US4504627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methylmethacrylate/N-phenylmaleimide copolymer-containing polymer alloys
Assignee: Lyondell Chemical Technology LP
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Filing: 1983-09-12
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Granted: 1985-03-12
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Expires: 2003-09-12
Abstract
Abstract Polymer alloys containing copolymers of methylmethacrylate/N-phenylmaleimide are disclosed. In one embodiment the polymer alloy is an alloy of methylmethacrylate/N-phenylmaleimide and styrene/acrylonitrile. In another embodiment, the polymer alloy is an alloy of methylmethacrylate/N-phenylmaleimide and stryene/acrylonitrile/N-phenylmaleimide.
Inventors
- 👤 Barry D. Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:36
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08L33/00; C08L33/04; C08L33/06; C08L33/10; C08L33/12; C08L51/00; C08L51/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
70 words
A polymer alloy comprising a first and a second polymer wherein, (a) the first polymer is a random copolymer consisting essentially of recurring units of methylmethacrylate and recurring units of N-phenylmaleimide; and (b) the second polymer is a random copolymer or terpolymer of recurring units of styrene, recurring units of from about 5 to about 35 weight percent acrylonitrile, and, 0 to 7 weight percent of recurring units of N-phenylmaleimide.
Claim 2
Dependent Claim
70 words
A polymer alloy comprising a first and a second polymer wherein, (a) the first polymer is a random copolymer consisting essentially of recurring units of methylmethacrylate and recurring units of N-phenylmaleimide; and (b) the second polymer is a random copolymer or terpolymer of recurring units of styrene, recurring units of from about 5 to about 35 weight percent acrylonitrile, and, 0 to 7 weight percent of recurring units of N-phenylmaleimide.
Claim 3
Dependent Claim
17 words
The polymer alloy of claim 1 in which said second polymer is a random copolymer of styrene/acrylonitrile.
Claim 4
Dependent Claim
17 words
A polymer alloy of claim 1 in which said second polymer is a random terpolymer of styrene/acrylonitrile/N-phenylmaleimide.
Claim 5
Dependent Claim
36 words
The polymer alloy of claim 1 in which said first polymer is present in an amount within the range of from about 1 to 99 weight percent based on the total weight of the polymer alloy.
Claim 6
Dependent Claim
48 words
The polymer alloy of claim 1 in which said second polymer is present in an amount within the range of from about 1 to 99 weight percent based on the total weight from about 1 to 99 weight percent based on the total weight of the polymer alloy.
Claim 7
Dependent Claim
23 words
The polymer alloy of claim 1, in which in said first polymer the N-phenylmaleimide is from about 1 to about 50 weight percent.
Claim 8
Dependent Claim
23 words
The polymer alloy of claim 1 in which in said first polymer the methylmethacrylate is from about 99 to about 50 weight percent.
Claim 9
Dependent Claim
31 words
The polymer alloy of claim 2 in which said second polymer comprises from about 5 to about 35 weight percent acrylonitrile and from about 95 to about 65 weight percent styrene.
Claim 10
Dependent Claim
40 words
The polymer alloy of claim 3 in which said second polymer comprises from about 65 to about 73 weight percent styrene, from about 20 to about 34 weight percent acrylonitrile and from about 1 to about 7 weight percent N-phenylmaleimide.
Claim 11
Dependent Claim
13 words
The polymer alloy of claim 1 in the form of a molded article.
Claim 12
Independent Claim
88 words
A method of producing a molded article which comprises: (a) preparing a polymer alloy comprising a first and a second polymer wherein, (i) the first polymer is a random copolymer consisting essentially of recurring units of methylmethacrylate and recurring units of N-phenylmaleimide; and (ii) the second polymer is a random copolymer or terpolymer of recurring units of styrene, recurring units of from about 5 to about 35 weight percent acrylonitrile, and, 0 to 7 weight percent of recurring units of N-phenylmaleimide; and (b) molding the resulting polymer alloy.
Claim 13
Independent Claim
88 words
A method of producing a molded article which comprises: (a) preparing a polymer alloy comprising a first and a second polymer wherein, (i) the first polymer is a random copolymer consisting essentially of recurring units of methylmethacrylate and recurring units of N-phenylmaleimide; and (ii) the second polymer is a random copolymer or terpolymer of recurring units of styrene, recurring units of from about 5 to about 35 weight percent acrylonitrile, and, 0 to 7 weight percent of recurring units of N-phenylmaleimide; and (b) molding the resulting polymer alloy.
References Cited (Backward Citations)
US3676404A
Cited
US4381373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-11 | 1988-09-10 | 1989-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-11 | 1992-09-10 | 1993-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-11 | 1996-09-10 | 1997-03-12 | $7700.00 | Window Closed / Lapsed |