Dry planographic printing ink composition
AssigneeDai Nippon Printing Co., Ltd.
InventorsAtsumi Noshiro, Yoshio Inoue
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AssigneeDai Nippon Printing Co., Ltd.
InventorsAtsumi Noshiro, Yoshio Inoue
Estimating the term…
A dry planographic printing ink composition which comprises a vehicle for an ink, a pigment and a solvent, characterized by using as a portion of the vehicle 1 to 40% by weight of a silicone modified alkyd resin containing 5 to 50% by weight of at least one of the organopolysiloxanes substituted by amino groups represented by the average composition formulas: ##EQU1## AND ##EQU2## WHEREIN Z stands for an amino group or mono-valent substituent having a terminal amino group, R.sup.1 stands for a di-valent hydrocarbon group containing 1 to 3 carbon atoms, R.sup.2 stands for a mono-valent hydrocarbon group containing 1 to 3 carbon atoms, R.sup.3 stands for a hydrogen atom or mono-valent hydrocarbon group containing 1 to 40 carbon atoms, R.sup.4 stands for a methyl group or phenyl group at least 90 molar % of which is the methyl group, R.sup.5 stands for a hydrogen atom or mono-valent organic group, n is 1, 2 or 3, m is 0 or 1, x + y is 6 to 200 and y/x is 1/100 to 40/100 and w is 5 to 50. The ink composition is a very favorable dry planographic printing ink composition having a practicable printing adaptability.
A dry planographic printing ink composition which comprises a vehicle for an ink, a pigment and a solvent, characterized by using as a portion of the vehicle 1 to 40% by weight of a silicone modified alkyd resin containing 5 to 50% by weight of at least one organopolysiloxane substituted by amino groups and having the average composition formula:
Dependencies are inferred from the claim text.