US5804644A
Expired / Lapsed
US
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Hydrogenerated rubber composition
Assignee: Asahi Kasei Corp
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Filing: 1995-07-26
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Granted: 1998-09-08
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Expires: 2015-07-26
Abstract
Abstract A rubber composition comprising (A) 100 parts by weight of a raw material rubber which contains not less than 30% by weight of at least one partially hydrogenated rubber of a conjugated diene rubber, wherein 5 to 70% of the unsaturated double bonds of the conjugated diene portion thereof have been hydrogenated; (B) 10 to 150 parts by weight of a silica; (C) 0.1 to 20 parts by weight of an organo-silane coupling agent; and (D) 0.1 to 10 parts by weight of a vulcanizing agent. The rubber composition of the present invention has extremely excellent resilience, low exothermic property, and excellent wet skid resistance, and further improved processability, and therefore, by utilizing the characteristics, can be used to make industrial parts such as tires for various types of automobiles, rubber vibration insulators, belts, and the like. Especially when it is used for a tire, it can be suitably used for a tread portion, a cap tread portion, and an undertread portion of a tire, for instance, and exhibits the effect of saving fuel cost by improving fuel efficiency of a vehicle which utilizes the tire.
Inventors
- 👤 Yasunobu Nakafutami
- 👤 Akira Saito
- 👤 Tsuyoshi Sugiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:10
CPC Classifications
B; B60; B60C; B60C1/00; B60C1/0016; C; C08; C08L; C08L15/00; C08C; C08C19/00; C08C19/02; C08C19/30; C08C19/42; C08C19/44; C08K; C08K3/00; C08K3/34; C08K3/36; C08K5/00; C08K5/54; C08K5/548; Y; Y02; Y02T; Y02T10/00; Y02T10/80; Y02T10/86; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
99 words
A rubber composition comprising (A) 100 parts by weight of a raw material rubber which contains not less than 30% by weight of at least one partially hydrogenated rubber of a conjugated diene rubber having a class transition temperature in the range of -100° to 0° C., wherein 5 to 70% of the unsaturated double bonds of the conjugated diene portion thereof have been hydrogenated; (B) 10 to 150 parts by weight of a silica; (C) 0.1 to 20 parts by weight of an organo-silane coupling agent; and (D) 0.1 to 10 parts by weight of a vulcanizing agent.
Claim 2
Dependent Claim
99 words
A rubber composition comprising (A) 100 parts by weight of a raw material rubber which contains not less than 30% by weight of at least one partially hydrogenated rubber of a conjugated diene rubber having a class transition temperature in the range of -100° to 0° C., wherein 5 to 70% of the unsaturated double bonds of the conjugated diene portion thereof have been hydrogenated; (B) 10 to 150 parts by weight of a silica; (C) 0.1 to 20 parts by weight of an organo-silane coupling agent; and (D) 0.1 to 10 parts by weight of a vulcanizing agent.
Claim 3
Dependent Claim
20 words
The rubber composition according to claim 1, further comprising (E) 5 to 80 parts by weight of a carbon black.
Claim 4
Dependent Claim
45 words
The rubber composition according to claim 1, wherein the partially hydrogenated rubber is the hydrogenated product of at least one selected from the group consisting of a butadiene rubber, a styrene-butadiene rubber, an isoprene rubber, a butadiene-isoprene rubber, a styrene-isoprene rubber, and a styrene-butadiene-isoprene rubber.
Claim 5
Dependent Claim
45 words
The rubber composition according to claim 2, wherein the partially hydrogenated rubber is the hydrogenated product of at least one selected from the group consisting of a butadiene rubber, a styrene-butadiene rubber, an isoprene rubber, a butadiene-isoprene rubber, a styrene-isoprene rubber, and a styrene-butadiene-isoprene rubber.
Claim 6
Dependent Claim
50 words
The rubber composition according to claim 1, wherein the partially hydrogenated rubber is the hydrogenated product of a styrene-butadiene randomly copolymerized rubber having a butadiene content of not lower than 50% by weight and having a vinyl content of the butadiene portion thereof of not higher than 60% by weight.
Claim 7
Dependent Claim
50 words
The rubber composition according to claim 2, wherein the partially hydrogenated rubber is the hydrogenated product of a styrene-butadiene randomly copolymerized rubber having a butadiene content of not lower than 50% by weight and having a vinyl content of the butadiene portion thereof of not higher than 60% by weight.
Claim 8
Dependent Claim
26 words
The rubber composition according to claim 1, wherein the organo-silane coupling agent is at least one selected from the group consisting of bis(3-triethoxysilylpropyl)tetrasulfide, 3-thiocyanatepropyltriethoxysilane, and trimethoxysilylpropylmercaptobenzothiazoletetrasulfide.
Claim 9
Dependent Claim
26 words
The rubber composition according to claim 2, wherein the organo-silane coupling agent is at least one selected from the group consisting of bis(3-triethoxysilylpropyl)tetrasulfide, 3-thiocyanatepropyltriethoxysilane, and trimethoxysilylpropylmercaptobenzothiazoletetrasulfide.
Claim 10
Dependent Claim
10 words
A tire comprising the rubber composition according to claim 1.
Claim 11
Dependent Claim
10 words
A tire comprising the rubber composition according to claim 2.
Claim 12
Dependent Claim
10 words
A tire comprising the rubber composition according to claim 3.
Claim 13
Dependent Claim
10 words
A tire comprising the rubber composition according to claim 4.
Claim 14
Dependent Claim
10 words
A tire comprising the rubber composition according to claim 5.
Claim 15
Dependent Claim
10 words
A tire comprising the rubber composition according to claim 6.
Claim 16
Dependent Claim
10 words
A tire-tread comprising the rubber composition according to claim 1.
Claim 17
Dependent Claim
10 words
A tire-tread comprising the rubber composition according to claim 2.
Claim 18
Dependent Claim
10 words
A tire-tread comprising the rubber composition according to claim 3.
Claim 19
Dependent Claim
10 words
A tire-tread comprising the rubber composition according to claim 4.
Claim 20
Dependent Claim
10 words
A tire-tread comprising the rubber composition according to claim 5.
Claim 21
Dependent Claim
10 words
A tire-tread comprising the rubber composition according to claim 6.
Claim 22
Dependent Claim
11 words
A vulcanized product prepared from the rubber composition of claim 1.
Claim 23
Dependent Claim
30 words
The rubber composition according to claim 1, wherein said partially hydrogenated rubber of a conjugated diene rubber has a glass transition temperature in the range of -100° to -20° C.
Claim 24
Dependent Claim
30 words
The rubber composition according to claim 22, wherein said partially hydrogenated rubber of a conjugated diene rubber has a glass transition temperature in the range of -95° to -30° C.
Claim 25
Dependent Claim
10 words
A tire comprising the rubber composition according to claim 22.
Claim 26
Dependent Claim
10 words
A tire comprising the rubber composition according to claim 23.
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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) | 2001-09-07 | 2002-03-09 | 2002-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-09-07 | 2006-03-09 | 2006-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-09-07 | 2010-03-09 | 2010-09-08 | $7700.00 | Window Closed / Lapsed |