Coloring material and method for producing the same

• US 9,708,244 B2
• Filed: 10/18/2012
• Issued: 07/18/2017
• Est. Priority Date: 10/18/2012
• Status: Active Grant

• Current Assignee: Dai Nippon Printing Company Limited, Yamamoto Chemicals, Inc.
• Original Assignee: Dai Nippon Printing Company Limited, Yamamoto Chemicals, Inc.
• Inventors: Kinoshita, Satoshi, Okada, Masato
• Primary Examiner(s): BROOKS, CLINTON A
• Application Number:
  US14/436,308
• Publication Number:
  US 20150353472A1
• Time in Patent Office: 1,734 Days
• Field of Search: None
• CPC Class Codes: C07C 211/58 Naphthylamines; N-substituted derivatives thereof
• CPC Class Codes: C09B 11/28 Pyronines ; Xanthon, thioxanthon, selenoxanthan, telluroxanthon dyes
• CPC Class Codes: D06P 1/42 using basic dyes without azo groups

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.)

Claims

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

2. The color material according to claim 1, wherein the organic anion is an anion represented by the following general formula (II):

Ar²SO₃⁻

] 

 

General Formula (II)

wherein Ar² 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),