PREPARATION OF DIESTERS

1,199,508. Diesters of sterically hindered carboxylic acids. ESSO RESEARCH & ENG. CO. 11 April, 1968 [1 May, 1967], No. 17425/68. Heading C2C. The invention comprises diesters of the Formula I or II where (R 1 -CO-O-) is a sterically hindered carboxyl group (as defined below) having from 4 to 65...

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Bibliographische Detailangaben
1. Verfasser:	MYRON COOPERSMITH
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES APPARATUS THEREFOR CANDLES CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY DETERGENT COMPOSITIONS DETERGENTS FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS,OILS, OR FATTY ACIDS OBTAINED THEREFROM FATTY ACIDS FROM FATS, OILS OR WAXES FATTY ACIDS THEREFROM GENERAL METHODS OF ORGANIC CHEMISTRY HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES RECOVERY OF GLYCEROL RESIN SOAPS SOAP OR SOAP-MAKING SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS THEIR RELEVANT APPARATUS TRANSPORTING USE OF SINGLE SUBSTANCES AS DETERGENTS
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Beschreibung
Zusammenfassung:	1,199,508. Diesters of sterically hindered carboxylic acids. ESSO RESEARCH & ENG. CO. 11 April, 1968 [1 May, 1967], No. 17425/68. Heading C2C. The invention comprises diesters of the Formula I or II where (R 1 -CO-O-) is a sterically hindered carboxyl group (as defined below) having from 4 to 65 carbon atoms, and X is a divalent radical of the formula where n is 0 to 8 and R 6 , R 7 , R 8 and R 9 are each a hydrogen atom or a C 1-6 alkyl or phenyl radical. By sterically hindered carboxyl radical is meant that branching occurs on the alpha-, beta- or gamma-carbon atoms of the acid. The compounds of Formulµ I and II are prepared by a general process which comprises contacting a glycol monoester of a sterically hindered acid (as defined above) with an esterification catalyst under esterification reaction conditions for a period of time sufficient to convert a portion of the glycol monoester to the diester. The compounds of Formulµ I and II are suitable as emollients for cosmetic purposes.