Bayer Aktiengesellschaft

Ulrich Eholzer

Rudiger Schubart

Ernst Roos

Theo Kempermann

Thomas Scholl

Ulrich Eisele

Hans-Wilhelm Engels

The rubber vulcanizates according to the invention, which are produced using certain carboxyalkyl oligosulfides, are distinguished by improved hysteresis behavior; their mechanical properties remain substantially unaffected.

Rubber vulcanizates having improved hysteresis behavior

Vulcanization acceleration based on melamine derivatives, rubber

Vulcanization system, rubber mixture containing said system and a

A mixture comprising sulphur or a sulphur donor, a mercapto- or sulfenamide vulcanization accelerator, a compound containing a thiophenyl radical and a standard auxiliary accelerator is used as a vulcanization system for natural or synthetic rubber.

Vulcanization system, a rubber mixture containing this vulcanization

One-pot process for producing thiazoline-2-thiones by reacting corresponding aminoethanols with thionylchloride, heating the resulting product and reacting it subsequently with carbon disulphide.

Process for the production of thiazoline-2-thiones

The invention relates to bis (2-benzthiazole-dithio)-N,N'-piperazines of the general formula (I) ##SPC1## a process of their production and the use as a vulcanizing agent for natural or synthetic rubber as well as a process for the vulcanization of a natural or synthetic rubber.

Bis (2-benzthiazole-dithio)-N,N'-piperazines and their use as

The invention relates to bis (2-benzthiazole-dithio)-N,N'-piperazines of the general formula (I) ##SPC1## a process of their production and the use as a vulcanising agent for natural or synthetic rubber as well as a process for the vulcanisation of a natural or synthetic rubber.

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Cologne, Germany

Ulrich Eholzer