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:
Mar. 11, 2014
Filed:
Dec. 05, 2008
Olivier Braun, Castres, FR;
Paul Mallo, Croissy-sur-Seine, FR;
Audrey Bonnardel, Castres, FR;
Francois Guy, Launaguet, FR;
Olivier Braun, Castres, FR;
Paul Mallo, Croissy-sur-Seine, FR;
Audrey Bonnardel, Castres, FR;
Francois Guy, Launaguet, FR;
Societe d'Exploitation de Produits pour les Industries Chimiques SEPPIC, Paris, FR;
Scott Bader Company Limited, Wellingborough, GB;
Abstract
Process for the preparation of a an inverse latex including from 20% to 70% by weight and preferably from 25% to 50% by weight of a branched or crosslinked polyelectrolyte, characterized in that the polyelectrolyte is a copolymer of 2-acrylamido-2-methylpropanesulfonic acid partially or totally salified with acrylamide and optionally one or more monomers chosen from monomers containing a partially or totally salified weak acid function and/or from neutral monomers other than acrylamide, the production process including the control of the pH in the initial aqueous phase; Cosmetic, dermopharmaceutical or pharmaceutical composition including the inverse latex directly obtained by the process.