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

1992-01-03

1992-09-29

Stoll, Robert L.

Compositions

Preservative agents

Anti-corrosion

252308, 252318, 106493, 106491, 106500, 523351, B01F 1700, C08K 500

Patent

active

051512181

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 urethene group (--NAOO--), 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 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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