Preparation method and application of grinding and dispersing agent

A technology of dispersant and reactant, applied in the field of preparation of grinding dispersant, can solve the problems affecting the glossiness of finished paper surface characteristics, printing adaptability, large particle size distribution range, etc., and achieve the improvement of surface optical characteristics and printing performance, The effect of high dispersion efficiency

Inactive Publication Date: 2016-01-20
GOLD EAST PAPER JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, GCC is directly ground to make its particle size smaller. In order to obtain GCC with smaller particle size, it often needs longer grinding time or increased grinding power to achieve it. However, although the par...

Method used

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  • Preparation method and application of grinding and dispersing agent
  • Preparation method and application of grinding and dispersing agent
  • Preparation method and application of grinding and dispersing agent

Examples

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preparation example Construction

[0018] see figure 1 , figure 1 It is a flowchart of a preparation method of a grinding dispersant provided by an embodiment of the present invention. As shown in the figure, the preparation method of a grinding dispersant of the embodiment of the present invention includes the following steps:

[0019] S101: Dissolving 45-85 parts of olefin sulfonate and 30-50 parts of methylene succinic acid in deionized water to form a mixed solution.

[0020] In the embodiment of the present invention, olefin sulfonate substances and methylene succinic acid are used as the main reacting substances. In theory, all olefin sulfonate substances can achieve the purpose of the present invention. However, as a preferred implementation of the present invention, the olefin sulfonate is preferably an alkali metal olefin sulfonate, for example, sodium allyl sulfonate, potassium allyl sulfonate, vinyl sulfonate Sodium acid and potassium vinylsulfonate, etc., of course, are not limited thereto. As th...

Embodiment 1

[0039] Weigh 30 parts of methylene succinic acid, mix 15 parts of sodium propenyl sulfonate, dissolve with deionized water, slowly drop into 5 parts of (methacrylic acid, styrene, potassium persulfate mixed solution), keep the solution temperature at At 96°C, react for 2 hours to prepare Dispersant A.

Embodiment 2

[0041]Weigh 22 parts of methylene succinic acid, mix 10 parts of sodium propenyl sulfonate, dissolve with deionized water, slowly drop into 8 parts of (mixed solution of acrylic acid and styrene), keep the solution temperature at 85°C, and react for 1.5 h, make dispersant B.

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Abstract

The invention discloses a preparation method and application of a grinding and dispersing agent. The preparation method of the grinding and dispersing agent comprises the following steps of dissolving 45 to 85 parts of olefin sulphosalts materials and 30 to 50 parts of itaconic acid into deionized water to form a mixed solution; warming the mixed solution to be 65 to 97 DEG C; dropwise adding a reactant into the mixed solution to react, wherein the reactant is at least one of methacrylic acid, styrene and potassium persulfate; adjusting pH of a reaction product to be 5.5 to 6.8 after fully reacting so as to obtain the grinding and dispersing agent. Through the method, the GCC grinding efficiency can be improved, the ground GCC grain size is smaller, and the granulometric distribution interval is narrower.

Description

technical field [0001] The invention relates to a preparation method and application of a grinding dispersant. Background technique [0002] Ground calcium carbonate (GCC) is widely used in the paper industry as a coating pigment. The quality indicators of GCC mainly include fluidity, particle size and particle size distribution characteristics, etc. Among them, the GCC particle size distribution (normal distribution diagram) affects the optical properties of its prepared coatings. A narrow particle size distribution range can improve the optical properties of the paint. Scattering ability enables coated paper to obtain higher whiteness, gloss and printing adaptability. [0003] Paper coating generally uses GCC with a smaller particle size, and generally the content of particles with a particle size ≤ 2 microns is > 50%. Usually, GCC is directly ground to make its particle size smaller. In order to obtain GCC with smaller particle size, it often needs longer grinding ti...

Claims

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Application Information

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IPC IPC(8): C08F228/02C08F220/06C08F212/08C09C1/02C09C3/10C09C3/04
Inventor 壮欢於旺盛刘春陈杰董郑伟闫培养
Owner GOLD EAST PAPER JIANGSU
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