Polysulphide mixture, process for its preparation and use of the polysulphide mixture in rubber mixtures

摘要

Polysulfide mixture comprises at least two dibenzoate salts (I). The amount of (I) having pentane-1,5-diyl-bis(sulfanediyl) is at least 80%, preferably 93-99%. Polysulfide mixture comprises at least two dibenzoate salts of formula (I). The amount of (I) having pentane-1,5-diyl-bis(sulfanediyl) is at least 80%, preferably 93-99%. K1 +, K2 +monovalent cation or n-th part of n-valent cation; and m : 0-2. Independent claims are also included for: (1) producing the polysulfide mixture comprising contacting 2-sulfidobenzoate salt of formula (III) with disulfonate salt of formula (K5 +SO 3 --S-[CH 2] 6-S-SO 3 -K5 +) (IV) at -5 to 19[deg] C, preferably 0-10[deg] C; (2) a rubber mixture comprising at least one rubber and the polysulfide mixture; (3) producing the rubber mixture comprising mixing at least one rubber and the polysulfide mixture; (4) producing a vulcanizate, comprising vulcanizing the rubber mixture at melt temperatures of 100-200[deg] C, preferably 130-180[deg] C; (5) the vulcanizate, which is obtained by vulcanization of the rubber mixture; (6) a rubber product, preferably tires comprising at least one rubber vulcanizate; (7) a vehicle comprising the rubber product; (8) an additive composition comprising at least one sulfur containing alkoxysilane, preferably bis(triethoxysilylpropyl) tetrasulfane, bis(triethoxysilyl-propyl) disulfane, 3-(triethoxysilyl)-1-propanethiol, polyether functionalized mercaptosilane or thioester functionalized alkoxysilane and the polysulfide mixture; and (9) reducing the rolling resistance of tires, comprising concentrating the non- or partially cross-linked rubber mixture, which is used as a starting material for at least one part of the tire, and the polysulfide mixture and vulcanizing the mixture. K3 +, K4 +monovalent cation or n-th part of n-valent cation, preferably H +, alkali metal cation, preferably Li +, Na +, K +, alkaline earth metal cation, preferably 1/2Mg 2 +, 1/2Ca 2 +, 1/3 Al 3 +, n-th part of n-valent rare earth metal cation or Zn 2 +; and K5 : monovalent cation or n-th part of n-valent cation, preferably alkali metal cation, preferably Li +, Na +, K +, 1/2 alkaline earth metal cation, preferably 1/2Mg 2 +, 1/2Ca 2 +, 1/3 Al 3 +, n-th part of n-valent rare earth metal cation or Zn 2 +. [Image] [Image].