Organopolysiloxane rubber stabilized

Claim 1

A PROCESS FOR PRODUCING AN ORGANOPOLYSILOXANE RUBBER COMPOSITION HAVING IMPROVED RESISTANCE TO HEAT-AGING COMPRISING MIXING TOGETHER BY WEIGHT, (1) 0.01 TO 3 PARTS OF A METALLIC ELEMENT IN THE FORM OF A METAL SALE SELECTED FROM THE CLASS CONSISTING OF NICKEL ACETATE, NICKEL CHLORIDE, AND NICKEL OCTOATE, (2) 100 PARTS OF AN ORGANOPOLYSILOXANE, (3) 10 TO 200 PARTS OF FILLER, (4) AN A PEROXIDE CURING CATALYST, AND CURING THE RESULTING COMPOSITION AT TEMEPRATURE IN THE RANGE OF 80*C. TO 200*C., SAID ORGANOPOLYSILOXANE HAVING A VISCOSITY OF AT LEAST 100,000 CENTIPOISES WHEN MEASURED AT 25*C., AND CONSISTING ESSENTIALLY OF CHEMICALLY COMBINED DIORGANOSILOXANE UNITS, MONOORGANOSILOXANE UNITS, AND TRIOGANOSILOXNE UNITS, THE ORGANO RADICALS OF SAID ORGANOPOLYSILOXANE BEING MEMBERS SELECTED FROM THE CLASS CONSISTING OF NONOVALENT HYDROCARBON RADICALS, HALOGENATED MONOVALENT HYDROCARBON RADICALS, AND CYANOALKYL RADICALS, THERE BEING AN AVERAGE OF ABOUT 1.98 TO 2.01 ORGANO RADICALS PER SILICON ATOM.