Method for increasing the stability of non-ionic surfactant-containing ink composition

A method for increasing the cloud point and stability of an ink compsn. comprises: (a) providing an ink compsn. contg. solvent, colouring agent, and ethoxylated non-ionic surfactant(s); (b) placing the compsn. in contact with multicellular foam which reacts with the surfactant to form a treated ink...

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Bibliographische Detailangaben
Hauptverfasser:	LAUW, HIANG, MACLEOD, CHERYL A, RADKE, GAROLD
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COLOUR PRINTING CORRECTING FLUIDS CORRECTION OF TYPOGRAPHICAL ERRORS DYES FILLING PASTES i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME 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 SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	A method for increasing the cloud point and stability of an ink compsn. comprises: (a) providing an ink compsn. contg. solvent, colouring agent, and ethoxylated non-ionic surfactant(s); (b) placing the compsn. in contact with multicellular foam which reacts with the surfactant to form a treated ink prod. having a greater cloud point than the original compsn.; and (c) extracting the ink prod. from the foam. Also claimed are the following: (1) a method in which in step (c), the foam is compressed to expel the treated ink prod.; (2) a method as in the main claim in which 0.1-30 wt.% solvent, 2-7 wt.% colouring agent, and 0.1-10 wt.% surfactant is used; the original cloud point being 30-50 [deg]C, and the final cloud point being about 60 [deg]C; (3) a method in which the foam is PU foam; (4) a method as in (1) in which the foam is PU foam; and (5) a method as in (2) in which the foam is PU foam.