Moisture sensor comprising conductive particles and a hygroscopi

Details Moisture sensor comprising conductive particles and a hygroscopi Moisture sensor comprising conductive particles and a hygroscopi

1997-12-02

2000-05-16

Le, Hoa T.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

338 35, B32B 516

Patent

active

060634863

ABSTRACT:
A moisture sensitive film having conductive particles dispersed in a hygroscopic polymer is disposed between a pair of electrodes to construct a moisture sensor. The hygroscopic polymer is a modified polyvinyl alcohol which is obtained by saponifying a polymer comprising vinyl ester units and 0.1 to 15 mol % of ethylenically unsaturated carboxylic acid units such that the vinyl ester units are saponified to a degree of at least 30 mol %. The moisture sensor has improved condensing/drying cycle performance and moisture resistance.

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