Hydroxyacetonitrile diphosphonic acid, a process for its product

Details Hydroxyacetonitrile diphosphonic acid, a process for its product Hydroxyacetonitrile diphosphonic acid, a process for its product

1988-07-22

1990-03-13

Brust, Joseph Paul

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

558312, 558315, 558386, C07C12000, C07C12136, C07C12134, C02F 514

Patent

active

049081381

ABSTRACT:
Hydroxyacetonitrile diphosphonic acid corresponding to the following general formula ##STR1## in which M represents H or a cation of a base, and salts thereof; to a process for their preparation comprising reacting 3-R.sup.1 -3-oxo-1-aminopropane-1,1-diphosphonic acids corresponding to the following general formula ##STR2## in which R.sup.1 is a tertiary substituted alkyl group, an optionally substituted cycloalkyl group or an optionally substituted aryl or heteroaryl radical, with nitrous acid, the secondary product R.sup.1 -COOH and unreacted starting material are separated off from the reaction mixture and the hydroxyacetonitrile diphosphonic acid is obtained in the form of a salt by addition of a base; and to the use of the above compounds as complexing agents and as thresholders.

REFERENCES:
patent: 2026078 (1935-12-01), Walker
patent: 3488419 (1970-01-01), McCune et al.
patent: 3617576 (1971-11-01), Kerst
patent: 3629326 (1971-12-01), Frank et al.
patent: 3846420 (1974-11-01), Wollmann et al.
patent: 3962432 (1976-06-01), Schmidt-Duenker
patent: 4054598 (1977-10-01), Blum et al.
patent: 4134969 (1979-01-01), Schmidt-Duenker
patent: 4239695 (1980-12-01), Chai et al.
patent: 4370280 (1983-01-01), Oediger et al.
patent: 4440646 (1984-04-01), Budnick
patent: 4645762 (1987-02-01), Biere et al.
Zeitschrift Fur Naturforschung B (Chemical Sciences) vol. 43, No. 1, Jan. 1988, pp. 75-81.

Affiliated with

Also associated with

Rating

Hydroxyacetonitrile diphosphonic acid, a process for its product does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydroxyacetonitrile diphosphonic acid, a process for its product, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydroxyacetonitrile diphosphonic acid, a process for its product will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-49802