DISPERSING AGENT FOR AQUEOUS PIGMENT PREPARATIONS

摘要

The invention relates to aqueous pigment preparations containing (A) at least one organic and/or inorganic pigment as well as dispersing agent that comprises two or more structural units of formula (I) which are bound to a structural unit Y. In formula (I), a represents an integer from 1 to 100, b represents an integer from 0 to 100, c represents an integer from 1 to 100, units a, b, and c can be arranged statistically or in blocks, R₂ represents an aliphatic, linear or branched hydrocarbon radical with 1 to 30 carbon atoms, A represents hydrogen or an anionic radical of formulas -SO₃M, -SO₂M, -PO₃M₂, -CH₂COOM, or (II), and M represents a hydrogen atom, a cation from the group comprising Na⁺, K⁺, NH₄