Aqueous formulations with good storage capabilities

US10961485B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Arend Jouke Kingma · Saint Paul, US
• Diana Neumann · Speyer, DE
• Henning Urch · Ludwigshafen, DE

Key dates

• Filing date: Nov 2, 2016
• Grant date: Mar 30, 2021
• Expiry date: Apr 4, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D7/36
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Aqueous formulations comprising (A) at least one organic complexing agent selected from (A1) alkali metal salts of aminopolycarboxylic acids and (A2) polymers bearing at least two —CH2—N(CH2COOH)-units per molecule, partially or fully neutralized with alkali, (B) at least one salt of at least one of the following acids: nitric acid, sulphuric acid, sulphamic acid, methanesulfonic acid, C1-C2-carboxylic acids, C2-C4-hydroxymonocarboxylic acids, C2-C7-dicarboxylic acids, unsubstituted or substituted with hydroxyl, and C4-C6-tricarboxylic acids, each unsubstituted or substituted with hydroxyl, (C) at least one compound selected from (C1) phosphoric acid C2-C10-monoalkyl esters, (C2) a C3-C10-alkynol, optionally alkoxylated with one to 10 alkoxide groups per hydroxyl group, and (C3) a C4-C10-alkynediol, optionally alkoxylated with one to 10 alkoxide groups per hydroxyl group, said aqueous formulations having pH values in the range of from 7.5 to 10.