Vulcanizable rubber mixtures containing bis-(2,4-organylthio-triazine-6-yl) polysulfides
AssigneeDegussa AG
InventorsGeorg Hellwig, Reinhard Stober, Christoph Klatte, Ulrich Deschler, Siegfried Wolff, Udo Gorl
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Abstract
Bis(2,4-organylthio-s-triazine-6-yl) polysulfides of the general Formula (I) ##STR1## prepared from compounds of the general formula (II) ##STR2## and from an ammonium or alkali polysulfide and the use of such compounds as accelerators in vulcanizable rubber mixtures.
Claims5
A vulcanizable mixture comprising bis(2,4-organylthio-s-triazine-6-yl) polysulfides of the Formula (I) ##STR8## in which R.sup.1, R.sup.2 are identical or different and represent hydrogen, branched or unbranched alkyl with 1-4 carbon atoms, allyl, C.sub.3 -C.sub.8 -cycloalkyl, 2-hydroxyethyl, 3-hydroxypropyl, 2-hydroxypropyl, phenyl, (S).sub.x is a polysulfide chain with 2-10 S atoms (2.ltoreq.x.ltoreq.10) and the individual sulfides are present in such concentrations that the statistical mean x.apprxeq.4, as an accelerator and a vulcanizable rubber selected from the group consisting of natural rubber (NR), isoprene rubber (IR), butadiene rubber (BR), styrenebutadiene rubber (SBR), isobutylene-isoprene rubber (IIR), ethylene-propylene terpolymer (EDPM), nitrile rubber (NBR), halogen-containing rubbers, epoxidized natural rubbers (ENR), and blends of these rubbers, the amount of triazinylpolysulfides being 0.1 to 10 parts per 100 parts of rubber, and with a sulfur content of 0.1 to 10 parts by weight per 100 parts of rubber.
Dependencies are inferred from the claim text.