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Printing ink for colored steel sheet and preparation method for printing ink

A color steel plate and ink technology, applied in ink, applications, household utensils, etc., can solve the problems of low surface hardness, slow drying speed, scratches, etc., and achieve the effect of uniform color, avoiding scratches, and high surface hardness

Inactive Publication Date: 2016-04-13
NIPPON PAINT IND COATINGS SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the inks used in the domestic coil steel production line are relatively uniform in terms of application objects, and are produced and provided by the manufacturers in a traditional way. They are not targeted, not only lack of inks for color steel plates, but also slow drying speed and low surface hardness. high price
Using traditional inks, different color picture steel production lines may be scratched by the turning roller, or have problems affecting production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0061] Another embodiment of the present invention also provides a method for preparing ink for colored steel plates, comprising the following steps: mixing the following components: 30-40 parts by weight of saturated polyester resin, 0-5 parts by weight of amino resin, 20-30 parts by weight of solvent Parts by weight, 0.7-5 parts by weight of additives, 35-45 parts by weight of pigments and fillers, premixed, sanded and diluted;

[0062] The auxiliary agent includes: 0.5-2.5 parts by weight of dispersant; 0.1-1.0 parts by weight of defoamer; 0.1-1.0 parts by weight of leveling agent; 0-0.5 parts by weight of anti-settling agent;

[0063] Among them, the premixing step: mix 30-40 parts by weight of saturated polyester resin, 0.5-2.5 parts by weight of dispersant, 35-45 parts by weight of pigment and filler, and 20-30 parts by weight of solvent; The homogeneous material is ground to a fineness of ≤10 μm, and then filtered to obtain a premix; thinning step: add the remaining sat...

Embodiment 1

[0070] Embodiment 1: white ink preparation

[0071] Preparation of Saturated Polyester Resin:

[0072] Step 1: In the reactor that stirring rod, thermometer, reflux condenser, water separator are housed, add the neopentyl glycol of 115.5g, the trimethylolpropane of 30g, the pentaerythritol of 17.5g, the hexanediol of 35g , 58.5g of adipic acid, 81.5g of 1,4 cyclohexanedicarboxylic acid, 140g of isophthalic acid, began to heat up under the protection of inert gases such as nitrogen or carbon dioxide, when the temperature of the reactor reached 140 degrees Start stirring, then add 1.2g of dibutyltin dilaurate, control the temperature of the material in the reaction kettle at 240-250°C, and react for 8 hours;

[0073] Step 2: Add 185g of xylene into the reactor, take a sample every 30 minutes, and test the acid value until the acid value of the material <3KOHmg / g is the end of the reaction;

[0074] Step 3: Cool down the reaction kettle to 120° C., add 10 g of trimethylbenzene ...

Embodiment 2

[0079] Embodiment 2: preparation of red ink

[0080] Preparation of saturated polyester resin: with embodiment 1.

[0081] Preparation of red ink includes the following steps:

[0082] Premixing step: 30g saturated above-mentioned saturated polyester resin, 1.3g dispersant, 35g iron oxide red, 15g cyclohexanone, 3g dibasic acid ester, 8g trimethylbenzene solvent oil (S-100# solvent oil) are added to In another container, mix evenly with a disperser;

[0083] Sanding step: grind the material through a sand mill to a fineness of ≤10 μm, and obtain a premix after filtering;

[0084] Thinning step: Add 0.1g of defoamer and 0.1g of leveling agent to the above premix, disperse evenly with a disperser, and adjust the viscosity to 120s or 510mPa.s with Ford cup 4# to obtain red ink.

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Abstract

The invention discloses a printing ink for a colored steel sheet. The printing ink comprises the following components in parts by weight: 30-40 parts of saturated polyester resin, 0-5 parts of amino resin, 20-30 parts of a solvent and 35-45 parts of pigment filler. The invention further provides a preparation method for the printing ink for the colored steel sheet. According to the preparation method, the printing ink is prepared by premixing the component in parts by weight, sanding and diluting. The printing ink for the colored steel sheet has the advantage of ultra-high drying speed; the thickness of a film is 1 micron; under the room temperature, coating of a varnish can be directly performed after 5 seconds of the coating of the printing ink; the printing ink has the characteristics of uniform color and high surface hardness, and the problem that coated printing ink is scratched when passing a turning roll in a production line is avoided.

Description

technical field [0001] The invention relates to the technical field of ink and its preparation, in particular to an ink used for color steel plates and a preparation method thereof. Background technique [0002] Ink is a uniform mixture composed of colored bodies (such as pigments, dyes, etc.), linking materials, filling (filling) materials, additional materials, etc., which can be printed and attached to the printed body after drying; it can be colored and has A paste-like adhesive with certain fluidity. Therefore, color (hue), rheological properties (thickness, fluidity) and drying properties are the three most important properties of inks. There are many types of inks, and their physical properties are also different. Some are very thick and sticky, and some are very thin. [0003] With the continuous progress of the printing industry, ink, as a printing material with high printing reproducibility, is more favored by the market due to its good adaptability in the printi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/104
CPCC09D11/104
Inventor 唐铭徽永田隆博濑田努田昕韩华
Owner NIPPON PAINT IND COATINGS SHANGHAI