Ion-conducting polymeric materials

Details Ion-conducting polymeric materials Ion-conducting polymeric materials

2006-10-24

2006-10-24

Boykin, Terressa (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

C525S328600, C525S344000, C525S471000, C528S125000, C528S171000, C528S174000

Reexamination Certificate

active

07125953

ABSTRACT:
A method of preparing an ion-conducting polymeric material, for example, for a fuel cell, in a desired form (hereinafter “said formed polymeric material”), comprises: (i) selecting a first ion-conducting polymeric material; (ii) selecting a solvent formulation which can dissolve said first ion-conducting polymeric material, wherein said formulation includes a first solvent part which is water; (iii) preparing a composite formulation in a process which includes dissolving first ion-conducting polymeric material in said solvent formulation; (iv) forming said composite formulation into a desired form; (v) providing conditions for removal of said solvent formulation from said form described in (iv) thereby to prepare said formed polymeric material. The first ion-conducting polymeric material preferably includes polyaryletherketone units. Said solvent formulation preferably includes a second solvent part selected from acetone, tetrahydrofuran and acetone.

REFERENCES:
patent: 4990252 (1991-02-01), Testa et al.
patent: 5795496 (1998-08-01), Graham et al.
patent: 6613106 (2003-09-01), Debe et al.
patent: 6828353 (2004-12-01), Charnock et al.
patent: 0 182 506 (1991-03-01), None
patent: WO 98/52732 (1998-11-01), None
patent: WO 00/15691 (2000-03-01), None

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