| abstract |
The invention relates to the synthesis of new block copolymers of a “tree-like” structure used in the manufacture of footwear or adhesives. The synthesis consists of producing living polymers by solution polymerization, copolymerization (block polymerization) of butadiene, isoprene, styrene, L-methyl styrene in the presence of an organolithium compound and the interaction of the obtained lithium-containing polymers with a multifunctional coupling agent (IFAS), which is linear, star-shaped or "tree-like" homo, block or random copolymers of butadiene (isoprene) styrene, isobutylene, in which there are structural units (I) at a molar ratio of active polymer : chlorine in IFAS = 1: 1C 10. Moreover, the interaction with IFAS can be carried out with one active polymer or simultaneously with two or more active polymers of different structures or sequentially with different active polymers. The combination process can be carried out in the presence of n-butyllithium (triisobutylaluminium) with a molar ratio LiR (TIBA): active polymer = 0.1C 2.8: 1. IFAS with units of structure (I) can be used in a mixture with chloroform (tetraethoxysilane) at molar ratio of chloroform (tetraethoxysilane): chlorine in IFAS = 0.015C 2.3: 1. |