The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2017
Filed:
Dec. 13, 2013
Basf SE, Ludwigshafen, DE;
Christian Bittner, Bensheim, DE;
Björn Langlotz, Trostberg, DE;
Benjamin Wenzke, Hamburg, DE;
Christian Spindler, Houston, TX (US);
Roland Reichenbach-Klinke, Traunstein, DE;
Markus Klumpe, Mannheim, DE;
Nicole Meier, Mannheim, DE;
Ulrich Annen, Haβloch, DE;
Thomas Ostrowski, Mannheim, DE;
BASF SE, Ludwigshafen, DE;
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.