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Pigment violet preparing process

A preparation process, a technology for pigment violet, applied in the direction of organic dyes, diaryl/triarylmethane dyes, diaryl/triarylmethane dyes, etc., can solve the problem of the high cost of sodium tungstate and sodium molybdate, and the production of purple pigments. High cost, affecting the promotion and use of purple pigment products, etc., to achieve the effect of lower production costs and cheaper prices

Inactive Publication Date: 2006-05-17
吴江市横扇太湖化工有限公司
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Problems solved by technology

[0002] In the prior art, the preparation method of purple pigment is to use violet 5BN dye as raw material, and obtain after reacting with intermediate sodium tungstate and sodium molybdate, but the cost of sodium tungstate and sodium molybdate is very high, making the production cost of purple pigment Very high, affecting the promotion and use of purple pigment products

Method used

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Examples

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Embodiment Construction

[0019] A kind of preparation technology of pigment violet, it comprises the following steps:

[0020] (1), dissolving the dye; mix and dissolve the basic violet dye and water in the first container according to the weight ratio of 1:90-100, the dissolution temperature is controlled between 65-95 degrees Celsius, and the basic violet dye is mixed with water Finally, it needs to be stirred, and the stirring time is 25 minutes to 40 minutes.

[0021] (2), dissolving the intermediate copper sulfate; the copper sulfate whose volume is 1.4 times of the dyestuff is mixed and dissolved in the second container with water, and the weight ratio of copper sulfate and water is 1: 10~20; the dissolution temperature is controlled at Between 60 and 85 degrees Celsius, copper sulfate and water need to be stirred after mixing, and the stirring time is 20 minutes to 40 minutes.

[0022] (3), dissolving intermediate sodium sulfate and sodium yellow blood salt; mixing and dissolving sodium sulfat...

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Abstract

The preparation process of pigment violet includes the following steps: dissolving dye, dissolving intermediate copper sulfate, dissolving intermediate sodium sulfate and sodium ferrocyanide, mixing, rinsing in press filter, and discharging from press filter to obtain semi-solid pigment violet. The present invention uses cheap copper sulfate, sodium sulfate and sodium ferrocyanide as intermediates to react with dye, and has low production cost. The pigment violet may be used in various kinds of printing ink.

Description

technical field [0001] The invention relates to a preparation process of a pigment. Background technique [0002] In the prior art, the preparation method of purple pigment is to use violet 5BN dye as raw material, and obtain after reacting with intermediate sodium tungstate and sodium molybdate, but the cost of sodium tungstate and sodium molybdate is very high, making the production cost of purple pigment Very high, affecting the promotion and use of purple pigment products. Contents of the invention [0003] The purpose of the present invention is to provide a preparation process of a kind of pigment violet with low production cost. [0004] Technical scheme of the present invention is: a kind of preparation technology of pigment violet, it comprises the following steps: [0005] (1), dissolving the dye; mixing and dissolving the basic violet dye and water in the first container according to the weight ratio of 1:90~...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B11/10
Inventor 李东林
Owner 吴江市横扇太湖化工有限公司
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