Sulfonsuccinic acid semi-esters, process for their preparation and their use in pigment preparations for aqueous flexo printing pastes

摘要

A sulfosuccinic acid semi-ester of the formula <IMAGE> <IMAGE> wherein A is a group of the formula <IMAGE> 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.