Process for the preparation of polyesters

Details Process for the preparation of polyesters Process for the preparation of polyesters

1974-11-12

1976-05-04

Bleutge, John C.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 75T, 260485G, 260873, 526225, 526321, C08G 6342

Patent

active

039547167

ABSTRACT:
High molecular weight polyesters are prepared by reacting cyclic acetals or ketals with carboxylic acids or low molecular weight carboxyl terminated polyesters while avoiding the necessity of removing by-products of condensation such as water or alcohols. The polyesters of the invention are useful in the polyisocyanate polyaddition process or as plasticizers for polyvinylchloride and other synthetic resins.

REFERENCES:
patent: 3225014 (1965-12-01), D'Alelio
patent: 3225015 (1965-12-01), D'Alelio
patent: 3644484 (1972-02-01), Witt et al.
patent: 3739017 (1973-06-01), Reilly

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