Method of purifying crude glycidyl (meth)acrylate

Details Method of purifying crude glycidyl (meth)acrylate Method of purifying crude glycidyl (meth)acrylate

1991-11-15

1993-02-02

Manoharan, Virginia

Distillation: processes, separatory

With chemical reaction

Including step of adding catalyst or reacting material

203 49, 203DIG6, 203DIG21, 549202, 549515, B01D 334, C07D30136

Patent

active

051835398

ABSTRACT:
A method of purifying a crude glycidyl (meth)acrylate, by (1) subjecting a crude glycidyl (meth)acrylate containing epichlorohydrin and other chlorine compounds as impurities to a stripping treatment with a mixed gas containing oxygen gas in the presence of a quaternary ammonium salt, and then (2) distilling the treated product to obtain a purified glycidyl (meth)acrylate.

REFERENCES:
patent: 4199410 (1980-04-01), Ohrui et al.
patent: 4210493 (1980-07-01), Stewart et al.
patent: 4260821 (1981-04-01), Benjamin
patent: 4755262 (1988-07-01), Matsunaga et al.
English Abstract of Japanese Laid-Open Publication No. 255,273/1988.
English Abstract of Japanese Laid-Open Publication No. 124,777/1983.
English Abstract of Japanese Laid-Open Publication No. 42,075/1982.
Sakai et al., Chemical Abstracts 88:50369q (1978).

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