Abstract: The present invention relates to an alcohol-based printing ink composition, comprising a colorant (E), a medium and a polyurethane urea resin (D) obtained by reacting a polyol (A), a diisocyanate (B) and a chain extender (C), wherein the polyol (A) comprises a polyester polyol (A0) having a repeating unit derived from a saturated hydroxycarboxylic acid having a side chain, and the medium comprises an alcohol (F), wherein the proportion of the alcohol (F) is at least 50% by weight relative to a value of 100% by weight for the total medium. Accordingly, the invention provides a printing ink comprising an alcohol having minimal environmental impact as the main component of the ink medium, the ink exhibiting excellent colorant dispersibility and storage stability, and having excellent re-solubility during long runs.

Abstract: A solvent-type gravure ink for a laminate according to the present invention contains a pigment, a binder resin, an organic solvent, and water. The solvent-type gravure ink contains 80 to 100 mass % in total of a polyurethane resin and a vinyl chloride copolymer resin in 100 mass % of the binder resin, and the mass ratio of polyurethane resin to vinyl chloride copolymer resin is 95:5 to 40:60. The solvent-type gravure ink contains 1 to 50 mass % of a structural unit derived from a polyether in 100 mass % of the polyurethane resin. The solvent-type gravure ink contains 0.1 to 15 mass % of a glycol ether-based organic solvent serving as the organic solvent and 0.1 to 5 mass % of the water in 100 mass % of the gravure ink.

Abstract: The present invention relates to an oil-based printing ink varnish comprising a polyurethane prepared using a polymeric polyol and a polyisocyanate as the main structural components, wherein the polyurethane is synthesized using, as a chain extender, a polyfunctional amine which contains at least one secondary amino group in each molecule and in which the total of the number of primary amino groups and the number of secondary amino groups is 3 or more per molecule. The present invention is able to provide a printing ink varnish containing a non-aromatic organic solvent and having excellent laminate strength, blocking resistance, dot reproducibility and plate clogging resistance, as well as a laminate ink containing the varnish.

Abstract: An alcohol-based printing ink composition comprising: a polyurethane urea resin (D) that is obtained by a reaction of polyol (A), diisocyanate (B), and a chain extender (C); a coloring agent (E); and a medium comprising an alcohol (F) and water, wherein the polyol (A) contains polyether polyol (A1) and polyester polyol (A2), and the medium comprises 75% by weight or more of alcohol (F).

Abstract: The present invention relates to an oil-based printing ink varnish comprising a polyurethane prepared using a polymeric polyol and a polyisocyanate as the main structural components, wherein the polyurethane is synthesized using, as a chain extender, a polyfunctional amine which contains at least one secondary amino group in each molecule and in which the total of the number of primary amino groups and the number of secondary amino groups is 3 or more per molecule. The present invention is able to provide a printing ink varnish containing a non-aromatic organic solvent and having excellent laminate strength, blocking resistance, dot reproducibility and plate clogging resistance, as well as a laminate ink containing the varnish.

Abstract: The present invention relates to an alcohol-based printing ink composition, comprising a colorant (E), a medium and a polyurethane urea resin (D) obtained by reacting a polyol (A), a diisocyanate (B) and a chain extender (C), wherein the polyol (A) comprises a polyester polyol (A0) having a repeating unit derived from a saturated hydroxycarboxylic acid having a side chain, and the medium comprises an alcohol (F), wherein the proportion of the alcohol (F) is at least 50% by weight relative to a value of 100% by weight for the total medium. Accordingly, the invention provides a printing ink comprising an alcohol having minimal environmental impact as the main component of the ink medium, the ink exhibiting excellent colorant dispersibility and storage stability, and having excellent re-solubility during long runs.

Abstract: An alcohol-based printing ink composition comprising: a polyurethane urea resin (D) that is obtained by a reaction of polyol (A), diisocyanate (B), and a chain extender (C); a coloring agent (E); and a medium comprising an alcohol (F) and water, wherein the polyol (A) contains polyether polyol (A1) and polyester polyol (A2), and the medium comprises 75% by weight or more of alcohol (F).

Abstract: A material for organic electroluminescent elements which comprises a copolymer comprising; units each comprising a main chain having a trivalent unconjugated organic residue and a monovalent organic residue bonded to the main chain through a structure comprising two or more groups conjugately bonded to each other; and units each having an amino group.