| 摘要 |
Compositions comprise 100 parts by weight of chlorinated polyvinyl chloride having a density in the range 1.53 to 1.59 gms./c.c. at 23 DEG C. and at heat distortion temperature of at least 95 DEG C., and 2 to 10 parts by weight of a homogenously chlorinated polyolefin containing 5 to 50 weight per cent of chlorine. The preferred polyolefin is a high density, linear polyethylene. The compositions may contain conventional stabilizers and may be used in making pipes, conduits and containers which are impact, heat and chemical resistant. The polymers may be blended in solution or emulsion. In examples, blends of chlorinated polyvinyl chloride and chlorinated polyethylene are prepared, and compounded with barium/cadmium salts of higher fatty acids and calcium stearate. Specifications 828,379, 834,824, 893,288 and 949,895 are referred to. |
