VULCANIZATION SYSTEM, RUBBER MIXTURE CONTAINING SAID SYSTEM AND A PROCESS OF VULCANIZATION

摘要

ABSTRACT OF THE DISCLOSUREA vulcanization system consisting ofa) 20 - 50 parts by weight of sulphur or20 - 50 parts by weight of a sulphurdonor,b) 20 - 50 parts by weight of an acceleratorof the mercapto or sulphenamide group,c) 0 - 10 parts by weight of a conventionalaccelerator additive, andd) 20 - 50 parts by weight of a compoundcorresponding to the general formula(i): (I)whereinR1 to R5 are identicial ox different and denotehydrogen, halogen, nitro, cyano, CF3, CCl3,carboxyl, an alkoxy group containing 1 - 4C-atoms in the alkyl part, or a C1 - C4alkyl group but the groups R1 - R5 must notall be hydrogen,x represents 1 - 4, preferably 2 - 3,y represents 0 or 1, andZ denotes divalent groups such as ? , ?-O ,?, ?-S, ?-O, -?-, C1 - C12 alkylene,C4-C12 cycloalkylene, C6-C10 arylene orC8-C12 arylalkylene, andR6 denotes the group corresponding to theformula:wherein R1 - R5 have the meaning indicated above andmay all be hydrogen;C1-C12 alkyl or a C4-C12 cycloalkylene optionallysubstituted by OH and/or alkoxy with 1 -4 C-atomsin the alkoxy group;benzyl or trichloromethyl, whereby the sum of thecomponents a-d) is 100 can be used for vucanizingnatural or synthetlc rubber.