Method for the preparation of light-colored polyesters with the

Details Method for the preparation of light-colored polyesters with the Method for the preparation of light-colored polyesters with the

1983-12-29

1984-11-13

Phynes, Lucille M.

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

Synthetic resins

From carboxylic acid or derivative thereof

528274, 528286, C08G 6334

Patent

active

044827008

ABSTRACT:
A method for the preparation of mixed polyesters with the use of titanium catalysts, wherein addition products prepared from phosphorous acid and monoepoxides are utilized, especially in the esterification stage and the subsequent polycondensation stage of the process. The resulting polyester is free from discoloration.

REFERENCES:
patent: 3441540 (1969-04-01), Muller et al.
patent: 4082724 (1978-04-01), Hewertson
patent: 4101526 (1978-07-01), Buxbaum
patent: 4115371 (1978-09-01), Bier et al.
patent: 4424140 (1984-01-01), Weinberg et al.

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