| 摘要 |
<p>8CN-3565 POLYPHENYLENE ETHER RESIN COMPOSITIONS CONTAINING POLY (4-METHYLSTYRENE) Novel molding compositions are disclosed which comprise a poly(2,6-dimethyl-1,4-phenylene) ether resin or copolymers of this resin and minor amounts of other phenols and a poly(4-methylstyrene) or a rubber modified poly(4-methylstyrene). Also included in the disclosure are methods for preparing the novel compositions, as well as methods for molding the compositions, and the molded products. The products exhibit increased heat distortion temperatures (HDT) in many compositions, melt flow, and resistance to stress cracking, when compared with blends of polyphenylene ether resins and polystyrene. Furthermore, the poly(4-methylstyrene) and the rubber modified poly(4-methylstyrene) have been found to be compatible with polyphenylene ether resins in all proportions.</p> |
