US7795356B2
Active / In Force
US
⏱️ 2.5 years remaining
Rubber composition and pneumatic tire using the same
Assignee: Yokohama Rubber Co Ltd
•
Filing: 2009-04-15
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Granted: 2010-09-14
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Expires: 2029-04-15
Abstract
Abstract A rubber composition containing 100 parts by weight of a diene-based rubber, 20 to 120 parts by weight of silica, 3 to 15% by weight, based upon the weight of silica, of a sulfur-containing silane coupling agent and (A) 1,5-diazabicyclo[4,3,0]nonene-5 (DBN) having the formula (I): and/or a salt thereof or (B) 0.1 to 3.0 parts by weight of a compound having a piperidine skeleton having the formula (II) or a salt thereof and/or formula (III): wherein n indicates 3 or 5, R 1 indicates CH or N and R 2 indicates H or OH when R 1 is CH, or H when R 1 is N, and a melamine derivative of formula (IV): wherein R 3 is a methoxymethyl group (—CH 2 OCH 3 ) or methylol group (—CH 2 OH), the number of methoxymethyl groups is 3 to 6, and the number of methylol groups is 0 to 3, and/or polymer or copolymer resins of the same and a pneumatic tire using the same.
Inventors
- 👤 Satoshi Mihara
- 👤 Yoshihiro Kameda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:17
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3442; C08K5/3462; B; B60; B60C; B60C1/00; B60C1/0016; B60C11/00; B60C11/0041; B60C11/005; C08K5/3412; C08K5/3432; C08K5/3465; C08K5/3467; C08K5/3477; C08K5/3492; C08K5/34922
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
154 words
A rubber composition comprising 100 parts by weight of a diene-based rubber, 20 to 120 parts by weight of silica, 3 to 15% by weight of a sulfur-containing silane coupling agent, based upon the weight of the silica, 0.1 to 10 parts by weight of a compound having a piperidine skeleton of the formula (II) or a salt thereof and/or formula (III): wherein n indicates 3 or 5 wherein R 1 indicates CH or N; and R 2 indicates H or OH when R 1 is CH, or indicates H when R 1 is N, and 0.2 to 10 parts by weight of a melamine derivative having the formula (IV): wherein R 3 is a methoxymethyl group (—CH 2 OCH 3 ) or a methylol group (—CH 2 OH), the number of methoxymethyl groups is 3 to 6 and the number of methylol groups is 0 to 3 and/or polymer or copolymer resins thereof.
Claim 2
Dependent Claim
154 words
A rubber composition comprising 100 parts by weight of a diene-based rubber, 20 to 120 parts by weight of silica, 3 to 15% by weight of a sulfur-containing silane coupling agent, based upon the weight of the silica, 0.1 to 10 parts by weight of a compound having a piperidine skeleton of the formula (II) or a salt thereof and/or formula (III): wherein n indicates 3 or 5 wherein R 1 indicates CH or N; and R 2 indicates H or OH when R 1 is CH, or indicates H when R 1 is N, and 0.2 to 10 parts by weight of a melamine derivative having the formula (IV): wherein R 3 is a methoxymethyl group (—CH 2 OCH 3 ) or a methylol group (—CH 2 OH), the number of methoxymethyl groups is 3 to 6 and the number of methylol groups is 0 to 3 and/or polymer or copolymer resins thereof.
Claim 3
Dependent Claim
40 words
A rubber composition as claimed in claim 1 , wherein the compounding amount of the melamine derivative and/or polymer or copolymer resin thereof is 0.2 to 10 parts by weight based upon 100 parts by weight of the diene-based rubber.
Claim 4
Dependent Claim
16 words
A rubber composition as claimed in claim 1 , wherein the melamine derivative is methylol melamine.
Claim 5
Dependent Claim
54 words
A rubber composition as claimed in claim 1 , wherein a melamine derivative having the formula (IV) and/or polymer or copolymer resins thereof is produced by mixing, at a second step after mixing, the diene-based rubber, silica, sulfur-containing silane coupling agent and a compound having the formula (II) or a salt and/or formula (III).
Claim 6
Dependent Claim
15 words
A pneumatic tire using a rubber composition according to claim 1 as a tire tread.
Claim 7
Dependent Claim
18 words
A pneumatic tire as claimed in claim 5 , wherein the tire tread is a tire cap tread.
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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) | 2013-09-13 | 2014-03-15 | 2014-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2017-09-13 | 2018-03-15 | 2018-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2021-09-13 | 2022-03-15 | 2022-09-14 | $7700.00 | Window Closed / Lapsed |