Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
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".
Dockner Toni
Lermer Helmut
Nestler Gerhard
Rauh Ulrich
BASF - Aktiengesellschaft
Killos Paul J.
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