Method for manufacturing yellow disperse dyes

A manufacturing method and technology of disperse dyes, which can be used in dyeing, textiles, papermaking, ketones, etc., can solve expensive and uneconomical problems, and achieve the effect of industrial production and excellent light fastness
CN102807769AInactive Publication Date: 2012-12-05NIPPON KAYAKU CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NIPPON KAYAKU CO LTD
Publication Date
2012-12-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for manufacturing yellow disperse dyes having excellent fastness to light, which is lowcost, simple and convenient, and can realize industrial production. The method for manufacturing yellow disperse dyes is used for manufacturing yellow disperse dyes containing more than 70 mass / % of a compound represented by the following Formula (2) and less than 30 mass% of a compound represented by the following Formula (3). The manufacturing method is characterized in that the nitryl of the compound represented by the following Formula (1) [in the formula, R represents an amino] is reduced into an amino group, and the amino group is reacted with 1,8-naphthalenedicarboxylic acid anhydride, then, the protecting group R of the amino is deprotected and forms a ring.
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Description

Technical field

[0001] The present invention relates to a method for producing yellow disperse dyes. More specifically, the present invention relates to a simple method for producing a yellow disperse dye excellent in light fastness. Background technique

[0002] In recent years, due to its excellent heat resistance and light resistance, the use of polyester fiber materials as interior materials for automobiles is increasing, and disperse dyes as their colorants have begun to require more excellent light fastness. In automotive interior applications as automotive seats, polyester fiber materials are glued to heat-resistant polyurethane foam. Therefore, it is not uncommon for seats to reach a high temperature of 80°C or higher. The harsher conditions are dyes with excellent light fastness at high temperature. The usual light fastness evaluation test is performed at a temperature of 63±3°C specified in JIS L0842, but for automotive interior applications, it is required to be able...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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