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:
Oct. 08, 2013
Filed:
Sep. 04, 2006
Tamal Ghosh, Hopewell Junction, NY (US);
Malcolm Skinner, Bradford, GB;
Tiina Luttikhedde, Markelo, NL;
Céline Hossenlopp, Mulhouse, FR;
Laurent Brauge, Ribécourt-Dreslincourt, FR;
Tamal Ghosh, Hopewell Junction, NY (US);
Malcolm Skinner, Bradford, GB;
Tiina Luttikhedde, Markelo, NL;
Céline Hossenlopp, Mulhouse, FR;
Laurent Brauge, Ribécourt-Dreslincourt, FR;
BASF SE, Ludwigshafen, DE;
Abstract
The present invention provides rheology modifiers, which are water-soluble polymers having a weight average molecular weight (Mw) of at least 1,000,000 g/mol and an intrinsic viscosity of at least 2.5 dl/g, both as determined by size exclusion chromatography, and wherein the water-soluble polymers are in the form of solid particles. It also provides mixtures of rheology modifiers comprising a first rheology modifier, which is a water-soluble polymer having a weight average molecular weight (Mw) of at least 1,000,000 g/mol and an intrinsic viscosity of at least 2.5 dl/g, both as determined by size exclusion chromatography, and a second rheology modifier, which has a weight average molecular weight of from 2,000 g/mol to 800,000 g/mol. It also provides coating composition containing the rheology modifiers, respectively, mixtures of rheology modifiers, a process for their preparation, a process for coating a substrate using these coating compositions and substrates coated with these coating compositions.