Process for vulcanizing mixtures of rubbers and product thereof

Claim 1

A PROCESS FOR THE VULCANIZATION OF MIXTURES OF A RUBBERY COPOLYMER OF A MAJOR PORTION OF AN ISO-OLEFIN HAVING FROM 4 TO 7 CARBON ATOMS AND A MINOR PORTION OF A POLY-OLEFINC UNSATURATED HYDROCARBON HAVING FROM 4 TO 14 CARBON ATOMS AND AT LEAST ONE OTHER RUBBERY ELASTOMER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER, HOMOPOLYMERS OF BUTADIENE AND ISOPRENE AND COPOLYMERS OF AT LEAST ONE DIENE SELECTED FROM THE GROUP CONSISTING OF BUTADIENE AND ISOPRENE WITH A MONOMER SELECTED FROM THE GROUP CONSISTING OF ACRYLONITRILE AND STYRENE, WHICH ELASTOMER IS VULCANIZABLE BY THE ACTION OF SULFUR WHICH COMPRISES ADMIXING WITH THE SAID ELASTOMERS A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (A) HALIDES OF METALS OF GROUPS II AND III OF THE PERIODIC TABLE IN AN AMOUNT OF 0.1 TO 10% BY WEIGHT BASED ON THE WEIGHT OF THE MIXTURE OF ELASTOMERS, (B) HALIDES OF HEAVY METALS OTHER THAN THOSE BELONGING TO GROUPS II AND III OF THE PERIODIC TABLE IN AN AMOUNT OF 0.1 TO 10% BY WEIGHT, BASED ON THE WEIGHT OF THE MIXTURE OF ELASTOMERS AND (C) AN ORGANIC HALOGEN DONOR WHICH UNDER THE REACTION CONDITIONS SPLITS OFF A MOLECULE SELECTED FROM THE GROUP CONSISTING OF HALOGEN AND HYDROGEN HALIDE WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF OXIDES AND SALTS OF WEAK ACIDS OF SAID METALS REACTIVE WITH SAID HALOGEN DONOR AT A TEMPERATURE IN THE RANGE FROM 70 TO 250*C. IN AMOUNTS CAPABLE OF FORMING 0.1 TO 10% BY WEIGHT OF METAL HALIDE, BASED ON THE WEIGHT OF THE MIXTURE OF ELASTOMERS, HEATING THE MIXTURE TO A TEMPERATURE IN THE RANGE FROM 70 TO 250*C., ADDING A VULCANIZATION AGENT SELECTED FROM THE GROUP CONSISTING OF (1) SULFUR AND AN ACCELERATOR AND (2) A PHENOL ALDEHYDE CONDENSATE VULCANIZING AGENT AND HEATING THE MIXTURE UNTIL VULCANIZATION OCCURS TO YIELD HOMOGENEOUS VULCANIZATION PRODUCTS.