Compositions: coating or plastic – Coating or plastic compositions – Hectographic or copying
Patent
1977-08-29
1979-02-13
Lesmes, George F.
Compositions: coating or plastic
Coating or plastic compositions
Hectographic or copying
106 21, 106 24, 106 26, 106 31, 252316, C09K 300
Patent
active
041393929
ABSTRACT:
A pressure-sensitive carbonless transfer sheet comprising a paper substrate having a front and back surface and a coating composition adhered to at least one of the front and back surfaces of the paper substrate. The coating composition is set to a flexible, tack-free coat, and the coating composition includes a solvent free non-aqueous hot melt suspending medium which is characterized by being substantially water insoluble, being characterized by the presence of one or more functional groups selected from the group consisting of: carboxyl, carbonyl, hydroxyl, ester, amide, amine, heterocyclic groups and combinations thereof to impart polarity thereto and having a melting point of from about 60.degree. C. to about 140.degree. C. and a melting point range of less than about 15.degree. C. In addition the coating composition includes an encapsulated, chromogenic material which is substantially dispersed therein, the hot melt suspending medium being compatible with the color forming characteristics of the capsular chromogenic material. This invention further includes a liquid chromogenic coating composition which comprises a hot melt suspending medium in combination with a microencapsulated chromogenic material. The chromogenic material is a color precursor of the electron donating type which is mixed with a carrier oil to form an oil solution of the chromogenic color precursor material which is then combined with one or more wall forming compounds.
REFERENCES:
patent: 3016308 (1962-01-01), Macaulay
patent: 3079351 (1963-02-01), Staneslow et al.
patent: 3684549 (1972-08-01), Shank
Davis Gerald T.
Schwab Gerhart
Shackle Dale R.
Cagle Stephen H.
Hess Bruce H.
Lesmes George F.
Palmer Wilson G.
Shane, Jr. Charles N.
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