US4528346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin composition
Assignee: DIC Corp
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Filing: 1983-09-13
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Granted: 1985-07-09
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Expires: 2003-09-13
Abstract
Abstract A resin composition comprising (A) a polyphenylene sulfide, (B) an epoxy compound, and as an optional component, a reinforcing material, a filler and/or a fire retardant.
Inventors
- 👤 Toshinori Sugie
- 👤 Ryoichi Ishikawa
- 👤 Fumihiro Kobata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:48
CPC Classifications
C; C08; C08L; C08L81/00; C08L81/02; C08L21/00; C08L63/00; C08L65/00; C08L67/00; C08L69/00; C08L71/00; C08L79/00; C08L79/04; C08L79/08; C08L81/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
46 words
A resin composition comprising (A) a polyphenylene sulfide, (B) an epoxy compound, (C) a thermoplastic resin other than (A) and having a melt viscosity of at least 1,000 poises at a temperature in the range of from 230° to 370° C. and (D) optionally a filler.
Claim 2
Dependent Claim
46 words
A resin composition comprising (A) a polyphenylene sulfide, (B) an epoxy compound, (C) a thermoplastic resin other than (A) and having a melt viscosity of at least 1,000 poises at a temperature in the range of from 230° to 370° C. and (D) optionally a filler.
Claim 3
Dependent Claim
19 words
The composition of claim 1 wherein the epoxy compound (B) has a molecular weight of from 100 to 10,000.
Claim 4
Dependent Claim
28 words
The composition of claim 1 which comprises 100 parts by weight of the polyphenylene sulfide (A) and 0.01 to 40 parts by weight of the epoxy compound (B).
Claim 5
Dependent Claim
47 words
The composition of claim 1 wherein the other thermoplastic resin (c) is at least one polymer selected from the group consisting of polyesters, polyamides, polyarylates, polycarbonates, polyphenylene oxides, polyimides, polyamideimides, polyether ether ketones, polysulfones and elastomers selected from the group consisting of polyamide-type elastomers and polyester-type elastomers.
Claim 6
Dependent Claim
50 words
The composition of claim 1 wherein the polyphenylene sulfide (A) has a melt viscosity (V) of from 10 to 100,000 poises at a temperature of 300° C. and a shear speed of 200 (sec) -1 , and the following non-Newtonian coefficient (N) in relation to the melt viscosity (V) 0.8≦N≦1.33+0.000047V.
Claim 7
Dependent Claim
16 words
The composition of claim 1 wherein the epoxy compound (B) is a novolak phenol-type epoxy resin.
Claim 8
Dependent Claim
30 words
The composition of claim 1 which comprises 99 to 1 parts by weight of the polyphenylene sulfide (A) and 1 to 99 parts by weight of the thermoplastic resin (C).
References Cited (Backward Citations)
US4370292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-08 | 1989-01-07 | 1989-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-08 | 1993-01-07 | 1993-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-08 | 1997-01-07 | 1997-07-09 | $7700.00 | Window Closed / Lapsed |