C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
202/58
C07C 67/54 (2006.01) C07C 69/02 (2006.01) C07C 69/14 (2006.01)
Patent
CA 1217448
ABSTRACT OF THE DISCLOSURE An improved method of stripping unreacted alkylene glycol monoalkyl ethers and unreacted monocarboxylic or halogenated monocarboxylic acids from a mixture containing the monocarboxylic acid ester prepared therefrom by acid catalyzed esterification without any significant loss of the product ester. The method involves the injection of water into the distillate during the stripping and is particularly suitable for the recovery of propylene glycol monomethyl ether and acetic acid from esterification reaction mixtures containing a predominate amount of product propylene glycol monomethyl ether acetate. The process allows for removal and recovery or recycle of the ether and acid and the preparation of a higher purity product ester.
482480
Atlantic Richfield Company
Osler Hoskin & Harcourt Llp
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