ADHESIVE COMPOSITION, STAR-SHAPED STYRENE-ISOPRENE BLOCK COPOLYMER SUBSTITUTED BY FUNCTIONAL GROUPS, AND METHOD OF PREPARING THEREOF Russian patent published in 1999 - IPC

FIELD: chemistry of polymers. SUBSTANCE: present invention describes adhesive composition based on star-shaped styrene-isoprene block copolymers substituted by functional groups. Adhesive composition comprises (a) from 20 to 50 wt % star-shaped three diagonal block copolymer substituted by functional groups of general formula (1): (S-I)₃Si(OR)_nOH (I) wherein each of diagonals (S-I) is styrene-isoprene block copolymer in which S is polystyrene block; I is polyisoprene block; R is combination agent residue corresponding to alkylene or hydroxyalkylene group having from 2 to 10 carbon atoms, and n is 0 or 1; (b) from 30 to 70 wt % at least one resin which imparts adhesiveness; (c) from 1 to 30 wt % at least one plasticizing oil. EFFECT: readily available compositions which show all desired rheological and adhesive characteristics and have satisfactory adhesion level. 20 cl, 3 ex, 1 tbl