Sulfonsuccinic acid semi-esters, process for their preparation a

Details Sulfonsuccinic acid semi-esters, process for their preparation a Sulfonsuccinic acid semi-esters, process for their preparation a

1975-02-27

1977-02-22

Marquis, Melvyn I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 59R, 260 59EP, C08R 904

Patent

active

040091422

ABSTRACT:
A sulfosuccinic acid semi-ester of the formula ##STR1## wherein A is a group of the formula ##STR2## B is a hydrogen atom and/or a group of the meaning given for A, X is an ethylene or propylene group, R is a saturated alkyl radical having from 6 to 14 carbon atoms, Me is a hydrogen atom, an alkali metal atom or an equivalent of an alkaline earth metal atom, n is an integer from 2-25 and z is an integer from 1-9.
These sulfosuccinic acid semi-esters are prepared by oxethylating multinuclear alkyl phenols, reacting the oxethylates so obtained with maleic acid anhydride to the maleic acid semi-esters and adding to these semi-esters alkali metal or alkaline earth metal sulfites. Because of their slight tendency to foaming and their poor inherent colour they are excellent dispersing agents for the preparation of highly pigmented pigment preparations of good flow properties which are used in aqueous flexo prints.

REFERENCES:
patent: 2489943 (1949-11-01), Wilson et al.
patent: 3320212 (1967-05-01), Shen et al.
patent: 3546153 (1970-12-01), Mellan et al.

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