US3861980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite of polyester bonded to rubber, method for making the same and composition
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1972-11-29
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Granted: 1975-01-21
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Expires: 1992-11-29
Abstract
Abstract Rubber compounds are readily bonded to polyester reinforcing elements, particularly tire cords of polyester fibers, using a one-step dip process in which the dip consists essentially of an alkaline aqueous dispersion of a minor amount by weight of a mixture of a major amount by weight of a rubbery vinyl pyridine copolymer and a minor amount by weight of a heat reactable 2,6bis(2,4-dihydroxy phenylmethyl)-4-chlorophenol composition. High H-adhesions are obtained with this process.
Inventors
- 👤 Richard M Wise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:59
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J2321/00; Y; Y10; Y10S; Y10S156/00; Y10S156/91
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
144 words
A METHOD FOR ADHERING A POLYESTER REINFORCING ELEMENT TO A RUBBER COMPOUND WHCIH COMPRISES TREATING SAID ELEMENT WITH A COMPOSITION ESSENTIALLY OF AN AQUEOUS ALKALINE DISPERSION OF FROM ABOUT 10 TO 30% BY WEIGHT (AS DRY SOLIDS) OF A MIXTURE OF A RUBBERY VINYL PYRIDINE COPOLYMER AND A HEAT REACTABLE 2,6-BIS(2,4-DIHYDROXY PHENYLMETHYL)-4CHLOROPHENOL COMPOSITION, THE PARTS BY WEIGHT RATIO OF SAID COPOLYMER TO SAID CHLOROPHENOLIC COMPOUND BEING FROM ABOUT 100:10 TO 100:75, HEAT TREATING SAID ELEMENT TO REMOVE THE WATER AND TO HEATSET THE SOLIDS FROM SAID COMPOSITION AND TO DEPOSIT ON SAID WELEMENT FROM SAID COMPOSITION A TOTAL OF FROM ABOUT 3 TO 7% BY WEIGHT (SOILDS), COOLING SAID TREATED ELEMENT, COMBINING SAID COOLED TREATED ELEMENT WITH AN UNVULCANIZED VULCANIZABLE RUBBER COMPOUND, AND VULCANIZING THE SAME, SAID HEAT TREATMENT BEING CONDUCTED AT TEMPERATURES OF FROM ABOUT 300*F. FOR FROM ABOUT 30 TO 150 SECONDS.
Claim 2
Dependent Claim
67 words
A method according to claim 2 where said rubbery vinyl pyridine copolymer is a copolymer of from about 60 to 80% by weight of butadiene-1,3, from 7 to 22% by weight of styrene, and from 7 to 22% by weight of 2-vinyl pyridine, and where said chlorophenolic composition has an average molecular weight of up to about 800 and a melting point of up to about 240*C.
Claim 3
Dependent Claim
22 words
A method according to claim 3 where said reinforcing element is a cord of linear long chain synthetic substantially crystalline poly(ethylene terephthalate).
References Cited (Backward Citations)
US2968587A
Cited
US3437122A
Cited
US3411980A
Cited
US3660202A
Cited
US3419464A
Cited
US3578613A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |