Ink composition for inkjet printing
First Claim
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1. An ink composition for ink-jet printing consisting of:
- a pigment in an amount of 0.1 to 15 mass%,a binder resin in an amount of 0.5 to 15 mass%,a pigment dispersant in an amount of 0.1 to 15 mass%, anda solvent in an amount of 60 to 99 mass%, wherein,the solvent consists of;
(i) γ
-butyrolactone in an amount of 1 to 45 mass%, and(ii) dipropylene glycol monoalkyl ether in an amount of 15 to 95 mass%,the binder resin is a vinyl chloride copolymer resin, andthe pigment dispersant is a polyester-polyamide resin having two or more amido groups in the one molecule thereof and a number average molecular weight of 2,000 to 15,000.
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Abstract
An ink composition for ink-jet printing does not cause clogging of nozzles of an ink-jet printer during printing, thereby providing a print of desired printing quality; which ensures an appropriate drying rate of printed images; and which attains excellent color development. The ink composition for ink-jet printing, containing a pigment, a binder resin, a pigment dispersant, and a solvent, wherein the solvent is formed of (1) at least one glycol ether and at least one of a lactone compound and 2-pyrrolidone, or (2) at least one glycol ether acetate and at least one of cyclohexane and isophorone.
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Citations
4 Claims
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1. An ink composition for ink-jet printing consisting of:
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a pigment in an amount of 0.1 to 15 mass%, a binder resin in an amount of 0.5 to 15 mass%, a pigment dispersant in an amount of 0.1 to 15 mass%, and a solvent in an amount of 60 to 99 mass%, wherein, the solvent consists of; (i) γ
-butyrolactone in an amount of 1 to 45 mass%, and(ii) dipropylene glycol monoalkyl ether in an amount of 15 to 95 mass%, the binder resin is a vinyl chloride copolymer resin, and the pigment dispersant is a polyester-polyamide resin having two or more amido groups in the one molecule thereof and a number average molecular weight of 2,000 to 15,000. - View Dependent Claims (2, 3, 4)
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Specification
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Current AssigneeDAI Nippon Toryo Company Limited
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Original AssigneeDAI Nippon Toryo Company Limited
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InventorsShiotani, Toshihiko, Sugawa, Tetsuo, Kotera, Takehiro, Hayashi, Kenji, Hayashi, Hiroki, Mizutaki, Yusuke, Kuwahara, Mikio, Sano, Shuji, Shirota, Tsuneo, Nakatsu, Katsutaka
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Primary Examiner(s)LEE, DORIS L
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Application NumberUS12/836,005Publication NumberTime in Patent Office1,224 DaysField of Search523/160, 523/161US Class Current524/107CPC Class CodesC09D 11/30 Inkjet printing inks
