| abstract |
PURPOSE: To provide a polymer alloy having high breaking strengths, well suited for hoses or belts, by reacting carboxylated polyvinyl chloride, carboxylated nitrile rubber, and (hydro)oxides of Group II or III metals. n CONSTITUTION: Carboxylated polyvinyl chloride (A) such as vinyl chloride/α,β- unsatd. carboxylic acid copolymers, carboxylated nitrile rubber (B) such as conjugated diene/acrylonitrile/α,β-unsatd. carboxylic acid copolymer, and about 0.5W30pts.wt. based on 100pts.wt. total amt. of components A and B, oxide of Group II or III metal (e.g., magnesium or zinc oxide) or hydroxide thereof are mixed and reacted at a temp. above the softening point of the vinyl chloride polymer and about 180°C or under, and, if necessary, reinforcing agents, fillers, plasticizers, etc. are incorporated with the reaction product to yield the intended polymer alloy. n COPYRIGHT: (C)1984,JPO&Japio |