公开(公告)号：US11492501B2

公开(公告)日：2022-11-08

申请号：US16070641

申请日：2017-01-11

Applicant: BASF SE

Inventor： Frank Pirrung ,  Matthias Maier ,  Sonja Gesine Gabriel ,  Steffen Onclin

IPC: C09D7/45 ,  C09D17/00 ,  C09B67/46 ,  C09K23/00 ,  C09K23/14 ,  C09K23/16

Abstract: The present invention relates to a dispersant composition comprising: a) at least one oligomeric acid A, which has i) at least one acidic group selected from COOH and PO3H2, and ii) at least one polyoxyalkylene-ether radical of the formula (I): R—(O-A)xO-G-, where A is an C2-C4-alkan-1,2-diyl radical; X is an integer having a number average value in the range from 2 to 20; and R is hydrocarbon radical having from 1 to 30 carbon atoms; G is a chemical bond or a carbonyl group; and b) at least one polyamine B, which is selected from the group consisting of polyvinylamines, poly-C2-C3-alkyleneimines, modified poly-C2-C3-alkyleneimines, melamine compounds, modified melamine compounds, poly-(C2-C4-alkyleneether) amines, polyetheramine polyols, and modified polyetheramine polyols. The invention also relates to aqueous pigment compositions containing a dispersant composition as defined herein, a pigment component, selected from the group consisting of pigments and mixtures of at least one pigment and at least one filler, and an aqueous diluent.