Polyester compositions, shaped articles obtained from them...

Details Polyester compositions, shaped articles obtained from them... Polyester compositions, shaped articles obtained from them...

C - Chemistry, Metallurgy

08

G

402/202, 402/33

C08G 63/66 (2006.01) C07D 311/86 (2006.01) C08G 63/18 (2006.01)

Patent

CA 1136330

ABSTRACT OF THE DISCLOSURE UV stable linear polyesters, e.g. PET, contain in their chain copolymerised bis(hydroxyalkoxy)xanth-9-ones, preferably 3,6-bis-(2-hydroxyethoxy)xanth-9-ones. The polymers are obtained by polymerisation in the presence of a tetrahydroxy benzophenone, preferably the 2,2',4,4'- isomer. The method of polymerising in the presence of dihydric phenols to obtain ethoxyaryloxy polyesters is also described.

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