US4028305A
Expired / Lapsed
US
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Vulcanizable elastomers derived from thiodiethanol
Assignee: Wyeth Holdings LLC
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Filing: 1975-10-31
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Granted: 1977-06-07
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Expires: 1995-10-31
Abstract
Abstract Vulcanizable elastomeric compositions are disclosed which are the reaction products of 80 to 90 mole percent of a mixture of thiodiethanol and one or more aliphatic or cycloaliphatic diols and 20 to 10 mole percent of an aromatic or cycloaliphatic dicarboxylic acid wherein the diol content is at least 50 mole percent thiodiethanol and about 1 to 10 mole percent of a diol providing pendant allylic unsaturation.
Inventors
- 👤 Tsi Tieh Li
- 👤 Robert Saxon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:29
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G65/38; C08G65/40; C08G65/4006; C08G63/00; C08G63/68; C08G63/688; C08G63/6884; C08G63/6888; C08G2650/00; C08G2650/02; C08G2650/20; C08L; C08L2312/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
97 words
A vulcanizable elastomeric composition comprising the polymeric condensation reaction product of 80 to 90 mole percent of a mixture of thiodiethanol and one or more aliphatic or cycloaliphatic diols and, correspondingly, from 20 to 10 mole percent of an aromatic or cycloaliphatic dicarboxylic acid wherein at least 50 mole percent of the diol content is thiodiethanol and from about 1 to 10 mole percent of the diol content is a diol which provides an allylic double bond in a group pendant from the polymeric chain, said reaction product having a Mooney value of about 20 to 60.
Claim 2
Dependent Claim
97 words
A vulcanizable elastomeric composition comprising the polymeric condensation reaction product of 80 to 90 mole percent of a mixture of thiodiethanol and one or more aliphatic or cycloaliphatic diols and, correspondingly, from 20 to 10 mole percent of an aromatic or cycloaliphatic dicarboxylic acid wherein at least 50 mole percent of the diol content is thiodiethanol and from about 1 to 10 mole percent of the diol content is a diol which provides an allylic double bond in a group pendant from the polymeric chain, said reaction product having a Mooney value of about 20 to 60.
Claim 3
Dependent Claim
28 words
The composition of claim 1 wherein an aliphatic or cycloaliphatic diol free of sulfur and allylic unsaturation constitutes up to about 40 mole percent of said diol content.
Claim 4
Dependent Claim
13 words
The composition of claim 1 wherein said aromatic dicarboxylic acid is terephthalic acid.
Claim 5
Dependent Claim
21 words
The composition of claim 1 wherein said diol which provides an allylic double bond is the monoallyl ether of trimethylol propane.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-06 | 1980-12-06 | 1981-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-06 | 1984-12-06 | 1985-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-06 | 1988-12-06 | 1989-06-07 | $7700.00 | Window Closed / Lapsed |