US5679728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface-treated carbon black and rubber composition containing same
Assignee: Yokohama Rubber Co Ltd
•
Filing: 1995-11-02
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Granted: 1997-10-21
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Expires: 2015-11-02
Abstract
Abstract A rubber composition containing a cross-linkable rubber component and a carbon black having silica adhered to the surface thereof and a silica surface-treated carbon black suitable for use in tire tread where the surface-treated carbon black has a nitrogen specific surface area (N 2 SA) of 20 to 300 m 2 /g, a ratio IA o /IA f of the adsorption amount of iodine (IA o ) and the adsorption amount of iodine after treatment by hydrogen fluoride (IA f ) of at least 0.30 but less than 1.0, and a ratio IA e /IA ef of the adsorption amount of iodine after extraction from a rubber compound (IA e ) and the value of the same after treatment by hydrogen fluoride (IA ef ) of at least 0.30 but less than 1.0.
Inventors
- 👤 Tetsuji Kawazura
- 👤 Hiroyuki Kaido
- 👤 Kouichi Ikai
- 👤 Fumito Yatsuyanagi
- 👤 Masayuki Kawazoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:39
CPC Classifications
C; C08; C08L; C08L21/00; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C08K; C08K3/00; C08K3/02; C08K3/04; C08K9/00; C08K9/02; C01; C01P; C01P2006/00; C01P2006/12; C01P2006/19
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
23 words
A rubber composition comprising at least one cross-linkable rubber component and a silica surface-treated carbon black having silica adhered to the surface thereof.
Claim 2
Dependent Claim
23 words
A rubber composition comprising at least one cross-linkable rubber component and a silica surface-treated carbon black having silica adhered to the surface thereof.
Claim 3
Dependent Claim
33 words
A rubber composition as claimed in claim 1, wherein the amount of the silica surface-treated carbon black is 10 to 200 parts by weight per 100 parts by weight of the rubber component.
Claim 4
Dependent Claim
74 words
A rubber composition as claimed in claim 1 further comprising a silane coupling agent in an amount of S (parts by weight) satisfying the following equation, with respect to the amount of W (parts by weight) of the silica surface-treated carbon black: W×0.05× 1-(IA.sub.o /IA.sub.f)!≦S≦W×0.20 wherein, IA o is the adsorption amount of iodine of the silica surface-treated carbon black and IA f is the adsorption amount of iodine after treated by hydrogen fluoride.
Claim 5
Dependent Claim
26 words
A rubber composition as claimed in claim 1, wherein the content of the silica in the silica surface-treated carbon black is 0.1 to 50% by weight.
Claim 6
Dependent Claim
58 words
A rubber composition as claimed in claim 1 suitable for use in tire tread comprising 100 parts by weight of at least one rubber component selected from cross-linkable rubbers and 30 to 150 parts by weight of silica surface-treated carbon black, the content of said silica in the silica surface-treated carbon black being 0.1 to 50% by weight.
Claim 7
Dependent Claim
78 words
A rubber composition as claimed in claim 1 suitable for use in tire tread comprising 100 parts by weight of at least one rubber component selected from cross-linkable rubbers and 30 to 150 parts by weight of a filler composed of 10% by weight or more of a silica surface-treated carbon black and 90% by weight or less of carbon black, the content of the silica in the silica surface-treated carbon black being 0.1 to 50% by weight.
Claim 8
Dependent Claim
61 words
A rubber composition as claimed in claim 1 suitable for use in tire undertread or side tread, comprising 100 parts by weight of at least one rubber component selected from cross-linkable rubbers and 30 to 120 parts by weight of silica surface-treated carbon black, the content of the silica in the silica surface-treated carbon black being 0.1 to 50% by weight.
Claim 9
Dependent Claim
80 words
A rubber composition as claimed in claim 1 suitable for use in tire undertread or side tread, comprising 100 parts by weight of at least one rubber component selected from cross-linkable rubbers and 30 to 120 parts by weight of a filler comprising 10% by weight or more of the silica surface-treated carbon black and 90% by weight or less of carbon black, the content of the silica in the silica surface-treated carbon black being 0.1 to 50% by weight.
Claim 10
Dependent Claim
59 words
A rubber composition as claimed in claim 1, suitable for use in tire tread, comprising of 100 parts by weight of at least one rubber component selected from natural rubber, polybutadiene rubber, styrene-butadiene rubber, polybutadiene rubber containing 1,2-syndiotatic polybutadiene, and natural rubber and polybutadiene rubber containing microfilaments and 30 to 150 parts by weight of silica surface-treated carbon black.
Claim 11
Dependent Claim
30 words
A rubber composition as claimed in claim 1, wherein the nitrogen specific surface area (N 2 SA) of the silica surface-treated carbon black is 20 to 300 m 2 /g.
Claim 12
Dependent Claim
94 words
A rubber composition as claimed in claim 1, wherein the silica surface-treated carbon black has a ration IA o /IA f of the adsorption amount of iodine (IA o ) and the adsorption amount of iodine after treatment by hydrogen fluoride (IA f ) of at least 0.30 but less than 1.0 and a ratio IA/IA ef of the adsorption amount of iodine after extraction from a rubber compound (IA e ) and the value of the same after treatment by hydrogen fluoride (IA ef ) of at least 0.30 but less than 1.0.
Claim 13
Dependent Claim
118 words
A silica surface-treated carbon black comprising carbon black having silica adhered to the surface thereof, wherein the nitrogen specific surface area (N 2 SA) of the silica surface-treated carbon black is 20 to 300 m 2 /g, the ratio IA o /IA f of the adsorption amount of iodine (IA o ) and the adsorption amount of iodine after treatment by hydrogen fluoride (IA f ) is at least 0.30 but less than 1.0, and the ratio IA e /IA ef of the adsorption amount of iodine after extraction from a rubber compound (IA e ) and the value of the same after treatment by hydrogen fluoride (IA ef ) is at least 0.30 and less but 1.0.
Claim 14
Dependent Claim
118 words
A silica surface-treated carbon black comprising carbon black having silica adhered to the surface thereof, wherein the nitrogen specific surface area (N 2 SA) of the silica surface-treated carbon black is 20 to 300 m 2 /g, the ratio IA o /IA f of the adsorption amount of iodine (IA o ) and the adsorption amount of iodine after treatment by hydrogen fluoride (IA f ) is at least 0.30 but less than 1.0, and the ratio IA e /IA ef of the adsorption amount of iodine after extraction from a rubber compound (IA e ) and the value of the same after treatment by hydrogen fluoride (IA ef ) is at least 0.30 and less but 1.0.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-10-20 | 2001-04-21 | 2001-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-10-20 | 2005-04-21 | 2005-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-10-20 | 2009-04-21 | 2009-10-21 | $7700.00 | Window Closed / Lapsed |