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1. (WO1998013409) PROCESS FOR PREPARING ESTERIFICATION PRODUCTS

Pub. No.:    WO/1998/013409    International Application No.:    PCT/US1997/013586
Publication Date: Apr 2, 1998 International Filing Date: Jul 31, 1997
IPC: C08G 63/42
C08G 63/58
Applicants: REICHHOLD CHEMICALS, INC.
NAVA, Hildeberto
Inventors: NAVA, Hildeberto
Title: PROCESS FOR PREPARING ESTERIFICATION PRODUCTS
Abstract:
A process for preparing an esterification product is disclosed. the process comprises providing a polyfunctional organic acid or anhydride, a cyclic organic carbonate compound, and a catalyst selected from the group consisting of an alkali metal, an alcohol derived salt of the alkali metal, and mixtures thereof, and reacting the polyfunctional organic acid or anhydride and the cyclic organic carbonate compound in the presence of the catalyst to form the esterification product. This product can be further reacted with carboxylic acids or their anhydrides and optionally an hydroxy compound to prepare a polyester. Unsaturated polyester resins produced by this process are also described.