US4614779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil- and heat-resistant rubber composition comprising nitrile containing rubber and fluorine containing rubber
Assignee: Zeon Corp
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Filing: 1985-05-13
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Granted: 1986-09-30
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Expires: 2005-05-13
Abstract
Abstract An oil- and heat-resistant rubber composition comprising a nitrile group-containing hydrocarbon rubber having an iodine number of not more than 120 and a fluorine-containing rubber.
Inventors
- 👤 Noboru Watanabe
- 👤 Hideyoshi Shomoda
- 👤 Yoichiro Kubo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:23
CPC Classifications
C; C08; C08L; C08L15/00; C08L15/005; C08L27/00; C08L27/02; C08L27/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
42 words
An oil- and heat-resistant rubber composition comprising a nitrile group-containing diene hydrocarbon rubber or an acrylate rubber, having a nitrile content of about 5 to 60% by weight and having an iodine number of not more than 120 and a fluorine-containing rubber.
Claim 2
Dependent Claim
42 words
An oil- and heat-resistant rubber composition comprising a nitrile group-containing diene hydrocarbon rubber or an acrylate rubber, having a nitrile content of about 5 to 60% by weight and having an iodine number of not more than 120 and a fluorine-containing rubber.
Claim 3
Dependent Claim
28 words
The rubber composition of claim 1 comprising 5 to 95% by weight of the nitrile group-containing hydrocarbon rubber and 95 to 5% by weight of the fluorine-containing rubber.
Claim 4
Dependent Claim
64 words
The rubber composition of any one of claims 1 to 2 wherein the nitrile group-containing hydrocarbon rubber is at least one rubber selected from the group consisting of rubbers obtained by hydrogenating the conjugated diene unit portion of unsaturated nitrile/conjugated diene copolymer rubbers, unsaturated nitrile/conjugated diene/ethylenically unsaturated monomer terpolymer rubbers, and rubbers obtained by hydrogenating the conjugated diene unit portion of said terpolymer rubbers.
Claim 5
Dependent Claim
23 words
The rubber composition of claim 1 or 2 wherein the nitrile group-containing hydrocarbon rubber has an iodine number of from 0 to 100.
Claim 6
Dependent Claim
59 words
The rubber composition of claim 1 or 2 wherein the nitrile group-containing hydrocarbon rubber is selected from the group consisting of hydrogenation products of butadiene/acrylonitrile copolymer rubber and isoprene/acrylonitrile copolymer rubber; butadiene/methylacrylate/acrylonitrile copolymer rubber, butadiene/acrylic acid/acrylonitrile copolymer rubber, and butadiene/ethylene/acrylonitrile copolymer rubber, hydrogenation products of these rubbers; butylacrylate/ethoxyethylacrylate/vinyl chloroacetate/acrylonitrile copolymer rubber, ethylacrylate/ethylene/acrylonitrile copolymer rubber and butylacrylate/ethoxyethylacrylate/vinyl norbornene/acrylonitrile copolymer rubber.
Claim 7
Dependent Claim
46 words
The rubber composition of claim 1 or 2 wherein the fluorine-containing rubber is selected from the group consisting of tetrafluoroethylene/propylene copolymer rubber, tetrafluoroethylene/perfluoroalkylperfluorovinyl ether copolymer rubber, vinylidene fluoride/hexafluoropropylene copolymer rubber, vinylidene fluoride/pentafluoropropylene copolymer rubber, silicon oligomers containing a hexafluoropropylene vinyl group, fluorosilicone rubber and fluorophosphazene rubber.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-29 | 1990-03-31 | 1990-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-29 | 1994-03-31 | 1994-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-29 | 1998-03-31 | 1998-09-30 | $7700.00 | Window Closed / Lapsed |