Increasing the molecular weight of polyesters and premix...

Details Increasing the molecular weight of polyesters and premix... Increasing the molecular weight of polyesters and premix...

C - Chemistry, Metallurgy

08

G

C08G 63/91 (2006.01) C08J 11/04 (2006.01) C08K 5/5333 (2006.01) C08L 63/00 (2006.01)

Patent

CA 2158859

An increase in the molecular weight of polyester and recycled polyester can be achieved by blending said polyester with a difunctional epoxy resin and a sterically hindered hydroxyphenylalkylphosphonic acid ester or half-ester and heating the blend to above the melting point (glass transition temperature) of the polyester.

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