| 摘要 |
A polyvinyl chloride composition having improved processability, high clarity, and high heat distortion temperature is prepared by blending (I) 99 to 30 parts by weight of polyvinyl chloride or a vinyl chloride copolymer in which at least 80 wt% is vinyl chloride, and (II) 1 to 70 parts by weight of a polymer which is obtained by polymerizing (B) 1 to 30 wt% of a mixture composed of 40 to 80 wt% of styrene monomer and 60 to 20 wt% of alkyl ester of acrylic acid or alkyl ester of methacrylic acid (said alkyl group having 2 to 18 carbon atoms), in the presence of (A) 99 to 70 wt% of methyl methacrylate polymer or a copolymer of more than 75 wt% of methyl methacrylate and less than 25% of styrene monomer, said polymer or copolymer having a specific viscosity ( eta sp, C = 0.4 g/100 ml benzene, 30 DEG C) lower than 0.6. |
