Metal phosphinodithioates and bis(phosphinothioyl) disulfides as vulcanization accelerators
Abstract
Abstract WHEREIN EACH R1, R2, R3, R4, AND R5 CAN BE PHENYL LOWER ALKYLPHENYL, HALOPHENYL, NAPHTHYL, HALONAPHTHYL, ARALKYL AND ALKYL CONTAINING 1-20 CARBON ATOMS, OR CYCLOALKYL CONTAINING 5-6L RING CARBON ATOMS; ME IS ZINC, COP PER, CADMIUM ORT IRON; AND N IS THE VALENCE OF THE METAL. THESE CULCANIZATION ACCELERATORS ARE PARTICULARLY SUITABLE FOR RAPID, HIGH-TEMPERATURE CURES BECAUSE "REVERSION" OF TENSILE PROPERTIES USUALLY OCCURING AT HIGH TEMPERATURES, IS HERE CONSIDERABLY REDUCED. R2-P(=S)(-R3)-S-S-P(=S)(-R4)-R5 AND BY BIS(PHOSPHINOTHIOYL) DISULFIDES OF THE FORMULA (R1-P(=S)(-R1)-S)N-ME VULCANIZATION OF COPOLYMERS OF AT LEAST ONE A-OLEFIN WITH A NONCONJUGATED DIENE HAVING NO MORE THAN ONE POLYMERIZABLE DOUBLE BONDS IS ACCELERATED BY METAL PHOSPHINODITHIOATERS OF THE FORMULA
Inventors
- 👤 David Apotheker
Bibliographic Details
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