Process for making carbon-containing glass resistors

Details Process for making carbon-containing glass resistors Process for making carbon-containing glass resistors

1975-01-27

1976-01-06

Bashore, S. Leon

Glass manufacturing

Processes

Operating under inert or reducing conditions

65 60, 427101, 427122, 427228, 428426, C03C 1500, C03C 700

Patent

active

039308227

ABSTRACT:
An improved process for the production of carbon-containing glass resistors comprising impregnating porous glass with a furfuryl alcohol solution, flash-heating the impregnated glass at temperatures in the range of 150.degree.-225.degree.C. to polymerize the alcohol to a resin, and firing in a non-oxidizing atmosphere to convert the resin to carbon, is described. Substantially improved yields of high value resistors are obtained by the process.

REFERENCES:
patent: 3378431 (1968-04-01), Smith, Jr. et al.
patent: 3390452 (1968-07-01), Huang
patent: 3628984 (1971-12-01), Ishikawa et al.
patent: 3632385 (1972-01-01), Schmitt et al.
patent: 3640906 (1972-02-01), Wojcik
patent: 3775078 (1973-11-01), Elmer et al.
patent: 3810780 (1974-05-01), Ardary et al.
patent: 3813232 (1974-05-01), Forker, Jr. et al.

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