Terpolymers with improved heat distortion resistance
AssigneeMonsanto Company
InventorsYoon C. Lee, Quirino A. Trementozzi
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Abstract
Terpolymers of a monoalkenyl aromatic monomer, an unsaturated dicarboxylic acid anhydride and an alkyl methacrylate are found to possess an unexpectedly high heat distortion temperature over a certain range of composition.
Claims9
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.
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.
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.
Dependencies are inferred from the claim text.