EP0194030A2
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EP
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Vulcanizable rubber compositions and applications thereof
Assignee: JSR Corp
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Filing: 1986-01-31
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Granted: —
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Expires: 2006-01-31
Abstract
Abstract A vulcanizable rubber composition comprises (1) 100 parts by weight of a polymer composition comprising (I) a vinylidene fluoride resin, (II) at least one acrylic rubber, a,p-unsaturated nitrile-conjugated diene copolymer rubber or hydride of an a,p-unsaturated nitrile-conjugated diene copolymer rubber, (III) another blendable polymer, wherein the weight ratio of (I)/[(II) + (III)] is from 5/95 to 60/ 40 and the weight ratio of (II)/(III) is from 100/0 to 50/50, and (2) from 0 to 40 by weight of a plasticizer. Said rubber composition excels not only in heat resistance, gasoline resistance and sour gasoline resistance but also in gasohol resistance and sour gasohol resistance and further has good tensile strength, elongation and balance between gasoline resistance and low-temperature resistance. Therefore, it can be used in the fluid-contacting surface of a diaphragm or as an inner tube of a fuel hose.
Inventors
- 👤 Yasuhiko Takemura
- 👤 Shinichiro Zen
- 👤 Yoshiaki Zama
- 👤 Hiroji Enyo
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 12:56
CPC Classifications
B; B32; B32B; B32B25/00; B32B25/04; B32B25/042; B32B25/14; B32B1/00; B32B1/08; C; C08; C08L; C08L15/00; C08L15/005; C08L27/00; C08L27/02; C08L27/12; C08L27/16; C08L33/00; C08L33/04; C08L33/06; C08L9/00; C08L9/02; B32B2305/00; B32B2305/72; C08L33/08; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1386
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
9 words
A vulcanizable rubber composition comprising a polymer composition comprising
Claim 2
Dependent Claim
9 words
A vulcanizable rubber composition comprising a polymer composition comprising
Claim 3
Dependent Claim
173 words
(I) a vinylidene fluoride resin; (II) at least one rubber selected from acrylic rubbers, α,β-unsaturated nitrile-conjugated diene copolymer rubbers and hydrides of α,β-unsaturated nitrile-conjugated diene copolymer rubbers, said acrylic rubber consisting of (A) from 30 to 99.9% by weight of an alkyl acrylate and/or an alkoxy-substituted alkyl acrylate, (B) from 0.1 to 10% by weight of a cross-linkable monomer and (C) from 0 to 70% by weight of another ethylenically unsaturated compound copolymerizable with (A) and (B), and said α,8-unsaturated nitrile-conjugated diene copolymer rubber consisting of (D) from 10 to 60% by weight of an α,β-unsaturated nitrile, (E) from 15 to 90% by weight of a conjugated diene and (F) from 0 to 75% by weight of another ethylenically unsaturated compound copolymerizable with (D) and (E) [the sums of (A), (B) and (C) and of (D), (E) and (F) being each 100% by weight]; and (III) another blendable polymer, wherein the weight ratio of (I)/[(II) + (III)] is from 5/95 to 60/40 and the weight ratio of (II)/(III) is from 100/0 to 50/50.
Claim 4
Dependent Claim
173 words
(I) a vinylidene fluoride resin; (II) at least one rubber selected from acrylic rubbers, α,β-unsaturated nitrile-conjugated diene copolymer rubbers and hydrides of α,β-unsaturated nitrile-conjugated diene copolymer rubbers, said acrylic rubber consisting of (A) from 30 to 99.9% by weight of an alkyl acrylate and/or an alkoxy-substituted alkyl acrylate, (B) from 0.1 to 10% by weight of a cross-linkable monomer and (C) from 0 to 70% by weight of another ethylenically unsaturated compound copolymerizable with (A) and (B), and said α,8-unsaturated nitrile-conjugated diene copolymer rubber consisting of (D) from 10 to 60% by weight of an α,β-unsaturated nitrile, (E) from 15 to 90% by weight of a conjugated diene and (F) from 0 to 75% by weight of another ethylenically unsaturated compound copolymerizable with (D) and (E) [the sums of (A), (B) and (C) and of (D), (E) and (F) being each 100% by weight]; and (III) another blendable polymer, wherein the weight ratio of (I)/[(II) + (III)] is from 5/95 to 60/40 and the weight ratio of (II)/(III) is from 100/0 to 50/50.
Claim 5
Dependent Claim
27 words
A rubber composition according to Claim 1, additionally comprising up to 40 parts by weight of a plasticizer per 100 parts by weight of said polymer composition.
Claim 6
Dependent Claim
29 words
A rubber composition according to Claim 2, wherein the plasticizer is at least one of phosphoric acid derivatives, adipic acid derivatives, polyester compounds, polyether compounds and poly(ether ester) compounds.
Claim 7
Dependent Claim
29 words
A rubber composition according to any one of the preceding Claims, wherein the blendable polymer (III) is a fluororubber, an epichlorohydrin rubber, a chlorosulfonated polyethylene or a poly(vinyl chloride).
Claim 8
Dependent Claim
64 words
A rubber composition according to any one of the preceding Claims, wherein the rubber (II) is a mixture of from 100 to 60% by weight of an acrylic rubber having a Moone y viscosity [ML 1+4 (100°C)] of from 20 to 120 and from 0 to 40% by weight of an acrylic rubber having a number average molecular polymer of from 500 to 10,000.
Claim 9
Dependent Claim
76 words
A rubber composition according to any one of Claims 1 to 4, wherein the rubber (II) is a mixture of from 100 to 60% by weight of an α,β-unsaturated nitrile-conjugated diene copolymer rubber having a Mooney viscosity [ML 1+4 (1000C)] of from 20 to 150 and/or its hydride and from 0 to 40% by weight of an α,β-unsaturated nitrile-conjugated diene copolymer rubber having a number average molecular weight of from 500 to 10,000 and/or its hydride.
Claim 10
Dependent Claim
34 words
A rubber composition according to any one of Claims 1 to 4, wherein the rubber (II) is an α,β-unsaturated nitrile-conjugated diene copolymer rubber in which the diene portions are hydrogenated by 50% or more.
Claim 11
Dependent Claim
51 words
A rubber composition according to any one of Claims 1 to 4, wherein the rubber (II) is at least one rubber selected from said acrylic rubbers and said hydrides of α,B-unsaturated diene copolymer rubbers, and the weight ratio of the vinylidene fluoride resin (I)/the rubber (II) is from 5/95 to 60/40.
Claim 12
Dependent Claim
37 words
A rubber composition according to any one of Claims 1 to 4, wherein the rubber (II) is said acrylic rubber, and the weight ratio of the vinylidene fluoride resin (I)/the rubber (II) is from 5/95 to 60/40.
Claim 13
Dependent Claim
23 words
A diaphragm in which the fluid-contacting surface is made from a vulcanizable rubber composition according to any one of Claims 1 to 9.
Claim 14
Dependent Claim
38 words
A rubber laminate consisting of a plurality of rubber layers bonding strongly to one another, wherein at least one of the layers is made from a vulcanizable rubber composition according to any one of Claims 1 to 9.
Claim 15
Dependent Claim
36 words
A rubber laminate according to Claim 11, wherein the rubber layer made from said vulcanizable rubber composition is laminated to rubber layers made from rubbers selected from epichlorohydrin rubbers, chlorosulfonated polyethylenes, polychloroprenes, fluororubbers and butadiene-acrylonitrile rubbers.
Claim 16
Dependent Claim
30 words
A rubber laminate according to Claim 11 or 12, wherein each rubber layer contains an oxide or hydroxide of a metal of Group II to IV of the Periodic Table.
Claim 17
Dependent Claim
29 words
A hose having a rubber laminate structure in which the inner tube layer is made from a vulcanizable rubber composition according to any one of Claims 1 to 9.
Claim 18
Dependent Claim
18 words
A rubber hose made from a vulcanizable rubber composition according to any one of Claims 1 to 9.
References Cited (Backward Citations)
No citation records indexed.
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