Sulfur-curable compositions containing poly-unsaturated compounds as curing promoters

Claim 1

A PROCESS FOR PREPARING A SULFUR-CURED, FILLER-LOADED ELASTOMERIC COMPOSITION WHICH COMPRISES MIXING (I) A NORMALLY SOLID ELASTOMERIC COPOLYMER SELECTED FROM THE GROUP CONSISTING OF (A) A COPOLYMER OF AT LEAST ONE AMONOOLEFIN OF THE FORMULA R-C=CH2 WHERE R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND C1-C16 ALKYL RADICALS AND AT LEAST ONE NON-CONJUGATED HYDROCARBON DIENE OF FROM 5 TO 22 CARBON ATOMS, SAID COPOLYMER HAVING UP TO ABOUT 2 GRAM-MOLES OF CARBON-TO-CARBON DOUBLE BONDS PER KILOGRAM, AND (B) A COPOLYMER OF AN ISOOLEFIN AND A CONJUGATED DIENE, SAID ISOOLEFIN AND DIENE HAVING FROM 4 TO 14 CARBON ATOMS, AND SAID COPOLYMER HAVING AN IODINE NUMBER OF FROM 1 TO ABOUT 50; (II) ABOUT 20 TO 300 PARTS OF A FILLER COMPOUND PER 100 PARTS OF COPOLYMER; (III) A MONOMERIC CURING PROMOTER COMPOUND SELECTED FROM THE GROUP CONSISTING OF DI-ALLYL ESTERS OF UNSATURATED DICRBOXYLIC ACIDS AND N-ALLYL SUBSTITUTED AMIDES, SAID PROMOTER COMPOUND HAVING AT LEAST 3 SULFURREACTABLE CARBON-TO-CARBON DOUBLE BONDS PER MOLECULE AND BEING PRESENT IN AN AMOUNT TO GIVE ABOUT 0.05 TO 1.9 GRAM-MOLES OF CARBON-CARBON DOUBLE BONDS IN THE PROMOTER FOR EVERY GRAM-MOLE OF CARBON-CARBON DOUBLE BONDS IN SAID COPOLYMER; AND (IV) A SULFUR-CURING SYSTEM IN AMOUNTS CONTAINING ABOUT 0.2 TO 3.5 PARTS OF SULFUR PER 10 PARTS BY WEIGHT OF SAID COPOLYMER TO REACT WITH SAID COPOLYMER AND UP TO 40% ADDITIONAL SULFUR TO REACT WITH SAID PROMOTER; AND HETING THE MIXTURE OF EFFECT A CURE.