Electrically conductive PTC ink with double switching temperatures
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United States of America Patent
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Oct 24, 2023
Grant Date -
N/A
app pub date -
Mar 14, 2022
filing date -
Jun 12, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A positive temperature coefficient (PTC) composition having a first thermally active polymer having a melting point of 30-70° C. and providing a first PTC in a lower temperature range below 70° C., and a second thermally active polymer having a melting point of 70-140° C. and providing a second PTC in a higher temperature range above 70° C., the composition also having conductive particles; and an organic solvent with a boiling point higher than 100° C., solvent being capable of dissolving both the first and second thermally active polymer. The PTC composition has two distinct PTC characteristics at the two different temperature ranges.
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International Classification(s)
- H01L:SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICE....
- H05B:ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE ....
- C09D:COATING COMPOSITIONS, e.g. PAINTS, VARNISHES, LACQ....
- A41D:OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- F25C:PRODUCTION, WORKING, STORING OR DISTRIBUTION OF IC....
- E04C:STRUCTURAL ELEMENTS; BUILDING MATERIALS
- H01C:RESISTORS
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