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Thixotropic varnish and preparation method thereof

A technology of varnish and glyceryl stearate, which is applied in the field of thixotropic varnish and its preparation, can solve the problems of insufficient pigment dispersibility, etc., and achieve fast solution polymerization rate, high conversion rate, and good pigment dispersibility Effect

Inactive Publication Date: 2015-06-03
INTEGRATION TECH SERVICE CENT OF ZIBO ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the dispersibility of the varnish on the market is not good enough for the pigments. If you want to print decals with good uniformity, you must improve the preparation method of the varnish, so as to improve the performance of the varnish.

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0027] (Example is the description of the specific implementation of the present invention and the above-mentioned effect, wherein the components and component content involved must be specific substances and specific content, can not be a general concept and a range, and it is best to give each implementation Example ink effect (see above 1-6), so the following examples all need to be adjusted.)

[0028] The invention provides a thixotropic varnish, which comprises a resin solution of 15-20 mgKOH / g, a solvent of 95%-110% of the mass of the resin solution, a thickener of 2%-6% of the mass of the resin solution, and a resin solution of 70%-330% plasticizer by mass and 0.1%-3% defoamer by mass of resin solution; the thickener is glyceryl stearate; the plasticizer is dioctyl phthalate .

[0029] In the present embodiment, taking 100g resin solution as an example, the specific experimental data are as follows:

[0030] Acid value of resin solution (mgKOH / g) 15 15 18 ...

Embodiment 2

[0033] The difference from Example 1 is that the resin solution is an acrylic resin solution. In the acrylic resin solution, add a small amount of acrylic acid. Helps improve adhesion, hardness and gloss of coatings.

Embodiment 3

[0035] The difference from Examples 1 and 2 is that the solvent is a high boiling point solvent with dual properties of aromatic hydrocarbons and alicyclic hydrocarbons, SN (tetralin) is the main solvent, and esters and alcohols are secondary solvents. Experiments show that combining solvents can improve the thixotropy of varnishes.

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PUM

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Abstract

The invention relates to thixotropic varnish and a preparation method thereof. The thixotropic varnish comprises 15-20mg KOH / g of a resin solution, 95-110 wt% of a solvent based on the resin solution, 2-6 wt% of stearin based on the resin solution, 70-330 wt% of dioctyl phthalate based on the resin solution and 0.1-3 wt% of a defoamer based on the resin solution. The thixotropic varnish provided by the invention has the benefits that the thixotropic varnish is good in thixotropic performance; the ceramic burned is free of carbon black trace and good in adhesive force; the pigment dispersibility is good.

Description

technical field [0001] The invention belongs to the technical field of inks, and in particular relates to a thixotropic varnish used for decal printing in ceramics, glass and enamel industries and a preparation method thereof. Background technique [0002] Varnishes are mainly used for decal printing in the ceramics, glass and enamel industries. From the perspective of rheology, such varnishes are divided into flow type and thixotropy type. The former is a Newtonian fluid and is mainly suitable for screen printing; the latter is a non-Newtonian fluid and is mainly suitable for dot printing. [0003] Varnish is an organic polymer. Ink varnish is added to the pigment, and the pigment is fully mixed and evenly mixed by the ink press machine to ensure the uniformity of the printed decal paper, and then a solvent is added to adjust the thinness of the pigment, which is convenient for printing the decal paper and improving the drying speed of the decal paper, ensuring Paper qua...

Claims

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Application Information

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IPC IPC(8): C09D11/107C09D11/03
CPCC09D11/03C09D11/107
Inventor 张苗王丽虹张丽许宏民陶琳项海波
Owner INTEGRATION TECH SERVICE CENT OF ZIBO ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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