Process for purifying methyl methacrylate

Details Process for purifying methyl methacrylate Process for purifying methyl methacrylate

1989-06-09

1991-07-23

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

C07C 6748

Patent

active

050345583

ABSTRACT:
A process for purifying methyl methacrylate which comprises treating methyl methacrylate having a purity of 99.5% or more containing a trace of impurities with a sulfonic acid group-containing compounds. According to the present invention, there can be obtained highly purified methyl methacrylate which exhibits an absorbance of 0.02 or less in a range of wavelength of 400-500 nm according to the sulfuric acid color method and is free of even a trace of furan-type compounds.

REFERENCES:
patent: 4625059 (1986-11-01), Shibano et al.

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