Erhöhung des Ausschwitzungwiderstands von Farbstoffen durch Austausch der Gegenions

A thermal ink jet ink comprises (a) ca. 0.5-40 wt.% of a low vapour pressure solvent; (b) ca. 0.1-8 wt.% of a sulphonate or carboxylate dye with an amine-contg. counter ion having the formula: +N-(CH3)mH3-m-(CH2)n-R (I) m = 1-3; n = 3-6 and R = a hydrophilic substituent or cycloaliphatic or aromatic...

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Bibliographic Details
Main Author LAUW, HIANG P
Format Patent
LanguageGerman
Published 11.04.2002
Edition7
Subjects
ADHESIVES
CHEMICAL PAINT OR INK REMOVERS
CHEMISTRY
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS
COLOUR PRINTING
CORRECTING FLUIDS
DYES
FILLING PASTES
INKS
LINING MACHINES
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
PASTES OR SOLIDS FOR COLOURING OR PRINTING
PERFORMING OPERATIONS
POLISHES
PRINTING
PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES
STAMPS
TRANSPORTING
TYPEWRITERS
USE OF MATERIALS THEREFOR
WOODSTAINS
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Summary:A thermal ink jet ink comprises (a) ca. 0.5-40 wt.% of a low vapour pressure solvent; (b) ca. 0.1-8 wt.% of a sulphonate or carboxylate dye with an amine-contg. counter ion having the formula: +N-(CH3)mH3-m-(CH2)n-R (I) m = 1-3; n = 3-6 and R = a hydrophilic substituent or cycloaliphatic or aromatic gp. with a hydrophilic substituent, the amine-contg. counterion replacing any cation previously associated with the dye; and (c) water. A method of reducing bleed between colour inks in a thermal jet printer by use of the claimed inks is also claimed.
Bibliography:Application Number: DE19946028859T