Back to results
US 4,361,666 AGranted
Styrenic polymer additive
AssigneeMonsanto Company
InventorDaniel L. Dufour
Life of this patent
Estimating the term…
Abstract
Styrene/maleic anhydride copolymers and their polyblends can be plasticized using an ester of an aromatic carboxylic acid, which may be halogenated, and a C.sub.10 to C.sub.24 alkyl alcohol having a melting point of at least 50.degree. C.
Claims6
A polymer composition comprising a copolymer of a vinyl aromatic monomer and an ethylenically unsaturated dicarboxylic acid anhydride and minor proportion of a ester having the formula:
- ##STR2## wherein from 1 to 4 of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are --COOR groups in which R is a substituted or unsubstituted alkyl group having from 10 to 24 carbon atoms, and the remainder are selected from hydrogen, alkyl, chlorine and bromine, said ester having a melting point of at least 50.degree. C.
Dependencies are inferred from the claim text.