Positive electrode current collector and manganese dry...

Details Positive electrode current collector and manganese dry... Positive electrode current collector and manganese dry...

2003-03-12

2008-08-12

Ryan, Patrick (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

C429S128000, C429S137000, C429S209000

Reexamination Certificate

active

07410721

ABSTRACT:
The positive electrode current collector for a manganese dry battery of the present invention comprises a carbon rod, and either one of a paraffin wax containing hydrocarbon whose molecular weight is 300 to 500 and a microcrystalline wax containing hydrocarbon whose molecular weight is 500 to 800, which is impregnated into the carbon rod, is characterized in that the endothermic amount of the paraffin wax or the microcrystalline wax obtained by differential scanning calorimetry up to 45° C. is not more than 1.0 J/g.This enables the manganese dry battery employing the positive electrode current collector of the present invention to keep its sealing performance in a good condition during high-temperature storage even with the use of a low-density carbon rod.

REFERENCES:
patent: 3179537 (1965-04-01), Reilly
patent: 3891463 (1975-06-01), Karobath et al.
patent: 4157317 (1979-06-01), Nagasawa et al.
patent: 63-168968 (1988-07-01), None
patent: 3-297063 (1991-12-01), None
patent: 6-176763 (1994-06-01), None
patent: 07-272702 (1995-10-01), None
patent: 2001-312093 (2001-11-01), None

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