CN105385392B - A kind of hot melt adhesive, preparation and application for being bonded steel material and dual anti-PPR materials - Google Patents
A kind of hot melt adhesive, preparation and application for being bonded steel material and dual anti-PPR materials Download PDFInfo
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- CN105385392B CN105385392B CN201511000579.2A CN201511000579A CN105385392B CN 105385392 B CN105385392 B CN 105385392B CN 201511000579 A CN201511000579 A CN 201511000579A CN 105385392 B CN105385392 B CN 105385392B
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- poe
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- 239000004831 Hot glue Substances 0.000 title claims abstract description 69
- 239000000463 material Substances 0.000 title claims abstract description 53
- 230000009977 dual effect Effects 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 18
- 239000010959 steel Substances 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 13
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims abstract description 11
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 7
- 239000003822 epoxy resin Substances 0.000 claims abstract description 5
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 5
- 229920001577 copolymer Polymers 0.000 claims abstract 2
- 239000000203 mixture Substances 0.000 claims description 11
- 239000008187 granular material Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000003999 initiator Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000005453 pelletization Methods 0.000 claims description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 4
- 239000003963 antioxidant agent Substances 0.000 claims description 4
- 230000003078 antioxidant effect Effects 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 239000000178 monomer Substances 0.000 claims description 4
- -1 Siloxanes Chemical class 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 abstract description 20
- 239000000853 adhesive Substances 0.000 abstract description 15
- 239000004743 Polypropylene Substances 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 5
- 239000004594 Masterbatch (MB) Substances 0.000 description 4
- 239000003063 flame retardant Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- OKIRBHVFJGXOIS-UHFFFAOYSA-N 1,2-di(propan-2-yl)benzene Chemical compound CC(C)C1=CC=CC=C1C(C)C OKIRBHVFJGXOIS-UHFFFAOYSA-N 0.000 description 1
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 235000012976 tarts Nutrition 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J151/00—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J151/06—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
-
- 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
- C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
- C08F255/02—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
A kind of hot melt adhesive, preparation and application for being bonded steel material and dual anti-PPR materials, belongs to hot melt adhesive technical field.Raw materials used formula rate：PPR 50-80, POE (ethylene octene copolymer) 10 30, epoxy resin 15, cumyl peroxide (DCP) 0.08 0.25, maleic anhydride 13, oligomeric silsesquioxane (POSS) 0.5 2, Petropols 38, other auxiliary agents 5 10.Hot melt adhesive possesses excellent adhesive property and processing performance, and adhesive strength is big, while the peel strength of institute's adhesives does not significantly decrease in the case of a high temperature, meets the requirement of product, substantially increases temperature range, and that has widened product uses space.
Description
Technical field
The invention belongs to hot melt adhesive technical field, especially a kind of hot melt adhesive for being bonded steel material and dual anti-PPR materials, system
Standby and application.
Background technology
Hot melt adhesive is a kind of adhesive of thermoplasticity, is solid particle under room temperature, its physics in certain temperature range
State changes and changes with temperature, and chemical characteristic is constant.It is solvent-free, pollution-free, nontoxic, tasteless, belong to environmental-protecting chemical product.
Because hot melt adhesive sheet is as solid, easy to pack, transport and store.The production technology of hot melt adhesive is fairly simple, and added value of product is high,
The advantages that bonding strength between the materials is big, adhering speed is fast and enjoy favor.
Due to the environmental protection of hot melt adhesive, safety, cure outstanding advantages of rapid, suitable automated production, past more than ten
Nian Li, hot melt adhesive are always one of fastest-rising adhesive kind.Cut-off 2005, worldwide hot melt adhesive into
For the third-largest kind after polymer emulsion and traditional solvent-based adhesive.In developed regions, hot melt adhesive is all gluing
Quite high ratio, wherein north America region highest are occupied in agent product, close to 20%；And in its ratio of low developed area
Relatively low, its reason is that environmental protection and safety are paid attention to not enough causing solvent-based adhesive product to be still widely used, and
The industrial automation level lower limit development scale in hot melt adhesive market.
The major product of hot melt adhesive has EVA matrix hot melt adhesive, PE matrix hot melt adhesive etc. currently on the market.EVA and PE matrix
Hot melt adhesive is all a kind of solid polymer, is at normal temperatures solid particle, and it is in flowable state to be heated to certain temperature, and is had certain viscous
The molten mass of property, they can meet the bonding requirements of most of materials under general case, and intensity is higher, easy to process, because
And between nonmetallic, between metal or the nonmetallic bonding between metal, it is obtained for and is widely applied.
Common hot melt adhesive species currently on the market is more, also there is part hot melt adhesive special kind, just enumerates here several
The technique and its performance of hot melt adhesive.
PE hot melt adhesives are using PE- maleic anhydrides grafted material as primary raw material, and Petropols etc. are solvent misture, combined polymerization
A kind of adhesive that high-molecular compound makes for modifying agent.In this hot melt adhesive, PE is grafted the cohesion of masterbatch hot melt adhesive
It is most strong；Using cumyl peroxide (DCP) initiator, maleic anhydride is grafted on PE strands；Introduce combined polymerization high score
Sub- compound further improves the grafting rate of PE grafting masterbatch, while improves the performance of hot melt adhesive.
EVA hot-melt adhesive main matrix material is a kind of graft blends of main body.The composition of the hot melt adhesive mainly has：EVA
It is grafted master batch, rosin, PE waxes, PE grafting master batch, filler and antioxidant etc..
Polypropylene thermal melten gel is the adhesive using polypropylene as host matrix.The key component of such a hot melt adhesive has：Poly- third
Alkene, initiator, grafted monomers, PE waxes and antioxidant etc..By initiator and grafted monomers etc. dissolve, then with other components one
Rise to be added in high-speed mixer and be uniformly mixed, hot melt adhesive is made finally by response type double screw extruder extruding pelletization
Grain.
Compared with common hot melt adhesive, the requirement higher to being bonded steel material and the hot melt adhesive special of dual anti-PPR materials,
Not only to consider influence of the material to hot melt adhesive adhesive strength, but also be contemplated that the resistance to elevated temperatures of hot melt adhesive, it is desirable to
Hot melt adhesive still has enough adhesive strengths at a higher temperature, and the material that it is bonded remains one completely
Entirety.
So-called dual anti-PPR materials, just refer to possess excellent fire-retardant, antistatic property PPR materials that (PPR refers to ternary
Atactic copolymerized polypropene).Compared with common high molecular material, substantial amounts of fire retardant and conduction are with the addition of in dual anti-PPR materials
Material, and a certain amount of lubricant in order to ensure the flowing of these materials and add etc..These organic or inorganic materials
A large amount of additions, it is desirable to the hot melt adhesive mutually be bonded with them and common hot melt adhesive have larger difference, could well containing
There are these materials (dual anti-PPR) to be bonded together, make an entirety, reach our intensity requirement.Therefore, this is being designed
During hot melt adhesive special, it is desirable to fully take into account influence of the filler to hot melt adhesive adhesive property.Therefore exploitation bonding steel material with
The hot melt adhesive special of dual anti-PPR materials is imperative.
The content of the invention
The purpose of the present invention is overcome the prior art provide it is a kind of bonding steel material with it is fire-retardant, Anti-static PP R materials
Hot melt adhesive, mainly in the case where keeping common hot melt adhesive basic performance, will also increase the heat resistance of hot melt adhesive, it is desirable to its
Under higher temperature conditionss, which still maintains enough intensity.In addition, it is contemplated that filler in dual anti-PPR
To the considerable influence of hot melt adhesive adhesive property.
The raw materials used optimization formula ratio of present invention bonding steel material and dual anti-PPR materials hot melt adhesive special (with
Lower data are mass fraction) it is as follows：
Other auxiliary agents are selected from such as antioxidant, peculiar smell remover one or more.
The present invention is a kind of to be bonded steel material and the preparation method of fire-retardant, Anti-static PP R materials hot melt adhesive, its feature exists
In comprising the following steps：
(1) dehumidifying and drying of raw material
When producing hot melt adhesive special of the present invention, it is necessary to assure the drying of raw material；To PPR, POE, (ethylene-octene is copolymerized
Thing), epoxy resin, Petropols, dehumidified using vacuum, temperature is at 70-80 DEG C, and the time is when 3-4 is small；And peroxidating diisopropyl
Benzene (DCP), maleic anhydride, oligomeric silsesquioxane (POSS), other auxiliary agents are deposited in dehumidifying ware, keep it dry with drier
It is dry；
(2) PPR/P0E-g-MAH grafted particles are produced
1) dissolving is with mixing
By the cumyl peroxide weighed (DCP) and maleic anhydride dissolving in acetone, then by prepared mixing
Solution and PPR are mixed with POE raw materials, are uniformly mixed with mixer stand-by；
2) grafted particles are produced
The mixture that step 1) is stirred is added to extruding pelletization in response type double screw extruder；By adopting
With graft-blending reaction process, with cumyl peroxide (DCP) for initiator, using maleic anhydride as grafted monomers, each material
The sufficient graft reaction under mechanical shearing is carried out in response type double screw extruder, extrusion is produced PPR/P0E-g-MAH and connect
Branch composition granule, and the grafting composition granule must keep drying, with used when next step.
Above-mentioned graft reaction is in 190-250 DEG C of temperature；Time 3-6min.
(3) extruding pelletization of hot melt adhesive
Epoxy resin, oligomeric silsesquioxane, Petropols and other auxiliary agents are added in above-mentioned steps (2) and are produced
PPR/P0E-g-MAH grafting composition granule, stirred evenly in high-speed mixer it is stand-by, raw material pays attention in whipping process prevent
Tide, material stirring at normal temperature are uniform；It is added in double screw extruder, agitated uniform mixed material in 190-250
At a temperature of DEG C, it is granulated by blending extrusion, so as to prepare required hot-melt adhesive granules.
Hot melt adhesive of the present invention can also can be well matched with the heat resistant requirements of dual anti-PPR, glue the hot melt adhesive special
The product connect -- steel material remains its globality with dual anti-PPR materials, reaches performance requirement.
Hot melt adhesive special obtained by the present invention is mainly used in the steel material for having heat resistant requirements and dual anti-PPR materials institute
In the composite material (such as steel wire rope/fiber or cordage skeleton strengthen dual anti-PPR pipe) of production, environment or use condition require me
Hot melt adhesive special must reach higher heat resistant requirements.Common hot melt adhesive has preferable adhesive strength at normal temperatures, but
When the temperature increases, its adhesive strength can be reduced substantially, so as to cause product to be mutually disengaged between layers, substantially reduce production
The performance of product, it is impossible to meet the requirement of involved product.In this case the hot melt adhesive special for requiring us to design
While material adhesive property is met, also to focus on the heat resistance requirement of hot melt adhesive, to ensure that hot melt adhesive special is bonded
Product still possess enough intensity in a certain temperature conditions, ensure the globality of institute's cementitious product.
The hot melt adhesive special of the bonding steel material that the present invention is produced and dual anti-PPR materials possesses excellent adhesive property
And processing performance, adhesive strength is big, while the peel strength of institute's adhesives does not significantly decrease in the case of a high temperature, full
The foot requirement of product, substantially increases temperature range, and that has widened product uses space.The present invention is produced special
Hot melt adhesive, adhesive strength height, good fluidity, free from extraneous odour especially irritation tart flavour, can abundant bonding steel material and double
The hot melt adhesive special particle of anti-PPR materials.The hot melt adhesive special can also match somebody with somebody well with the heat resistant requirements of dual anti-PPR at the same time
Close, the product for being bonded the hot melt adhesive special -- steel material remains its globality, reaches use with dual anti-PPR materials
Performance requirement.
Hot melt adhesive of the present invention is used to be bonded steel material and dual anti-PPR materials, the hot melt adhesive special obtained by the present invention
Performance indicator is as shown in the table.
Embodiment
With reference to embodiment, the present invention will be further described, but the present invention is not limited to following embodiments.
Embodiment 1
Raw materials are as follows：
The obtained hot melt adhesive of different proportionings, still there is certain difference in performance, and it is real to list several applications here
Example (proportioning is mass fraction) is such as following table.
Note：Certain temperature refers to 190-250 DEG C；Regular hour refers to 3-6min；Mechanical shear stress refers to screw rod
Shearing force, is realized by screw combinations.
Claims (2)
1. one kind bonding steel material and dual anti-PPR materials hot melt adhesive special, it is characterised in that raw materials used formula rate is such as
Under, data below is mass fraction：
One or more of other auxiliary agents in antioxidant, peculiar smell remover；
Preparation method, comprises the following steps：
(1) dehumidifying and drying of raw material
In production, raw material is dried；To PPR, POE (ethylene-octene copolymer), epoxy resin, Petropols, use
Vacuum dehumidifies, and temperature is at 70-80 DEG C, and the time is when 3-4 is small；And cumyl peroxide (DCP), maleic anhydride, oligomeric sesquialter
Siloxanes (POSS), other auxiliary agents are deposited in dehumidifying ware, its drying is kept with drier；
(2) PPR/POE-g-MAH grafted particles are produced
1) dissolving is with mixing
By the cumyl peroxide weighed (DCP) and maleic anhydride dissolving in acetone, then by prepared mixed solution
Mix, be uniformly mixed with mixer stand-by with PPR and POE raw materials；
2) grafted particles are produced
The mixture that step 1) is stirred is added to extruding pelletization in response type double screw extruder；By using connecing
Branch blending reaction technique, with cumyl peroxide (DCP) for initiator, using maleic anhydride as grafted monomers, each material passes through
Response type double screw extruder, under the conditions of 190-250 DEG C, time 3-6min, is sufficiently grafted by mechanical shear stress
Reaction, extrusion produces PPR/POE-g-MAH grafting composition granules, and the grafting composition granule must keep drying, with when next step
It is used；
(3) extruding pelletization of hot melt adhesive
Epoxy resin, oligomeric silsesquioxane, Petropols and other auxiliary agents are added to what is produced in above-mentioned steps (2)
PPR/POE-g-MAH is grafted composition granule, is stirred evenly in high-speed mixer stand-by, and raw material guards against damp in whipping process,
Material stirring at normal temperature is uniform；It is added in double screw extruder, agitated uniform mixed material at 190-250 DEG C
At a temperature of, it is granulated by blending extrusion, so as to prepare required hot-melt adhesive granules.
2. the hot melt adhesive described in claim 1 is used to be bonded steel material and dual anti-PPR materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511000579.2A CN105385392B (en) | 2015-12-25 | 2015-12-25 | A kind of hot melt adhesive, preparation and application for being bonded steel material and dual anti-PPR materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511000579.2A CN105385392B (en) | 2015-12-25 | 2015-12-25 | A kind of hot melt adhesive, preparation and application for being bonded steel material and dual anti-PPR materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105385392A CN105385392A (en) | 2016-03-09 |
| CN105385392B true CN105385392B (en) | 2018-04-17 |
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| CN201511000579.2A Active CN105385392B (en) | 2015-12-25 | 2015-12-25 | A kind of hot melt adhesive, preparation and application for being bonded steel material and dual anti-PPR materials |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106881891A (en) * | 2017-04-07 | 2017-06-23 | 北京红原复合管道技术研究所有限公司 | The production moulding process of the dual anti-PP multiple tubes of steel wire under coal mine net/fiber mesh skeleton |
| CN108084379B (en) * | 2017-12-21 | 2021-01-15 | 西安交通大学 | Preparation method of POSS (polyhedral oligomeric silsesquioxane) based multi-arm block copolymer for cultural relic bonding protection |
| CN108361450B (en) * | 2018-01-30 | 2020-02-11 | 廊坊德润科技有限公司 | Mineral slurry conveying high-wear-resistance and corrosion-resistance composite pipe for wet desulphurization and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237139C (en) * | 2003-04-09 | 2006-01-18 | 广州市鹿山化工材料有限公司 | Hot-melt adhesive for polypropylene and metal |
| CN101245228A (en) * | 2008-02-29 | 2008-08-20 | 广州市合诚化学有限公司 | Hot melt adhesive special for random copolymerization polypropylene multiunit tube and manufacture method thereof |
| CN102432763A (en) * | 2011-10-12 | 2012-05-02 | 上海海隆赛能新材料有限公司 | Preparation method of adhesive for corrosion prevention of steel pipeline |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7067585B2 (en) * | 2002-10-28 | 2006-06-27 | Bostik, Inc. | Hot melt adhesive composition based on a random copolymer of isotactic polypropylene |
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- 2015-12-25 CN CN201511000579.2A patent/CN105385392B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237139C (en) * | 2003-04-09 | 2006-01-18 | 广州市鹿山化工材料有限公司 | Hot-melt adhesive for polypropylene and metal |
| CN101245228A (en) * | 2008-02-29 | 2008-08-20 | 广州市合诚化学有限公司 | Hot melt adhesive special for random copolymerization polypropylene multiunit tube and manufacture method thereof |
| CN102432763A (en) * | 2011-10-12 | 2012-05-02 | 上海海隆赛能新材料有限公司 | Preparation method of adhesive for corrosion prevention of steel pipeline |
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