Method of producing block copolymers

C - Chemistry – Metallurgy – 08 – G

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400/2019

C08G 63/08 (2006.01) C08C 19/38 (2006.01) C08F 293/00 (2006.01) C08G 63/00 (2006.01)

Patent

CA 1320606

ABSTRACT OF THE DISCLOSURE Liquid rubber-polyester block copolymers are produced by reacting a liquid rubber-type compound having at least one hydroxyl group in its molecule with molecule .epsilon. -aliphatic lactone in the presence of catalyst.

540915

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