Functionalized radial styrene-isoprene copolymers

Details Functionalized radial styrene-isoprene copolymers Functionalized radial styrene-isoprene copolymers

C - Chemistry, Metallurgy

08

F

C08F 297/04 (2006.01) C08G 81/02 (2006.01) C09J 153/02 (2006.01)

Patent

CA 2125912

"FUNCTIONALIZED RADIAL STYRENE-ISOPRENE COPOLYMERS" A b s t r a c t Adhesive compositions containing a hydroxy- functionalized radial, three-arm copolymer the arms of which contain styrene-isoprene blocks, in which the average molecular weight of the polystyrene blocks is lower than 30,000 and is generally comprised within the range of from 7,000 to 30,000, and the average total molecular weight of said block polymers is comprised within the range of from 120,000 to 250,000. Such a functionalized radial copolymer makes it possible, according to the monomeric composition adopted and by suitably blending with tackifier resins and plasticizer oils, adhesive compositions to be obtained which can be of "hot melt" type or of solvent borne type, displaying good adhesive and cohesive properties and such as to secure an optimal balance between these properties and their processing ability.

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