Use of nonionic surfactants as emulsifiers for emulsion polymerization (III)

US8779075B2 · kind B2 · utility

Assignee

• Cognis IP Management GmbH · DE

Inventors

• Markus Scherer · Lebach, DE
• Thomas Schliwka · Bensberg, DE
• Katharina Hömberg · Hilden, DE
• Uwe Held · Velbert, DE
• Thomas Mausberg · Haan, DE
• Ronald Klagge · Erkrath, DE

Key dates

• Filing date: Mar 13, 2010
• Grant date: Jul 15, 2014
• Expiry date: Mar 13, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2/30
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to the use of aqueous solutions of nonionic surfactants as gel phase free emulsion systems for emulsion polymerization. The nonionic surfactants are chosen from the group (a) of the addition products from 1 to 40 mol ethylene and/or propylene oxide per mol of allyl alcohol, and (b) of the addition products from 1 to 40 mol ethylene and/or propylene oxide per mol of allyl alcohol, wherein the OH-group of said addition products is end-capped in the sense that it is substituted by a group OR, wherein R is an alkyl group with 1 to 20 C-atoms, which can be saturated or unsaturated, straight chained or branched.