Claims
- 1. A polymeric composition comprising a terpolymer of from 45 to 83% by weight of a monoalkenyl aromatic monomer, from 15 to 35% by weight of an unsaturated dicarboxylic acid anhydride and from 2 to 20% by weight of a C.sub.1 to C.sub.3 alkyl methacrylate ester.
- 2. The terpolymer composition according to claim 1 in which the amount of C.sub.1 to C.sub.3 alkyl methacrylate is from 4 to 10% by weight of the terpolymer.
- 3. The terpolymer composition according to claim 1 in which the C.sub.1 to C.sub.3 alkyl methacrylate is methyl methacrylate.
- 4. A terpolymer composition comprising from 50 to 78% of a monoalkenyl aromatic monomer, from 20 to 30% of an unsaturated dicarboxylic acid anhydride and from 2 to 20% of a C.sub.1 to C.sub.3 alkyl methacrylate, all percentages being by weight.
- 5. The terpolymer composition of claim 4 that includes up to 5% by weight of an effective antioxidant stabilizer.
- 6. The terpolymer composition of claim 5 in which the antioxidant stabilizer comprises 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene.
- 7. A terpolymer composition comprising a terpolymer of from 60 to 76% of styrene, 20 to 30% of maleic anhydride and 4 to 10% of methyl methacrylate, said composition also comprising up to 2% of 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene; all parts being by weight.
- 8. A polyblend comprising:
- A. from 20 to 80% by weight of an ABS polymer consisting essentially of:
- (1) a matrix copolymer; and
- (2) a diene rubber substrate grafted with a superstrate copolymer wherein the rubber substrate provides from 5 to 90% of the weight of the ABS polymer and the matrix polymer and the superstrate polymer are each formed by the polymerization of styrene and acrylonitrile in a weight ratio of from 60:40 to 80:20; and
- B. from 80 to 20% by weight of a terpolymer according to claim 1.
- 9. A polyblend comprising:
- A. from 80 to 20% by weight of an ABS polymer consisting essentially of:
- (1) a matrix copolymer; and
- (2) a diene rubber grafted with a superstrate copolymer wherein the rubber substrate provides from 10 to 50% of the weight of the ABS polymer and the matrix polymer and the superstrate polymer are each formed by the polymerization of styrene and acrylonitrile in a weight ratio of from 60:40 to 80:20; and
- B. from 20 to 80% by weight of a terpolymer composition according to claim 7.
BACKGROUND OF THE INVENTION
This is a continuation-in-part of U.S. Application Ser. No. 927,429 filed July 29, 1978 which is itself a continuation-in-part of Application Ser. No. 865,049, filed Dec. 27, 1977, now U.S. Pat. No. 4,197,376.
US Referenced Citations (4)
Number |
Name |
Date |
Kind |
3336267 |
Zimmerman et al. |
Aug 1967 |
|
3642949 |
Stafford et al. |
Feb 1972 |
|
3919354 |
Moore et al. |
Nov 1975 |
|
4197376 |
Lee et al. |
Apr 1980 |
|
Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
927429 |
Jul 1978 |
|
Parent |
865049 |
Dec 1977 |
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