Separation of a diester of (meth)acrylic acid with a C.sub.4 -C.

Details Separation of a diester of (meth)acrylic acid with a C.sub.4 -C. Separation of a diester of (meth)acrylic acid with a C.sub.4 -C.

1995-10-10

1997-09-02

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

C07C 6748

Patent

active

056634218

ABSTRACT:
A diester of (meth)acrylic acid with a C.sub.4 -C.sub.6 -alkanediol is separated from a mixture which essentially consists of the C.sub.4 -C.sub.6 -alkanediol, the monoester of (meth)acrylic acid with the C.sub.4 -C.sub.6 -alkanediol and the diester of (meth)acrylic acid with the C.sub.4 -C.sub.6 -alkanediol by extraction with an organic solvent in the presence of water, by a process in which the diester-containing mixture is added continuously in the middle section of an extraction column and in addition water and the organic extracting agent are passed continuously countercurrent in the extraction column.

REFERENCES:
Ullmann's Encyclopedia, vol. 19, No. 4, pp. 10-30, 1980, "Polyacryl-und Polymethacryl-Verbindungen".
Roempp Chemie Lexicon, pp. 528-529, 1989, "Butandiole".
Ullmann's Encyclopedia, vol. 19, pp.9-14, 1980, "Parkinsonism Treatment".
Technische Information, Edition 1331 d, 2 pages, Jun. 1995, "Butandiolmonoacrylat".

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