Abstract: The present invention relates to vulcanizable rubber mixtures comprising at least the following components: I.) 100 parts by weight of an oil-free rubber matrix consisting of a) 15 to 79 parts by weight, preferably 20 to 70 parts by weight, of at least one solution SBR (S-SBR) (oil-free) having a glass transition temperature (Tg(S-SBR)) between ?70° C. and ?10° C., b) 20 to 75 parts by weight, preferably 25 to 70 parts by weight, of at least one 1,4-cis-polybutadiene (BR) (oil-free) having a glass transition temperature (Tg(BR)) between ?95° C. and ?115° C., c) 1 to 37.5 parts by weight, preferably 5 to 35 parts by weight, of natural rubber (NR) (oil-free) and/or at least one synthetic polyisoprene (IR) having a glass transition temperature (Tg(NR)) between ?50° C. and ?75° C. based on the oil-free natural rubber (NR) or the oil-free, synthetic polyisoprene (IR), II.) at least one hydroxyl-containing microgel based on polybutadiene, III.) at least one hydroxyl-containing, oxidic filler, IV.

Abstract: The present invention relates to a process for producing rubber mixtures, to the rubber mixtures obtainable by the process, to the use of rubber mixtures for producing tires or semi-finished products for tires and crosslinked elastomer molded articles which are obtained by vulcanization of the rubber mixtures produced according to the present invention.

Abstract: The present invention relates to a process for producing rubber mixtures, to the rubber mixtures obtainable by the process, to the use of rubber mixtures for producing tires or semi-finished products for tires and crosslinked elastomer molded articles which are obtained by vulcanization of the rubber mixtures produced according to the present invention.

Abstract: The present invention relates to rubber mixtures consisting of at least one rubber and a specific proportion of a distillation residue from industrial trimethylolpropane production and the use of the rubber mixtures for the production of vulcanisates, especially for the production of highly reinforced, abrasion-resistant mouldings, particularly preferably for the production of tyres exhibiting low rolling resistance and high abrasion resistance.

Abstract: 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 andx is an integer from 2 to 15,containing as stabilizer 1 to 20 wt.% of a carboxylic acid of the general formula R'COOH, in which R' is a C.sub.1 -C.sub.20 alkyl residue, a cycloalkyl residue, an aryl residue or an aralkyl residue, and 1 to 20 wt.% of calcium oxide or zinc oxide.

Abstract: A masticating agent for rubber consists of tallow fatty acid with an addition of 0.1 to 3% by weight (based on the masticating agent) of a 16-membered, metal-containing ring compound.