Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1980-08-20
1982-07-06
Breitenstein, G. T.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
26050112, 260507R, 544335, C07C10172
Patent
active
043384609
ABSTRACT:
A process for preparing in high yield an isolable orthohydroxydiaminodicarboxylic acid which is useful as a metal chelating agent. The process comprises reacting a phenol (or mixture of phenols), a diaminodicarboxylic acid (or acid source), and a formaldehyde source in a medium having an acidic pH.
REFERENCES:
patent: Re23904 (1954-12-01), Bersworth
patent: 2624757 (1953-01-01), Bersworth
patent: 2717263 (1955-09-01), McKinney et al.
patent: 2763680 (1956-09-01), Sailmann
patent: 2967196 (1961-01-01), Kroll et al.
patent: 3394174 (1968-07-01), Feigin
patent: 3394184 (1968-07-01), Bailey
patent: 3632637 (1972-01-01), Martell
patent: 3742002 (1973-06-01), Ohlson et al.
patent: 3988367 (1976-10-01), Gaudette et al.
patent: 4069249 (1978-01-01), Gaudette et al.
patent: 4152345 (1979-05-01), Gaudette et al.
patent: 4225502 (1980-09-01), Gaudette et al.
Jakublee et al., Amino Acids, Peptides and Proteins, John Wiley & Sons, pp. 23, 25, (1977).
Greenstein et al., Chemistry of the Amino Acids, John Wiley & Sons, p. 478, (1961).
Morrison et al., Organic Chemistry, 2nd Edition, Allyn and Bacon, p. 1103, (1966).
Chaberek et al., Organic Sequestering Agents, John Wiley & Sons, p. 63, (1959).
Gaudette Roger R.
Ohlson John L.
Scanlon Patricia M.
Bleeker Ronald A.
Breitenstein G. T.
Marion Donald G.
W. R. Grace & Co.
LandOfFree
Process for preparing chelating agents 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 preparing chelating agents, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing chelating agents will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2169706