Patent US4496690A successfully refreshed from Google Patents.
US4496690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alloys of styrenic resins and polyamides
Assignee: GE Chemicals Inc
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Filing: 1983-06-03
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Granted: 1985-01-29
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Expires: 2003-06-03
Abstract
Abstract Styrenic resins having incorporated therein from 0.5 to 15 pbw of a copolymerizable, ethlenically unsaturated carbonamide such as acrylamide form alloys with polyamides which exhibit improved compatibility, higher heat distortion temperatures and improved Izod impact values over the range of from 5 to 95 wt. % polyamide and 95 to 5 wt. % modified styrenic resin. The alloys may further include unmodified styrenic resins, as well as conventional stabilizers, fillers and the like.
Inventors
- 👤 Thomas S. Grant
- 👤 Charles L. Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:38
CPC Classifications
C; C08; C08L; C08L77/00; C08L51/00; C08L51/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
73 words
A polymer composition comprising from 5 to 95 wt.% of a polyamide and correspondingly from 95 to 5 wt% of a resin selected from the group consisting of copolymers consisting of a styrene, an acrylonitrile and an ethylenically-unsaturated carbonamide, and graft polymers thereof on a rubbery substrate polymer, said resin having incorporated therein from about 0.5 to about 15 parts by weight of said copolymerizable ethylenically-unsaturated carbonamide per hundred parts by weight resin.
Claim 2
Dependent Claim
73 words
A polymer composition comprising from 5 to 95 wt.% of a polyamide and correspondingly from 95 to 5 wt% of a resin selected from the group consisting of copolymers consisting of a styrene, an acrylonitrile and an ethylenically-unsaturated carbonamide, and graft polymers thereof on a rubbery substrate polymer, said resin having incorporated therein from about 0.5 to about 15 parts by weight of said copolymerizable ethylenically-unsaturated carbonamide per hundred parts by weight resin.
Claim 3
Dependent Claim
29 words
The composition of claim 1 wherein said resin is selected from the group consisting of styrene-acrylamide-acrylonitrile copolymers and graft copolymers of styrene, acrylamide and acrylonitrile on a rubbery substrate.
Claim 4
Dependent Claim
10 words
The composition of claim 1 further comprising a styrenic resin.
Claim 5
Dependent Claim
78 words
A composition comprising from 5 to 95 wt% of a polyamide and correspondingly from 95 to 5 wt% of a mixture of a styrenic resin and (b) a resin selected from the group consisting of copolymers of a styrene, acrylamide and an acrylonitrile and graft polymers of a styrene, acrylamide and an acrylonitrile on a rubbery substrate, said resin having from 0.5 to 15 parts by weight of said acrylamide per hundred parts by weight of said resin.
Claim 6
Dependent Claim
78 words
A composition comprising from 5 to 95 wt% of a polyamide and correspondingly from 95 to 5 wt% of a mixture of a styrenic resin and (b) a resin selected from the group consisting of copolymers of a styrene, acrylamide and an acrylonitrile and graft polymers of a styrene, acrylamide and an acrylonitrile on a rubbery substrate, said resin having from 0.5 to 15 parts by weight of said acrylamide per hundred parts by weight of said resin.
Claim 7
Dependent Claim
25 words
The composition of claim 4 wherein said styrenic resin is selected from the group consisting of styrene-acrylonitrile copolymers (SAN), acrylonitrile-butadiene-styrene (ABS) resins and mixtures thereof.
Claim 8
Dependent Claim
28 words
The composition of claim 1 wherein said polymer composition comprises from 25 to 50 wt% of said polyamide and correspondingly from 75 to 50 wt% of said resin.
Claim 9
Dependent Claim
27 words
The composition of claim 4 wherein said composition comprises from 75 to 50 wt% of said polyamide and correspondingly from 75 to 50 wt% of said mixture.
References Cited (Backward Citations)
US4221879A
Cited
US4287315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-29 | 1988-07-30 | 1989-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-29 | 1992-07-30 | 1993-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-29 | 1996-07-30 | 1997-01-29 | $7700.00 | Window Closed / Lapsed |