Polyetheric copolymers, process for preparing the same,...

Details Polyetheric copolymers, process for preparing the same,... Polyetheric copolymers, process for preparing the same,...

C - Chemistry, Metallurgy

08

G

C08G 65/40 (2006.01) C08G 65/48 (2006.01) C08L 71/00 (2006.01) C08L 71/10 (2006.01) C09D 171/00 (2006.01) C09D 171/10 (2006.01) D01F 6/66 (2006.01) H01C 7/02 (2006.01)

Patent

CA 2005563

The invention relates to a polyetheric copolymer, a polyetheric block copolymer and compositicns of these copolymers containing a benzonitrile recurring unit represented by the general formula (I): Image and a benzophenone recurring unit represented by the general formula (II): Image which copolymer has a molar ratio of the recurring unit of formula (I) to a sum of the recurring units of formulas (I) and (II) in the range from 0.15:1 to 0.40:1, and a melt viscosity (zero shear viscosity) at 400°C in the range from 500 to 100,000 poise. The polyetheric copolymer according to the invention is crystalline and is a macromolecular compound having excellent heat resistance and mechanical strength.

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