RUBBER MIXTURE Russian patent published in 2008 - IPC C08L27/16 C08K13/02 C08K3/04 C08K3/22 C08K5/04 C08K5/10 C08K5/31 

FIELD: chemistry; rubber industry.

SUBSTANCE: invention pertains to rubber mixtures based on fluoroprene, used for making rubber goods, which can work in conditions affected by fuel and used in the motor-car industry. The rubber mixture consists of a vinylidene fluoride terpolymer and tetrafluoroethylene, magnesium oxide, calcium hydroxide, technical carbon T-900, di-(4hydroxyphenyl)dimethylmethane, pentaerythritol tetrastearate, dibutyl sebacate and a catalyst. The catalyst used is in the form of guanidine quaternary salts, and more specifically, guanidine bromide or chloride. The catalyst is a compound obtained from interaction of phenyl-bi-guanidine hydrochloride or hydrobromide with lower bromide or ethyl chloride, with molar ratio of 1:7 in the presence of a base. The catalyst is taken in percentage mass ratios of 0.5-0.7% at 100% mass of terpolymer.

EFFECT: increased rate of vulcanisation of rubber mixtures; wide range of catalysts for fluoroprene.

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