Phosphoric acid esters, method of producing them, and use thereo

Details Phosphoric acid esters, method of producing them, and use thereo Phosphoric acid esters, method of producing them, and use thereo

1990-08-06

1992-07-14

Lee, Mary C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus esters

558179, 558180, C07F 909

Patent

active

051304635

ABSTRACT:
Phosphoric acid esters and their salts corresponding to the formula (I): ##STR1## wherein R represents an aliphatic, cycloaliphatic and/or aromatic moiety having no Zerewitinoff hydrogen, containing at least one ether oxygen atom (--O--) and at least one carboxylic acid ester group (--COO--) and/or urethane group (--NHCOO--), and having an average molecular weight M.sub.n of 200 to 10,000, wherein the hydrogen atoms may be partially replaced by halogen atoms, and wherein the ratio of the number of ether oxygen atoms to the number of the carboxylic acid ester groups and/or urethane groups in the molecule (or in every group R) is in the range from 1:20 to 20:1, and n represents 1 or 2. A method for preparing such phosphoric acid esters and salts and the use of such phosphoric acid esters or salts as dispersants or dispersing aids is also disclosed.

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