ELASTOMERS, SYNTHESIS METHODS AND USE THEREOF Russian patent published in 2012 - IPC C08L65/00 C08G61/08 C08G61/06 A63B37/00 B61C1/00 

FIELD: chemistry.

SUBSTANCE: elastomers contain at least two or more cyclic olefin monomers. Said elastomers are obtained as a result of metathesis ring-opening polymerisation in the presence of Grubbs catalyst or a metathesis ring-opening polymerisation catalyst based on ruthenium or osmium. The elastomer interpolymers are characterised by lack of crystallinity, glass transition temperature (T_g) less than 80°C, and number-average molecular weight (M_n) equal to at least 40 kg/mol. To obtain the elastomer interpolymers, characterised by lack of crystallinity, at least two cyclic olefin monomers are used, said monomers being selected from a group consisting of cyclopropene, cyclobutene, benzocyclobutene, cyclopentene, norbornene, norbornadiene, cycloheptene, cyclooctene, 7-oxanorbornene, 7-oxanorbornadiene, cyclodecene, 1,3-cyclooctadiene, 1,5-cyclooctadiene, 1,3-cycloheptadiene, [2.2.1]bicycloheptenes, [2.2.2]bicyclooctenes, cyclohexenyl norbornenes, norbornene dicarboxylic anhydrides, cyclododecene, 1,5,9-cyclododecatriene and mixtures thereof. The elastomer interpolymers are used in rubber mixtures for making covers and cores of golf balls etc.

EFFECT: invention enables to obtain elastomer interpolymers having a suitable balance between dynamic rigidity and hysteresis and satisfactory balance between collision coefficient and compression response.

22 cl, 3 ex