Water-soluble, hydrophobically associating copolymers having novel hydrophobically associating monomers

US9777094B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Christian Bittner · Bensheim, DE
• Björn Langlotz · Trostberg, DE
• Benjamin Wenzke · Hamburg, DE
• Christian Spindler · Günzburg, DE
• Roland Reichenbach-Klinke · Traunstein, DE

Key dates

• Filing date: Dec 13, 2013
• Grant date: Oct 3, 2017
• Expiry date: Dec 13, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F216/1433
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to water-soluble hydrophobically associating copolymers which are obtained in the presence of a nonpolymerizable surface-active compound and which comprise novel hydrophobically associating monomers. The monomers comprise an ethylenically unsaturated group and a polyether block, the polyether block comprising a hydrophilic polyethyleneoxy block and a hydrophobic polyalkyleneoxy block consisting of alkyleneoxy units having at least 4 carbon atoms. The monomers may optionally have a terminal polyethyleneoxy block. The invention further relates to processes for preparing the copolymers and to the use thereof.