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US4625005A
Expired / Lapsed
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Multi-component copolymer rubber, a process for producing the same, and a rubber composition containing the multi-component copolymer rubber
Assignee: JSR Corp
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Filing: 1985-03-26
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Granted: 1986-11-25
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Expires: 2005-03-26
Abstract
Abstract A multi-component copolymer rubber consisting essentially of (A) 20 to 69.5% by weight of a cyano-substituted alkyl (meth)acrylate, (B) 30 to 79.5% by weight of an alkyl acrylate, (C) 0.5 to 10% by weight of a crosslinkable monomer and (D) 0 to 10% by weight of other ethylenically unsaturated monomer copolymerizable with (A), (B) and (C), excels in heat resistance, ozone resistance, sour gasoline resistance and sour gasohol resistance. These properties of said multi-component copolymer rubber can further be improved by incorporating into the copolymer rubber a crosslinking agent, a metal salt, a vinylidene fluoride polymer, a vinyl chloride resin or other multi-component copolymer rubber.
Inventors
- 👤 Toshio Miyabayashi
- 👤 Nobuyuki Sakabe
- 👤 Yoshiyuki Udagawa
- 👤 Hiroji Enyo
- 👤 Yasuhiko Takemura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:03
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/34; C08F220/12; F; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
88 words
A multi-component copolymer rubber, consisting essentially of: (A) 20 to 69.5% by weight of a cyano-substituted alkyl(methy)acrylate of the formula ##STR9## wherein R 1 is hydrogen or methyl and R 2 CN is a cyanoalkyl group of 2 to 12 carbon atoms, (B) 30 to 79.5% by weight of an alkyl acrylate, (C) 0.5 to 10% by weight of an epoxy group-containing, ethylenically unsaturated compound as a crosslinkable monomer, and (D) 0 to 10% by weight of another ethylenically unsaturated monomer copolymerizable with components (A), (B) and (C).
Claim 2
Dependent Claim
88 words
A multi-component copolymer rubber, consisting essentially of: (A) 20 to 69.5% by weight of a cyano-substituted alkyl(methy)acrylate of the formula ##STR9## wherein R 1 is hydrogen or methyl and R 2 CN is a cyanoalkyl group of 2 to 12 carbon atoms, (B) 30 to 79.5% by weight of an alkyl acrylate, (C) 0.5 to 10% by weight of an epoxy group-containing, ethylenically unsaturated compound as a crosslinkable monomer, and (D) 0 to 10% by weight of another ethylenically unsaturated monomer copolymerizable with components (A), (B) and (C).
Claim 3
Dependent Claim
22 words
The multi-component copolymer rubber according to claim 1, wherein the cyano-substituted alkyl acrylate (A) is 2-cyanoethyl acrylate, 3-cyanopropyl acrylate or 4-cyanobutyl acrylate.
Claim 4
Dependent Claim
29 words
The multi-component copolymer rubber according to claim 1, wherein the alkyl acrylate (B) is ethyl acrylate, propyl acrylate, n-butyl acrylate, n-pentyl acrylate, n-hexyl acrylate, 2-ethylhexyl acrylate or n-octyl acrylate.
Claim 5
Dependent Claim
25 words
The multi-component copolymer rubber according to claim 1, wherein the epoxy group-containing, ethylenically unsaturated compound (C-III) is allyl glycidyl ether, glycidyl methacrylate or glycidyl acrylate.
Claim 6
Dependent Claim
23 words
A fuel hose having a layer of a multi-component copolymer rubber according to claim 1 on the side in contact with the fuel.
References Cited (Backward Citations)
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US4237258A
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US4333963A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-24 | 1990-05-26 | 1990-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-24 | 1994-05-26 | 1994-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-24 | 1998-05-26 | 1998-11-25 | $7700.00 | Window Closed / Lapsed |