Binder for electricity storage device and binder composition for electricity storage device
AssigneeAsahi Kasei Kabushiki Kaisha
InventorsMasatoshi Ikemi, Hiroshi Miyazawa
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Abstract
A binder for an electricity storage device comprising a copolymer having an ethylenic unsaturated monomer having a polyalkyleneglycol group (P) as a monomer unit, wherein the average number of repeating units (n) of polyalkyleneglycol groups of the ethylenic unsaturated monomer having a polyalkyleneglycol group (P) is 3 or greater.
Claims20
A binder for an electricity storage device comprising a copolymer having an ethylenic unsaturated monomer having a polyalkyleneglycol group (P) and a monomer without a polyalkyleneglycol group that is copolymerizable with the ethylenic unsaturated monomer having a polyalkyleneglycol group (P) as a monomer unit,
- wherein the average number of repeating units (n) of said polyalkyleneglycol group of the ethylenic unsaturated monomer having a polyalkyleneglycol group (P) is 3 or greater,
- wherein the monomer without a polyalkyleneglycol group comprises ethylenic unsaturated monomers with an amide group (b2) at 0.1 to 10 weight % with respect to 100 weight % of the copolymer,
- wherein the monomer without a polyalkyleneglycol group further comprises an ethylenic unsaturated monomer with a cycloalkyl group (A) and a (meth)acrylic acid ester monomer (b5), and
- wherein the total amount of the ethylenic unsaturated monomer with a cycloalkyl group (A) and the (meth)acrylic acid ester monomer (b5) is 50 to 98 weight % with respect to 100 weight % of the copolymer.
Dependencies are inferred from the claim text.