Method of preparing polyester carbonates

Details Method of preparing polyester carbonates Method of preparing polyester carbonates

1979-04-30

1981-08-25

Pertilla, Theodore E.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

525439, 525434, 525462, 528182, 528199, 528361, 528372, C08G 6364, C08L 6900

Patent

active

042860830

ABSTRACT:
A novel process is disclosed for the preparation of copolyesters containing both carboxylate and carbonate groups. The process comprises reacting a carbonyl halide with a difunctional carboxylic acid and a dihydroxy compound in a reaction media which comprises water and a water immmiscible solvent in the presence of a tertiary amine.

REFERENCES:
patent: 4001184 (1977-01-01), Scott
patent: 4059565 (1977-11-01), Yoshizaki et al.

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