Esterification catalysts and processes therefor and therewith

Details Esterification catalysts and processes therefor and therewith Esterification catalysts and processes therefor and therewith

2006-08-22

2006-08-22

Acquah, Samuel A. (Department: 1711)

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

Synthetic resins

From carboxylic acid or derivative thereof

C528S274000, C528S286000, C528S300000, C528S302000, C528S308000, C528S308600, C524S706000, C524S713000, C524S755000, C524S765000, C524S766000, C524S767000, C524S773000, C524S783000, C524S800000, C502S102000, C502S111000, C502S114000, C502S121000, C502S123000, C502S126000

Reissue Patent

active

RE039246

ABSTRACT:
A catalyst composition is disclosed. The composition comprises a titanium compound, a complexing agent, hypophosphorous acid or its metal salt, water and optionally a solvent. The complexing agent can be hydroxycarboxylic acid, alkanolamines, aminocarboxylic acids, or combinations of two or more thereof. The solvent can be water, ethanol, propanol, isopropanol, butanol, ethylene glycol, propylene glycol, isopropylene glycol, butylene glycol, 1-methyl propylene glycol, pentylene glycol, or combinations of two or more thereof. The titanium compound can be combined with a zirconium compound. Also disclosed is a process for using the composition for producing an ester or a polyester. The process comprises contacting a carbonyl compound, in the presence of the compositions, with an alcohol under a condition suitable for esterification, transesterification, polymerization, or combinations of two or more thereof.

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