Preparation of polyesters from polyethers by an...

Details Preparation of polyesters from polyethers by an... Preparation of polyesters from polyethers by an...

C - Chemistry, Metallurgy

08

G

C08G 63/66 (2006.01) C08G 63/668 (2006.01) C08G 63/676 (2006.01) C08J 7/00 (2006.01)

Patent

CA 2103130

Polyesters are prepared by a new ester-insertion reaction of a polyether and a cyclic anhydride in the presence of a Lewis acid catalyst. The process is advantageously used to convert polyether polyols recovered from polyurethanes into curable unsaturated polyester resins.

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