Cell sealant

Patent · Tue Apr 26 04:00:00 EDT 1988

OSTI ID:7010420

Markin, C; Book, R J; James, D A

An electrochemical cell is described comprising an anode, a cathode and an electrolyte disposed within an open ended cylindrical metallic cell container, with an insulative cell top member being positioned within the open end of a sealant at the interface between the cell top member and the metallic cell container. The sealant is a mixture of a Type 2 BUR asphalt and an elastomeric material selected from the group consisting of (cis-1,4-polyisoprene), styrene-butadiene copolymer (SBR), cis-1,4-polybutadiene and styrene butadiene styrene (SBS), styrene isoprene styrene (SIS), neoprene (poly-chloprene), acrylonitrile-butadiene copolymer (NBR), ethylene-propylene elastomers (EPR), butyl rubber (copolymers of isobutylene), urethane, nitrile (polymers of butadiene and acrylonitrile), polysulfide, polyacrylate, silicone, chlorosulfonated polyethylene, and EPDM (terpolymers of ethylene, propylene and diene monomers), and mixtures thereof, and wherein the elastomeric material is substantially inert to the electrolyte and is present in an amount between 0.5% to 10% by weight of the asphalt.

• Assignee: Duracell Inc., Bethel, CT
• Patent Number(s): US 4740435
• OSTI ID: 7010420
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
ACRYLONITRILE
ALKENES
ALKYLATED AROMATICS
ANODES
AROMATICS
ASPHALTS
BITUMENS
BUTADIENE
CARBAMATES
CARBONIC ACID DERIVATIVES
CARBOXYLIC ACID SALTS
CATHODES
CHALCOGENIDES
CHEMICAL COMPOSITION
COPOLYMERS
DIENES
ELASTOMERS
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTRODES
ELECTROLYTES
ELEMENTS
ETHYLENE
HYDROCARBONS
ISOPRENE
NEOPRENE
NITRILES
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
OTHER ORGANIC COMPOUNDS
POLYENES
POLYMERS
PROPYLENE
RUBBERS
SEALS
SEMIMETALS
SILICON
STYRENE
SULFIDES
SULFUR COMPOUNDS
TAR
URETHANE