The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 08, 2022
Filed:
Jan. 11, 2017
Basf SE, Ludwigshafen am Rhein, DE;
Frank Pirrung, Gruenstadt, DE;
Matthias Maier, Sandhausen, DE;
Sonja Gesine Gabriel, Ludwigshafen, DE;
Steffen Onclin, Neustadt, DE;
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 POH, and ii) at least one polyoxyalkylene-ether radical of the formula (I): R—(O-A)O-G-, where A is an C-C-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-C-C-alkyleneimines, modified poly-C-C-alkyleneimines, melamine compounds, modified melamine compounds, poly-(C-C-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.