Pitch based impregnant for carbon and graphite and method
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United States of America Patent
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Mar 26, 1996
Issued Date -
N/A
app pub date -
Jul 19, 1995
filing date -
Mar 27, 1992
priority date (Note) -
Expired
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Abstract
A pitch based impregnant for a carbon or graphite body and a method of impregnation. The method involves forming a liquid solution of a substantially solids free pitch having a Q.I. of less than 1% dissolved in furfural and containing an acid catalyst with the solution having a viscosity of less than 150 cps at room temperature and heating the impregnated body to between 150.degree.-200.degree. C. until the impregnant is cured.
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