Shiny Chemical Industrial Co., Ltd.

Neng-Hui Chu

Tzong-Jeng Chu

Peng-Fei Lee

Huang Kuo-Chu

Chin Y Lee

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.

Propylene glycol monomethyl ether butyrates and isomers, and the process

Propylene glycol monomethyl ether propionate compounds are obtained by the esterification of propylene glycol monomethyl ether with propionic acid at an elevated temperature above 80.degree. C. in the presence of acidic catalyst and azeotropic agent. The compounds are rectified for removing acid residue and moisture in order to yield the desirable product having high purity.

Propylene glycol monomethyl ether propionate compounds and the process

A propylene glycol monomethyl ether propionate compound is obtained by the esterification of propylene glycol monomethyl ether with propionic acid at an elevated temperature above 80 .degree.C. in the presence of acidic catalyst and azeotropic agent. This compound is rectified for removing acid residue and moisture in order to yield the desirable product having high purity.

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Kaohsiung Shan, Taiwan

Neng-Hui Chu