EP0655480A2
Expired / Lapsed
EP
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Tread rubber composition and tyre using the composition
Assignee: Sumitomo Rubber Industries Ltd
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Filing: 1994-11-25
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Granted: —
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Expires: 2014-11-25
Abstract
Abstract A tread rubber composition of excellent hydrophobic property and water repellency suitable to a studless tyre of excellent performance on ice, comprising a diene rubber comprising at least one rubber selected from the group consisting of natural rubber, isoprene and polybutadiene as a main ingredient and, based on 100 parts by weight of the diene rubber, from 10 to 40 parts by weight of a clay comprising kaolinite as a main ingredient and having an oil absorption amount of from 50 to 70g/100g and 0.1 to 8 parts by weight of a silane coupling agent. <IMAGE>
Inventors
- 👤 Takahiro Fukumoto
- 👤 Yoko Nakada
- 👤 Yoichi C/O Uozumi Dormitory Of Mizuno
- 👤 Kazuo Kadomaru
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 03:07
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08K3/346; C08K9/00; C08K9/04; C08K9/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
81 words
A tread rubber composition comprising a diene rubber comprising at least one rubber selected from the group consisting of natural rubber, polyisoprene and polybutadiene as a main ingredient and, based on 100 parts by weight of said diene rubber, characterised by from 10 to 40 parts by weight of a clay comprising kaolinite as a main ingredient and having an oil absorption amount of from 50 to 70g/100g and from 0.1 to 8 parts by weight of a silane coupling agent.
Claim 2
Dependent Claim
26 words
A tread rubber composition according to claim 1, characterised in that the silane coupling agent is incorporated in the clay prior to mixing the rubber composition.
Claim 3
Dependent Claim
24 words
A tread rubber composition according to claim 1 or 2, characterised in that the clay is sintered at a temperature from 600 to 800°C.
Claim 4
Dependent Claim
16 words
A tread rubber composition according to claim 3, characterised in that the clay is amorphous meta-kaolin.
Claim 5
Dependent Claim
24 words
A tread rubber composition according to any of claims 1 to 4, characterised by 50 to 90 parts by weight of a reinforcing agent.
Claim 6
Dependent Claim
31 words
A tread rubber composition according to claim 5, characterised in that at least one material selected from the group consisting of carbon black and silica is used as the reinforcing agent.
Claim 7
Dependent Claim
92 words
A tread rubber composition according to any of claims 1 to 6, characterised in that the silane coupling agent used is represented by the formula: X₃SiR in which X represents an alkoxy group or a chlorine atom, R represents one of vinyl, glycide, methacryl, amino, mercapto, epoxy and imide groups, or represented by the formula: (C n H 2n+1 )₃-Si-(CH₂) m -S k -(CH₂) m Si-(C n H 2n+1 0)₃ in which n represents an integer of 1 to 4, and m and k each represents an integer of 1 to 8.
Claim 8
Dependent Claim
18 words
A tyre characterised by a tread comprising the tread rubber composition of any of claims 1 to 7.
References Cited (Backward Citations)
No citation records indexed.
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