Modified polyester polyblends and preparation thereof

Details Modified polyester polyblends and preparation thereof Modified polyester polyblends and preparation thereof

1975-11-19

1977-09-20

Levin, Stanford M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 75T, 260 75TN, 2604048, 260860, 560190, C07C 6934, C08K 511, C08K 512

Patent

active

040496112

ABSTRACT:
Polyblends are disclosed comprising terminated polyesters, coupled polyesters derived from partially terminated polyesters and coupled polyesters derived from non-terminated polyesters. The polyblends are prepared by reacting a dicarboxylic acid, a glycol and a monocarboxylic acid or monohydric alcohol under esterification conditions and subsequently treating the reaction mixture with a polyfunctional coupling agent. The polyblends are useful as plasticizers for film-forming vinyl halide polymers.

REFERENCES:
patent: 2606162 (1952-08-01), Coffey et al.
patent: 2844560 (1958-07-01), Greenberg et al.
patent: 3049506 (1962-08-01), Kibler et al.
patent: 3553157 (1971-01-01), Dijkstra et al.

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