Ink composition

Patent metadata

Field	Value
Publication number	US-9822268-B2
Application number	US-201514928805-A
Country	US
Kind code	B2
Filing date	Oct 30, 2015
Priority date	Nov 10, 2014
Publication date	Nov 21, 2017
Grant date	Nov 21, 2017

Abstract

There is provided an ink composition including: a predetermined dye (C-1); a dye (C-2) containing at least one of C.I. Direct Blues 86 and 199; an alkylene oxide adduct of an acetylene glycol having a main chain of 12 or more carbon atoms; an acetylene glycol having a main chain of 10 or more carbon atoms; and a polyoxyalkylene alkyl ether, in which the content ratio A of the dye (C-1) and the dye (C-2) (the dye (C-1):the dye (C-2)) is 7:3 to 9.5:0.5, and the content of the dye (C-1) is 2.0 mass % to 5.0 mass %.

First claim

What is claimed is:

1. An ink composition comprising:
a dye (C-1) represented by Formula (C-1) below;
a dye (C-2) including at least one of C.I. Direct Blues 86 and 199;
an alkylene oxide adduct of an acetylene glycol having a main chain of 12 or more carbon atoms;
an acetylene glycol having a main chain of 10 or more carbon atoms; and
a polyoxyalkylene alkyl ether,
wherein the content ratio A of the dye (C-1) and the dye (C-2) (the dye (C-1):the dye (C-2)) is 7:3 to 9.5:0.5, and
the content of the dye (C-1) is 2.0 mass % to 5.0 mass %,

in Formula (C-1),
R 2 , R 3 , R 6 , R 7 , R 10 , R 11 , R 14 , and R 15 each independently represent a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an aralkyl group, an aryl group, a heterocyclic group, a cyano group, a hydroxyl group, a nitro group, an amino group, an alkylamino group, an alkoxy group, an aryloxy group, an amide group, an arylamino group, a ureido group, a sulfamoylamino group, an alkylthio group, an arylthio group, an alkoxycarbonylamino group, a sulfonamide group, a carbamoyl group, a sulfamoyl group, an alkoxycarbonyl group, a heterocyclic oxy group, an azo group, an acyloxy group, a carbamoyloxy group, a silyloxy group, an aryloxycarbonyl group, an aryloxycarbonylamino group, an imide group, a heterocyclic thio group, a phosphoryl group, an acyl group, or an ionic hydrophilic group, and these groups may further have a substituent;
Z 1 , Z 2 , Z 3 , and Z 4 each independently represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, and at least one of Z 1 , Z 2 , Z 3 , and Z 4 has an ionic hydrophilic group as a substituent;
l, m, n, p, q 1 , q 2 , q 3 , and q 4 each independently represent 1 or 2; and
M 1 represents a hydrogen atom, a metal element, a metal oxide, a metal hydroxide, or a metal halide.

2. The ink composition according to claim 1 ,
wherein the content of the dye (C-2) is 0.10 mass % to 1.0 mass %.

3. The ink composition according to claim 1 , comprising a dye (C-3) represented by Formula (C-3) below,
wherein the content of the dye (C-3) is 0.50 mass % to 1.5 mass %,

in Formula (C-3),
R 1 , R 4 , R 5 , R 8 , R 9 , R 12 , R 13 , and R 16 each independently represent a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an aralkyl group, an aryl group, a heterocyclic group, a cyano group, a hydroxyl group, a nitro group, an amino group, an alkylamino group, an alkoxy group, an aryloxy group, an amide group, an arylamino group, a ureido group, a sulfamoylamino group, an alkylthio group, an arylthio group, an alkoxycarbonylamino group, a sulfonamide group, a carbamoyl group, a sulfamoyl group, an alkoxycarbonyl group, a heterocyclic oxy group, an azo group, an acyloxy group, a carbamoyloxy group, a silyloxy group, an aryloxycarbonyl group, an aryloxycarbonylamino group, an imide group, a heterocyclic thio group, a phosphoryl group, an acyl group, or an ionic hydrophilic group, and these groups may further have a substituent;
Z 5 , Z 6 , Z 7 , and Z 8 each independently represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, and at least one of Z 5 , Z 6 , Z 7 , and Z 8 has an ionic hydrophilic group as a substituent;
t, u, v, w, q 5 , q 6 , q 7 , and q 8 each independently represent 1 or 2; and
M 2 represents a hydrogen atom, a metal element, a metal oxide, a metal hydroxide, or a metal halide.

4. The ink composition according to claim 1 , comprising triethylene glycol alkyl ether.

5. The ink composition according to claim 1 ,
wherein the dynamic contact angle of the composition to a silicon wafer is 24° or lower at 100 msec after dropping, and is 9° or lower at 5,100 msec after dropping.

6. The ink composition according to claim 4 ,
wherein the mass ratio of the triethylene glycol alkyl ether to the polyoxyalkylene alkyl ether is 2 or more.

7. The ink composition according to claim 1 ,
wherein the content of the polyoxyalkylene alkyl ether is 1.0 mass % to 5.0 mass %.

8. The ink composition according to claim 4 ,
wherein the content of the triethylene glycol alkyl ether is 3.0 mass % to 15 mass %.

9. The ink composition according to claim 4 ,
wherein the triethylene glycol alkyl ether includes triethylene glycol monobutyl ether.

Assignees

• Seiko Epson Corp

Inventors

• Ohori Hiromi
• Teramoto Ryosuke
• Miyake Yuho

Classifications

• C09B47/0675

  having oxygen or sulfur linked directly to the skeleton · CPC title

• C09D11/40

  Ink-sets specially adapted for multi-colour inkjet printing · CPC title

• C09D11/38

  characterised by non-macromolecular additives other than solvents, pigments or dyes · CPC title

• C09B67/0035

  Mixtures of phthalocyanines · CPC title

• C09D11/328 Primary

  characterised by dyes · CPC title