Method for producing glycidyl methacrylate

Details Method for producing glycidyl methacrylate Method for producing glycidyl methacrylate

1994-04-11

1995-01-10

Evans, Joseph E.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

562598, C07D30128, C07D30132, C07D30312, C07D30338

Patent

active

053808843

ABSTRACT:
Glycidyl methacrylate is produced by the reaction of an alkali metal salt of methacrylic acid with epichlorohydrin in the presence of a quaternary ammonium salt and a polymerization inhibitor in a reaction system where the water content is adjusted to 500 to 2000 ppm. Glycidyl methacrylate is purified by the method of the present invention, wherein the reaction mixture obtained by the above method is washed with a dilute aqueous solution of sodium hydroxide and heated under a reduced pressure to remove unchanged epichlorohydrin by distillation, after which steam is blown into the reaction system under the conditions of reduced pressure and heating to distill away the remaining epichlorohydrin together with glycidyl methacrylate as the first distillate fraction, followed by ceasing the steam blow and carrying out distillation under the conditions of reduced pressure and heating to obtain glycidyl methacrylate as the main distillate fraction.

REFERENCES:
patent: 2537981 (1951-01-01), Edwards
patent: 3075999 (1963-01-01), June et al.
patent: 3661938 (1972-05-01), Heilman
patent: 3975831 (1976-05-01), Heilman
patent: 4755262 (1988-07-01), Matsunaga et al.

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