Polyester containing residues of a 1-hydroxy-3-6-bis(hydroxyalko

Details Polyester containing residues of a 1-hydroxy-3-6-bis(hydroxyalko Polyester containing residues of a 1-hydroxy-3-6-bis(hydroxyalko

1982-09-27

1984-06-26

Lee, Lester L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528125, 528126, 528176, C08G 6318, C08G 6366

Patent

active

044567464

ABSTRACT:
A new linear polyester contains in its chain the residues of a hydroxy-bis(hydroxyalkoxy)xanth-9-one e.g. polyethylene terephthalate containing such residues which act as a UV stabilizer. Processes for the preparation of the polymers include the reaction of a dibasic acid, glycol and 1,3,6-trihydroxyxanthone whereby only two of the xanthone hydroxyl groups take part in the polyester-forming reaction.

REFERENCES:
patent: 3385910 (1968-05-01), Tocker
patent: 3577211 (1971-05-01), Wilson
patent: 4188476 (1980-02-01), Irwin
patent: 4224433 (1980-09-01), Calundann et al.
patent: 4341688 (1982-07-01), Charbonneau et al.

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