Process for emulsion polymerization

US9109054B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Christian Hubert Weidl · Speyer, DE
• Ronald Klagge · Erkrath, DE
• Uwe Held · Velbert, DE
• Marta Reinoso Garcia · Dossenheim, DE
• Thomas Mausberg · Haan, DE

Key dates

• Filing date: Jun 11, 2013
• Grant date: Aug 18, 2015
• Expiry date: Jun 11, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K23/42
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Process for polymerizing at least one monomer under emulsion polymerization conditions, characterized in that the (co)monomers are selected from vinyl aromatic compounds, ethylenically unsaturated carboxylic acids with 3 to 10 carbon atoms, C1-C10-alkyl esters of ethylenically unsaturated carboxylic acids with 3 to 10 carbon atoms, 1,3-butadiene, and a-olefins bearing in the range of from 10 to 250 carbon atoms per molecule, in pure form or as mixture with isomers, and using a surfactant mixture comprising (A) an alkoxylation product of at least one alkanol (a), characterized in that alkanol (a) has 6 to 12 carbon atoms per molecule and the average number of alkylene oxide units per molecule in alkoxylation product (A) assumes a value in the range of from 35 to 55, the alkylene oxide units are selected from C2-C10-alkylene oxide units and alkanol (a) has an average degree of branching of at least 1; and (B) an alkoxylation product of at least one alkanol (b), characterized in that alkanol (b) has 13 to 19 carbon atoms per molecule and the average number of alkylene oxide units per molecule in alkoxylation product (B) assumes a value in the range of from 35 to 55, the alkylene oxide…