Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Patent
1991-05-21
1993-01-12
Stoll, Robert L.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
503213, 503214, B01J 1302, B41M 5165
Patent
active
051789493
ABSTRACT:
The present invention relates to a color-former having microcapsules which comprise an electron-donating colorless dye dispersed in a hydrophobic liquid. The present invention provides a color-former using both an electron-donating colorless dye and a hydrophobic liquid which previously were unable to be used because of the lack of solubility. A uniform and stable dispersion of electron-donating colorless dye in a hydrophobic core liquid is prepared by using oil-soluble non-ionic surfactant.
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Harada Shozo
Murano Tsutomu
Sakamoto Masahiro
Covert John M.
Jujo Paper Co. Ltd.
Stoll Robert L.
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