Method of producing a polyether-polyamide block copolymer

Details Method of producing a polyether-polyamide block copolymer Method of producing a polyether-polyamide block copolymer

C - Chemistry, Metallurgy

08

G

400/2016

C08G 69/40 (2006.01)

Patent

CA 1257028

ABSTRACT OF THE DISCLOSURE A method for producing a polyether-polyamide block copolymer is disclosed, comprising copolymerizing, in the presence of an anionic polymerization catalyst, a lactam and a polyether prepolymer represented by the formula: Image wherein R1 is an aliphatic hydrocarbon residual group having 2 to 6 carbon atoms, R2 is an aliphatic hydrocarbon residual group having 3 to 12 carbon atoms, and n is an integer of 4 to 450. The polyester prepolymer is prepared by reacting a polyoxyalkylene having two terminal hydroxy groups with an N- chlorocarbonyl lactam. The polyether-polyamide block according to the invention has high impact strength and is substantially colorless.

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