摘要:
Blends of polyphenylene ether resins and crystalline resins wherein the polyphenylene ether resins have an intrinsic viscosity less than about 0.30 dl/ gm are provided. The blends have increased heat distortion temperatures over compositions containing a polyphenylene ether resin with a greater intrinsic viscosity. The blends may further contain compatibilizing agent, impact modifiers, and reinforcing fillers.
摘要:
Non-halogen flame retarded compositions are provided which comprise a poly(phenylene ether) resin, a poly(arylene sulfide) resin and a siloxane copolymer resin. The compositions can further comprise compatibilizing agents, epoxy resins and reinforcing fillers to provide compositions that exhibit low flash molding characteristics. Articles molded from these compositions are useful in the electrical connector industry.
摘要:
Copolymer compositions useful as impact modifiers are prepared by blending, under reactive conditions, at least one functionalized addition polymer with an excess of at least one functionalized elastomer reactive therewith to form a preblend, and subsequently blending said preblend, under reactive conditions with a further amount of at least one functionalized addition polymer. The preferred addition polymers and elastomers are carbamate-functionalized styrene-acrylonitrile copolymers and maleic anhydride-grafted EPDM elastomers, respectively. The product of the two-step blending operation is a composition comprising a continuous addition polymer phase and elastomer particles dispersed therein, said elastomer particles containing occluded addition polymer. Said composition is stabilized by copolymer formation between the elastomer particles and the addition polymer.
摘要:
The invention relates to a method of enhancing the melt flow characteristics of an impact modified composition of a compatibilized polyphenylene ether-polyamide resin blend. Compositions made by the method of the invention exhibit enhanced physical properties, especially enhanced melt flow and retention of properties.
摘要:
Compositions of polyphenylene ether and olefinic impact modifiers are prepared by the reaction of trimellitic anhydride capped polyphenylene ether with an olefinic impact modifier such as EPDM rubber containing electrophilic substituents such as glycidyl methacrylate.