Conducting primer compositions
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United States of America Patent
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Nov 6, 1990
Grant Date -
N/A
app pub date -
Dec 5, 1989
filing date -
Dec 5, 1988
priority date (Note) -
Expired
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Abstract
A conducting composition for detonators having insensitivity to one amp of current or one watt of power comprising 40 to 80 parts by weight of lead styphnate 2 to 10 parts by weight of carbon black or graphite and the balance being lead oxide. Firing times of less than eight milliseconds can be achieved where at least one percent of graphite is included in the composition.
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