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EP0564267A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Elastomer composition for light-resistant covering materials and light-resistant covering materials for industrial parts comprising the same

Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1993-03-31
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Granted: —
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Expires: 2013-03-31
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Abstract

Abstract An elastomer composition for light-resistant covering materials, and covering materials for industrial parts which comprise the composition, are obtainable by partially cross-linking a mixture comprising (A) 100 parts by weight in total of at least one terpolymer rubber having a 100°C Mooney viscosity (ML₁₊₄ 100°C) of 30 to 350 selected from ethylene-propylene-dicyclopentadiene terpolymer rubbers and ethylene-butene-1-dicyclopentadiene terpolymer rubbers, (B) 5 to 150 parts by weight of an olefinic polymer and (C) 0 to 150 parts by weight of a mineral oil or a mixture comprising 40 to 95% by weight of an oil-extended ethylene terpolymer rubber and 5 to 60% by weight of an olefinic polymer, the oil-extended ethylene terpolymer rubber comprising a terpolymer rubber component comprising at least one ethylene terpolymer rubber having a 100°C Mooney viscosity (ML₁₊₄ 100°C) of 30 to 350 ethylene propylene-dicyclopentadiene terpolymer rubbers and ethylene-butene-1-dicyclopentadiene terpolymer rubbers and 150 parts by weight or less of a mineral oil per 100 parts by weight of the terpolymer rubber component.

Inventors

  • 👤 Tadashi Hikasa
  • 👤 Satoru Hosoda
  • 👤 Tatsuo Hamanaka
  • 👤 Hiroaki Mendori

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-30 07:25
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/10; C08L9/00; C08L23/16; C08L2201/00; C08L2201/08; C08L23/12; C08L2310/00; C08L2312/00; C08L91/00

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 70 words
An elastomer composition for light-resistant covering materials obtainable by partially cross-linking a mixture comprising (A) 100 parts by weight in total of at least one terpolymer rubber having a 100°C Mooney viscosity (ML₁₊₄ 100°C) of 30 to 350 selected from ethylene-propylene-dicyclopentadiene terpolymer rubbers and ethylene-butene-1-dicyclopentadiene terpolymer rubbers, (B) 5 to 150 parts by weight of an olefinic polymer and (C) 0 to 150 parts by weight of a mineral oil.
Claim 2
Dependent Claim 94 words
An elastomer composition for light-resistant covering materials obtainable by partially cross-linking a mixture comprising 40 to 95% by weight of an oil-extended ethylene terpolymer rubber and 5 to 60% by weight of an olefinic polymer, the oil-extended ethylene terpolymer rubber comprising a terpolymer rubber component comprising at least one ethylene terpolymer rubber having a 100°C Mooney viscosity (M₁₊₄ 100°C) of 30 to 350 selected from ethylene propylene-dicyclopentadiene terpolymer rubbers and ethylene-butene-1-dicyclopentadiene terpolymer rubbers and 150 parts by weight or less of a mineral oil per 100 parts by weight of the terpolymer rubber component.
Claim 3
Dependent Claim 23 words
A composition according to claim 2, wherein the oil-extended ethylene terpolymer rubber has a 100°C Mooney viscosity (ML₁₊₄ 100°C) of 30 to 350.
Claim 4
Dependent Claim 39 words
A composition according to any one of claims 1 to 3 comprising an ethylene-propylene-dicyclopentadiene terpolymer having a propylene-unit content of 10 to 55% by weight, a dicyclopentadiene-unit content of 1 to 30% by weight and the balance being ethylene-units.
Claim 5
Dependent Claim 22 words
A composition according to any one of claims 1 to 4 wherein the olefinic polymer (B) is polypropylene or a propylene-a-olefin copolymer.
Claim 6
Dependent Claim 161 words
A process for producing a composition according to any one of claims 1 to 5 comprising partially cross linking a mixture comprising (A) 100 parts by weight in total of at least one terpolymer rubber having a 100°C Mooney viscosity (ML₁₊₄ 100°C) of 30 to 350 selected from ethylene-propylene-dicyclopentadiene terpolymer rubbers and ethylene-butene-1-dicyclopentadiene terpolymer rubbers, (B) 5 to 150 parts by weight of an olefinic polymer and (C) 0 to 150 parts by weight of a mineral oil or partially cross-linking a mixture comprising 40 to 95% by weight of an oil-extended ethylene terpolymer rubber and 5 to 60% by weight of an olefinic polymer, the oil-extended ethylene terpolymer rubber comprising a terpolymer rubber component comprising at least one ethylene terpolymer rubber having a 100°C Mooney viscosity (ML₁₊₄ 100°C) of 30 to 350 ethylene-propylene-dicyclopentadiene terpolymer rubbers and ethylene-butene-1-dicyclopentadiene terpolymer rubbers and 150 parts by weight or less of a mineral oil per 100 parts by weight of the terpolymer rubber component.
Claim 7
Dependent Claim 28 words
A light resistant covering material for industrial parts which comprises an elastomer composition according to any one of claims 1 to 5 or produced according to claim 6.
Claim 8
Dependent Claim 15 words
A light-resistant covering material according to claim 7 wherein the industrial parts are automobile parts.
Claim 9
Dependent Claim 18 words
A light-resistant covering material according to claim 8 wherein the automobile parts are instruments panels or door trims.
Claim 10
Dependent Claim 27 words
A shaped article having a light-resistant covering comprising a composition according to any one of claims 1 to 5 or a composition produced according to claim 6.

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