Patent US3332086A successfully refreshed from Google Patents.
US4091002A
Expired / Lapsed
US
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Vulcanizable elastomer from thiodiethanol and an oligomeric polyester
Assignee: Wyeth Holdings LLC
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Filing: 1976-10-14
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Granted: 1978-05-23
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Expires: 1996-10-14
Abstract
Abstract Vulcanizable elastomeric compositions derived from thiodiethanol and more particularly, vulcanizable elastomeric compositions comprising the reaction product of a major proportion of thiodiethanol and a minor proportion of a low molecular weight, hydroxyl terminated aromatic or cycloaliphatic polyester.
Inventors
- 👤 Tsi Tieh Li
- 👤 Robert Saxon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:41
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
128 words
A vulcanizable elastomeric composition comprising the condensation product of (a) thiodiethanol, (b) one or more oligomeric diols represented by the structure: ##STR5## wherein G represents a divalent, open-chain alkylene group containing from 3 to 8 carbon atoms, X represents a divalent aromatic or cycloaliphatic hydrocarbon radical, and y is a number from about 1.5 to 6, and (c) one or more aliphatic diols different from (a) or (b); said composition being characterized as comprising at least about 50 mole percent thiodiethanol, from about 0.5 to about 8 mole percent of said oligomeric diol, the remainder being said aliphatic diol or diols, and further provided that from about 1 to 10 mole percent thereof comprises an aliphatic diol containing an external allylic double bond represented by the group: ##STR6##
Claim 2
Dependent Claim
128 words
A vulcanizable elastomeric composition comprising the condensation product of (a) thiodiethanol, (b) one or more oligomeric diols represented by the structure: ##STR5## wherein G represents a divalent, open-chain alkylene group containing from 3 to 8 carbon atoms, X represents a divalent aromatic or cycloaliphatic hydrocarbon radical, and y is a number from about 1.5 to 6, and (c) one or more aliphatic diols different from (a) or (b); said composition being characterized as comprising at least about 50 mole percent thiodiethanol, from about 0.5 to about 8 mole percent of said oligomeric diol, the remainder being said aliphatic diol or diols, and further provided that from about 1 to 10 mole percent thereof comprises an aliphatic diol containing an external allylic double bond represented by the group: ##STR6##
Claim 3
Dependent Claim
19 words
The composition of claim 1 wherein X is selected from the group consisting of m-phenylene, p-phenylene, m-hexahydrophenylene, and p-hexahydrophenylene.
Claim 4
Dependent Claim
21 words
The composition of claim 1 wherein said aliphatic diol containing an external allylic double bond is the monallyl ether of trimethylolpropane.
Claim 5
Dependent Claim
17 words
The composition of claim 1 wherein G is 1,4-butylene, X is p-phenylene and y is about 2.
Claim 6
Dependent Claim
21 words
The composition of claim 4 wherein said aliphatic diol containing an external allylic double bond is the monoallyl ether of trimethylolpropane.
References Cited (Backward Citations)
US2988532A
Cited
US4028305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |