US3884873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arylene sulfide polymer cured with the aid of certain compounds
Assignee: Phillips Petroleum Co
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Filing: 1973-11-29
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Granted: 1975-05-20
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Expires: 1993-11-29
Abstract
Abstract Certain compounds are incorporated into arylene sulfide polymers. The resulting composition is precured to give a polymer of improved processability and/or applied to a substrate and cured to give a coating having improved characteristics.
Inventors
- 👤 James N Short
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:31
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/134; C08K5/1345; C08K5/10; C08L; C08L81/00; C08L81/02; C08L85/00; C08L85/02; C09; C09D; C09D181/00; C09D181/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
29 words
A COMPOSITION OF MATTER COMPRISING AN ARYLENE SULFIDE POLYMER AND AN AMOUNT SUFFICIENT TO REDUCE MELT FLOW OF SAID POLYMER OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
29 words
A COMPOSITION OF MATTER COMPRISING AN ARYLENE SULFIDE POLYMER AND AN AMOUNT SUFFICIENT TO REDUCE MELT FLOW OF SAID POLYMER OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF
Claim 3
Dependent Claim
32 words
A composition in accordance with claim 1 wherein said compound is present in an amount within the range of 1 to 5 weight per cent based on the weight of said polymer.
Claim 4
Dependent Claim
11 words
A composition according to claim 1 wherein said compound is tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyloxymethyl)methane.
Claim 5
Dependent Claim
12 words
A composition according to claim 1 wherein said compound is 1,3,5-trimethyl tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene.
Claim 6
Dependent Claim
11 words
A composition according to claim 1 wherein said compound is octadecyl-3-(3'',5''-di-tert-butyl-4''-hydroxyphenyl)propionate.
Claim 7
Dependent Claim
13 words
A composition according to claim 1 wherein said polymer is poly (phenylene sulfide).
Claim 8
Independent Claim
65 words
A method for precuring an arylene sulfide polymer comprising incorporating into said polymer an amount sufficient to reduce melt flow of said polymer of a compound selected from the group consisting of tetrakis-(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyloxymethyl)methane, 1,3,5-trimethyl tris(3, 5-di-tert-butyl-4-hydroxybenzyl) benzene, or octadecyl-3-(3'',5''-di-tert-butyl-4''-hydroxyphenyl)propionate, and thereafter heating said composition to a temperature within the range of 490* to 520*F for a time within the range of 1 to 10 hours.
Claim 9
Independent Claim
65 words
A method for precuring an arylene sulfide polymer comprising incorporating into said polymer an amount sufficient to reduce melt flow of said polymer of a compound selected from the group consisting of tetrakis-(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyloxymethyl)methane, 1,3,5-trimethyl tris(3, 5-di-tert-butyl-4-hydroxybenzyl) benzene, or octadecyl-3-(3'',5''-di-tert-butyl-4''-hydroxyphenyl)propionate, and thereafter heating said composition to a temperature within the range of 490* to 520*F for a time within the range of 1 to 10 hours.
Claim 10
Dependent Claim
15 words
A method according to claim 7 wherein said polymer is a slow curing poly(phenylene sulfide).
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) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |