Electrical resistors – Resistance value responsive to a condition – Gas – vapor – or moisture absorbing or collecting
Patent
1982-09-28
1984-09-25
Albritton, C. L.
Electrical resistors
Resistance value responsive to a condition
Gas, vapor, or moisture absorbing or collecting
733365, 73335, H01L 700
Patent
active
044738137
ABSTRACT:
The invention relates to a humidity sensor of electric resistance type whose electric resistance changes in accordance with an ambient humidity, characterized by a protective film of silicone resin provided on the surface of a humidity-sensitive material, and to a method for preparing the same. The protective film of silicone resin is formed by applying a varnish of siloxanes to the humidity-sensitive material and subjecting the varnish to reaction. The varnish can be of one-part curing system or two-part curing system, and desirably the reaction of siloxanes is a cross-linking reaction. The formed protective film is not influenced by swelling or shrinking of the humidity-sensitive material, and is prevented from flowing off due to a temperature rise, or from deposition of dusts, etc.
REFERENCES:
patent: 3073161 (1963-01-01), Crabtree
patent: 3167734 (1965-01-01), Brucker et al.
patent: 3559456 (1971-02-01), Lomker et al.
patent: 3848218 (1974-11-01), Wakabayashi et al.
patent: 3864659 (1975-02-01), Furuuchi et al.
patent: 3891958 (1975-06-01), Wakabayashi
patent: 4167725 (1979-09-01), Shimizu et al.
patent: 4245069 (1981-01-01), Covington
patent: 4386336 (1983-05-01), Kinomoto et al.
Kinjo Noriyuki
Ohara Shuichi
Sugawara Toru
Tsuchitani Shigeki
Albritton C. L.
Hitachi , Ltd.
Sears Christopher N.
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