Compositions – Nonreactive analytical – testing – or indicating compositions
Patent
1975-11-28
1978-08-08
Schafer, Richard E.
Compositions
Nonreactive analytical, testing, or indicating compositions
73 17R, 73150R, 73150A, 73356, 106 19, 106308B, 106308M, 106308S, 116114V, 1161145, 428347, 428349, 428411, 428539, C09K 300, G01K 1112, C09D 508, C09D 526
Patent
active
041055837
ABSTRACT:
A thermochromic paint, which changes color when heated to a certain temperature, and which is particularly suited for use on plastic substrates which are subject to oxidative degradation is disclosed. The improvement comprises the addition to the thermochromic paint of a non-thermochromic compound selected from the group consisting of the sulfates, hydrated sulfates and nitrides of boron, aluminum, tin, lead, arsenic, antimony, bismuth, zinc and phosphorus; the sulfides and hydrated sulfides of boron, aluminum, bismuth and phosphorus; the oxides and hydrated oxides of boron, arsenic, antimony and phosphorus and the salts, organic compounds and free acids of the oxyanions of boron, arsenic, antimony and phosphorus.
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Glover Leon C.
Lopez Eugene F.
Gron T. S.
Raychem Corporation
Schafer Richard E.
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