US3988286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat curable poly(arylene sulfide) compositions
Assignee: Phillips Petroleum Co
•
Filing: 1974-08-23
•
Granted: 1976-10-26
•
Expires: 1994-08-23
Abstract
Abstract Poly(arylene sulfide) compositions heat curable to products exhibiting improved high temperature properties are provided comprising a minor amount of alkyl-substituted cyclic repeating units and a major amount of cyclic repeating units free of alkyl substituents. The copolymers can be blended with arylene sulfide homopolymers to provide compositions exhibiting improved curing characteristics, as well as being combined with various fillers to provide coating compositions and laminates formed therefrom.
Inventors
- 👤 James T. Edmonds, Jr.
- 👤 Harold Wayne Hill, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:56
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/04; B32B7/12; C; C08; C08G; C08G75/00; C08G75/02; C08G75/0204; C08G75/0209; C08G75/0213; B32B5/00; B32B5/22; B32B5/24; B32B5/26; C08G75/0227; C08G75/0286; C08G75/0295; C08L; C08L81/00; C08L81/02; B32B2262/00; B32B2262/10; B32B2262/101; B32B2262/103; B32B2262/106; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31533; Y10T428/3154
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
99 words
A heat curable poly(arylene sulfide) blend composition exhibiting enhanced cure rates and enhanced thermal stability properties in comparison with poly(arylene sulfides) without alkyl groups which comprises a. an arylene sulfide homopolymer free of alkyl substituents in the polymer chain and b. an arylene sulfide copolymer having in the polymer chain 1-50 mole percent alkyl-substituted monomeric cyclic repeating units and 99-50 mole percent monomeric cyclic repeating units free of alkyl substituents with the further proviso that the amount of said copolymer present in the blend is sufficient to provide 1-40 mole percent alkyl-substituted cyclic repeating units in the total blend.
Claim 2
Dependent Claim
99 words
A heat curable poly(arylene sulfide) blend composition exhibiting enhanced cure rates and enhanced thermal stability properties in comparison with poly(arylene sulfides) without alkyl groups which comprises a. an arylene sulfide homopolymer free of alkyl substituents in the polymer chain and b. an arylene sulfide copolymer having in the polymer chain 1-50 mole percent alkyl-substituted monomeric cyclic repeating units and 99-50 mole percent monomeric cyclic repeating units free of alkyl substituents with the further proviso that the amount of said copolymer present in the blend is sufficient to provide 1-40 mole percent alkyl-substituted cyclic repeating units in the total blend.
Claim 3
Dependent Claim
21 words
A blend according to claim 1 wherein (a) is poly(phenylene sulfide) and (b) is a copolymer formed from p-dichlorobenzene and 2,4-dichlorotoluene.
Claim 4
Dependent Claim
9 words
A thermally cured polymeric composition according to claim 1.
Claim 5
Dependent Claim
16 words
A composition according to claim 1 wherein (b) is a copolymer formed from p-dichlorobenzene and 2,4-dichlorotoluene.
Claim 6
Dependent Claim
16 words
A composition according to claim 1 wherein (b) is a copolymer formed from p-dichlorobenzene and 2,5-dichloro-p-xylene.
Claim 7
Dependent Claim
17 words
A composition according to claim 1 wherein (b) is a copolymer formed from p-dichlorobenzene, 2,6-dichloronaphthalene, and 2,4-dichlorotoluene.
Claim 8
Dependent Claim
17 words
A composition according to claim 1 wherein (b) is a copolymer formed from p-dichlorobenzene, 4,7-dichloroquinoline, and 2,4-dichlorotoluene.
Claim 9
Dependent Claim
17 words
A composition according to claim 1 wherein (b) is a copolymer formed from p-dichlorobenzene, m-dichlorobenzene, and 2,4-dichlorotoluene.
Claim 10
Dependent Claim
26 words
A composition according to claim 1 wherein (b) is a copolymer having in the polymer chain from 2 to 10 mole percent alkyl-substituted cyclic repeating units.
Claim 11
Dependent Claim
22 words
A composition according to claim 1 wherein the blend contains from 50-95 weight percent of and from 50-5 weight percent of (b).
Claim 12
Dependent Claim
38 words
A high strength polymeric composition comprising the polymeric blend of claim 1 reinforced with (c) at least one of carbon, glass or metal wherein the weight ratio of the polymeric blend to reinforcing agent is 1:10 to 10:1.
Claim 13
Dependent Claim
8 words
A thermally cured composition according to claim 11.
Claim 14
Dependent Claim
57 words
A composition exhibiting high flexural modulus and high flexural strength according to claim 11 wherein the polymeric blend is a mixture of poly(phenylene sulfide) and a copolymer formed from p-dichlorobenzene and 2,4-dichlorotoluene and (c) is carbon fibers and said composition has been heated at an elevated temperature and for a period of time sufficient to effect cure.
Claim 15
Dependent Claim
125 words
A process for reducing the cure time of poly(arylene sulfide) resins when heated to an elevated temperature sufficient to effect cure which comprises forming a blend containing an arylene sulfide homopolymer free of alkyl substitutents in the polymer chain and of an arylene sulfide copolymer having in the polymer chain 1-50 mole percent alkyl-substituted monomeric cyclic repeating units and 99-50 mole percent monomeric cyclic repeating units free of alkyl substituents with the further proviso that the amount of said copolymer present is sufficient to provide 1-40 mole percent alkyl-substituted cyclic repeating units in the total polymeric blend, and heating said blend at an elevated temperature and for a period of time sufficient to effect cure to yield a product having improved high temperature physical properties.
Claim 16
Dependent Claim
125 words
A process for reducing the cure time of poly(arylene sulfide) resins when heated to an elevated temperature sufficient to effect cure which comprises forming a blend containing an arylene sulfide homopolymer free of alkyl substitutents in the polymer chain and of an arylene sulfide copolymer having in the polymer chain 1-50 mole percent alkyl-substituted monomeric cyclic repeating units and 99-50 mole percent monomeric cyclic repeating units free of alkyl substituents with the further proviso that the amount of said copolymer present is sufficient to provide 1-40 mole percent alkyl-substituted cyclic repeating units in the total polymeric blend, and heating said blend at an elevated temperature and for a period of time sufficient to effect cure to yield a product having improved high temperature physical properties.
Claim 17
Dependent Claim
30 words
A process according to claim 14 wherein the copolymer is formed from p-dichlorobenzene and 2,4-dichlorotoluene, and said blend is heated at an elevated temperature in the range of 500°-750° F.
Claim 18
Dependent Claim
133 words
A process for reducing the cure time of poly(arylene sulfide) resins when heated to an elevated temperature sufficient to effect cure which comprises forming a blend containing an arylene sulfide homopolymer free of alkyl substituents in the polymer chain and an arylene sulfide copolymeric reaction product having in the polymer chain 1-50 mole percent alkyl-substituted monomeric cyclic repeating units and 99-50 mole percent monomeric cyclic repeating units free of alkyl substituents with the further proviso that the amount of said copolymer present is sufficient to provide 1-25 mole percent alkyl-substituted cyclic repeating units in the total polymer blend, and heating said blend at an elevated temperature in the range of about 500°-750° F and for a period of time sufficient to effect cure to yield a product having improved high temperature physical properties.
Claim 19
Dependent Claim
133 words
A process for reducing the cure time of poly(arylene sulfide) resins when heated to an elevated temperature sufficient to effect cure which comprises forming a blend containing an arylene sulfide homopolymer free of alkyl substituents in the polymer chain and an arylene sulfide copolymeric reaction product having in the polymer chain 1-50 mole percent alkyl-substituted monomeric cyclic repeating units and 99-50 mole percent monomeric cyclic repeating units free of alkyl substituents with the further proviso that the amount of said copolymer present is sufficient to provide 1-25 mole percent alkyl-substituted cyclic repeating units in the total polymer blend, and heating said blend at an elevated temperature in the range of about 500°-750° F and for a period of time sufficient to effect cure to yield a product having improved high temperature physical properties.
Claim 20
Dependent Claim
40 words
A process according to claim 16 wherein the amount of homopolymer present in the blend is in the range of 50-95 weight percent and the amount of copolymer present in the blend is in the range of 50-5 weight percent.
References Cited (Backward Citations)
US3354129A
Cited
US3524835A
Cited
US3396110A
Cited
US3622376A
Cited
US3716609A
Cited
US3699087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-26 | 1980-04-26 | 1980-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-26 | 1984-04-26 | 1984-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-26 | 1988-04-26 | 1988-10-26 | $7700.00 | Window Closed / Lapsed |