Polyether polymer, process for producing the same,...

Details Polyether polymer, process for producing the same,... Polyether polymer, process for producing the same,...

2005-05-17

2005-05-17

Boykin, Terressa (Department: 1711)

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

Synthetic resins

Polymer of an ethylenically unsaturated reactant with a...

C264S176100, C528S50200C

Reexamination Certificate

active

06894143

ABSTRACT:
A composition for solid polymer electrolyte which comprises a polyether polymer and an electrolyte salt compound soluble in the polyether polymer; wherein said polyether polymer is either (1) a polyether polymer having a toluene insoluble content of not larger than 5 weight %, or (2) a polyether polymer having a Mooney viscosity of 3 to 190, which has been prepared by applying a shearing force under heated conditions using an extruder to a polyether polymer having a Mooney viscosity of 10 to 200 so that the Mooney viscosity is reduced by 5 or more. This composition exhibits good film-forming property, and gives a solid polymer electrolyte exhibiting good and uniform ionic conductivity, and having high mechanical strength and surface smoothness. The solid polymer electrolyte is suitable for batteries and capacitors, especially for a lithium ion secondary battery.

REFERENCES:
patent: 994143 (2000-04-01), None
patent: 02-024975 (1990-01-01), None
patent: 04-033952 (1992-02-01), None
patent: 2000-109675 (2000-04-01), None
patent: 2001-217009 (2001-08-01), None
patent: 2001-319691 (2001-11-01), None
patent: 02003321541 (2003-11-01), None

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