| 摘要 |
The invention relates to a foamable polymeric polyblend of a matrix copolymer of alkenyl aromatic/alkenyl nitrile monomers having dispersed therein (1) a grafted diene rubber being grafted with said monomers and (2) an alkyl half ester of a styrene/maleic anhydride copolymer. The composition is foamed by the thermal decomposition of said half ester. The foamed polyblend has great utility as a structural foam with said composition providing fast molding cycles and fine cell structure. A method for foaming said polyblend is disclosed. |
