WO2016142249A1 - Polybutadienole zur herstellung von glasartigen polyurethanen - Google Patents
Polybutadienole zur herstellung von glasartigen polyurethanen Download PDFInfo
- Publication number
- WO2016142249A1 WO2016142249A1 PCT/EP2016/054486 EP2016054486W WO2016142249A1 WO 2016142249 A1 WO2016142249 A1 WO 2016142249A1 EP 2016054486 W EP2016054486 W EP 2016054486W WO 2016142249 A1 WO2016142249 A1 WO 2016142249A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polybutadienols
- double bonds
- polyurethanes
- optionally
- acid
- Prior art date
Links
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- 229920002635 polyurethane Polymers 0.000 title claims abstract description 40
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- 238000000034 method Methods 0.000 claims abstract description 11
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 5
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- 238000002360 preparation method Methods 0.000 claims description 25
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- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 3
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6204—Polymers of olefins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F136/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F136/02—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F136/04—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
- C08F136/06—Butadiene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/04—Oxidation
- C08C19/06—Epoxidation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/30—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule
- C08C19/34—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with oxygen or oxygen-containing groups
- C08C19/40—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with oxygen or oxygen-containing groups with epoxy radicals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F236/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F236/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F236/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
- C08F236/06—Butadiene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/08—Epoxidation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/12—Hydrolysis
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/22—Catalysts containing metal compounds
- C08G18/222—Catalysts containing metal compounds metal compounds not provided for in groups C08G18/225 - C08G18/26
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/69—Polymers of conjugated dienes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
Definitions
- the invention relates to a process for the preparation of polybutadienols, the polybutadienols themselves, their use for the preparation of room temperature glassy polyurethanes having a glass transition temperature of at least 15 ° C and the glassy polyurethanes prepared with the polybutadienols as the polyol component.
- Epoxidized polybutadienes are preferably used for their preparation. Curing takes place either by adding amines (see US 2,876,214 or DE 2833786) or carboxylic acid derivatives (see US 3,371,070 or US 3,436,377), optionally in the presence of alcohols. For curing usually temperatures above 100 ° C are necessary, and the processing times are 1 to 2 hours. In order to obtain vitreous resins, high degrees of epoxidation of polybutadiene are necessary. At high epoxide contents, however, unintended side reactions may already occur during the epoxidation.
- Polybutadienes are nonpolar hydrocarbons and therefore extremely hydrophobic.
- the use of polybutadiene provides water-repellent low swelling materials in water.
- polybutadienes must have hydrogen atoms reactive toward isocyanate groups, e.g. Hydroxyl groups.
- Polyurethanes of polybutadienols have the advantage that the materials produced therefrom are not susceptible to hydrolysis. Although the castor oil used as polyol is hydrophobic, the ester bond of the triglyceride is sensitive to hydrolysis.
- Polybutadienols can be reacted with isocyanates to obtain crosslinked structures.
- liquid hydroxyl-terminated polybutadienes HTPB
- Commercial products are obtained by radical polymerization (see US 3,965,140) or ionic polymerization (see DD 160223) of 1,3-butadiene.
- HTPB liquid hydroxyl-terminated polybutadienes
- certain startup and termination reagents are required.
- polyols with different numbers of functional groups are obtained.
- polybutadienols are hardly suitable for the preparation of vitreous materials because they have significant proportions of flexible 1,4-double bonds leading to cross-linked materials with glass transition temperatures below 25 ° C (see review and cited literature in J. Macromol A 2013, 50, 128-138).
- Polybutadienols can be prepared from non-functionalized polybutadiene oligomers.
- One possibility for the preparation are polymer-analogous reactions by partial epoxidation of existing double bonds and subsequent opening of the epoxides by suitable nucleophiles, in particular alcohols or amines.
- the number of functional groups can be set as desired via the conversion of the polymer-analogous reaction steps.
- the epoxidation of polydienes with percarboxylic acids is summarized, for example, in Perera, Ind. Eng. Chem. Res. 1988, 27, 2196-2203. By reacting polybutadienes with percarboxylic acids epoxidized polybutadienes can be obtained.
- the percarboxylic acid can be used directly or generated in situ from the carboxylic acid and hydrogen peroxide, as described in US Pat. No. 2,829,135.
- the simplest carboxylic acid is often used for epoxidation formic acid. With performic acid formed in situ, virtually exclusively 1,4-double bonds are epoxidized in the polybutadiene.
- the polybutadienols obtained by polymer-analogous reactions contain, depending on the degree of epoxidation and epoxide opening, different amounts of reactive hydroxyl groups. The number of hydroxyl groups also determines the viscosity of the polyol.
- a preparatively simple crosslinking of the polybutadienols can be effected at moderate temperatures of below 80 ° C. by reaction with isocyanates.
- the material properties of the resulting polyurethane, in particular its glass transition temperature and mechanical properties, are controlled by the number of reactive hydroxyl groups per unit mass of the polybutadienol.
- the object of the invention is to provide polyurethanes which have glassy properties at room temperature and polybutadienols which are suitable for producing the glassy polyurethanes.
- the object of the invention is, in particular, to provide hydroxyl-functionalized short-chain polybutadiene oligomers for the preparation of glassy polyurethanes with very low swelling values in water and long processing times (open times) for applications, for example, as a coating material, reactive adhesive or as a foam.
- a further object of the invention is to provide polybutadienols which already give glassy materials at hydroxyl equivalent masses of 750 g or below.
- the blends of polyol and isocyanate are said to allow long processing times and to provide polyurethanes with hydrophobic properties.
- the object is achieved by a process for the preparation of polybutadienols from polybutadienes having a number average molecular weight of 300 to 2,000 g / mol containing 20 to 50% 1, 4 double bonds and 50 to 80% 1, 2-vinylic and 1, 2 cyclovinyl double bonds, based on the amount of all double bonds, comprising the steps
- Epoxidized polybutadienes can be converted into hydroxyl-functionalized polybutadienes by suitable nucleophiles, for example water, as described in DE 10 2012 017055, alcohols, as described in DE 35 1 1 513, or amines, as described in DE 25 54 093.
- suitable nucleophiles for example water, as described in DE 10 2012 017055, alcohols, as described in DE 35 1 1 513, or amines, as described in DE 25 54 093.
- amines are unsuitable for the epoxide ring opening of the polybutadiene epoxides (step (ii)) due to their catalytic effect in the subsequent reaction of the polybutadienols with isocyanates.
- the post-functionalized polybutadiene polyols do not have the hydroxyl groups selectively attached to the end groups but are randomly distributed over the backbone of the polybutadiene.
- the opening of the disubstituted epoxide groups resulting from the epoxidation of 1,4-double bonds is chemically demanding and requires comparatively drastic conditions, such as temperatures above 150 ° C. and / or high pressures, or very acidic or very basic catalysts.
- Suitable catalysts for this reaction are strong acids such as mineral acids as described in EP 0 585 265, boron trifluoride as described in US 5,242,989, trifluoroacetic acid as described in DE 25 54 093 or trifluoromethanesulfonic acid as described in WO 96/20234 and Li, J. Macromol. See, Part A, 2013, 50, 297-301, as well as bases such as potassium hydroxide, as described in DE 35 1 1 513.
- the preparation of the polybutadiene polyol thus consists of two reaction steps, namely (i) epoxidation and (ii) ring opening of the epoxide ring with an alcohol.
- unmodified polybutadienes having a number-average molecular weight of from 300 to 2000 g / mol, preferably from 500 to 1500 g / mol, are used.
- the microstructure of the polybutadiene oligomers has 1, 4-double bonds, 1, 2-vinylic and 1, 2-cyclovinylic double bonds.
- the polybutadienes used according to the invention contain 20 to 50%, preferably 25 to 40% 1, 4 double bonds. Accordingly, the polybutadienes have 50 to 80%, preferably 60 to 75% 1, 2-vinylic and 1, 2-cyclovinyl double bonds.
- the polybutadiene oligomers are e.g. epoxidized with formic acid and hydrogen peroxide.
- the 1, 4 double bonds of the oligomer are partially or completely converted to the epoxide.
- the degree of epoxidation is chosen so that the required number of hydroxyl groups can be generated.
- monoalcohols or polyols are used as nucleophiles.
- Alcohols containing only one hydroxyl group per molecule are preferred (monoalcohols).
- the alcohols may be primary or secondary alcohols, preferably primary alcohols. Preference is given to primary monoalcohols, such as ethanol, 1-propanol and 1-butanol. Alcohols in which the epoxidized polybutadiene is soluble are preferred, and 1-propanol is particularly preferred.
- the reaction may also be carried out in a suitable solvent in which the epoxidized polybutadienol, the alcohol or water and the catalyst are soluble.
- the opening of the epoxide ring takes place in the presence of trifluoromethanesulfonic acid as catalyst.
- catalysts are strong acids, such as sulfuric acid, methanesulfonic acid or Lewis acids, such as tin (II) chloride.
- the polybutadienols obtained by polymer-analogous reactions contain different amounts of reactive hydroxyl groups, depending on the epoxidation and epoxide opening conversions.
- the hydroxyl equivalent mass of the polybutadienols obtained is generally from 250 to 750 g, preferably from 300 to 600 g.
- the opening of disubstituted epoxide groups with alcohols provides polybutadiene polyols with only secondary OH groups.
- the content of secondary OH groups, based on all OH groups, in the polybutadienols prepared according to the invention is at least 70%, preferably at least 90%, particularly preferably at least 95%.
- secondary hydroxyl groups are advantageous since the reaction with isocyanates is generally slower than with primary hydroxyl groups.
- the glassy polyurethanes according to the invention can be obtained from polybutadienols having hydroxyl equivalent masses of generally 250 to 750 g, which have a high proportion of repeat units having 1, 2-vinylic and 1, 2-cyclovinylic double bonds. hold.
- the protruding in the microstructure of the polymer chain, 1, 2-vinylic and 1, 2-cyclovinyl double bonds containing molecules complicate the movement of molecules and increase the glass transition temperature of the polybutadienols, and the crosslinked polyurethanes prepared therefrom.
- the present invention also relates to polyurethanes having a glass transition temperature of at least 20 ° C, obtainable by reacting a) polyisocyanates A with
- the glass transition temperature of the polyurethanes is preferably at least 15 ° C., more preferably at least 25 ° C.
- the polyurethanes of the invention may be unfoamed, solid materials having a density of generally greater than 1000 kg / m 3 or foams.
- the blowing agent used to produce foams is preferably water (component E) which reacts with isocyanate groups with elimination of carbon dioxide.
- so-called physical blowing agents can also be used. These are compounds which are inert to the starting components and which are usually liquid at room temperature and evaporate under the conditions of the urethane reaction.
- the boiling point of the physical blowing agent is below 100 ° C.
- the organic polyisocyanates A and the components containing compounds with isocyanate-reactive hydrogen atoms are reacted in amounts such that the equivalent ratio of NCO groups to the sum of the reactive hydrogen atoms is 0.5: 1 to 4: 1 (corresponding to an isocyanate index of 50 to 350), preferably 0.8: 1 to 2: 1 and more preferably from 0.9: 1 to 1, 5: 1.
- the organic and / or modified polyisocyanates A used for the preparation of the polyurethanes according to the invention include the aliphatic, cycloaliphatic and aromatic di- or polyfunctional isocyanates known from the prior art and any desired mixtures thereof.
- Examples are 4,4'-methanediphenyl diisocyanate, 2,4'-methanediphenyl diisocyanate, the mixtures of monomeric Methandiphenyldiisocyanaten and legallykernigen Homologues of methanediphenyl diisocyanate (polymer MDI), tetramethylene diisocyanate, hexamethylene diisocyanate (HDI), the mixtures of hexamethylene diisocyanates and higher nuclear homologs of hexamethylene diisocyanate (multinuclear HDI), isophorone diisocyanate (IPDI), 2,4- or 2,6-toluene diisocyanate (TDI ) or mixtures of said isocyanates.
- polymer MDI polymer MDI
- HDI hexamethylene diisocyanate
- multinuclear HDI hexamethylene diisocyanate
- IPDI isophorone diisocyanate
- TDI tolylene diisocyanate
- MDI diphenylmethane diisocyanate
- CAde MDI polyphenylene polymethylene polyisocyanates
- the isocyanates may also be modified, for example by incorporation of uretdione, carbamate, isocyanurate, carbodiimide, allophanate and in particular urethane groups.
- the isocyanate component A can also be used in the form of isocyanate group-containing isocyanate prepolymers.
- polyisocyanate prepolymers are obtainable by reacting polyisocyanates described above as component A1, for example at temperatures of 30 to 100 ° C., preferably at about 80 ° C., with polyols A2 to give the prepolymer.
- component A1 polyisocyanates described above as component A1
- polyols A2 polyols A2
- 4,4'-MDI is preferably reacted with uretonimine-modified MDI and commercial polyols based on polyesters, for example starting from adipic acid or polyethers, for example starting from ethylene oxide and / or propylene oxide.
- Polyols A2 are known to the person skilled in the art and are described, for example, in "Kunststoffhandbuch, Volume 7, Polyurethanes", Carl Hanser Verlag, 3rd edition 1993, Chapter 3.1. Polyethers are preferably used as polyols A2. If appropriate, conventional chain extenders or crosslinking agents are added to the abovementioned polyols A2 in the preparation of the isocyanate prepolymers as component A3. Such chain extenders are the substances described below under B2.
- chain extenders 1, 4-butanediol, 1, 2-propylene glycol, 1, 3-butanediol, dipropylene glycol, tripropylene glycol and / or propylene glycols having a molecular weight of up to 500 are particularly preferably used.
- the ratio of organic polyisocyanates A1 to polyols A2 and chain extenders A3 is selected so that the isocyanate prepolymer has an NCO content of 10 to 28%, particularly preferably 14 to 25%.
- the glassy polyurethanes are non-foamed polyurethanes. These are obtainable by reacting the components A, B, optionally C, optionally D and optionally G in the amounts indicated above, being carried out in the absence of blowing agents E and F.
- the glassy polyurethanes are foams. These are obtainable by reacting components A, B, optionally C, optionally D and optionally G, working in the presence of water E as blowing agent and / or a physical blowing agent F.
- Suitable further compounds C having at least two isocyanate-reactive hydrogen atoms have a molecular weight of generally at least 58 g / mol. All compounds known for polyurethane preparation with at least two reactive hydrogen atoms and a molecular weight of at least 58 g / mol can be used. These have, for example, a functionality of 2 to 8 and a molecular weight of 58 to 12,000 g / mol.
- polyether polyamines and / or polyols selected from the group of chain extenders, polyether polyols, polyester polyols or mixtures thereof can be used.
- the further polyols C which are preferably used are chain extenders, polyetherols, polycarbonate polyols and / or polyesterols having molecular weights of 58 to 12,000 g / mol.
- Preferred chain extenders are compounds having a molecular weight of less than 300 g / mol, for example compounds having 2 isocyanate-reactive hydrogen atoms. These can be used individually or in the form of mixtures. Suitable examples include aliphatic, cycloaliphatic and / or araliphatic diols having 2 to 14, preferably 2 to 10 carbon atoms, in particular alkylene glycols. Accordingly, low molecular weight hydroxyl-containing polyalkylene oxides based on ethylene oxide and / or 1,2-propylene oxide are also suitable.
- Preferred chain extenders are (mono-) ethylene glycol, 1,2-propanediol, 1,3-propanediol, pentanediol, tripropylene glycol, 1,10-decanediol, 1,2,4,1,3,4,4-dihydroxycyclohexane, Diethylene glycol, triethylene glycol, dipropylene glycol, 1,4-butanediol, 1,6-hexanediol, 2-methylpropane-1,3-diol, 2,2-dimethylpropane-1,3-diol, bisphenol A bis (hydroxy ether), N Phenyldiethanolamine and bis (2-hydroxyethyl) hydroquinone.
- Particularly preferred chain extenders used are monoethylene glycol, diethylene glycol, 2-methyl-1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol or mixtures thereof, very particular preference being given to 1,4-butanediol or monoethylene glycol.
- the polyetherols, polycarbonate polyols and / or polyesterols preferably have molecular weights of from 150 to 12,000 g / mol and an average functionality of from 2 to 8.
- Preferably used as further polyols C exclusively polyetherols and / or polyester polyols.
- polyetherols and polyester polyols a distinction is made between polyols which are used for rigid foam on the one hand and for elastomers or flexible foam on the other hand.
- Polyols for rigid foam applications have a functionality of 2 to 8 and a molecular weight of 150 to 2000.
- Polyols for elastomeric and flexible foam typical applications have a functionality of 2 to 3 and a molecular weight of 2,000 to 6,000.
- Polyol C is preferably a chain extender or a polyol having a functionality of 2 to 8 and a molecular weight of 150 to 2,000.
- the polyetherols C are prepared by known methods. For example, they may be prepared by anionic polymerization of alkylene oxides of 2 to 4 carbon atoms with alkali hydroxides, e.g. Sodium or potassium hydroxide or alkali alcoholates, e.g. Sodium methylate, sodium or potassium or potassium isopropoxide as catalysts and with the addition of at least one starter molecule having 2 to 8, preferably 2 to 6 reactive hydrogen atoms, or by cationic polymerization with Lewis acids such as antimony pentachloride, borofluoride etherate u. a., or bleaching earth as catalysts.
- alkali hydroxides e.g. Sodium or potassium hydroxide or alkali alcoholates, e.g. Sodium methylate, sodium or potassium or potassium isopropoxide
- starter molecule having 2 to 8, preferably 2 to 6 reactive hydrogen atoms e.g. Sodium methylate, sodium or potassium or potassium isopropoxide
- Lewis acids such
- polyether polyols can be prepared by Doppelmetallcyanidkatalyse from one or more alkylene oxides having 2 to 4 carbon atoms.
- Tertiary amines can also be used as catalyst, for example triethylamine, tributylamine, trimethylamine, dimethylethanolamine, imidazole or dimethylcyclohexylamine.
- monofunctional starters can also be incorporated into the polyether structure.
- Suitable alkylene oxides are, for example, tetrahydrofuran, 1, 3-propylene oxide, 1, 2 or 2,3-butylene oxide, styrene oxide and preferably ethylene oxide and 1, 2-propylene oxide.
- the alkylene oxides can be used individually, alternately in succession or as mixtures.
- Suitable starter molecules are, for example: water, aliphatic and aromatic, optionally N-mono-, N, N- and ⁇ , ⁇ '-dialkyl-substituted diamines having 1 to 4 carbon atoms in the alkyl radical, such as optionally mono- and dialkyl-substituted ethylenediamine, diethylenetriamine , Triethylenetetramine, 1, 3-propylenediamine, 1, 3 or 1, 4-butylenediamine, 1, 2, 1, 3, 1, 4, 1, 5 and 1, 6-hexamethylenediamine, phenylenediamine, 2 , 3-, 2,4- and 2,6-toluenediamine (TDA) and 4,4'-, 2,4'- and 2,2'-diaminodiphenylmethane (MDA) and polymeric MDA.
- TDA 2,4- and 2,6-toluenediamine
- MDA 2,4'- and 2,2'-diaminodiphenylmethane
- alkanolamines such as ethanolamine, N-methyl- and N-ethyl-ethanolamine
- dialkanolamines such as diethanolamine, N-methyl- and N-ethyldiethanolamine
- tri alkanolamines such as triethanolamine, and ammonia.
- polyesterols such as ethanediol, 1,2- and 2,3-propanediol, diethylene glycol, dipropylene glycol, 1,4-butanediol, 1,6-hexanediol, glycerol, trimethylolpropane, pentaerythritol, sorbitol and sucrose, and mixtures from that.
- the polyether polyols may be used singly or in the form of mixtures.
- polyesterols C polyesterols commonly used in polyurethane chemistry can be used. Polyesterols C can be prepared, for example, from organic dicarboxylic acid.
- dicarboxylic acids having 2 to 12 carbon atoms preferably aliphatic dicarboxylic acids having 4 to 6 carbon atoms and polyhydric alcohols, preferably diols, having 2 to 12 carbon atoms, preferably 2 to 6 carbon atoms.
- Suitable dicarboxylic acids are, for example: succinic acid, glutaric acid, adipic acid, suberic acid, azelaic acid, sebacic acid, decanedicarboxylic acid, maleic acid, fumaric acid, phthalic acid, isophthalic acid and terephthalic acid.
- the dicarboxylic acids can be used both individually and in admixture with each other.
- dicarboxylic acid derivatives for example dicarboxylic acid esters of alcohols having 1 to 4 carbon atoms or dicarboxylic acid anhydrides.
- dicarboxylic acid mixtures of succinic, glutaric and adipic acid are used in proportions of, for example, from 20 to 35:35 to 50:20 to 32 parts by weight, and in particular adipic acid.
- dihydric or polyhydric alcohols especially diols
- diols are: ethanediol, diethylene glycol, 1,2- or 1,3-propanediol, dipropylene glycol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1, 10 -Decandiol, glycerol and trimethylolpropane.
- ethanediol diethylene glycol, 1, 4-butanediol, 1, 5-pentanediol and 1, 6-hexanediol.
- polyol B is used as the alcohol component.
- polyester polyols from lactones, for example caprolactone, or hydroxycarboxylic acids, for example hydroxycaproic acid. It is also possible to use polyesterols of caprolactone and / or hydroxycarboxylic acids and polyol B.
- the organic for example aromatic and preferably aliphatic polycarboxylic acids and / or derivatives and polyhydric alcohols catalyst-free or preferably in the presence of esterification catalysts, conveniently in an atmosphere of inert gas, such as nitrogen, carbon monoxide, helium, argon, inter alia in the melt at temperatures of 150 to 250 ° C, preferably 180 to 220 ° C, optionally under reduced pressure, to the desired acid number, which is preferably less than 10, more preferably less than 2, are polycondensed.
- inert gas such as nitrogen, carbon monoxide, helium, argon
- esterification mixture at the abovementioned temperatures up to an acid number of 80 to 30, preferably 40 to 30, under normal pressure and then under a pressure of less than 500 mbar, preferably 50 to 150 mbar, polycondensed.
- Suitable esterification catalysts are, for example, iron, cadmium, cobalt, lead, zinc, antimony, magnesium, titanium and tin catalysts in the form of metals, metal oxides or metal salts.
- the polycondensation can also be carried out in the liquid phase in the presence of diluents and / or entrainers, such as benzene, toluene, xylene or chlorobenzene for the azeotropic distillation of the water of condensation.
- diluents and / or entrainers such as benzene, toluene, xylene or chlorobenzene for the azeotropic distillation of the water of condensation.
- the organic polycarboxylic acids and / or derivatives and polyhydric alcohols are advantageously in a molar ratio of 1: 1 to 2, preferably 1: 1, 05 to 1, 5 polycondensed.
- the polyesterpolyols obtained preferably have a functionality of 2 to 4, in particular of 2 to 3, and a number average molecular weight of 200 to 3000, preferably 300 to 2000 g / mol.
- component C particularly suitable polyols are polyols based on oils and fats
- catalysts D for the preparation of the polyurethanes preference is given to using compounds which greatly accelerate the reaction of the hydroxyl-containing compounds of component B and optionally C with the organic, optionally modified polyisocyanates A.
- amidines such as 2,3-dimethyl-3,4,5,6-tetrahydropyrimidine
- tertiary amines such as triethylamine, tributylamine, dimethylbenzylamine, N-methyl-, N-ethyl-, N-cyclohexylmorpholine, ⁇ , ⁇ , ⁇ ', ⁇ '-tetramethylethylenediamine, ⁇ , ⁇ , ⁇ ', ⁇ '-tetramethylbutanediamine, ⁇ , ⁇ , ⁇ ', ⁇ '-tetramethylhexanediamine, pentamethyldiethylenetriamine, tetramethyldiminoethyl ether, bis (dimethylaminopropyl)
- organic metal compounds preferably organic tin compounds such as stannous salts of organic carboxylic acids, e.g. Tin (II) acetate, stannous octoate, stannous (II) ethylhexanoate, and stannous (II) laurate and the dialkyltin (IV) salts of organic carboxylic acids, e.g.
- organic tin compounds such as stannous salts of organic carboxylic acids, e.g. Tin (II) acetate, stannous octoate, stannous (II) ethylhexanoate, and stannous (II) laurate and the dialkyltin (IV) salts of organic carboxylic acids, e.g.
- the organic metal compounds can be used alone or preferably in combination with strongly basic amines.
- component (b) is an ester, it is preferred to use only amine catalysts.
- Preferably used are 0.001 to 5 wt .-%, in particular 0.05 to 2 wt .-% catalyst or catalyst combination, based on the total weight of components B and optionally C.
- the glassy polyurethanes of the invention having a glass transition temperature of at least 15 ° C may be non-foamed, solid materials having a density of generally greater than 1000 kg / m 3 or foams.
- blowing agent for the production of foams preferably water (component E) is used which reacts with isocyanate groups with elimination of carbon dioxide.
- so-called physical blowing agents can also be used. These are compounds which are inert to the starting components and which are usually liquid at room temperature and evaporate under the conditions of the urethane reaction.
- the boiling point is below 100 ° C.
- the physical blowing agents F are usually selected from the group consisting of alkanes and / or cycloalkanes having at least 4 carbon atoms, dialkyl ethers, esters, alcohols, ketones, acetals, fluoroalkanes having 1 to 8 carbon atoms and tetraalkylsilanes.
- Examples which may be mentioned are: propane, n-butane, iso- and cyclobutane, n-, iso- and cyclopentane, cyclohexane, dimethyl ether, methyl ethyl ether, methyl butyl ether, methyl formate, tetrarbutanol, acetone and fluoroalkanes which can be degraded in the troposphere and are therefore harmless to the ozone layer, such as trifluoromethane, difluoromethane, 1,1,1,3,3-pentafluorobutane, 1,1,1,3,3-pentafluoropropane, 1,1,1,3,3-pentafluoropropene, 1-chloro-3,3,3-trifluoroprene, 1,1,1,2-tetrafluoroethane, difluoroethane and 1,1,1,3,3,3,3-heptafluoropropane and perfluoroalkanes, such as, C
- the amount of water is preferably 0.05 to 3 parts by weight, based on the polyol components B and optionally C. If a physical blowing agent is used, the amount thereof is preferably 0.1 to 30 parts by weight, based on the polyol components B and optionally C.
- the foams are usually made in a mold.
- the density of the foams is generally 100 to 1000 kg / m 3 .
- Such foams are sometimes referred to in the literature as microcellular foams.
- auxiliaries and / or additives E may also be added to the reaction mixture for the preparation of the polyurethane foams.
- auxiliaries and / or additives E include surface-active substances, foam stabilizers, cell regulators, other release agents, fillers, dyes, pigments, hydrolysis protectants, flame retardants, odor-absorbing substances and fungistatic and / or bacteriostatic substances.
- Suitable surface-active substances are, for example, compounds which serve to assist the homogenization of the starting materials and, if appropriate, are also suitable for regulating the cell structure.
- emulsifiers such as the sodium salts of castor oil sulfates or of fatty acids, and salts of fatty acids with amines, for example diethylamine, diethanolamine stearate, ricinoleic diethanolamine, salts of sulfonic acids, for example alkali metal or ammonium salts of dodecylbenzene or dinaphthylmethanedisulfonic acid, and ricinoleic acid ;
- Foam stabilizers such as siloxane-oxalkylene copolymers and other organopolysiloxanes, ethoxylated alkylphenols, ethoxylated fatty alcohols, paraffin oils, castor oil or ricinoleic acid esters, Turkish red oil and peanut oil, and cell regulators, such as paraffins, fatty alcohols, polyoxyalkylene-polysiloxane copolymers and dimethylpolysiloxa
- oligomeric acrylates having polyoxyalkylene and fluoroalkane radicals as side groups are also suitable.
- the surface-active substances are usually used in amounts of from 0.01 to 5 parts by weight, based on 100 parts by weight of component B and, if appropriate, C.
- Suitable fillers are the conventional, conventional organic and inorganic fillers, reinforcing agents, weighting agents, coating compositions which are known per se.
- inorganic fillers such as silicate minerals, for example phyllosilicates, such as antigorite, bentonite, serpentine, hornblende, amphiboles, chrysotile and talc, metal oxides, such as kaolin, aluminas, titanium oxides, zinc oxide and iron oxides, metal salts such as chalk and barite, and inorganic pigments such as cadmium sulfide, zinc sulfide and glass, among others Preference is given to using kaolin (China Clay), aluminum silicate and coprecipitates of barium sulfate and aluminum silicate.
- inorganic fibers for example glass fibers.
- Suitable organic fillers are, for example, carbon black, melamine, rosin, cyclopentadienyl resins and graft polymers, and also cellulose fibers, polyamide, polyacrylic
- the inorganic and organic fillers can be used singly or as mixtures and are advantageously added to the reaction mixture in amounts of from 0.5 to 50% by weight, preferably from 1 to 40% by weight, based on the weight of components A to D. ,
- Lithene® Ultra AL from Synthomer Ltd. is sold. It has a number average molecular weight of 750 g / mol and is based, based on the amount of all double bonds, from about 38 mol .-% 1, 4-cis / trans, about 36 mol .-% 1, 2-vinylic and about 26 mol% of 1,2-cyclovinyl units together.
- the epoxide contents of the modified polybutadienes were determined by a method of Jung and Kleeberg as described in Fres. J. Anal. Chem. 1962, 387.
- the OH numbers of the polyols were determined according to DIN 53240-2 by means of potentiometric titration.
- the dynamic shear viscosities were determined using an AR-G2 rheometer from TA Instruments. Measurements were taken at the indicated temperature in steady state mode at shear rates between 0.1 and 100 Hz with a cone and plate geometry (diameter: 40 mm, angle: 2 °).
- the glass transition temperatures were determined by DSC. Uncrosslinked materials were cooled from room temperature to -100 ° C at a rate of 10 ° C / min. The temperature was held for 4 minutes. Finally, the temperature was increased at a rate of 10 ° C / min to 100 ° C and determines the glass transition temperature in this heating phase at the inflection point of the heat flow curve.
- the crosslinked materials were first heated to 100 ° C within 12 minutes and then cooled to -90 ° C within 22 minutes. In the second heating phase, the temperature was raised to 255 ° C at 20 ° C / min. The glass transition temperature was determined in the second heating phase at the inflection point of the heat flow curve.
- the tensile tests were carried out according to DIN 53504 on S2 shoulder rods with optical tracking. Shore hardnesses were determined according to DIN 53505.
- the determination of the water absorption was carried out on PU plates of approx. 3 x 4 cm 2 cut to size precisely for slide frames. The samples were placed in water at a temperature of 100 ° C for five hours. The samples were finally blotted dry, and from the mass difference, the degree of swelling was calculated.
- Example 1 Preparation of Partially Epoxidized Polybutadiene Oligomers
- 1000 g of Lithene® Ultra AL were dissolved in 5667 g of toluene and heated to 60.degree. After addition of 43.8 g of 98% formic acid was intimately mixed with 300 rpm. Over 7.5 hours, 70, 100 or 130 mL / hour of hydrogen peroxide were added continuously. The reaction mixture was then washed twice with saturated sodium bicarbonate solution and once with saturated sodium chloride solution. The organic phase was dried with sodium sulfate and the solvent removed under reduced pressure at 60 ° C. The properties of the resulting pale yellow, viscous oils are summarized in Table 1.
- Example 2 Preparation of Polybutadiene Polyols 900 g were heated in a 6 L glass reactor for the preparation of polyols 1 and 2 or 450 g for the preparation of polyol 3 of the partially epoxidized Lithene® Ultra AL in 1800 g of 1-propanol at the indicated temperature and solved. After adding an appropriate amount of a 10% solution of trifluoromethanesulfonic acid (TfOH) in 1-propanol, the indicated time was stirred. Then, the mixture was neutralized with sodium hydrogencarbonate and insoluble salt was filtered off after cooling the mixture. Excess 1-propanol was removed from the filtrate under reduced pressure at up to 95 ° C. The properties of the resulting pale yellow, viscous oils are summarized in Table 2. hydroxyl-modified polybutadienols
- the polybutadiene polyols from Table 2 and polymeric MDI (Lupranat® M20 from BASF SE, Ludwigshafen, DE) with an NCO value of 31.5% were heated to 60.degree.
- the polyol component optionally contained a mercury salt as a catalyst.
- the components were mixed in a Speedmixer from Hausschild GmbH for one minute at 2000 rpm.
- 62.74 g of polybutadienol 4 with 0.07 g of catalyst were weighed in a beaker for the A component and blended bubble-free in Speedmixer.
- the A component was stored for at least 30 minutes at 60 ° C (processing temperature) before the isocyanate component B was added.
- B component and A component were mixed.
- the mixture was poured into a tempered aluminum mold at 70 ° C of about 150 x 200 x 2 mm 3 and smoothed with a plastic rod. 20 minutes after setting (open time, processing time at 70 ° C.), the material was molded and annealed for 4 hours at 80 ° C.
- the transparent glossy polyurethane was stored for at least 7 days at 23 ° C and 50% humidity prior to characterization.
- Table 3 summarizes the properties of other polyurethanes made from polybutadienols.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Polyurethanes Or Polyureas (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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EP16707761.9A EP3265495B1 (de) | 2015-03-06 | 2016-03-03 | Polybutadienole zur herstellung von glasartigen polyurethanen |
BR112017017173A BR112017017173A2 (pt) | 2015-03-06 | 2016-03-03 | ?processo para a produção de polibutadienóis, polibutadienol, poliuretano e utilização de polibutadienóis? |
US15/555,097 US20180037693A1 (en) | 2015-03-06 | 2016-03-03 | Polybutadienols for producing glassy polyurethanes |
CN201680013962.8A CN107406545A (zh) | 2015-03-06 | 2016-03-03 | 用于制备玻璃状聚氨酯的聚丁二烯醇 |
JP2017564804A JP2018507315A (ja) | 2015-03-06 | 2016-03-03 | ガラス質ポリウレタンの製造のためのポリブタジエノール |
KR1020177028162A KR20170125938A (ko) | 2015-03-06 | 2016-03-03 | 유리질 폴리우레탄의 제조를 위한 폴리부타디엔올 |
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EP (1) | EP3265495B1 (de) |
JP (1) | JP2018507315A (de) |
KR (1) | KR20170125938A (de) |
CN (1) | CN107406545A (de) |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2021105037A1 (de) | 2019-11-28 | 2021-06-03 | Evonik Operations Gmbh | Polyethermodifizierte polybutadiene und verfahren zu deren herstellung |
CN114057910A (zh) * | 2020-08-03 | 2022-02-18 | 北京诺维新材科技有限公司 | 一种多羟基聚合物的缩醛化物及其制备方法和用途 |
EP4047031A1 (de) | 2021-02-17 | 2022-08-24 | Evonik Operations GmbH | Aminofunktionelle polybutadiene mit kammständigen polyetherresten und verfahren zu deren herstellung |
EP4095165A1 (de) | 2021-05-27 | 2022-11-30 | Evonik Operations GmbH | Polyester-polyethermodifizierte polybutadiene und verfahren zu deren herstellung |
WO2022248267A1 (de) | 2021-05-27 | 2022-12-01 | Evonik Operations Gmbh | Hydrierte polyethermodifizierte aminofunktionelle polybutadiene und verfahren zu deren herstellung |
WO2022248266A1 (de) | 2021-05-27 | 2022-12-01 | Evonik Operations Gmbh | Hydrierte polyethermodifizierte polybutadiene und verfahren zu deren herstellung |
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CN112210322B (zh) * | 2019-07-12 | 2021-09-28 | 北京诺维新材科技有限公司 | 一种玻璃粘结用组合物和含有该组合物的夹层玻璃 |
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US3454530A (en) * | 1966-03-07 | 1969-07-08 | Leslie C Case | Novel polyols which are reaction products of a monoepoxide and a cyclic monoanhydride |
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BR112015019939B1 (pt) * | 2013-03-28 | 2020-08-18 | Dow Global Technologies Llc | Método para preparar um polímero de isocianurato ou de poliuretano-isocianurato |
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2016
- 2016-03-03 KR KR1020177028162A patent/KR20170125938A/ko not_active Withdrawn
- 2016-03-03 BR BR112017017173A patent/BR112017017173A2/pt not_active Application Discontinuation
- 2016-03-03 EP EP16707761.9A patent/EP3265495B1/de active Active
- 2016-03-03 CN CN201680013962.8A patent/CN107406545A/zh active Pending
- 2016-03-03 WO PCT/EP2016/054486 patent/WO2016142249A1/de active Application Filing
- 2016-03-03 JP JP2017564804A patent/JP2018507315A/ja active Pending
- 2016-03-03 US US15/555,097 patent/US20180037693A1/en not_active Abandoned
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DE2554093A1 (de) * | 1974-12-03 | 1976-06-10 | Inst Francais Du Petrol | Polymere substanzen auf basis von hydrierten und epoxydierten polybutadienen, deren herstellung und verwendung als multifunktionelle zusatzstoffe fuer schmieroele |
EP0185193A2 (de) * | 1984-11-19 | 1986-06-25 | Henkel Kommanditgesellschaft auf Aktien | Lufttrocknendes Lackbindemittel auf Basis ungesättigter Polymerer |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021105037A1 (de) | 2019-11-28 | 2021-06-03 | Evonik Operations Gmbh | Polyethermodifizierte polybutadiene und verfahren zu deren herstellung |
US12139561B2 (en) | 2019-11-28 | 2024-11-12 | Evonik Operations Gmbh | Polyether-modified polybutadienes and processes for preparation thereof |
CN114057910A (zh) * | 2020-08-03 | 2022-02-18 | 北京诺维新材科技有限公司 | 一种多羟基聚合物的缩醛化物及其制备方法和用途 |
EP4047031A1 (de) | 2021-02-17 | 2022-08-24 | Evonik Operations GmbH | Aminofunktionelle polybutadiene mit kammständigen polyetherresten und verfahren zu deren herstellung |
WO2022175140A1 (de) | 2021-02-17 | 2022-08-25 | Evonik Operations Gmbh | Aminofunktionelle polybutadiene mit kammständigen polyetherresten und verfahren zu deren herstellung |
EP4095165A1 (de) | 2021-05-27 | 2022-11-30 | Evonik Operations GmbH | Polyester-polyethermodifizierte polybutadiene und verfahren zu deren herstellung |
WO2022248267A1 (de) | 2021-05-27 | 2022-12-01 | Evonik Operations Gmbh | Hydrierte polyethermodifizierte aminofunktionelle polybutadiene und verfahren zu deren herstellung |
WO2022248266A1 (de) | 2021-05-27 | 2022-12-01 | Evonik Operations Gmbh | Hydrierte polyethermodifizierte polybutadiene und verfahren zu deren herstellung |
US12104003B2 (en) | 2021-05-27 | 2024-10-01 | Evonik Operations Gmbh | Polyester-polyether-modified polybutadienes and processes for preparation thereof |
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JP2018507315A (ja) | 2018-03-15 |
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US20180037693A1 (en) | 2018-02-08 |
EP3265495A1 (de) | 2018-01-10 |
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