Process for preparing a macromonomer

US9657137B2 · 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
• Markus Klumpe · Mannheim, DE
• Nicole Meier · Mannheim, DE
• Ulrich Annen · Nümbrecht, DE
• Thomas Ostrowski · Mannheim, DE

Key dates

• Filing date: Dec 13, 2013
• Grant date: May 23, 2017
• Expiry date: Dec 13, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2650/36
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing hydrophobically associating macromonomers M and to the novel macromonomers prepared by means of the process according to the invention. The macromonomers M comprise a copolymerizable, ethylenically unsaturated group and a polyether structure in block form, the latter consisting of a polyethyleneoxy block and a hydrophobic polyalkyleneoxy block consisting of alkyleneoxy units having at least 4 carbon atoms. Optionally, the macromonomers M may have a terminal polyethyleneoxy block. The macromonomers prepared by the process according to the invention are suitable for reaction with further monomers, especially with acrylamide, to give a water-soluble, hydrophobically associating copolymer.