Patent US4679706A successfully refreshed from Google Patents.
US4497928A
Expired / Lapsed
US
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Moldable polyblend containing poly(arylene sulfide)
Assignee: Lyondell Chemical Technology LP
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Filing: 1984-06-25
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Granted: 1985-02-05
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Expires: 2004-06-25
Abstract
Abstract A moldable polyblend comprising a physical mixture of from about 99 to about 1% by weight poly(arylene sulfide) with from about 1 to about 99% by weight of a copolymer containing recurring units of a vinyl aromatic monomer and recurring units of a maleimide monomer is disclosed.
Inventors
- 👤 Barry D. Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:26
CPC Classifications
C; C08; C08L; C08L35/00; C08L81/00; C08L81/02; C08L25/00; C08L25/02; C08L35/06
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
47 words
A moldable polyblend comprising a physical mixture of from about 99 to about 1% by weight of a poly(arylene sulfide) with from about 1 to about 99% by weight of a copolymer containing recurring units of a vinyl aromatic monomer and recurring units of a maleimide monomer.
Claim 2
Dependent Claim
47 words
A moldable polyblend comprising a physical mixture of from about 99 to about 1% by weight of a poly(arylene sulfide) with from about 1 to about 99% by weight of a copolymer containing recurring units of a vinyl aromatic monomer and recurring units of a maleimide monomer.
Claim 3
Dependent Claim
30 words
The polyblend of claim 1 comprising from about 90 to about 99% by weight of said poly(arylene sulfide) and from about 1 to about 10% by weight of said copolymer.
Claim 4
Dependent Claim
34 words
The polyblend of claim 1 in which said copolymer comprises from about 50 to about 60 mole % vinyl aromatic monomer and from about 50 to about 40 mole % of a maleimide monomer.
Claim 5
Dependent Claim
24 words
The polyblend of claim 1 in which said copolymer had a peak molecular weight within the range of from about 50,000 to about 500,000.
Claim 6
Dependent Claim
13 words
The polyblend of claim 1 in which said poly(arylene sulfide) is poly(phenylene sulfide).
Claim 7
Dependent Claim
38 words
The polyblend of claim 1 in which said copolymer said vinyl aromatic monomer is selected from the group consisting of at least one of styrene, p-methyl-styrene, vinyl toluene, t-butylstyrene, α-methylstyrene, monobromostyrene, dibromostyrene, tribromostyrene, monochlorostyrene, dichlorostyrene, trichlorostyrene and, dimethylstyrene.
Claim 8
Dependent Claim
50 words
The polyblend of claim 1 in which said copolymer said maleimide monomer is selected from the group consisting of at least one of maleimide N-methylmaleimide, N-ethylmaleimide, N-propylmaleimide, N-butylmaleimide, N-phenylmaleimide, N-(tolyl)maleimide, N-(2,5-dimethyl)maleimide, N-(2,6-dimethyl)maleimide, N-(2-chlorophenyl)maleimide, N-(3-chlorophenyl)maleimide, N-(4-chlorophenyl)maleimide, N-(2,3-dichlorophenyl) maleimide, N-(2,4-dichlorophenyl)maleimide, N-(2,5-dichlorophenyl)maleimide, N-(2,6-dichlorophenyl)maleimide, N-(2-bromophenylmaleimide, N-(3-bromophenyl)maleimide, N-(4-bromophenyl)maleimide, N-(2,3-dibromophenyl)maleimide, N-(2,4-dibromophenyl) maleimide, N-(2,5-dibromophenyl)maleimide, N-(2,6-dibromophenyl)maleimide and, tribromophenylmaleimide.
Claim 9
Dependent Claim
11 words
The polyblend of claim 1 in which said copolymer is styrene/N-phenylmaleimide.
Claim 10
Independent Claim
62 words
A method of producing a molded polyblend comprising the steps of forming a polyblend comprising a physical mixture of from about 99 to about 1% by weightof a poly(arylene sulfide) with from about 1 to about 99% by weight of a copolymer containing recurring units of a vinyl aromatic monomer and recurring units of a maleimide monomer, and molding the resulting polyblend.
Claim 11
Independent Claim
62 words
A method of producing a molded polyblend comprising the steps of forming a polyblend comprising a physical mixture of from about 99 to about 1% by weightof a poly(arylene sulfide) with from about 1 to about 99% by weight of a copolymer containing recurring units of a vinyl aromatic monomer and recurring units of a maleimide monomer, and molding the resulting polyblend.
Claim 12
Dependent Claim
17 words
The method of claim 9 in which said polyblend is molded in contact with a reinforcing filler.
Claim 13
Dependent Claim
13 words
The method of claim 9 in which said reinforcing filler is glass fibers.
Claim 14
Independent Claim
60 words
A method of reducing the melt viscosity of a poly(arylene sulfide) resin which comprises incorporating into the poly(arylene sulfide) resin a copolymer containing recurring units of a vinyl aromatic monomer and recurring units of a maleimide monomer, the copolymer being present in the poly(arylene sulfide) resin in an amount sufficient to reduce the melt viscosity of the poly(arylene sulfide) resin.
Claim 15
Independent Claim
60 words
A method of reducing the melt viscosity of a poly(arylene sulfide) resin which comprises incorporating into the poly(arylene sulfide) resin a copolymer containing recurring units of a vinyl aromatic monomer and recurring units of a maleimide monomer, the copolymer being present in the poly(arylene sulfide) resin in an amount sufficient to reduce the melt viscosity of the poly(arylene sulfide) resin.
References Cited (Backward Citations)
US4212923A
Cited
JPS5725356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-05 | 1988-08-06 | 1989-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-05 | 1992-08-06 | 1993-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-05 | 1996-08-06 | 1997-02-05 | $7700.00 | Window Closed / Lapsed |