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Patent US4562231A successfully refreshed from Google Patents.
US4562231A
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Polyether sulfone resin containing molding composition and method
Assignee: Lyondell Chemical Technology LP
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Filing: 1984-09-06
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Granted: 1985-12-31
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Expires: 2004-09-06
Abstract
Abstract Moldable polymer compositions comprising a polyether sulfone resin and a copolymer containing recurring units of a vinyl aromatic monomer and recurring units of a maleimide monomer are disclosed.
Inventors
- 👤 Barry D. Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:40
CPC Classifications
C; C08; C08L; C08L35/00; C08L35/06; C08L81/00; C08L81/06
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
78 words
A moldable polymer composition comprising from about 99 to about 1% by weight of a polyether sulfone resin and from about 1 to about 99% by weight of a copolymer containing from about 50 to about 60 mole % recurring units of a vinyl aromatic monomer and from about 40 to about 50 mole % recurring units of a maleimide monomer, said copolymer having a peak molecular weight within the range of from about 50,000 to about 500,000.
Claim 2
Dependent Claim
78 words
A moldable polymer composition comprising from about 99 to about 1% by weight of a polyether sulfone resin and from about 1 to about 99% by weight of a copolymer containing from about 50 to about 60 mole % recurring units of a vinyl aromatic monomer and from about 40 to about 50 mole % recurring units of a maleimide monomer, said copolymer having a peak molecular weight within the range of from about 50,000 to about 500,000.
Claim 3
Dependent Claim
16 words
The polymer composition of claim 1 in which said maleimide monomer is an N-substituted maleimide monomer.
Claim 4
Dependent Claim
13 words
The polymer composition of claim 2 in which said maleimide monomer is N-phenylmaleimide.
Claim 5
Dependent Claim
29 words
The polymer composition of claim 1 in which said polyether sulfone resin is selected from the group consisting of poly(diphenyl ether)sulfone, poly(diphenyl sulfone-diphenyl ether sulfone)copolymer and poly(diphenyl sulfone-bisphenol A)copolymer.
Claim 6
Dependent Claim
12 words
The polymer composition of claim 1 in which said copolymer is styrene/N-phenylmaleimide.
Claim 7
Independent Claim
92 words
A method of producing a molded polymer composition which comprises forming a blend comprising from about 99 to about 1% by weight of a polyether sulfone resin and from about 1 to about 99% by weight of a copolymer containing from about 50 to about 60 mole % recurring units of a vinyl aromatic monomer and from about 40 to about 50 mole % recurring units of a maleimide monomer said copolymer having a peak molecular weight within the range of from about 50,000 to about 500,000, and molding the resulting blend.
Claim 8
Independent Claim
92 words
A method of producing a molded polymer composition which comprises forming a blend comprising from about 99 to about 1% by weight of a polyether sulfone resin and from about 1 to about 99% by weight of a copolymer containing from about 50 to about 60 mole % recurring units of a vinyl aromatic monomer and from about 40 to about 50 mole % recurring units of a maleimide monomer said copolymer having a peak molecular weight within the range of from about 50,000 to about 500,000, and molding the resulting blend.
Claim 9
Dependent Claim
15 words
The method of claim 6 in which said maleimide monomer is an N-substituted maleimide monomer.
Claim 10
Dependent Claim
12 words
The method of claim 6 in which said maleimide monomer is N-phenylmaleimide.
Claim 11
Dependent Claim
27 words
The method of claim 6 in which said polyether sulfone resin is selected from the group consisting of poly(diphenyl ether)sulfone, poly(diphenyl-sulfone-diphenyl ether sulfone)copolymer and poly(diphenyl sulfone-Bisphenol A)copolymer.
Claim 12
Dependent Claim
12 words
The method of claim 6 in which said copolymer is styrene/N-phenylmaleimide copolymer.
Claim 13
Independent Claim
97 words
A method of reducing the melt viscosity of a polyether sulfone resin upon molding which comprises incorporating into the polyether sulfone resin a copolymer containing from about 50 to about 60 mole % recurring units of a vinyl aromatic monomer and from about 40 to about 50 mole % recurring units of a maleimide monomer, said copolymer having a peak molecular weight within the range of from about 50,000 to about 500,000, the copolymer being incorporated in the polyether sulfone resin in an amount sufficient to reduce the melt viscosity of the polyether sulfone resin upon molding.
Claim 14
Independent Claim
97 words
A method of reducing the melt viscosity of a polyether sulfone resin upon molding which comprises incorporating into the polyether sulfone resin a copolymer containing from about 50 to about 60 mole % recurring units of a vinyl aromatic monomer and from about 40 to about 50 mole % recurring units of a maleimide monomer, said copolymer having a peak molecular weight within the range of from about 50,000 to about 500,000, the copolymer being incorporated in the polyether sulfone resin in an amount sufficient to reduce the melt viscosity of the polyether sulfone resin upon molding.
Claim 15
Dependent Claim
15 words
The method of claim 11 in which said maleimide monomer is an N-substituted maleimide monomer.
Claim 16
Dependent Claim
12 words
The method of claim 11 in which said maleimide monomer is N-phenylmaleimide.
Claim 17
Dependent Claim
11 words
The method of claim 11 in which said copolymer is styrene/N-phenylmaleimide.
Claim 18
Dependent Claim
27 words
The method of claim 11 in which said polyether sulfone resin is selected from the group consisting of poly(diphenyl ether)sulfone, poly(diphenyl-sulfone-diphenyl ether sulfone)copolymer and poly(diphenyl sulfone-Bisphenol A)copolymer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-30 | 1989-07-01 | 1989-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-30 | 1993-07-01 | 1993-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-30 | 1997-07-01 | 1997-12-31 | $7700.00 | Window Closed / Lapsed |