Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
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.
Chu Neng-Hui
Chu Tzong-Jeng
Kuo-Chu Huang
Lee Chin Y.
Prescott Arthur C.
Shiny Chemical Industrial Co., Ltd.
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