Multi-arm block copolymer, and pressure sensitive adhesive...

Details Multi-arm block copolymer, and pressure sensitive adhesive... Multi-arm block copolymer, and pressure sensitive adhesive...

C - Chemistry, Metallurgy

09

J

C09J 125/10 (2006.01) C09J 123/18 (2006.01)

Patent

CA 2462706

The present invention provides a novel pressure- sensitive adhesive made from a multi-arm elastomeric block copolymer, and a novel tape made therefrom. The multi-arm block copolymer has the general structure (A'-B)m Y wherein A' and B are polymer segments, Y is a residue of a multifunctional coupling agent and m is the number of arms and is at least 3. A' comprises a random copolymer of a monoalkenylarene and a conjugated diene, wherein the Tg of A' is less than 19°C. B comprises either a homopolymer of a conjugated diene or a polymer of two or more conjugated dienes.

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