EP0269274A2
Expired / Lapsed
EP
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Process for the preparation of thermoplastic elastomer compositions
Assignee: Mitsui Chemicals Inc
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Filing: 1987-10-29
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Granted: —
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Expires: 2007-10-29
Abstract
Abstract A partially crosslinked thermoplastic elastomer composition having an excellent heat-bondability is obtained by dynamically heat-treating a peroxide-crosslinking olefin copolymer rubber with an α,β-unsaturated carboxylic acid or a derivative thereof in the presence of an organic peroxide.
Inventors
- 👤 Yasuhiko Otawa
- 👤 Akira Uchiyama
- 👤 Kunihide Hiraoka
- 👤 Katsuo Okamoto
- 👤 Shizuo Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 15:25
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/26; C08L23/30; C08K; C08K5/00; C08K5/04; C08K5/14; C08F; C08F255/00; C08F255/02; C08F255/04; C08K5/09; C08L23/02; C08L23/16; C08L23/10; C08L2312/00; C08L2666/00; C08L2666/02; C08L2666/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
73 words
A thermoplastic elastomer composition comprising a blend comprising (a) 10 to 100 parts by weight of a peroxide-crosslinking olefin copolymer rubber, (b) 0 to 90 parts by weight of an olefinic plastic, the sum of the amounts of the components (a) and (b) being 100 parts by weight, and (c)n 0.01 to 10 parts by weight of an unsaturated epoxy monomer or an unsaturated hydroxy monomer, said thermoplastic elastomer composition being partially crosslinked.
Claim 2
Dependent Claim
73 words
A thermoplastic elastomer composition comprising a blend comprising (a) 10 to 100 parts by weight of a peroxide-crosslinking olefin copolymer rubber, (b) 0 to 90 parts by weight of an olefinic plastic, the sum of the amounts of the components (a) and (b) being 100 parts by weight, and (c)n 0.01 to 10 parts by weight of an unsaturated epoxy monomer or an unsaturated hydroxy monomer, said thermoplastic elastomer composition being partially crosslinked.
Claim 3
Dependent Claim
64 words
A composition according to claim 1, further comprising at least one additive selected from (d) 0 to 100 parts by weight of a peroxide-non-crosslinking rubbery substance, (e) 0 to 200 parts by weight of a mineral oil softener and (f) 0 to 100 parts by weight of a fibrous filler, per 100 parts by weight of the sum of the components (a) and (b).
Claim 4
Dependent Claim
32 words
A composition according to claim 1 or claim 2 wherein the peroxide-crosslinking olefin copolymer (a) is a copolymer of ethylene and propylene, ethylene and butadiene or ethylene, propylene and a non-conjugated diene.
Claim 5
Dependent Claim
41 words
A composition according to any one of claims 1 to 3 wherein the peroxide crosslinking olefin copolymer (a) is a copolymer of ethylene and propylene in which the molar ratio of ethylene units to propylene units is from 50:50 to 90:10.
Claim 6
Dependent Claim
31 words
A composition according to any one claims 1 to 4 wherein the crosslinking olefin copolymer (a) is a copolymer of ethylene, propylene and 5-ethylidene-2-norbornene or of ethylene, propylene, 5-ethylidene-2-norbornene and dicyclopentadiene.
Claim 7
Dependent Claim
36 words
A composition according to any one of claims 1 to 5 wherein the olefinic plastic (b) is selected from isotactic and syndiotactic homopolymers and copolymers resins of ethylene, 1-butene, 1-pentene, 1-hexene, 2-methyl-1-propene, 3-methyl-1-pentene, 4-methyl-1-pentene and 5-methyl-1-hexene.
Claim 8
Dependent Claim
67 words
A composition according to any one of the cliams 1 to 6 wherein the unsaturated carboxylic acid or derivative thereof is selected from acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, citraconic acid, tetrahydrophthalic acid, bicyclo[2,2,1]hept-2-ene-5,6-dicarboxylic acid, maleic anhydride, itaconic anhydride, citraconic anhydride, tetrahydrophthalic anhydride, bicyclo[2,2,1]hept-2-ene-5,6-dicarboxylic anhydride, methyl acrylate, methyl methacrylate, dimethyl maleate, monomethyl maleate, diethyl fumarate, diemthyl itaconate, diethylcitraconate, dimethyl tetrahydrophthalate dimethyl and bicyclo[2,2,1]hept-2-ene-5,6-dicarboxylate.
Claim 9
Dependent Claim
67 words
A composition according to any one of the cliams 1 to 6 wherein the unsaturated carboxylic acid or derivative thereof is selected from acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, citraconic acid, tetrahydrophthalic acid, bicyclo[2,2,1]hept-2-ene-5,6-dicarboxylic acid, maleic anhydride, itaconic anhydride, citraconic anhydride, tetrahydrophthalic anhydride, bicyclo[2,2,1]hept-2-ene-5,6-dicarboxylic anhydride, methyl acrylate, methyl methacrylate, dimethyl maleate, monomethyl maleate, diethyl fumarate, diemthyl itaconate, diethylcitraconate, dimethyl tetrahydrophthalate dimethyl and bicyclo[2,2,1]hept-2-ene-5,6-dicarboxylate.
Claim 10
Dependent Claim
16 words
A composition according to any one of claims 1 to 7 further comprising a polyolefin plastic.
Claim 11
Dependent Claim
23 words
A composition according to claim 8 wherein the weight ratio of polyolefin plastic to the thermoplastic elastomer composition is from 0/100 to 75/25.
Claim 12
Dependent Claim
55 words
A process for producing a composition according to any one of claims 1 to 9 comprising the steps of blending the peroxide-crosslinking olefin copolymer (a), the olefinic plastic (b) and the unsaturated carboxylic acid or a derivative thereof (c) and dynamically heat-treating the blend in the presence of an organic peroxide to effect partial cross-linking.
Claim 13
Dependent Claim
38 words
A process for producing a composition according to any one of claims 2 to 9 comprising the steps of claim 10 and wherein the fibrous filler (f) is incorporated into the blend before, during or after partial cross-linking.
References Cited (Backward Citations)
No citation records indexed.
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