Block copolymer, method of making the same, diamine...

Details Block copolymer, method of making the same, diamine... Block copolymer, method of making the same, diamine...

C - Chemistry, Metallurgy

08

G

402/21

C08G 77/26 (2006.01) C08G 18/61 (2006.01) C08G 77/06 (2006.01) C08G 77/458 (2006.01)

Patent

CA 1340655

Block copolymers having a repeating unit comprised of polysiloxane and urea segments are prepared by copolymerizing certain diaminopolysiloxanes with diisocyanates. The invention also provides novel diaminopolysiloxanes useful as precursors in the preparation of the block copolymers and a method of making such diaminopolysiloxanes. Pressure sensitive adhesive compositions comprising the block copolymer are also provided as are sheet. materials coated with the same.

617075

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