US4486480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber hose comprising a liquid nitrile-butadiene copolymer incorporated into a partially hydrogenated unsaturated acrylonitrile-butadiene copolymer
Assignee: Zeon Corp
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Filing: 1982-11-19
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Granted: 1984-12-04
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Expires: 2002-11-19
Abstract
Abstract An oil resistant rubber hose having an internal layer made of a vulcanized rubber composition of, or composed mainly of, partially hydrogenated unsaturated nitrile-conjugated diene copolymer rubber in which at least 50% of the conjugated diene units is hydrogenated. This rubber hose is superior in resistance to deteriorated gasoline and low temperature, and is suitable for the automobile fuel line.
Inventors
- 👤 Tadaoki Okumoto
- 👤 Masatoshi Sugimoto
- 👤 Takashi Kawazoe
- 👤 Seiichi Sahara
- 👤 Tetsuo Yamada
- 👤 Kinrou Hashimoto
- 👤 Masayoshi Ichikawa
- 👤 Kenichi Funato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:33
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; F16L11/085; C; C08; C08L; C08L15/00; C08L15/005; C08K; C08K5/00; C08K5/0008; C08K5/0016; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L9/00; C08L9/02; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1386
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
58 words
A rubber hose having the internal layer made of a vulcanized rubber composition of partially hydrogenated unsaturated nitrile-conjugated diene copolymer rubber in which at least 50% of the conjugated diene units are hydrogenated, said copolymer rubber being incorporated with more than 2 wt% of liquid unsaturated nitrile-conjugated diene copolymer having a number-average molecular weight of 500 to 10,000.
Claim 2
Dependent Claim
58 words
A rubber hose having the internal layer made of a vulcanized rubber composition of partially hydrogenated unsaturated nitrile-conjugated diene copolymer rubber in which at least 50% of the conjugated diene units are hydrogenated, said copolymer rubber being incorporated with more than 2 wt% of liquid unsaturated nitrile-conjugated diene copolymer having a number-average molecular weight of 500 to 10,000.
Claim 3
Dependent Claim
66 words
A rubber hose as claimed in claim 1, wherein the unsaturated nitrile-conjugated diene copolymer rubber to be hydrogated contains 10 to 70 wt% of unsaturated nitrile, and the liquid unsaturated nitrile-conjugated diene copolymer is composed of 10 to 70 wt% of unsaturated nitrile, 20 to 80 wt% of conjugated diene, and 0 to 20 wt% of vinyl monomer copolymerizable with the unsaturated nitrile and conjugated diene.
Claim 4
Dependent Claim
67 words
A rubber hose having the internal layer made of a vulcanized rubber composition of partially hydrogenated unsaturated nitrile-conjugated diene copolymer rubber in which at least 50% of the conjugated diene units are hydrogenated, said copolymer rubber being incorporated with more than 2 wt% of liquid unsaturated nitrile-conjugated diene copolymer having a number-average molecular weight of 500 to 10,000 and more than 5 wt% of polyvinyl chloride resin.
Claim 5
Dependent Claim
67 words
A rubber hose having the internal layer made of a vulcanized rubber composition of partially hydrogenated unsaturated nitrile-conjugated diene copolymer rubber in which at least 50% of the conjugated diene units are hydrogenated, said copolymer rubber being incorporated with more than 2 wt% of liquid unsaturated nitrile-conjugated diene copolymer having a number-average molecular weight of 500 to 10,000 and more than 5 wt% of polyvinyl chloride resin.
Claim 6
Dependent Claim
66 words
A rubber hose as claimed in claim 3, wherein the unsaturated nitrile-conjugated diene copolymer rubber to be hydrogenated contains 10 to 70 wt% of unsaturated nitrile, and the liquid unsaturated nitrile-conjugated diene copolymer is composed of 10 to 70 wt% of unsaturated nitrile, 20 to 80 wt% of conjugated diene, and 0 to 20 wt% of vinyl monomer copolymerizable with the unsaturated nitrile and conjugated diene.
References Cited (Backward Citations)
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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) | 1987-12-04 | 1988-06-04 | 1988-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-04 | 1992-06-04 | 1992-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-04 | 1996-06-04 | 1996-12-04 | $7700.00 | Window Closed / Lapsed |