Coloring material and method for producing the same

Patent metadata

Field	Value
Publication number	US-9708244-B2
Application number	US-201214436308-A
Country	US
Kind code	B2
Filing date	Oct 18, 2012
Priority date	Oct 18, 2012
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

The present invention is to provide a color material with excellent dyeing property and excellent heat resistance, and a method for producing the color material, which is able to obtain the color material with high purity and at high yield. Disclosed is a color material represented by the following general formula (I):

(symbols in the general formula (I) are as described in the Description.)

First claim

The invention claimed is:

1. A color material represented by the following general formula (I):

wherein A is an “a”-valent organic group in which a carbon atom directly bound to N has no π bond, and the organic group is a cyclic aliphatic hydrocarbon group having a saturated aliphatic hydrocarbon group at least at a terminal position directly bound to N, and O, S, N can be contained in a carbon chain of the organic group; B − is a monovalent organic anion having a sulfonate group (—SO 3 − group) and a plurality of B − s can be the same or different; each of R 1 to R 5 is independently a hydrogen atom, an alkyl group which can have a substituent group, or an aryl group which can have a substituent group; R 2 and R 3 can be bound to form a ring structure, and/or R 4 and R 5 can be bound to form a ring structure; Ar 1 is a divalent polycyclic aromatic group which can have a substituent group; a plurality of R 1 s can be the same or different; a plurality of R 2 s can be the same or different; a plurality of R 3 s can be the same or different; a plurality of R 4 s can be the same or different; a plurality of R 5 s can be the same or different; and a plurality of Ar 1 s can be the same or different; and
wherein “a” is an integer of 2 or more; “b” is 0 or 1 and there is no bond when “b” is 0; and a plurality of “b”s can be the same or different.

2. The color material according to claim 1 , wherein the organic anion is an anion represented by the following general formula (II):
Ar 2 SO 3 − ]  General Formula (II)

wherein Ar 2 is a monovalent aromatic group which can have a substituent group.

3. A method for producing the color material represented by general formula (I) of claim 1 , the method comprising:
a step of carrying out a condensation reaction between a compound represented by the following general formula (A) and a compound represented by the following general formula (B) to produce the general formula (I),

wherein A is an “a”-valent organic group in which a carbon atom directly bound to N has no πbond, and the organic group is a cyclic aliphatic hydrocarbon group having a saturated aliphatic hydrocarbon group at least at a terminal position directly bound to N, and O, S, N can be contained in a carbon chain of the organic group; B − is a monovalent organic anion having a sulfonate group (—SO 3 − group) and a plurality of B − s can be the same or different; each of R 1 to R 5 is independently a hydrogen atom, an alkyl group which can have a substituent group, or an aryl group which can have a substituent group; R 2 and R 3 can be bound to form a ring structure, and/or R 4 and R 5 can be bound to form a ring structure; Ar 1 is a divalent polycyclic aromatic group which can have a substituent group; Ar 1′ is a monovalent polycyclic aromatic group in which a hydrogen is a bound to Ar 1 ; a plurality of R 1 s can be the same or different; a plurality of R 2 s can be the same or different; a plurality of R 3 s can be the same or different; a plurality of R 4 s can be the same or different; a plurality of R 5 s can be the same or different; a plurality of Ar 1 s can be the same or different; a plurality of Ar 1′ s can be the same or different; and
wherein “a” is an integer of 2 or more; “b” is 0 or 1 and there is no bond when “b” is 0; and a plurality of “b”s can be the same or different.

Assignees

• Dainippon Printing Co Ltd
• Yamamoto Chemicals Inc

Inventors

• Okada Masato
• Kinoshita Satoshi

Classifications

• D06P1/42

  using basic dyes without azo groups · CPC title

• C07C211/58 Primary

  Naphthylamines; N-substituted derivatives thereof · CPC title

• C09B11/28 Primary

  Pyronines {; Xanthon, thioxanthon, selenoxanthan, telluroxanthon dyes} · CPC title