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Low-foam organic pigment color paste used for internal dyeing of decorative raw paper and preparation method thereof

A technology of organic pigments and colorants, applied in fiber raw material processing, paper, papermaking, etc., can solve problems such as foam, and achieve the effect of simplified operation process, good low foam effect and good rheological performance

Inactive Publication Date: 2018-02-06
ZHEJIANG NAMEI MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems, a low-foaming organic pigment color paste for internal dyeing of decorative raw paper pulp and its preparation method are proposed to solve the foam problem caused by adding pigment color paste, dispersant, etc. in the paper production process. When preparing the pigment color paste Use low-foaming dispersant to disperse the pigment, and greatly reduce the foam in the color paste and during the use of the color paste under the premise of ensuring the stability of the color paste

Method used

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  • Low-foam organic pigment color paste used for internal dyeing of decorative raw paper and preparation method thereof
  • Low-foam organic pigment color paste used for internal dyeing of decorative raw paper and preparation method thereof

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Embodiment Construction

[0022] The formula of the embodiment of the invention is referring to Table 1;

[0023] Table 1 (unit: parts by weight)

[0024]

[0025] In each embodiment, ethylene glycol was used as the solubilizing and moisturizing agent; the wetting and dispersing agent was sodium naphthalene sulfonate; the bactericide was a mixture of commercially available isothiazolinone and benzisothiazolinone.

[0026] For organic pigments, phthalocyanine blue is used in embodiment 1 and embodiment 2; phthalocyanine green is used in embodiment 3; quinacridone red is used in embodiment 4; monoazo flavonoid is used in embodiment 5.

[0027] According to the formula in Table 1, prepare described low-foaming organic pigment color paste, comprise the following steps successively:

[0028] (1) Weigh the solubilizing moisturizer, low-foaming dispersant and deionized water, and put them into the container;

[0029] (2) Add the organic pigment into the mixed solution obtained in step (1), disperse at a ...

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Abstract

The invention provides low-foam organic pigment color paste used for internal dyeing of decorative raw paper, belonging to the technical field of papermaking. The low-foam organic pigment color pasteused for internal dyeing of decorative raw paper is prepared from the following materials in parts by weight: 25-34 parts of organic pigment, 5-10 parts of a low-foam dispersing agent, 5-10 parts of ahydrotropy humectant, 0.1-0.3 part of a bactericide and 44.7-64.9 parts of deionized water. The invention further discloses a preparation method of the low-foam organic pigment color paste used for internal dyeing of the decorative raw paper. The method solves the problem of easy occurrence of foam during the production of internal dyeing of paper, the prepared color paste is uniform and steady,the rheological property of the color paste is good, and a good low-foam effect can be realized.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a low-foaming organic pigment color paste for internal dyeing of decorative raw paper pulp and a preparation method thereof. Background technique [0002] The purpose of dyeing is to produce colored paper. For example, colored writing paper, advertising paper, slogan paper, etc. must be dyed. The dyeing methods of paper are divided into: pulp internal dyeing, calender dyeing, dipping dyeing, coating dyeing. In-slurry dyeing is a more commonly used dyeing method, and organic pigments are usually used, because of their high tinting strength, the particles are easy to grind and disperse, not easy to precipitate, and the colors are brighter. Dispersant is a kind of surface active agent with two opposite properties of lipophilicity and hydrophilicity at the same time in the molecule. It can uniformly disperse inorganic substances that are difficult to dissolve in liquid, solid a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/28D21H21/36D21H21/00
Inventor 豆莞莞李锐张涛何贵平赵磊
Owner ZHEJIANG NAMEI MATERIAL TECH
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