Zwitterionic tertiary ammonium dithiocarbamates.

摘要

Zwitterionic tertiary ammonium dithiocarbamates are provided by the reaction of carbon disulfide with a polyamine and can be utilized as either a primary or a secondary accelerator in a sulfur vulcanizable rubber composition. The polyamine contains at least one secondary and at least one tertiary amine with the reaction product containing a tertiary ammonium cation and the carbon disulfide becomes part of a N,N-dialiphatic dithiocarbamate anion which is covalently connected to said tertiary ammonium cation. Such compounds are readily prepared via a direct route by the reaction of the polyamine with carbon disulfide in the presence of a non-hydroxylic solvent or in a gas. The reaction product solid can be readily removed from the solvent as by filtration. When utilized as accelerators, the compounds of the present invention yield improved vulcanization parameters.