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. 06, 2001
Filed:
Mar. 31, 1999
Applicant:
Inventors:
Patrizia Maccone, Milan, IT;
Alberto Zompatori, Bologna, IT;
Assignee:
Ausimont S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
C08F / ;
Abstract
A process for preparing a solution and/or dispersion containing sulphonic (per)fluorinated ionomers having —SO,M functional groups, wherein M is selected from H, Li, Na, K, NR,(R equal to or different from each other are selected from H, CH,, C,H,), characterized in that it dissolves the above defined ionomers at a temperature comprised between the room temperature and about 150° C., in a monophasic ternary mixture essentially constituted by water, by a C,-C,alcohol and by a fluoro(poly)oxyalkylene having one hydrogen atom in at least a fluorinated end group; the dispersed polymer particle sizes are in the range 30-100 nm.