US4230168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane tire filling material with plasticizer incorporated therein
Assignee: Bridgestone Corp
•
Filing: 1978-10-27
•
Granted: 1980-10-28
•
Expires: 1998-10-27
Abstract
Abstract Tire filling material having high resilience produced by curing a mixture of (a) a polyoxypropylene polyol having an OH equivalent molecular weight of 900-1,800 and a functionality of 2-4, (b) a polyisocyanate, and (c) a plasticizer in the presence of a catalyst where the equivalent ratio (NCO/OH) of isocyanate groups in component (b) to hydroxyl groups in component (a) is from 0.8-2.0 and the amount of component (c) is 10-200 parts by weight per 100 parts by weight of component (a).
Inventors
- 👤 Hiroshi Kaneda
- 👤 Yoji Watabe
- 👤 Akio Souma
- 👤 Yasuyuki Ura
- 👤 Michio Ishii
- 👤 Shiro Anzai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:22
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; B; B29; B29D; B29D30/00; B29D30/04; B60; B60C; B60C7/00; B60C7/10; B60C7/101; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4833; C08G18/4837; C08G18/4841; C08K5/02; C08L; C08L75/00; C08L75/04; C08L75/08; C08L91/00; C08L91/06; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10279; Y10T152/10378
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
101 words
A tire filled with elastomeric material having high resilience, the material being produced by curing a mixture of (a) a polyoxypropylene polyol having an OH equivalent molecular weight of 900-1,800 and a functionality of 2-4, (b) a polyisocyanate, and (c) a chlorinated paraffin or dialkyl phthalate plasticizer miscible with the polyoxypropylene polyol in the presence of a catalyst where the equivalent ratio (NCO/OH) of isocyanate groups in the component (b) to hydroxyl groups in the component (a) is from 0.8-2.0 and the amount of the component (c) is 10-200 parts by weight per 100 parts by weight of the component (a).
Claim 2
Dependent Claim
101 words
A tire filled with elastomeric material having high resilience, the material being produced by curing a mixture of (a) a polyoxypropylene polyol having an OH equivalent molecular weight of 900-1,800 and a functionality of 2-4, (b) a polyisocyanate, and (c) a chlorinated paraffin or dialkyl phthalate plasticizer miscible with the polyoxypropylene polyol in the presence of a catalyst where the equivalent ratio (NCO/OH) of isocyanate groups in the component (b) to hydroxyl groups in the component (a) is from 0.8-2.0 and the amount of the component (c) is 10-200 parts by weight per 100 parts by weight of the component (a).
Claim 3
Dependent Claim
22 words
A tire according to claim 1 in which the polyoxypropylene polyol is a polyoxypropylene polyol having ethylene oxide addition-polymerized to the terminals.
Claim 4
Dependent Claim
30 words
A tire according to claim 2 in which the amount of ethylene oxide addition-polymerized is 5-30% by weight based on the polyoxypropylene polyol having ethylene oxide addition-polymerized to the terminals.
Claim 5
Dependent Claim
27 words
A tire according to claim 1 in which the polyisocyanate is a member selected from the group consisting of diphenylmethane-4,4'-diisocyanate, polymethylene polyphenyl polyisocyanate, 2,4- and 2,6-tolylene diisocyanate.
Claim 6
Dependent Claim
14 words
A tire according to claim 1 in which the dialkyl phthalate is dioctyl phthalate.
Claim 7
Dependent Claim
13 words
A tire according to claim 1 in which the catalyst is 2,4,6-tris(dimethylaminomethyl) phenol.
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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) | 1983-10-28 | 1984-04-28 | 1984-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-28 | 1988-04-28 | 1988-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-28 | 1992-04-28 | 1992-10-28 | $7700.00 | Window Closed / Lapsed |