Rhein Chemie Rheinau Gmbh

Hartmut Schulz

Hans-Joachim Graf

Manfred Schweiger

Thomas Scholl

Harald Kleinknecht

Lothar Steger

Volker Schafer

Volker Sch Afer

Erich Schmidt

Klaus Kn Orr

Hans-Dieter Voss

Hans-Martin Issel

R Udiger Schubart

A vulcanization accelerator combination based on di-(C.sub.6 -C.sub.12 alkyl)dithiophosphates for vulcanizing non-polar rubbers, comprising the following components: (a) a di-(C.sub.6 -C.sub.12 alkyl)dithiophosphate; (b) one or more compounds selected from the group consisting of sulphenamides, thiazoles and carbamates; (c) sulfur and/or a sulfur donor; and (d) at least one additional accelerator compound having a specific chemical structure that is different from the chemical structure of component (a) and any of the compounds used as component (b) in said accelerator combination.

Accelerator combinations

Disclosed herein are stabilized dithiophosphoric acid polysulphides of the formula (I) ##STR1## in which R is a C.sub.1 -C.sub.20 alkyl, cycloalkyl, aryl or aralkyl residue and

Stabilised dithiophosphoric acid polysulphides

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Heidelberg, Germany

Hartmut Schulz