Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1994-10-14
1995-11-14
Dees, Jose G.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
562583, C07C 5143
Patent
active
054668751
ABSTRACT:
A process for the purification and recovery of 2,2'-oxydisuccinate moieities from a reaction mixture containing maleate, malate, fumarate, and alkaline earth metal is disclosed which reduces the pH to about 3.8 to 4.2 with sulfuric acid and then produces the calcium salt of the 2,2'-oxydisuccinate by heating and precipitation.
REFERENCES:
patent: 3128287 (1964-04-01), Berg
patent: 3635830 (1972-01-01), Lamberti et al.
patent: 3914297 (1975-10-01), Lamberti et al.
patent: 4188493 (1980-02-01), Walter
patent: 4798907 (1989-01-01), MacBrair, Jr. et al.
patent: 4959496 (1990-09-01), Crutchfield et al.
patent: 5030751 (1991-07-01), Lamberti et al.
patent: 5068420 (1991-11-01), Kreczmer
patent: 5068421 (1991-11-01), Horng
patent: 5104568 (1992-04-01), Shaw, Jr. et al.
patent: 5171886 (1992-12-01), Schultz
patent: 5254281 (1993-10-01), Pichardo et al.
patent: 5296588 (1994-03-01), Au et al.
patent: 5336765 (1994-08-01), Au et al.
Abstract of JP 4112849. (1992).
Abstract of JP 4112850. (1992).
Defense Publication No. T. 101,805--published May 4, 1982.
Gutierrez Eddie N.
Wu Shang-Ren
Dees Jos,e G.
Farrell James J.
Frazier Barbara S.
Lever Brothers Company Division of Conopco, Inc.
LandOfFree
Process for the purification of alkaline earth metal salts of 2, does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the purification of alkaline earth metal salts of 2,, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the purification of alkaline earth metal salts of 2, will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1222460