Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing
Reexamination Certificate
2011-06-07
2011-06-07
Seidleck, James (Department: 1765)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Ion-exchange polymer or process of preparing
C521S028000, C521S033000, C521S037000, C429S492000, C429S493000, C210S500410
Reexamination Certificate
active
07956095
ABSTRACT:
The invention relates to a process for the extrusion of thermoplastic polymers having acid ionic groups.The process consists in preparing a mixture composed of a thermoplastic polymer having acid 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.
REFERENCES:
patent: 3341366 (1967-09-01), Hodgdon, Jr. et al.
patent: 4711907 (1987-12-01), Sterzel et al.
patent: 4721771 (1988-01-01), Jansons et al.
patent: 2003/0187081 (2003-10-01), Cui
patent: 2006/0102869 (2006-05-01), Cavaille et al.
patent: 1 380 619 (2004-01-01), None
patent: 2 841 255 (2003-12-01), None
patent: WO 02/092673 (2002-11-01), None
P. Genova-Dimitrova, B. Baradie, D. Foscallo, C. Poinsignon and J. Y. Sanchez Ionomeric membranes for proton exchange membrane fuel cell (PEMFC): sulfonated polysulfone associated with phosphatoantimonic acid, Journal of Membrane Science 2001, 185, 59-71.
International Search Report, International Application No. PCT/FR2006/000526, dated Mar. 8, 2006.
Chabert France
El Kissi Nadia
Iojoiu Cristina
Piffard Yves
Sanchez Jean-Yves
Centre National de la Recherche Scientifique
Commissariat a l''Energie Atomique
Eras-Labo
Institut National Polytechnique de Grenoble
Merchant & Gould
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