Propylene glycol monomethyl ether butyrates and isomers, and the

Details Propylene glycol monomethyl ether butyrates and isomers, and the Propylene glycol monomethyl ether butyrates and isomers, and the

1994-04-29

1995-06-20

Prescott, Arthur C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C07C 6728, C07C 6700

Patent

active

054262143

ABSTRACT:
Propylene glycol monomethyl ether butyrates and their isomers are obtained by the esterification of propylene glycol monomethyl ether or its isomer with iso-butyric or n-butyric acid at an elevated temperature above 80.degree. C. in the presence of acidic catalyst and azeotropic agent. These compounds are rectified for removing acid residue and moisture in order to yield the desirable product having high purity.

REFERENCES:
patent: 5087659 (1992-02-01), Fujisawa
patent: 5247029 (1993-09-01), Nishida et al.
patent: 5283124 (1994-02-01), Fujibayashi et al.

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