US4383069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyarylene sulphide compositions
Assignee: GGB Inc
•
Filing: 1981-07-02
•
Granted: 1983-05-10
•
Expires: 2001-07-02
Abstract
Abstract A composition comprising an intimate mixture of a polyarylene sulphide with an aryl ester of an aryl alcohol, the ester being in solid solution in the resin. The preferred mixture comprises polyphenylene sulphide and benzyl benzoate. There is also described a method of curing polyarylene sulphide in which the solid solution of the ester in the resin is formed and this is heated so that the ester evaporates and the resin cures simultaneously.
Inventors
- 👤 Glyndwr J. Davies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:53
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
29 words
A composition of matter is characterised in that it comprises polyarylene sulphide mixed with an aryl ester of an aryl alcohol, the ester being in solution in the resin.
Claim 2
Dependent Claim
29 words
A composition of matter is characterised in that it comprises polyarylene sulphide mixed with an aryl ester of an aryl alcohol, the ester being in solution in the resin.
Claim 3
Dependent Claim
16 words
A composition as claimed in claim 1 characterised in that the polyarylene sulphide is polyphenylene sulphide.
Claim 4
Dependent Claim
18 words
A composition as claimed in claim 1 or claim 2 characterised in that the ester is benzyl benzoate.
Claim 5
Independent Claim
51 words
A method of curing a polyarylene sulphide characterised by mixing polyarylene sulphide with an aryl ester of an aryl alcohol, whereby the polyarylene sulphide is plasticized, subsequently evaporating the ester and at least partly curing the polyarylene sulphide simultaneously to leave the polyarylene sulphide in an at least partly cured state.
Claim 6
Independent Claim
51 words
A method of curing a polyarylene sulphide characterised by mixing polyarylene sulphide with an aryl ester of an aryl alcohol, whereby the polyarylene sulphide is plasticized, subsequently evaporating the ester and at least partly curing the polyarylene sulphide simultaneously to leave the polyarylene sulphide in an at least partly cured state.
Claim 7
Dependent Claim
37 words
A method as claimed in claim 4 characterised by heating the mixture until a single continuous liquid phase is formed and subsequently cooling the mixture to promote precipitation of the resin in the form of fine crystals.
Claim 8
Independent Claim
19 words
A method of curing polyarylene sulphide substantially as herein specifically described in any one of Examples 1 to 5.
Claim 9
Independent Claim
19 words
A method of curing polyarylene sulphide substantially as herein specifically described in any one of Examples 1 to 5.
References Cited (Backward Citations)
US3354129A
Cited
US3725362A
Cited
US3699087A
Cited
GB1513378A
Cited
US4038262A
Cited
JPS53127551A
Cited
JPS5582130A
Cited
JPS5744136A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-09 | 1986-11-08 | 1987-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-09 | 1990-11-08 | 1991-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-09 | 1994-11-08 | 1995-05-10 | $7700.00 | Window Closed / Lapsed |