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High-gloss anti-scratch waterborne glazing oil and preparation method thereof

A water-based varnish, high-gloss technology, applied in coatings, paper coatings, textiles and papermaking, etc., can solve the problems of high hardness, easy to be scratched, poor toughness, etc., to achieve high gloss, good adhesion, The effect of improving flexibility

Active Publication Date: 2016-03-09
洋紫荆油墨(中山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high Tg (glass transition temperature) value of the acrylic emulsion used in the high-gloss water-based varnish formula, the coating after film formation has high hardness, poor toughness, and is easy to be scratched

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The high-gloss anti-scratch water-based varnish of the present embodiment comprises 50 parts of styrene-acrylic emulsion, 10 parts of acrylic modified polyurethane emulsion, 10 parts of alkali-soluble acrylic resin, 0.1 part of defoamer, and 10 parts of wax emulsion according to parts by weight. , 4 parts of wetting agent, 0.5 parts of slip agent, 8 parts of lauryl alcohol ester and 7.5 parts of water.

[0021] Among them, the acrylic modified polyurethane emulsion is prepared by the following method: add 200g of polyethylene glycol (PEG2000) to a 500mL four-neck flask equipped with a stirrer, a condenser, and a thermometer, heat it up to 120°C to melt it, and put it under a vacuum of 10mmHg. Dehydrate under vacuum for 2 hours, then lower the temperature to 80°C, stop vacuuming, blow nitrogen, add 90g of isophorone diisocyanate dropwise, after constant temperature reaction for 3 hours, add 10g of dimethylolpropionic acid and 0.1g of dibutyltin dilaurate to continue Reac...

Embodiment 2

[0024] The high-gloss anti-scratch water-based varnish of the present embodiment comprises 30 parts of styrene-acrylic emulsion, 30 parts of acrylic modified polyurethane emulsion, 10 parts of alkali-soluble acrylic resin, 0.1 part of defoamer, and 10 parts of wax emulsion according to parts by weight. , 4 parts of wetting agent, 0.5 parts of slip agent, 6 parts of lauryl alcohol ester and 7.5 parts of water.

[0025] Among them, the acrylic modified polyurethane emulsion is prepared by the following method: add 250g of polyethylene glycol (PEG2000) to a 500mL four-neck flask equipped with a stirrer, a condenser, and a thermometer, heat up to 120°C to melt it, and place it under a vacuum of 10mmHg. Under vacuum dehydration for 3 hours, then lower the temperature to 80°C, stop vacuuming, blow nitrogen, add 110g of isophorone diisocyanate dropwise, after constant temperature reaction for 3 hours, add 15g of dimethylolpropionic acid and 1.3g of dibutyltin dilaurate to continue Re...

Embodiment 3

[0028] The high-gloss anti-scratch water-based varnish of the present embodiment comprises 20 parts of styrene-acrylic emulsion, 40 parts of acrylic modified polyurethane emulsion, 10 parts of alkali-soluble acrylic resin, 0.1 part of defoamer, and 10 parts of wax emulsion according to parts by weight. , 4 parts of wetting agent, 0.5 parts of slip agent, 4 parts of lauryl alcohol ester and 7.5 parts of water.

[0029] Among them, the acrylic-modified polyurethane emulsion is prepared by the following method: add 230g of polyethylene glycol (PEG2000) to a 500mL four-neck flask equipped with a stirrer, a condenser, and a thermometer, heat up to 120°C to melt it, and put it under a vacuum of 10mmHg. Dehydrate under vacuum for 2.5 hours, then lower the temperature to 80°C, stop vacuuming, blow nitrogen, add 100g of isophorone diisocyanate dropwise, after constant temperature reaction for 3 hours, add 12g of dimethylolpropionic acid and 0.8g of dibutyltin dilaurate Continue the rea...

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PUM

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Abstract

The present invention discloses high-gloss anti-scratch waterborne glazing oil. The waterborne glazing oil comprises the following materials in parts by weight: 30-50 parts of styrene-acrylate emulsion, 10-60 parts of acrylic-modified polyurethane emulsion, 5-15 parts of alkali-soluble acrylic resin, 0.1-0.3 parts of a defoamer, 8-12 parts of wax emulsion, 3-5 parts of a wetting agent, 0.3-1 part of a slip agent, 4-8 parts of 2,2,4-Trimethyl-1,3-pentanediol monoisobutyrate and 5-10 parts of water. The acrylic-modified polyurethane emulsion is prepared from the following components in parts by weight: 200-250 parts of polyethylene glycol, 90-110 parts of isophorone diisocyanate, 10-15 parts of dimethylol propionic acid, 0.1-0.3 parts of dibutyltin dilaurate, 10-15 parts of triethylamine, 4-8 parts of ethylenediamine, 15-30 parts of methyl methacrylate, 45-95 parts of butyl acrylate and 0.4-0.8 parts of azobisisobutyronitrile. The present invention also discloses a preparation method of the waterborne glazing oil. According to the method disclosed by the present invention, the acrylic-modified polyurethane emulsion is introduced into a waterborne glazing oil formula, so that after being formed, a film of the waterborne glazing oil has high gloss, excellent scratch resistance, excellent seam breaking resistance and good printability.

Description

technical field [0001] The invention belongs to the field of polymer materials, in particular to a high-gloss and anti-scratch water-based varnish and a preparation method thereof. Background technique [0002] Water-based glazing and UV glazing are two commonly used surface treatment processes in the field of printing and packaging. With the increasingly strict control of the VOC content of coatings in China in recent years, water-based varnishes have become the mainstream of printing varnishes. Water-based varnish refers to an environmentally friendly coating product that uses water as a carrier and is coated on-line with a printing machine or off-line with a glazing machine to increase the gloss, water resistance, and abrasion resistance of paper-based printed matter. At present, coating and glazing technology has been adopted by more and more printing manufacturers, which has led to a continuous increase in the demand for varnishes. Due to the characteristics of non-to...

Claims

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Application Information

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IPC IPC(8): D21H21/14D21H19/20D21H19/18D21H19/24C08F283/00
CPCC08F283/006D21H19/18D21H19/20D21H19/24D21H21/14C08F220/1804
Inventor 李永超许平杨爱军
Owner 洋紫荆油墨(中山)有限公司
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