Polyester compositions, shaped articles obtained from them and p

Details Polyester compositions, shaped articles obtained from them and p Polyester compositions, shaped articles obtained from them and p

1979-05-29

1981-08-18

Schain, Howard E.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528190, C08G 802, C08G 6342

Patent

active

042847567

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

REFERENCES:
patent: 3288755 (1966-11-01), Griehl et al.
patent: 3391110 (1968-07-01), Coleman

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