Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus esters
Patent
1988-01-29
1989-10-17
Sutto, Anton H.
Organic compounds -- part of the class 532-570 series
Organic compounds
Phosphorus esters
558110, C07F 909
Patent
active
048748838
ABSTRACT:
In the production of monoalkylphosphoric acid esters, at least one fatty alcohol or mixtures of fatty alcohols containing from 8 to 18 carbon atoms and preferably from 12 to 14 carbon atoms in a straight chain is/are reacted with a 0.2 to 2 molar excess of polyphosphoric acid at a temperature of 60.degree. to 130.degree. C.; following an after-reaction time of 120 to 300 minutes at a temperature of 95.degree. to 105.degree. C., the product of this reaction is slowly hydrolyzed at 90.degree. to 100.degree. C. with 0.5 to 1.0 mole water, based on the quantity of phosphorus atoms in the reaction mixture, the hydrolysis product is neutralized to a level of from 40 to 65% and preferably to a level of from 50 to 60%, based onthe acid number, with dilute alkali metal hydroxide, and the two phases formed are separated from one another after a residence time of 30 to 180 minutes at a temperature in the range of from 50.degree. to 95.degree. C.
REFERENCES:
patent: 4670575 (1987-06-01), Kurosaki et al.
Journal of the American Oil Chem., Soc., 55, 839, (1979).
Bischof Klaudia
Ploog Uwe
Uphues Guenter
Drach John E.
Henkel Kommanditgesellschaft auf Aktien
Jaeschke Wayne C.
Millson Jr. Henry E.
Sutto Anton H.
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