| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide moldable, thermoplastic multipolymer blends of an acrylic-based copolymer and polyetheresteramide which exhibits good transparency, good chemical resistance, and enhanced dissipation of electrostatic charge. <P>SOLUTION: A substantially transparent, moldable, thermoplastic multipolymer composition comprises: a methyl methacrylate copolymer containing a predominant amount of methyl methacrylate and a minor amount of one or more ethylenically unsaturated monomers; and an effective amount of polyetheresteramide to enhance the electrostatic charge dissipation of the copolymer. The polyetheresteramide has a refractive index within about 0.005 units of the refractive index of the copolymer. The composition, when subjected to injection molding, is such that the injection-molded composition exhibits a haze of not greater than about 25% and a light transmission of at least about 60%. The composition preferably includes an impact modifier which also has a refractive index within about 0.005 units of the refractive index of the copolymer. The composition may also include a minor amount of a polyethylene glycol having a weight average molecular weight of about 2,000 to about 10,000. <P>COPYRIGHT: (C)2012,JPO&INPIT |
