US4493920A
Expired / Lapsed
US
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Polymer compositions
Assignee: Lyondell Chemical Technology LP
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Filing: 1983-12-27
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Granted: 1985-01-15
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Expires: 2003-12-27
Abstract
Abstract A polymer composition comprising a thermoplastic polycarbonate and a terpolymer of recurring units of a monovinyl aromatic monomer recurring units of a maleimide monomer and recurring units of an α, β ethylenically unsaturated cyclic anhydride monomer is disclosed.
Inventors
- 👤 Bi Le-Khac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:54
CPC Classifications
C; C08; C08L; C08L35/00; C08L35/06; C08L69/00
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
58 words
A polymer composition comprising in weight percent, from about 1 to about 99 of a thermoplastic polycarbonate based on bis-(hydroxyaryl) alkanes and from about 99 to about 1 of a random terpolymer of recurring units of a monovinyl aromatic monomer, recurring units of a maleimide monomer and recurring units of an α, β ethylenically unsaturated cyclic anhydride monomer.
Claim 2
Dependent Claim
58 words
A polymer composition comprising in weight percent, from about 1 to about 99 of a thermoplastic polycarbonate based on bis-(hydroxyaryl) alkanes and from about 99 to about 1 of a random terpolymer of recurring units of a monovinyl aromatic monomer, recurring units of a maleimide monomer and recurring units of an α, β ethylenically unsaturated cyclic anhydride monomer.
Claim 3
Dependent Claim
45 words
The polymer composition of claim 1 in which said polycarbonate has the following general formula: ##STR3## wherein each R separately represents hydrogen, a C 1 to C 4 alkyl group, chlorine or bromine and wherein X represents a direct C 1 to C 4 alkylene.
Claim 4
Dependent Claim
60 words
The polymer composition of claim 1 in which said maleimide monomer has the following general formula: ##STR4## wherein R represents hydrogen, a C 1 to C 4 alkyl group, a halogen substituted C 1 to C 4 alkyl group, a phenyl group, a C 1 to C 4 alkyl substituted phenyl group or a mono-di or trihalogen substituted phenyl group.
Claim 5
Dependent Claim
14 words
The polymer composition of claim 1 in which said monovinyl aromatic monomer is styrene.
Claim 6
Dependent Claim
13 words
The polymer composition of claim 1 in which said maleimide monomer is N-phenylmaleimide.
Claim 7
Dependent Claim
18 words
The polymer composition of claim 1 in which said α, β ethylenically unsaturated cyclic anhydride is maleic anhydride.
Claim 8
Dependent Claim
15 words
The polymer composition of claim 1 in which said terpolymer is a styrene/N-phenylmaleimide/maleic anhydride terpolymer.
Claim 9
Dependent Claim
27 words
The polymer composition of claim 1 in which said terpolymer has a number average peak molecular weight within the range of from about 50,000 to aobut 300,000.
Claim 10
Dependent Claim
24 words
The polymer composition of claim 1 in which said terpolymer has a number average peak molecular weight of from about 150,000 to about 250,000.
Claim 11
Dependent Claim
16 words
The polymer composition of claim 1 in which said terpolymer is chemically grafted to a rubber.
Claim 12
Dependent Claim
12 words
The polymer composition of claim 1 in which said polycarbonate is 2,2-bis-(4-hydroxyphenyl)-propane.
Claim 13
Dependent Claim
105 words
A polymer alloy comprising in weight percent from about 1 to about 99 of a thermoplastic polycarbonate based on bis-(hydroxyaryl) alkanes and from about 99 to 1 of a random terpolymer of recurring units of a monovinyl aromatic monomer, recurring units of a maleimide and recurring units of an α, β ethylenically unsaturated cyclic anhydride, the polycarbonate and the random terpolymer being fully compatible with one another provided that the terpolymer comprises in weight percent from about 2 to about 24 N-substituted maleimide, from about 2 to about 24 α, β ethylenically unsaturated cyclic anhydride and from about 70 to about 90 monovinyl aromatic monomer.
Claim 14
Dependent Claim
105 words
A polymer alloy comprising in weight percent from about 1 to about 99 of a thermoplastic polycarbonate based on bis-(hydroxyaryl) alkanes and from about 99 to 1 of a random terpolymer of recurring units of a monovinyl aromatic monomer, recurring units of a maleimide and recurring units of an α, β ethylenically unsaturated cyclic anhydride, the polycarbonate and the random terpolymer being fully compatible with one another provided that the terpolymer comprises in weight percent from about 2 to about 24 N-substituted maleimide, from about 2 to about 24 α, β ethylenically unsaturated cyclic anhydride and from about 70 to about 90 monovinyl aromatic monomer.
Claim 15
Dependent Claim
45 words
The polymer alloy of claim 12 in which said polycarbonate has the following general formula: ##STR5## wherein each R separately represents hydrogen, a C 1 to C 4 alkyl group, chlorine or bromine and wherein X represents a direct C 1 to C 4 alkylene.
Claim 16
Dependent Claim
60 words
The polymer alloy of claim 12 in which said maleimide monomer has the following general formula: ##STR6## wherein R represents hydrogen, a C 1 to C 4 alkyl group, a halogen substituted C 1 to C 4 alkyl group, a phenyl group, a C 1 to C 4 alkyl substituted phenyl group or a mono-di or trihalogen substituted phenyl group.
Claim 17
Dependent Claim
14 words
The polymer alloy of claim 12 in which said monovinyl aromatic monomer is styrene.
Claim 18
Dependent Claim
12 words
The polymer alloy of claim 12 in which said maleimide is N-phenylmaleimide.
Claim 19
Dependent Claim
18 words
The polymer alloy of claim 12 in which said α, β ethylenically unsaturated cyclic anhydride is maleic anhydride.
Claim 20
Dependent Claim
15 words
The polymer alloy of claim 12 in which said terpolymer is a styrene/N-phenylmaleimide/maleic anhydride terpolymer.
Claim 21
Dependent Claim
27 words
The polymer alloy of claim 12 in which said terpolymer has a number average peak molecular weight within the range of from about 50,000 to aobut 300,000.
Claim 22
Dependent Claim
24 words
The polymer alloy of claim 12 in which said terpolymer has a number average peak molecular weight of from about 150,000 to about 250,000.
Claim 23
Dependent Claim
16 words
The polymer alloy of claim 12 in which said terpolymer is chemically grafted to a rubber.
Claim 24
Dependent Claim
12 words
The polymer alloy of claim 12 in which said polycarbonate is 2,2-bis-(4-hydroxyphenyl)-propane.
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) | 1988-01-15 | 1988-07-16 | 1989-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-15 | 1992-07-16 | 1993-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-15 | 1996-07-16 | 1997-01-15 | $7700.00 | Window Closed / Lapsed |