Ink composition

Patent metadata

Field	Value
Publication number	US-9914844-B2
Application number	US-201514928745-A
Country	US
Kind code	B2
Filing date	Oct 30, 2015
Priority date	Nov 5, 2014
Publication date	Mar 13, 2018
Grant date	Mar 13, 2018

Abstract

There is provided an ink composition, including: a combination of specific dyes, in which the dynamic contact angle of the ink to a silicon wafer is 24° or lower at 100 msec after dropping, and is 9° or lower at 5,100 msec after dropping.

First claim

What is claimed is:

1. An ink composition, comprising:
a dye (Y-1) represented by a formula below;
a dye (Y-2) selected from the group consisting of C.I. Direct Yellows 86, 132, and 142; and
a polyoxyakylene alkyl ether,
wherein a content ratio A of the dye (Y-1) and the dye (Y-2) (the dye (Y-1):the dye (Y-2)) is 7:3 to 9.5:0.5 ,
a content of the dye (Y-1) is 2.0 mass % to 5.0 mass %, and
a 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,

wherein in Formula (Y-1), R 4 represents a substituent, R 5 represents —OR 6 or —NHR 7 , each of R 6 and R 7 represents a hydrogen atom or a substituent, X 3 represents a divalent linking group, n0 is 0 or 1, Ar 3 represents a divalent heterocyclic group, and Ar 4 represents an alkyl group, an aryl group, or a triazine group.

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

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

wherein in Formula (Y-3), R 13 's each independently represent a hydrogen atom or a substituent, R 14 's each independently represent —OR 16 , —NHR 17 , or a cyano group, each of R 16 and R 17 represents a hydrogen atom or a substituent, X 1 represents a substituted or unsubstituted aryl group or a substituted or unsubstituted triazine group, n6 is 0 or 1, Ar 1 's each independently represent a divalent heterocyclic group, and Ar 2 's each independently represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted triazine group.

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

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

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

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

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

9. An ink composition, comprising:
a dye (Y-1) represented by a formula below;
a dye (Y-2) selected from the group consisting of C.I. Direct Yellows 86, 132, and 142;
an alkylene oxide adduct of an acetylene glycol having a main chain of 12 or more carbon atoms; and
an acetylene glycol having a main chain of 10 or more carbon atoms,
wherein a content ratio A of the dye (Y-1) and the dye (Y-2)(Y-1):the dye (y-2)is 7:3to 9.5:0.5,
acontent of the dye (Y-1) is 2.0 mass %, and
a dynamic contact angle of the composition to a silcon wafer is 24° or lower at 100 msec after dropping, and is 9° or lower at 5,100 msec dropping,

wherein in Formula (Y-1), R 4 represents a substituent, R 5 represents —OR 6 or —NHR 7 , each of R 6 and R 7 represents a hydrgen atom or a substituent, X 3 represents a divalent linking group, n0 is 0 or 1, Ar 3 represents a divalent heterocyclic group, and Ar 4 represents an alkyl group, an aryl group, or a triazine group.

Assignees

• Seiko Epson Corp

Inventors

• Teramoto Ryosuke
• Ohori Hiromi
• Miyake Yuho

Classifications

• C09D11/328 Primary

  characterised by dyes · CPC title

• C09D11/38

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