[EN] METHOD FOR PRODUCING RUBBERS HAVING REDUCED COLD FLOW<br/>[FR] PROCÉDÉ DE PRODUCTION CAOUTCHOUCS PRÉSENTANT UN ÉCOULEMENT À FROID RÉDUIT
申请人:SIBUR HOLDING PUBLIC JOINT STOCK CO
公开号:WO2017116263A1
公开(公告)日:2017-07-06
The invention relates to the production of modified rubbers having reduced cold flow, and rubber mixtures comprising such modified rubbers. A method for preparing rubbers with a reduced cold flow selected from polybutadiene rubber, butyl rubber, and polyisobutylene rubber comprises adding a suspension of layered silicate to a polymerizate formed during preparation of the rubber by polymerization, wherein the silicate is added to the polymerizate in the form of a suspension when a monomer conversion rate reaches a target conversion for said polymerization process. The invention can be used in the industry of synthetic rubbers, and the produced modified rubbers can be used both individually and as a component of composite elastomeric materials used for the production of mechanical rubber goods (MRG) and tires with improved performance characteristics.