer of the present invention is obtained by introducing a functional group into the hydrogenated diene copolymer. Examples of the unsaturated compound for introducing a functional group into the hydrogenated diene copolymer include at least one functional group selected from the group consisting of an acid anhydride group, a carboxyl group, a hydroxyl group, an amino group and an epoxy group. A compound having the following formula:

Specifically, examples of the unsaturated compound having an acid anhydride group or a carboxyl group include acrylic acid, methacrylic acid, ethacrylic acid, maleic acid, maleic anhydride, fumaric acid, itaconic acid, itaconic anhydride, and hymic acid. Α, β-unsaturated carboxylic acids such as acids and hymic anhydrides or anhydrides thereof. Examples of the unsaturated compound having a hydroxyl group include hydroxypropyl (meth) acrylate and hydroxyethyl (meth) acrylate.

As the unsaturated compound having an amino group,
Examples thereof include diethylaminomethyl (meth) acrylate, dimethylaminoethyl (meth) acrylate, and vinylpyridine. Examples of the unsaturated compound having an epoxy group include glycidyl (meth) acrylate, allyl glycidyl ether, and vinyl glycidyl ether. Of these, unsaturated compounds containing an acid anhydride group or a carboxyl group are preferred because of the ease of performing the addition reaction to the hydrogenated diene-based copolymer, and unsaturated compounds containing an acid anhydride group are particularly preferred. Is particularly preferred.

The amount of these unsaturated compounds added to the hydrogenated diene copolymer is 100 parts by weight of the copolymer.
The amount is 0.01 to 20 parts by weight, preferably 0.2 to 5 parts by weight. If the amount is less than 0.01 part by weight, the effect of improving the impact resistance, chemical resistance and coating property by introducing a functional group is not sufficient.
If the amount is more than the weight part, characteristics such as electric characteristics and moisture resistance are lowered.

The addition reaction of unsaturated compounds having various functional groups to the hydrogenated diene copolymer is described in JP-B-39-197.
The method described in Japanese Patent No. 6384 can be used. That is, instead of the olefin rubber, the hydrogenated diene copolymer of the present invention can be used to react by mixing and heating various functional group-containing unsaturated compounds in a solid state. The method of mixing and heating may be either a method using a closed kneader or a method in which a continuous heating reaction is performed using an extruder. At this time, a peroxide can be used in combination to promote the reaction, and a stabilizer can be used if necessary.

The above-mentioned (modified) hydrogenated diene-based copolymer (hydrogenated diene-based copolymer and / or modified hydrogenated diene-based copolymer) of the present invention may contain a conventional auxiliary additive component such as an antioxidant. Agents, heat stabilizers, ultraviolet absorbers, lubricants, coloring agents, flame retardants and the like can be added. The (modified) hydrogenated diene copolymer of the present invention is used alone or as various resin modifiers, and is useful for automotive parts, electric / electronic parts, films, sheet products and the like.

The (modified) hydrogenated diene copolymer composition of the present invention contains the above (I) (modified) hydrogenated diene copolymer and (II) a polar resin. Other copolymer rubbers can be blended and used. (I)
Blend with (modified) hydrogenated diene copolymer (II)
The ratio of the polar resin is 1 to 99% by weight, preferably 3 to 9% by weight.
0% by weight, and the optimum mixing ratio varies depending on the purpose of use. However, the modification effect of the (I) (modified) hydrogenated diene-based copolymer of the present invention cannot be exhibited by adding less than 1% by weight.

Here, as the (II) polar resin used in the present invention, thermoplastic resin such as ABS resin, acrylic resin, polyacrylamide, polyacrylic acid, polymethyl acrylate, polyethyl acrylate, etc. Alkyl acrylate, polyacrylonitrile, acrylonitrile-styrene copolymer, polymethacrylamide, polymethacrylic acid, polymethacrylic acid alkyl ester such as polymethyl methacrylate, polyethyl methacrylate, polymethacrylonitrile, acetal resin, polyoxy Methylene, ionomer, chlorinated polyethylene, coumarone-indene resin, regenerated cellulose,
Petroleum resin, cellulose derivative, alkali cellulose, cellulose ester, cellulose acetate, cellulose acetate butyrate, cellulose xanthate, cellulose nitrate, cellulose ether, carboxymethyl cellulose, cellulose ether ester, fluororesin, FEP, polychlorotrifluoroethylene, poly Aliphatic polyamides such as tetrafluoroethylene, polyvinylidene fluoride, polyvinyl fluoride, nylon 11, nylon 12, nylon 6, nylon 6,10, nylon 6,12, nylon 6,6, and nylon 4,6; polyphenylene isophthalamide; Aromatic polyamide such as polyphenylene terephthalamide, meta-xylylenediamine, polyimide, polyphenylene sulfide, polyether ether ketone Polyamideimide, polyarylate, polyethylene terephthalate, polyvinylidene chloride, polyvinyl chloride, chlorinated polyethylene, chlorosulfonated polyethylene, polycarbonate, CR-39,
Polysulfone, polyether sulfone, polysulfonamide, polyvinyl alcohol, polyvinyl ester, polyvinyl cinnamate, polyvinyl acetate, polyvinyl ether, polyisobutyl vinyl ether, polymethyl vinyl ether, polyphenylene oxide, polybutylene terephthalate, etc., and also as thermosetting plastics ,
Amino resin, aniline resin, urea resin, polysulfonamide, melamine resin, allyl resin, diallyl phthalate resin, alkyd resin, epoxy resin, silicone resin, vinyl ester resin, phenol resin, novolak resin, resorcinol resin, unsaturated polyester resin, Low-shrinkage unsaturated polyester, furan resin and the like can be mentioned. Among them, preferred (II) polar resins are polyamide, polyacetal, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polysulfone, polyphenylene oxide, epoxy resin and phenol resin.

The blend ratio of the (I) (modified) hydrogenated diene copolymer of the present invention to the (II) polar resin is from 1 to 99% by weight / 99 to 1% by weight. In order to fully exert the effect of modifying the component (II) by adding
The blend ratio of the component (I) is preferably 3 to 60% by weight, and more preferably 5 to 50% by weight. If the blending ratio of the component (I) is low, it is difficult to obtain a sufficient modifying effect, and if the blending ratio of the component (I) is too high, the inherent performance of the component (II) tends to be impaired.

First, the composition of (I) (modified) hydrogenated diene copolymer and (II) thermoplastic polar resin will be described below. That is, (I) of the present invention (denatured)
The hydrogenated diene copolymer (II) provides a composition excellent in the mechanical strength and impact resistance of a thermoplastic polar resin and excellent in appearance of a molded article. This composition of the present invention is a styrene-butadiene random copolymer conventionally used,
Compared with styrene-butadiene block copolymer, polybutadiene, etc., they exhibit high modifying properties.

For example, when the (modified) hydrogenated diene-based copolymer (I) of the present invention is blended with a thermoplastic polyester, it is effective in improving the releasability, and when blended with a polyamide, the heat resistance is lowered. And when blended with polyphenylene sulfide, a composition with good processability can be obtained. In producing a composition of (I) a (modified) hydrogenated diene copolymer and (II) a thermoplastic polar resin, the modified hydrogenated diene copolymer has excellent compatibility with the (II) polar resin. When a hydrogenated diene copolymer is used, it is more preferable to compatibilize or use a compatibilizer from the viewpoints of impact resistance and surface appearance of a molded article.

As a method of compatibilization, an acid anhydride group, a kneaded diene copolymer and a (II) polar resin are kneaded.
A method of adding an unsaturated compound having at least one functional group selected from the group consisting of a carboxyl group, a hydroxyl group, an amino group, an epoxy group, an oxazoline group and an imide group, and a peroxide, if necessary, or A method in which the unsaturated compound having a functional group and the peroxide are added to the hydrogenated diene-based copolymer, and the mixture is heated and grafted, and then blended with the component (II). There is a method using a polymer as a compatibilizer. Examples of the polymer having the functional group include random, block and graft copolymers of the unsaturated compound having the functional group with another vinyl monomer copolymerizable therewith.

Examples of the specific copolymer include styrene-glycidyl methacrylate copolymer, styrene-
Styrene such as a maleic anhydride copolymer, a styrene-methacrylic acid copolymer, a styrene-acrylonitrile-methacrylic acid copolymer and the above functional group-containing unsaturated compound and, if necessary, other vinyl monomers copolymerizable therewith. It is a copolymer with one or more monomers. Examples of other functional group-containing copolymers include ethylene such as ethylene-glycidyl methacrylate copolymer, ethylene-glycidyl methacrylate-vinyl acetate copolymer and the functional group-containing unsaturated compound, and Is a copolymer with one or more other vinyl monomers copolymerizable with
Further, those obtained by graft reaction of these ethylene copolymers with other polymers are also included. Examples of the other polymer subjected to the graft reaction include radically polymerizable vinyl monomers such as poly (meth) acrylic acid alkyl ester, polystyrene, styrene-acrylonitrile copolymer, and styrene- (meth) acrylic acid alkyl ester copolymer. There is a polymer polymerized using a monomer, and further includes those obtained by copolymerizing the above-mentioned unsaturated compound having a functional group.

Further, as the copolymer as a compatibilizer, a copolymer of butadiene with the above-mentioned functional group-containing unsaturated compound and, if necessary, another vinyl monomer copolymerizable therewith, and hydrogenated hydrogen thereof There are additives as well as grafts as described above. In the production of the composition of the modified hydrogenated diene copolymer and the thermoplastic (II) polar resin, kneading the unsaturated compound having a functional group according to the compatibilizing method and, if necessary, peroxide. By adopting a method of sometimes adding and a method of using a compatibilizer, compatibility and physical properties are further improved. The amount of the compatibilizer used is 0.1 part by weight based on 100 parts by weight of the total amount of the polar resin and the hydrogenated diene copolymer.
01 to 400 parts by weight, more preferably 0.1 to 100 parts by weight
If the amount is less than 0.01 part by weight, a sufficient compatibilizing effect cannot be obtained, while if it is more than 400 parts by weight, physical properties are reduced.

In addition to adding the compatibilizer to the composition of (I) (modified) hydrogenated diene copolymer of the present invention and (II) thermoplastic polar resin, another rubbery polymer is added. They can be used together. Examples of the rubbery polymer include polybutadiene, acrylonitrile-butadiene copolymer and / or hydrogenated product thereof, ethylene-α-olefin copolymer,
Ethylene-α-olefin-polyene copolymer, polyacrylate, styrene-butadiene block copolymer, hydrogenated styrene-butadiene block copolymer,
Styrene-grafted ethylene-propylene elastomer,
There are ethylene ionomers and the like, and these are used alone or in combination of two or more. In addition, styrene-butadiene block copolymer includes ABA type, ABA taper type,
Radial teleblock type etc. are included.

The composition of the present invention (I) (modified) hydrogenated diene copolymer and (II) thermoplastic polar resin can be prepared by various extruders, Banbury mixers, kneaders, rolls, etc. It can be obtained by kneading the components in a temperature range of 350 ° C. In the kneading, each component may be kneaded at once, or a multi-stage kneading method may be adopted in which after kneading arbitrary components, the remaining components are added and kneaded. A preferred kneading method is a method using a continuous kneader and an extruder in combination, or a method using an extruder. As the extruder, a biaxial co-rotating extruder is particularly preferable.

When using the thermoplastic resin composition comprising the (I) (modified) hydrogenated diene copolymer of the present invention and the (II) thermoplastic polar resin, glass fibers, carbon fibers, metal fibers, glass beads are used. Known fillers such as, asbestos, mica, calcium carbonate, potassium titanate whisker, talc, aramid fiber, barium sulfate, glass flake, and fluororesin can be used alone or in combination. Among these fillers, those having a fiber diameter of 6 to 60 μm and a fiber length of 30 μm or more are preferable as the shape of glass fiber or carbon fiber. These fillers are used in order to obtain the effect of adding the filler.
The content is preferably 5 to 150 parts by weight with respect to parts by weight. In addition, known additives such as a flame retardant, an antioxidant, a plasticizer, a coloring agent, and a lubricant can be used. Further, other known polymers can be appropriately blended according to required performance.

The thermoplastic resin composition of the present invention comprising the component (I) and the component (II) is prepared by injection molding, sheet extrusion,
It can be used as various molded articles by vacuum molding, hetero-formed form, foam molding and the like. The various molded products obtained by the molding method can be used for exterior and interior members of automobiles, various electric and electronic parts, housings, etc. by utilizing their excellent properties.

Next, the composition of the (I) (modified) hydrogenated diene copolymer of the present invention and (II) a thermosetting polar resin will be described below. That is, (I) of the present invention (denatured)
The hydrogenated diene-based copolymer (II) can provide a composition having excellent strength and impact resistance of the thermosetting polar resin, and excellent heat resistance and electrical insulation. This composition exhibits higher modification properties than conventionally used acrylonitrile-butadiene rubber, carboxyl group-containing acrylonitrile-butadiene rubber and the like.

In producing the composition of the (I) (modified) hydrogenated diene copolymer and (II) the thermosetting polar resin, if the modified hydrogenated diene polymer is used, the compatibility is high. As the component (I), a modified hydrogenated diene copolymer is preferred. As the functional group-containing unsaturated compound which is an addition reaction (grafting reaction) component of the modified hydrogenated diene-based copolymer, an unsaturated compound containing an acid anhydride group or a carboxyl group can be used because of easy easiness of the addition reaction operation. Preferred are, among others, unsaturated compounds containing an acid anhydride group. That is, unsaturated compounds containing an acid anhydride group are widely used as curing agents for thermosetting resins, mainly in epoxy resin applications, and even if they remain as unreacted monomers, they have an adverse effect on thermosetting resins. Is not given.

The method of mixing the (I) (modified) hydrogenated diene-based copolymer with the (II) thermosetting polar resin is not limited at all, depending on the mixing ratio of the components (I) / (II). A closed mixer such as a Banbury mixer, a roll, an extruder, or the like can be used. Further, (I) of the present invention
The mixture composition of the (modified) hydrogenated diene-based copolymer and (II) the thermosetting polar resin may contain an anti-aging agent, a stabilizer, a plasticizer, a softener, various inorganic and organic fillers, if necessary. A reinforcing agent, a crosslinking agent and the like can be blended and used. Thus, the composition comprising (I) the (modified) hydrogenated diene-based copolymer and (II) the thermosetting polar resin as the main components obtained according to the present invention is mainly used for coating electronic components. Widely used for materials, casting agents, molding materials, adhesives, paints, etc.

[0044]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples. However, unless the gist of the present invention is exceeded, the present invention
It is not limited by such an embodiment. In the examples, parts and% are by weight unless otherwise specified. Various measurements in the examples were based on the following methods.

The bound styrene content was determined by infrared analysis based on the absorption of the phenyl group at 679 cm ^-1 . The vinyl bond content was calculated by the Hampton method using infrared analysis. The hydrogenation rate is 100 MHz using ethylene tetrachloride as a solvent,
^It was calculated from the ¹ H-NMR spectrum. The molecular weight was determined by gel permeation chromatography (GPC) at 135 ° C. using trichlorobenzene as a solvent.
It was determined in terms of polystyrene. Melt flow rate is J
According to IS K7210, 230 ° C, load 12.5kg
Or it measured with a load of 2.16 kg.

The pellet blocking test was 55 m
mφ, using a uniaxial extruder and a hot cutter, produce round pellets, and load 30 g / cm in a 40 ° C constant temperature bath.
^{2. From} the mass of pellets after 24 hours, the pellets were ranked as follows. ◎: hardly hardened, easily falling apart. ；: It hardens slightly, but can be relatively easily unraveled. ×: Hardened and difficult to loosen.

The addition amount of the unsaturated compound having a functional group (modified monomer) was measured for ν _{c = O} (stretching vibration of carboxyl group) by a calibration curve method using an infrared absorption spectrum. The flexural modulus was measured according to JIS K7203. The Izod impact strength was measured for a notched injection molded product according to JIS K7110. The Izod impact strength after heat aging was evaluated by placing it in a gear oven set at 150 ° C. for 120 hours or 70 hours, cooling to room temperature, and evaluating the impact resistance according to the above.

The appearance of the molded product was visually evaluated according to the following criteria. ；: Good appearance. X: Poor appearance phenomena such as pearly luster, flow mark, and rough surface.

Reference Example 1 (Production of hydrogenated diene copolymer Q-1) In a 10-liter autoclave, 5,000 g of degassed and dehydrated cyclohexane, 1,3-butadiene 9
50 g were charged, 200 g of tetrahydrofuran and 0.3 g of n-butyllithium were added, and adiabatic polymerization from 10 ° C. was performed. 45 minutes later, 50 g of styrene was added, and polymerization was further performed. Then, the reaction solution was heated to 70 ° C., 1.5 g of n-butyllithium and 1.5 g of 2,6-di-t-butyl-p-cresol were added, and 0.5 g of bis (cyclopentienyl) titanium dichloride and diethyl Add 2 g of aluminum chloride, hydrogen pressure 10 kg / cm
Hydrogenated with ² for 1 hour. The reaction solution was returned to normal temperature and normal pressure, extracted from the autoclave, stirred and poured into water, and then the solvent was removed by steam distillation to obtain a hydrogenated polymer. The hydrogenation rate of the obtained hydrogenated polymer is 98%, the number average molecular weight is 295,000, 230 ° C., 12.5 kg
The melt flow rate measured at a load of 2.0 g / 10
Minutes. The butadiene portion of the polymer before hydrogenation had a vinyl bond content of 81%.

Reference Example 2 (Production of hydrogenated diene copolymer Q-2) In a 10-liter autoclave, 5,000 g of degassed and dehydrated cyclohexane, 1,3-butadiene 9
100 g, 60 g of styrene, 200 g of tetrahydrofuran and 0.3 g of n-butyllithium were added to give 10 g
Adiabatic polymerization from ℃ was carried out. After 45 minutes, styrene 40
g was added and polymerization was further performed. Next, a hydrogenation reaction was performed in the same manner as in Reference Example 1. The hydrogenation rate of the obtained hydrogenated polymer was 97%, the number average molecular weight was 310,000,
The melt flow rate measured at 230 ° C. under a load of 12.5 kg was 2.3 g / 10 minutes. Before the hydrogenation, the vinyl bond content of the butadiene portion of the polymer was 80%.

Reference Example 3 (Production of hydrogenated diene copolymer Q-3) In an autoclave having an internal volume of 10 liters, 5,000 g of degassed and dehydrated cyclohexane and 150 g of styrene were charged, and 200 g of tetrahydrofuran and n-butyllithium were added. 0.3 g was added, and adiabatic polymerization from 50 ° C. was performed for 30 minutes. After the temperature of the reaction solution was 10 ° C., 600 g of 1,3-butadiene was added, polymerization was performed, and 90 g of styrene was further added.
90 g of 1,3-butadiene was added to carry out polymerization. Next, a hydrogenation reaction was performed in the same manner as in Reference Example 1. The hydrogenated polymer obtained had a hydrogenation rate of 98%, a number average molecular weight of 289,000, and a melt flow rate measured at 230 ° C and a load of 12.5 kg of 1.3 g / 10 min.
The butadiene portion of the polymer before hydrogenation had a vinyl bond content of 77%.

Reference Example 4 (Production of hydrogenated diene copolymer Q-4) In an autoclave having an internal volume of 10 liters, 5,000 g of degassed and dehydrated cyclohexane and 40 g of styrene were charged, and 200 g of tetrahydrofuran and n-butyllithium were added. 0.3 g was added, and adiabatic polymerization from 50 ° C. was performed for 30 minutes. After the temperature of the reaction solution was 10 ° C., 1,3-butadiene 6
Polymerization was carried out by adding 00 g and 170 g of styrene, and 95 g of styrene and 95 g of 1,3-butadiene were further added to carry out polymerization. Next, a hydrogenation reaction was performed in the same manner as in Reference Example 1. The hydrogenation rate of the obtained hydrogenated polymer is 99%,
Number average molecular weight is 292,000, 230 ° C, 12.5k
The melt flow rate measured under a load of g is 1.2 g / 1
It was 0 minutes. Further, the butadiene portion of the polymer before hydrogenation had a vinyl bond content of 78%.

Reference Example 5 (Production of hydrogenated diene copolymer Q-5) In an autoclave having an internal volume of 10 liters, 5,000 g of degassed and dehydrated cyclohexane and 100 g of styrene were charged, and 150 g of tetrahydrofuran and n-butyllithium were added. 0.8 g was added, and adiabatic polymerization from 50 ° C. was performed for 30 minutes. After the temperature of the reaction solution was set to 10 ° C., 700 g of 1,3-butadiene was added for polymerization, and 100 g of styrene was further added for polymerization. Next, a hydrogenation reaction was performed in the same manner as in Reference Example 1. The hydrogenation rate of the obtained hydrogenated polymer was 98%, the number average molecular weight was 115,000, 230 ° C,
The melt flow rate measured at a load of 2.5 kg is 0.1.
It was 7 g / 10 minutes. The butadiene portion of the polymer before hydrogenation had a vinyl bond content of 65%.

Reference Example 6 (Production of hydrogenated diene copolymer Q-6) In a 10-liter autoclave, 5,000 g of degassed and dehydrated cyclohexane and 125 g of styrene were charged, and 200 g of tetrahydrofuran and n-butyllithium were added. 0.8 g was added, and adiabatic polymerization from 50 ° C. was performed for 30 minutes. After the temperature of the reaction solution was set to 10 ° C., 700 g of 1,3-butadiene and 50 g of styrene were added for polymerization, and 125 g of styrene was further added for polymerization. Then, Reference Example 1
A hydrogenation reaction was carried out in the same manner as described above. The hydrogenated polymer obtained had a hydrogenation rate of 97% and a number average molecular weight of 110,00.
The melt flow rate measured at 0, 230 ° C. and 12.5 kg load was 1.1 g / 10 min. The vinyl bond content of the butadiene portion of the polymer before hydrogenation was 77
%Met.

Reference Example 7 (Production of hydrogenated diene copolymer Q-7) In an autoclave having an internal volume of 10 liters, 5,000 g of degassed and dehydrated cyclohexane and 150 g of styrene were charged, and 200 g of tetrahydrofuran and n-butyllithium were added. 0.8 g was added, and adiabatic polymerization from 50 ° C. was performed for 30 minutes. After the reaction solution was brought to 10 ° C., 700 g of 1,3-butadiene was added to carry out polymerization, and 150 g of styrene was further added.
Was added to carry out polymerization. Next, a hydrogenation reaction was performed in the same manner as in Reference Example 1. The hydrogenated polymer obtained had a hydrogenation rate of 99% and a number average molecular weight of 110,000, 230.
The melt flow rate measured at 1 ° C. under a load of 12.5 kg was 2.5 g / 10 min. Further, the vinyl bond content of the butadiene portion of the polymer before hydrogenation was 85%.

Comparative Reference Example 1 (hydrogenated diene copolymer Q-
8) In a 10 liter autoclave, 5,000 g of degassed and dehydrated cyclohexane, 300 g of styrene,
700 g of 1,3-butadiene was charged, 19.0 g of tetrahydrofuran and 0.3 g of n-butyllithium were added, and adiabatic polymerization from 30 ° C. was performed. Then, Reference Example 1
A hydrogenation reaction was carried out in the same manner as described above. The hydrogenated polymer obtained had a hydrogenation rate of 97% and a number average molecular weight of 155,00.
The melt flow rate measured at 0, 230 ° C. and 12.5 kg load was 0.05 g / 10 min. The vinyl bond content of the butadiene portion of the polymer before hydrogenation was 4%.
7%.

Comparative Reference Example 2 (hydrogenated diene copolymer Q-
9) In a 10-liter autoclave, 5,000 g of degassed and dehydrated cyclohexane and 150 g of styrene were charged, and 16.9 g of tetrahydrofuran and 0.3 g of n-butyllithium were added. went. After 30 minutes, 700 g of 1,3-butadiene was added for polymerization, and then 150 g of styrene was further added for polymerization for 30 minutes. Next, a hydrogenation reaction was performed in the same manner as in Reference Example 1. The hydrogenation rate of the obtained hydrogenated polymer was 98.
%, Number average molecular weight is 140,000, 230 ° C, 12.
The melt flow rate measured under a load of 5 kg is 0.08
g / 10 minutes. Before the hydrogenation, the vinyl bond content of the butadiene portion of the polymer was 42%.

Comparative Reference Example 3 (hydrogenated diene copolymer Q-
Production of 10) Polymerization and hydrogenation were carried out in the same manner as in Reference Example 1 except that the amount of n-butyllithium was reduced to 0.05 g and the amount of tetrahydrofuran to 16.9 g, to obtain a hydrogenated random copolymer. The hydrogenation rate of the obtained hydrogenated polymer was 95%, the number average molecular weight was 635,000, and the melt flow rate measured at 230 ° C under a load of 12.5 kg was 0.03 g / 10 min. The butadiene portion of the polymer before hydrogenation had a vinyl bond content of 41%.

Comparative Reference Example 4 (hydrogenated diene copolymer Q-
Preparation of 11) In a 10-liter autoclave, 5,000 g of degassed and dehydrated cyclohexane and 150 g of styrene were charged, and 17 g of tetrahydrofuran and 0.8 g of n-butyllithium were added, followed by 30 adiabatic polymerization from 50 ° C. After that, 700 g of 1,3-butadiene was added and polymerization was performed.
Further, 150 g of styrene was added for polymerization. Then
A hydrogenation reaction was performed in the same manner as in Reference Example 1. The hydrogenation rate of the obtained hydrogenated polymer is 99%, and the number average molecular weight is 10%.
The melt flow rate measured at 000, 230 ° C. and 12.5 kg load was 0.38 g / 10 min. The vinyl bond content of the butadiene portion of the polymer before hydrogenation was 40%. Tables 1 to 3 show properties of the hydrogenated polymers of Reference Examples 1 to 7 and Comparative Reference Examples 1 to 4. Table 1
As is clear from 2, the hydrogenated diene-based copolymer used in the present invention has an excellent processability such that it can be simply pelletized.

[0060]

[Table 1]

[0061]

[Table 2]

[0062]

[Table 3]

Reference Examples 8 to 12 (Production of Modified Hydrogenated Diene Copolymer) The hydrogenated diene copolymers Q-1 to Q-1 obtained in Reference Examples 1 to 4 were prepared.
Graft polymerization was performed using Q-4 according to the following procedure to obtain a modified hydrogenated diene-based copolymer.
That is, 100 parts of the hydrogenated diene copolymer Q-1 was mixed with a closed small kneader (HAAKE BU) adjusted to 190 ° C.
CHALER HAAKE RHEOCORDSYSTEM 40RHEOMIX MIXER 6
After 2 minutes, 2.5 parts of maleic anhydride was added and mixed, and then an organic peroxide [2,5-dimethyl-
0.15 parts of 2,5-di (t-butylperoxy) hexane, manufactured by NOF CORPORATION, Perhexa 25B], and kneading was continued for 5 minutes to obtain a graft of maleic anhydride shown in Table 4. Thus, a modified hydrogenated diene copolymer Q-12 was obtained. Q-13 to Q-16 were produced in the same manner. Table 4 shows the characteristics of Q-12 to Q-16. Q-12
16 is a modified hydrogenated diene copolymer used in the present invention.

[0064]

[Table 4]

Examples 1 to 5 and Comparative Examples 1 to 4 (Production of Compositions of Modified Hydrogenated Diene Copolymer and Thermosetting Polar Resin) Modified hydrogenated diene obtained in Reference Examples 8 to 12 above Using the system copolymers Q-12 to Q-16, a thermosetting resin composition (epoxy resin composition) was obtained according to the following procedure (Examples 1 to 5). Formulation (part) Modified hydrogenated diene copolymer 10 Cresol novolak type epoxy resin (epoxy equivalent 220); 100 Phenol resin (novolak type); 50

The above-mentioned composition is kneaded at about 80 ° C. using a closed mixer, press-formed at 160 ° C., and the obtained plate is processed by milling.
A sample for evaluating physical properties was prepared. In contrast, Comparative Example 1
Is the unhydrogenated diene copolymer in Reference Example 1 in place of the modified hydrogenated diene copolymer Q-12, and Comparative Example 2 is a liquid carboxy NBR (BF Goodrich, H
ycar CTBN) and Comparative Example 3 were similarly made of acrylonitrile-butadiene rubber [JS, manufactured by Nippon Synthetic Rubber Co., Ltd.
RN220S, bound acrylonitrile content = 41%,
Mooney viscosity 56] was evaluated in Comparative Example 4 by preparing an epoxy resin composition in the same manner as in Example 1 except that the modified hydrogenated diene copolymer Q-12 was not used. The evaluation results are shown in Tables 5 and 6. As is clear from the comparison between Examples 1 to 5 in Table 5 and Comparative Examples 1 to 4 in Table 6, the epoxy resin composition according to the present invention has good mechanical strength, heat resistance, flexibility, and molding. It turns out that it is excellent.

[0067]

[Table 5]

[0068]

[Table 6]

* 1) 150 ° C. × 120 hours Example 6 Modified hydrogenated diene copolymer Q-12 used in Example 1
Was used to obtain a phenol resin composition in the following procedure. Formulation (parts) Q-12 10 Phenol resin (novolak type); 100 According to the formula, kneading is performed at 130 ° C. for 5 minutes with an electric heating roll, followed by pulverization, and press molding at 160 ° C. for 10 minutes to obtain a thickness. A molded plate having a thickness of 4 mm was obtained. This is J
A test piece was prepared by processing with a milling machine according to IS K6911. Table 7 shows the evaluation results.

Examples 7 to 10 Modified hydrogenated diene copolymer Q-12 used in Example 6
And a phenol resin composition was obtained in the same manner as in Example 6, except that the above-mentioned Q-13 to Q-16 were used. Table 7 shows the evaluation results.

Comparative Example 5 A phenol resin composition was obtained in the same manner as in Example 6, except that the unhydrogenated block copolymer in Reference Example 1 was used. Table 8 shows the evaluation results. Comparative Example 6 A phenol resin composition was obtained in the same manner as in Example 6, except that the carboxy NBR used in Comparative Example 2 was used. Table 8 shows the evaluation results. Comparative Example 7 A phenol resin composition was prepared in the same manner as in Example 6, except that the acrylonitrile-butadiene rubber used in Comparative Example 3 was used. Table 8 shows the evaluation results. As is clear from Table 7, Examples 6 to 10 using the modified hydrogenated diene-based copolymer of the present invention have excellent impact resistance and heat resistance. On the other hand, Comparative Examples 5 to 7 are low in impact resistance and heat resistance and are not sufficient.

[0072]

[Table 7]

[0073]

[Table 8]

* 1) 150 ° C. × 70 hours Examples 11 to 15 and Comparative Examples 8 to 11 (Production of a composition of a modified hydrogenated diene copolymer and a polar resin) Modified water shown in Tables 9 to 10 The added diene copolymer and the polar resin were melt-mixed with a twin-screw extruder, pelletized, sufficiently dried, and then a test piece for evaluation was prepared with an injection molding machine. Tables 9 to 10 show the results of the physical property measurement. Examples 11 to 15 are excellent in both impact resistance and molded appearance. On the other hand, Comparative Examples 8, 9, and 11 are inferior in both impact resistance and molded appearance, and Comparative Example 10 is inferior in impact resistance.

[0075]

[Table 9]

* 1) Nylon 6,6, Amilan CM3006 manufactured by Toray Industries, Inc. * 2) Polybutylene terephthalate, Duranex XD499 manufactured by Polyplastics Co., Ltd.

[0077]

[Table 10]

* 3) Polyacetal, Duracon M90, manufactured by Polyplastics Co., Ltd. * 4) Polycarbonate, Iupilon S-100, manufactured by Mitsubishi Gas Chemical Co., Ltd.

[0079]

The (modified) hydrogenated diene-based copolymer used in the present invention hardly develops a pellet blocking phenomenon, is easy to use as a simple substance, and can be mixed with a polar resin to obtain a polar resin. As a resin impact modifier, an excellent composition of the present invention having advantages such as workability, surface appearance, and electrical insulation can be obtained. Therefore, the (modified) hydrogenated diene-based copolymer composition of the present invention makes use of properties such as processability, surface appearance, and electrical insulation, thereby making it possible to use automobile components such as automobile bumpers and instrument panels, electric and electronic components, and the like. It can be widely used for molding materials, casting materials, coating materials, adhesives, paints, etc. mainly for housings.

 ──────────────────────────────────────────────────続 き Continued on front page (72) Inventor Toshio Teramoto 2--11-24 Tsukiji, Chuo-ku, Tokyo Inside Nippon Gosei Rubber Co., Ltd. Nippon Synthetic Rubber Co., Ltd.

Claims (1)

[Claims] 1. (I) (A)-(B) comprising a vinyl aromatic compound polymer block (A) and a conjugated diene polymer or a random copolymer block (B) of a vinyl aromatic compound and a conjugated diene. A) a block copolymer or, if necessary, a taper block (C) in which the vinyl aromatic compound among the vinyl aromatic compound and the conjugated diene gradually increases.
(A)-(B)-(C) block copolymer comprising:
Or (A)-(B)-(A) block copolymer comprising a vinyl aromatic polymer block (A), wherein the ratio of vinyl aromatic compound / conjugated diene is 5 by weight.
６０60 / 95〜40, the bond content of the vinyl aromatic compound in the component (A) and the component (C) constituted as required is 3 to 3
50% by weight, and the bond content of the vinyl aromatic compound in the component (A) is at least 3% by weight of the total monomers, and the vinyl bond content of the conjugated diene portion in the component (B) is 6%
A hydrogenated diene-based copolymer in which at least 80% of the double bonds of the conjugated diene portion are saturated and the number average molecular weight is from 50,000 to 600,000, And / or the hydrogenated diene copolymer 1
Of the unsaturated compound having at least one functional group selected from the group consisting of an acid anhydride group, a carboxyl group, a hydroxyl group, an amino group and an epoxy group.
1 to 99% by weight of a modified hydrogenated diene copolymer graft-polymerized with 20 parts by weight, and (II) 99 to 1% by weight of a polar resin
(Provided that (I) + (II) = 100% by weight) is a (modified) hydrogenated diene copolymer composition.