abstract |
PROCEDURE FOR OBTAINING THERMOPLASTIC MOLDING COMPOSITIONS BASED ON VINYL CHLORIDE POLYMERS. IT CONSISTS OF PREPARING A MIXTURE FORMED OF 25 TO 50 PARTS BY WEIGHT OF A VINYL CHLORIDE OVEN OR COPOLYMER, CONTAINING A MINIMUM OF 50 PERCENT BY WEIGHT OF VINYL CHLORIDE, BY 25 TO 50 PARTS BY WEIGHT OF A MIXTURE OF POLYMERS OF GRAFT, BY ZERO TO 10 PARTS IN WEIGHT OF A THERMOPLASTIC COPOLYMER, OF RESINOS TYPE, OF A COPYLIMUM OF STYRENE-ACRYLONITRILE OR METHACRYLATE, AND BY ZERO TO 30 PARTS IN WEIGHT OF CERTAIN COPIPO PRODUCTION OF FILMS THAT HAVE AN IMPROVED RESISTANCE TO AGING. |