Pitch based impregnant for carbon and graphite and method

Details Pitch based impregnant for carbon and graphite and method Pitch based impregnant for carbon and graphite and method

1995-07-19

1996-03-26

Brunsman, David

Compositions: coating or plastic

Coating or plastic compositions

Bituminous material or tarry residue

106236, 106278, 204290R, 204294, C09D19500

Patent

active

055017290

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.

REFERENCES:
patent: 3375132 (1968-03-01), Geise
patent: 4140832 (1979-02-01), Meregay
patent: 4554024 (1985-11-01), Zimmer et al.
patent: 4762566 (1988-08-01), Gseike
patent: 5076845 (1991-12-01), Seo et al.
patent: 5372702 (1994-12-01), Kojima et al.

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