Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Identified solvent or dispersant for color-former – other...
Patent
1985-01-03
1988-01-05
Terapane, John F.
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Identified solvent or dispersant for color-former, other...
2524081, 252600, 252962, 252586, 428913, 374162, 116207, 106311, G03C 1733, G01K 1112
Patent
active
047177101
ABSTRACT:
A thermochromic composition comprising (1) an electron-donating chromogenic material, (2) a 1,2,3-triazole compound, (3) a weakly basic, sparingly soluble azomethine or carboxylic acid primary amine salt, and (4) an alcohol, amide or ester serving as a solvent.
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Hayashi Yoshimi
Shimizu Goro
Kilby Catherine S.
Matsui Shikiso Chemical Co. Ltd.
Sanrio Company Ltd.
Terapane John F.
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