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A kind of preparation method of water-based black natural dye inkjet printing ink

A natural dye and inkjet printing technology, applied in natural dyes, dyeing methods, azo dyes, etc., can solve the problems of natural dye inks such as lack of black color, poor stability, uneven color spectrum, etc., and achieve the effect of improving the level of clean production

Active Publication Date: 2018-08-07
SUZHOU UNIV
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to: provide a kind of preparation method of water-based black natural dye ink-jet printing ink, overcome the problem that existing natural dyes cannot be directly used in the preparation of ink-jet printing ink due to the deficiencies such as uneven chromatogram, poor stability, etc., through natural dye First, complex with iron ions to prepare black natural dye raw materials, and then further prepare black natural dye inkjet printing inks with excellent stability and printing performance, so as to solve the problem of lack of black in natural dye inks

Method used

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  • A kind of preparation method of water-based black natural dye inkjet printing ink

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preparation example Construction

[0020] The invention provides a kind of preparation method of water-based black natural dye ink-jet printing ink, comprising:

[0021] Step 1: preparation of black natural dye raw material;

[0022] In one embodiment, this step can be specifically performed as follows: respectively dissolving tannic acid and hematoxylin in an acidic aqueous solution with a pH value of 2 to 4 to prepare a dye solution with a concentration of 5 to 10% by mass, and mixing evenly. Under stirring, add ferrous sulfate solution with a mass percentage concentration of 5-10% dropwise within 1-2 hours, heat up to 50-90°C, and react at a constant temperature for 10-30 hours. After the reaction, salt out, filter, and dry to obtain black Natural dye raw material, wherein, the mass percentages of the three components in the reaction system are: 10-20% of tannic acid, 30-60% of hematoxylin, 20-60% of ferrous sulfate, and the tannic acid is extracted from Galla gall Obtained by extraction, and the hematoxyli...

Embodiment 1

[0028] The preparation method of water-based black natural dye inkjet printing ink comprises the following steps:

[0029] (1) Preparation of black natural dye raw material:

[0030] The mass percentages of the three reactants are: 15% of tannic acid, 45% of hematoxylin, and 40% of ferrous sulfate.

[0031] Dissolve tannic acid and hematoxylin in an acidic aqueous solution with a pH value of 3.2 to prepare a dye solution with a mass percentage concentration of 7%, and mix evenly; under stirring, add dropwise a mass percentage concentration of 8% within 1.5h. The ferrous sulfate solution was heated up to 75°C and reacted at constant temperature for 21 hours. After the reaction, salt out, filter and dry to obtain black natural dye raw materials.

[0032] (2) Preparation of water-based black natural dye inkjet printing ink:

[0033] The mass percentage of water-based black natural dye inkjet printing ink components is as follows:

[0034]

[0035]

[0036] Put each comp...

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Abstract

The invention discloses a preparation method of water-based black natural dye inkjet printing ink, which comprises the following steps: separately dissolving tannic acid and hematoxylin in an acidic aqueous solution to prepare a dye solution, mixing evenly, adding sulfuric acid dropwise under stirring Ferrous solution, heat up to 50-90°C, react at constant temperature for 10-30 hours, after the reaction, salt out, filter, and dry to obtain black natural dye raw materials; black natural dye raw materials, surfactants, hygroscopic cosolvents, rheological properties Regulators, preservatives, pH regulators and deionized water are added to the ball mill tank, then zirconia balls of the same quality are added, ground and dispersed on the ball mill, and the zirconia balls are filtered to obtain water-based black natural dye inkjet printing ink. The method can improve the clean production level of textile processing, and overcome the lack of black dye in natural dyes.

Description

technical field [0001] The invention belongs to the fields of textile printing and dyeing processing technology and textile chemical preparation technology, and relates to a preparation method of water-based black natural dye inkjet printing ink. Background technique [0002] Printing is a process in which dyes form patterns of different colors on fabrics. The conventional printing process has the disadvantages of lengthy process, high technical difficulty and complicated operation. Inkjet printing is to input the required pattern into the computer in digital form, after image processing, the computer controls the micro piezoelectric inkjet nozzle, and directly sprays the printing ink onto the fabric for printing. After processing, the printed high-precision Patterned textiles. Various patterns are printed. It can be seen that inkjet printing technology has the advantages of small footprint, less sewage discharge, short production cycle and single-piece production. It is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/34D06P5/30C09B61/00
CPCC09B61/00D06P1/34D06P5/30
Inventor 王祥荣薛袁
Owner SUZHOU UNIV
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