Aqueous primary dispersions, process of their production and use thereof

US9920140B2 · kind B2 · utility

Inventors

• Konstantinos Markou · Cologne, DE
• Andreas Niegemeier · Düsseldorf, DE
• Sabine Holtschulte · Ascheberg, DE

Key dates

• Filing date: Dec 20, 2013
• Grant date: Mar 20, 2018
• Expiry date: Dec 20, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25D13/06
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to aqueous, cationically stabilized primary dispersions comprising dispersed polymer particles having a Z-average particle diameter of 5 to 500 nm and which are obtainable by emulsion polymerization of at least one olefinically unsaturated monomer (A). The emulsion polymerization takes place in the presence of one or more emulsifiers (EQ) having the following general formula: R1—N−(R2)(R3)(R4)X⊖, where R1 is a moiety with 15 to 40 carbon atoms which contains at least one aromatic group and at least one aliphatic group, and which contains at least one functional group selected from hydroxyl groups, thiol groups, and primary or secondary amino groups, and/or has at least one carbon-carbon multiple bond, R2, R3, and R4, independently of one another, are the same or different aliphatic moieties containing 1 to 14 carbon atoms, and X stands for the acid anion of an organic or inorganic acid. The invention further relates to a method for producing the primary dispersions, and to coating agents which include the primary dispersions, and to the use of the primary dispersions for producing electrodeposition coatings, and also to conductive substrates coated with the co…