US5780132A
Expired / Lapsed
US
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Composite rubber article and method of making
Assignee: Bridgestone Corp
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Filing: 1996-10-25
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Granted: 1998-07-14
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Expires: 2016-10-25
Abstract
Abstract A composite rubber article is obtained by joining a rubber composition based on a brominated p-methylstyrene/isobutylene copolymer to a different material such as a plastic, inorganic and metallic material through a di-, tri- or tetra-alkoxysilane compound. The copolymer is firmly joined to the different material. The invention is applicable to the manufacture of composite rubber articles such as tires, high-pressure hoses, and pneumatic springs.
Inventors
- 👤 Shinji Saitoh
- 👤 Masato Yoshikawa
- 👤 Setsuo Akiyama
- 👤 Shingo Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:21
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/04; B32B1/00; B32B1/08; B32B25/00; B32B25/04; B32B25/08; B32B38/00; B32B38/0008; C; C08; C08J; C08J5/00; C08J5/12; C08J5/124; C08K; C08K5/00; C08K5/54; F; F16; F16L; F16L11/00; F16L11/04; F16L3/00; F16L3/08; F16L3/12; F16L3/13; B32B2310/00; B32B2310/14; B32B2377/00; B32B2379/00; B32B2379/08; B32B2597/00; C08J2323/00; C08J2323/02; C08J2323/18; C08J2323/20; C08J2323/22; C08J2323/26; C08J2323/28; Y; Y10; Y10S; Y10S138/00; Y10S138/07; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1386; Y10T428/139; Y10T428/1393; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31725; Y10T428/31739; Y10T428/31743; Y10T428/3175
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
104 words
A rubber tube comprising, in order starting from the outside: (a) a rubber composition layer comprising a rubber component comprising a copolymer of 98 to 80% by weight of isobutylene and 2 to 20% by weight of a brominated para-methylstyrene with the degree of bromination of the copolymer being 10 to 80%, (b) a layer comprising an alkoxysilane compound of the formula: ##STR3## wherein each of R 1 and R 2 is a saturated or unsaturated monovalent hydrocarbon group or alkoxy group, and each of R 3 and R 4 is a saturated or unsaturated monovalent hydrocarbon group, and (c) a resinous material layer.
Claim 2
Dependent Claim
104 words
A rubber tube comprising, in order starting from the outside: (a) a rubber composition layer comprising a rubber component comprising a copolymer of 98 to 80% by weight of isobutylene and 2 to 20% by weight of a brominated para-methylstyrene with the degree of bromination of the copolymer being 10 to 80%, (b) a layer comprising an alkoxysilane compound of the formula: ##STR3## wherein each of R 1 and R 2 is a saturated or unsaturated monovalent hydrocarbon group or alkoxy group, and each of R 3 and R 4 is a saturated or unsaturated monovalent hydrocarbon group, and (c) a resinous material layer.
Claim 3
Dependent Claim
14 words
The rubber tube of claim 1 wherein said resinous material is a polyamide resin.
Claim 4
Dependent Claim
16 words
The rubber tube of claim 1 wherein said resinous material is disposed inside the rubber tube.
Claim 5
Dependent Claim
37 words
The rubber tube of claim 1, wherein a surface of said resinous material layer which is adjacent to the layer comprising the alkoxysilane compound has been modified with a low-temperature plasma treatment or a corona discharge treatment.
Claim 6
Dependent Claim
23 words
The rubber tube of claim 1, wherein, in component (a), the partially brominated copolymer of isobutylene and para-methylstyrene is 20 to 70% brominated.
Claim 7
Dependent Claim
26 words
The rubber tube of claim 1, wherein, in component (a), the para-methylstyrene is present in the copolymer in an amount of 5 to 10% by weight.
Claim 8
Dependent Claim
28 words
The rubber tube of claim 1, wherein the alkoxysilane compound is a compound selected from the group comprising methyltriethoxysilane, vinyltrimethoxysilane, phenyltrimethoxysilane, 3-aminopropyltrimethoxysilane, 3-chloropropyltrimethoxysilane, 3-mercaptopropyltimethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, and 3-ureidopropyltrimethoxysilane.
Claim 9
Dependent Claim
21 words
The rubber tube of claim 1, wherein the layer comprising the alkoxysilane compound has a thickness of 0.01 to 10 μm.
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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) | 2001-07-13 | 2002-01-12 | 2002-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-07-13 | 2006-01-12 | 2006-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-07-13 | 2010-01-12 | 2010-07-14 | $7700.00 | Window Closed / Lapsed |