Process for producing a polymer electrolyte of a vinylidene fluoride copolymer for a nonaqueous battery
AssigneeKureha Corporation
InventorsTakumi Katsurao, Katsuo Horie, Yukio Ichikawa, Aisaku Nagai
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Abstract
A process for producing a polymer electrolyte for a nonaqueous battery by introducing 80 to 97 wt. % of vinylidene fluoride monomer and 3 to 20 wt % of at least one monomer copolymerizable with vinylidene fluoride monomer simultaneously all at once into a polymerization vessel, polymerizing the monomers to provide a vinylidene fluoride copolymer having polymerized units of the monomers and having an inherent viscosity of 1.5 to 10 dl/g, and impregnating the vinylidene fluoride copolymer with a nonaqueous electrolytic solution to provide a polymer electrolyte.
Claims10
A process for producing a polymer electrolyte for a nonaqueous battery, comprising:
- introducing 80 to 97 wt. % of vinylidene fluoride monomer and 3 to 20 wt % of at least one monomer copolymerizable with vinylidene fluoride monomer into a polymerization vessel, all of said vinylidene fluoride monomer and at least one monomer being introduced simultaneously into the polymerization vessel before commencing polymerization,
- then suspension-polymerizing the monomers to provide a vinylidene fluoride copolymer comprising polymerized units of the monomers and having an inherent viscosity of 1.5 to 10 dl/g, and
- impregnating the vinylidene fluoride copolymer with a nonaqueous electrolytic solution to provide a polymer electrolyte.
Dependencies are inferred from the claim text.