INK COMPOSITION FOR DRY LITHOGRAPHY

PURPOSE:To provide the titled ink composition having excellent resistance to scumming and high fluidity, prepared by gelation of a base ink with a specified organic magnesium compd. and/or a specified organic boric acid compd. CONSTITUTION:Used as gelling agent is at least one compd. selected from a...

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Bibliographische Detailangaben
Hauptverfasser:	IKEDA NORIMASA, NAGASE KOUICHI, SUGAWA KIKUNOJIYOU
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES FILLING PASTES INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	PURPOSE:To provide the titled ink composition having excellent resistance to scumming and high fluidity, prepared by gelation of a base ink with a specified organic magnesium compd. and/or a specified organic boric acid compd. CONSTITUTION:Used as gelling agent is at least one compd. selected from among magnesium salts of 1-40C mono- (or di-) carboxylic acids (e.g. magnesium stearate) and organic boron compd. of the formula (where R, R' and R'' are each 1-10C alkyl) (e.g. triethyl borate). The gelling agent is added in an amount of 0.1-10wt% to a composition consisting of vehicle (e.g. rosin-modified phenolic resin), colorant, dispersant, solvent, etc., followed by mixing at room temperature -250 deg.C for 10-30min. The resultant gel varnish is kneaded between rollers, etc. to obtain the ink composition.