with sulphur vulkaniserbar mixture of ethylene propylene diene terpolymer and highly unsaturated rubber containing a tetraalkylthiuramsulfid.

摘要

1325064 Tetraalkyl thiuram sulphides SUMITOMO CHEMICAL CO Ltd 14 Sept 1970 [16 Sept 1969] 43783/70 Heading C2C [Also in Division C3] The invention comprises compounds of the formula R 1 R 2 N.CS.S x .CS.NR 3 R 4 , where R 1 -R 4 are alkyl groups having a total of at least 24C, at least one having 12-18C, and x is 1-4. In an example N,NSP1/SP di - n - dodecyl - N,NSP1/SP - diisopropylthiuram disulphide is made from N- isopropyl-N-dodecylamine and CS 2 ; other products are specified, and may be made by methods used for the known lower homologues of these compounds. The compounds are vulcanization accelerators.