Patent US4968753A successfully refreshed from Google Patents.
US4968753A
Expired / Lapsed
US
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Acrylonitrile rubber with quinoline compound, organic peroxide, crosslinking agent
Assignee: Zeon Corp
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Filing: 1988-07-13
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Granted: 1990-11-06
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Expires: 2008-07-13
Abstract
Abstract A rubber composition capable of giving a vulcanizate having improved ozone resistance. The composition comprises a nitrile group-containing highly saturated polymer rubber having an iodine value of not more than 80, an organic peroxide, a crosslinking coagent and a quinoline-type stabilizer.
Inventors
- 👤 Motofumi Oyama
- 👤 Tetsu Ohishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:29
CPC Classifications
F; F16; F16G; F16G1/00; F16G1/28; C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3442; C08K5/3462; C08K5/3465; C08L; C08L15/00; C08L15/005; F16G5/00; F16G5/04; F16G5/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
46 words
A rubber composition capable of giving a vulcanizate having improved ozone resistance, said composition comprising 100 parts by weight of a nitrile group-containing highly saturated polymer rubber having an iodine value of not more than 80, 0.5 to 10 parts by weight of an organic peroxide,
Claim 2
Dependent Claim
46 words
A rubber composition capable of giving a vulcanizate having improved ozone resistance, said composition comprising 100 parts by weight of a nitrile group-containing highly saturated polymer rubber having an iodine value of not more than 80, 0.5 to 10 parts by weight of an organic peroxide,
Claim 3
Dependent Claim
21 words
1 to 15 parts by weight of a crosslinking coagent, and 0.1 to 5 parts by weight of a quinoline-type stabilizer.
Claim 4
Dependent Claim
21 words
1 to 15 parts by weight of a crosslinking coagent, and 0.1 to 5 parts by weight of a quinoline-type stabilizer.
Claim 5
Dependent Claim
61 words
The rubber composition of claim 1 wherein the nitrile-containing highly saturated polymer rubber is at least one rubber selected from the group consisting of rubbers obtained by hydrogenating the conjugated diene units of unsaturated nitrile/conjugated diene copolymers, unsaturated nitrile/conjugated diene/ethylenically unsaturated monomer terpolymers, rubbers obtained by hydrogenating the conjugated diene units of the above terpolymers, and unsaturated nitrile/ethylenically unsaturated copolymer rubbers.
Claim 6
Dependent Claim
28 words
The rubber composition of claim 1 wherein the crosslinking coagent is at least one compound selected from the group consisting of polyfunctional monomers, liquid polybutadiene and oxime compounds.
Claim 7
Dependent Claim
27 words
The rubber composition of claim 1 wherein the nitrile group-containing highly saturated polymer rubber has a nitrile group-containing monomer unit content of 5 to 60% by weight.
Claim 8
Dependent Claim
26 words
The rubber composition of claim 1 wherein the iodine value of the nitrile group-containing highly saturated polymer rubber is in the range of 0 to 60.
Claim 9
Dependent Claim
66 words
The rubber composition of claim 1 wherein the nitrile group-containing highly saturated polymer rubber is selected from the group consisting of hydrogenated butadiene/acrylonitrile copolymer rubber, hydrogenated isoprene/butadiene/acrylonitrile copolymer rubber, hydrogenated isoprene/acrylonitrile copolymer rubber, butadiene/methyl acrylate/acrylonitrile copolymer rubber, hydrogenated butadiene/methyl acrylate/acrylonitrile copolymer rubber, butadiene/acrylic acid/acrylonitrile copolymer rubber, hydrogenated butadiene/acrylic acid/acrylonitrile copolymer rubber, butadiene/ethylene/acrylonitrile copolymer rubber, butyl acrylate/ethoxyethyl acrylate/vinyl chloroacetate/acrylonitrile copolymer rubber and butyl acrylate/ethoxyethyl acrylate/vinylnorbornene/acrylonitrile copolymer rubber.
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EP0144805A2
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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) | 1993-11-05 | 1994-05-07 | 1994-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-05 | 1998-05-07 | 1998-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-05 | 2002-05-07 | 2002-11-06 | $7700.00 | Window Closed / Lapsed |