Gelling agent for alkaline cell and alkaline cell
AssigneeSanyo Chemical Industries, Ltd.
InventorsTakashi Sumiya, Takeaki Yamaguchi
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Abstract
A gelatinizer for alkaline batteries, which comprises crosslinked polymer particles (A) comprising, as one or more main constituting monomer units, (meth) acrylic acid and/or an alkali metal salt thereof having an average particle size of 0.1 to 2,000 μm, and a super fine particle form metal oxide (1) having an average particle size of 0.1 to 100 nm; and an alkaline battery using the gelatinizer. The impact resistance of the battery, the discharge characteristic thereof, the lifespan thereof, and others are very good. The present invention can make the time for producing alkaline batteries short, and is useful for producing batteries containing none of materials harmful to the human body, such as benzene.
Claims16
A gelatinizer for alkaline batteries, which comprises crosslinked polymer particles (A) comprising, as one or more main constituting monomer units, (meth)acrylic acid and/or an alkali metal salt thereof having an average particle size of 0.1 to 2,000 μm;
- and a super fine particle form metal oxide (1) having an average particle size of 0.1 to 100 nm.
An alkaline battery wherein crosslinked polymer particles (A) comprising, as one or more main constituting monomer units, (meth)acrylic acid and/or an alkali metal salt thereof having an average particle size of 0.1 to 2,000 μm are used as a gelatinizer for an alkaline electrolyte for a cathode, characterized by comprising a super fine particle form metal oxide (1) having an average particle size of 0.1 to 100 nm in an amount of 0.001 to 5% by mass of the alkaline electrolyte.
Dependencies are inferred from the claim text.