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. 10, 2018
Filed:
Sep. 11, 2013
Vallourec Oil and Gas France, Aulnoye-Aymeries, FR;
Nippon Steel & Sumitomo Metal Corporation, Chiyoda-ku, JP;
Mohamed Gouider, Caluire-et-Cuire, FR;
Eric Gard, Genay, FR;
Eliette Pinel, Sainte-Euphemie, FR;
Mikael Petit, Villefranche sur Saone, FR;
VALLOUREC OIL AND GAS FRANCE, Aulnoye-Aymeries, FR;
NIPPON STEEL & SUMITOMO METAL CORPORATION, Chiyoda-ku, JP;
Abstract
The invention concerns a process for preparing an aqueous polyamide-imide dispersion, characterized in that it comprises at least one step of selecting a polyamide-imide powder and a step of producing a dispersion comprising the polyamide-imide powder, a polar aprotic solvent with a boiling point of more than 180° C. at 760 mm Hg, and water. The invention also concerns a process for producing a dry polyamide-imide film on a substrate.