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:
Jul. 05, 2011
Filed:
Mar. 09, 2006
Jean-yves Sanchez, Saint Ismier, FR;
Cristina Iojoiu, Grenoble, FR;
Regis Mercier, Irigny, FR;
Manuel Marechal, Ouveillan, FR;
Nadia El Kissi, Grenoble, FR;
Herve Galiano, Joue les Tours, FR;
France Chabert, Paris, FR;
Jean-Yves Sanchez, Saint Ismier, FR;
Cristina Iojoiu, Grenoble, FR;
Regis Mercier, Irigny, FR;
Manuel Marechal, Ouveillan, FR;
Nadia El Kissi, Grenoble, FR;
Herve Galiano, Joue les Tours, FR;
France Chabert, Paris, FR;
Institut National Polytechnique de Grenoble, Grenoble, FR;
Eras-Labo, Saint Nazaire-les-Eymes, FR;
Commissariat a l'Energie Atomique, Paris, FR;
Centre National de la Recherche Scientifique, Paris, FR;
Abstract
The invention relates to a process for the extrusion of thermoplastic polymers having alkaline ionic groups. The process consists in preparing a mixture composed of a thermoplastic polymer having alkaline ionic groups and a plasticizer, in extruding the mixture obtained to form a film; then in washing the film obtained in aqueous medium to remove said plasticizer(s). The plasticizer is chosen from non-volatile compounds which are stable with respect to the ionic groups of the polymer, which are soluble in water or in solvents that are miscible with water, said plasticizers being chosen from the compounds that react with the ionic group of the polymer via formation of a weak bond of the hydrogen bond-type, and the compounds that react with the ionic group of the polymer via formation of a strong bond, of the ionic bond-type.