Stabilized ink compositions, transfer sheets coated therewith and methods of making same

Claim 1

AN INK COMPOSITION FOR DUPLICATION PROCESSES COMPRISING A VEHICLE AND A COLOR PRODUCING AGENT, SAID VEHICLE COMPRISING A WAXY SOLID ADAPTED FOR USE AS A FILM FORMING AGENT FOR COATING A TRANSFER SHEET, AND SAID COLOR PRODUCING AGENT COMPRISING THE CARBINOL OF AN N-POLYALKYL-TRI(PAMINOPHENYL METHANE DYE HAVING FROM 5 TO 6 ALKYL RADICALS OF NOT MORE THAN 4 C-ATOMS EACH ATTACHED TO ITS N-ATOMS; SAID N-POLYALKYL DYE BEING IN A STATE OF PURITY ESSENTIALLY FREE OF THE CORRESPONDING COLOR AND BEING STABILIZED IN SAID STATE BY HAVING OCCLUDED IN ITS CRYSTALS NOT MORE THAN 10% OF ITS OWN WEIGHT OF A QUATERNARY AMMONIUM HYDROXIDE WHICH HAS IN ITS QUATERNARY N-ATOM AT LEAST ONE RADICAL OF THE GROUP CONSISTING OF ALKYL, ARALKYL, ARYL, CYCLOALKYL, HYDROXYALKYL AND EPIHYDRIN BUT IS SOLUBLE IN SECONDARY AND TERTIARY ALIPHATIC, MONOHYDRIC, SATURATED ALCOHOLS OF 3 TO 6 CARBON ATOMS; SAID INK COMPOSITION COMPRISING FURTHER A NITROGENOUS ORGANIC BASE SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC PRIMARY, SECONDARY AND TERTIARY AMINES AND QUATERNARY AMMONIUM HYDROXIDES AND HAVING IN ITS MOLECULE AT LEAST ONE ALKYL RADICAL OF MORE THAN 11 C-ATOMS IN A STRAIGHT CHAIN; SAID NITROGENOUS BASE BEING A FUSIBLE SOLID WHICH BECOMES LIQUID AT A TEMPERATURE BETWEEN 100* AND 125* C. BUT DOES NOT BOIL BELOW 150* C. AND BEING PRESENT IN QUANTITY NOT LESS THAN 5% AND NOT GREATER THAN 50% BY WEIGHT BASED ON THE COMBINED WEIGHT OF THE NON-VOLATILE CONSTITUENTS OF THE INK COMPOSITION AND NOT LESS THAN 60% BY WEIGHT WITH REFERENCE TO THE WEIGHT OF SAID STABILIZED N-POLYALKYL DYE.