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:
Nov. 22, 2011
Filed:
Apr. 16, 2009
Jérôme Fresnais, Massy, FR;
Jean-francois Berret, Chaville, FR;
Ling Qi, Orleans, FR;
Jean-paul Chapel, Bordeaux, FR;
Jean-christophe Castaing, Burlington, NJ (US);
Jérôme Fresnais, Massy, FR;
Jean-Francois Berret, Chaville, FR;
Ling Qi, Orleans, FR;
Jean-Paul Chapel, Bordeaux, FR;
Jean-Christophe Castaing, Burlington, NJ (US);
Rhodia Operations, Aubervilliers, FR;
Abstract
A co-assembly method includes, in an aqueous polyelectrolyte composition comprising: (a) a first polyelectrolyte dispersed in the composition and having a net electric charge of a first polarity, (b) a second polyelectrolyte dispersed in the composition and having a net electric charge of a second polarity, wherein the second polarity is opposite the first polarity, and (c) an electrolyte dissolved in the composition in a concentration effective to prevent co-assembly of the polyelectrolytes, the step of allowing co-assembly of the polyelectrolytes by: (1) decreasing the concentration of the electrolyte, or (2) forming an interface between the aqueous polyelectrolyte composition and a surface of a solid substrate or of a second liquid phase, wherein the surface has an affinity for at least one of the polyelectrolytes, or (3) decreasing the concentration of the electrolyte and forming such an interface.