Aqueous formulations, their manufacture and use

US10280387B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Marta Reinoso Garcia · Dossenheim, DE
• Markus Hartmann · Neustadt, DE
• Birgit Potthoff-Karl · Weinheim, DE

Key dates

• Filing date: Feb 1, 2016
• Grant date: May 7, 2019
• Expiry date: Feb 1, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D17/045
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Aqueous formulation containing (A) at least one pigment or at least one dyestuff, (B) at least one dispersant selected from (B1) copolymers of at least one ethylenically unsaturated C4-C10-dicarboxylic acid and at least one C4-C20-olefin and their respective alkali metal salts and (B2) aromatic sulfonic acids and their respective alkali metal salts.(C) at least one chelating agent selected from MGDA, GLDA, IDS and citric acid and their respective ammonium and alkali metal salts. (D) water, wherein the concentration of the pigment (A) or dyestuff (A) is in the range of from 5 to 500 ppm, referring to the total aqueous formulation, and wherein the weight ratio of dispersant (B) to the pigment (A) or dyestuff (A), respectively, is in the range of from 1:5 to 3:1.