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-

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Example 1

[0020] The high-gloss and scratch-resistant water-based varnish of this embodiment, in parts by weight, includes 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 , 4 parts wetting agent, 0.5 part slip agent, 8 parts dodecyl alcohol ester and 7.5 parts water.

[0021] Among them, the acrylic modified polyurethane emulsion is prepared by the following method: add 200g polyethylene glycol (PEG2000) to a 500mL four-necked flask with a stirrer, a condenser and a thermometer, heat it up to 120°C to make it melt, and put it in a vacuum of 10mmHg. Dehydration under vacuum for 2 hours, then cooled to 80 °C, stopped vacuuming, passed nitrogen, and added 90 g of isophorone diisocyanate dropwise. After constant temperature reaction for 3 hours, 10 g of dimethylolpropionic acid and 0.1 g of dibutyltin dilaurate were added to continue. Re...

Example Embodiment

[0023] Example 2

[0024] The high-gloss and scratch-resistant water-based varnish of this embodiment, in parts by weight, includes 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 , 4 parts wetting agent, 0.5 part slip agent, 6 parts dodecyl alcohol ester and 7.5 parts water.

[0025] Wherein, the acrylic modified polyurethane emulsion is prepared by the following method: add 250g polyethylene glycol (PEG2000) to a 500mL four-necked flask with a stirrer, a condenser and a thermometer, heat it up to 120°C to make it melt, and put it in a vacuum of 10mmHg. Dehydration under vacuum for 3 hours, then cooling to 80°C, stop vacuuming, pass nitrogen, add 110g isophorone diisocyanate dropwise, after constant temperature reaction for 3 hours, add 15g dimethylolpropionic acid and 1.3g dibutyltin dilaurate to continue Reaction; measure the NCO value ev...

Example Embodiment

[0027] Example 3

[0028] The high-gloss and scratch-resistant water-based varnish of this embodiment, in parts by weight, includes 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 , 4 parts wetting agent, 0.5 part slip agent, 4 parts dodecyl alcohol ester and 7.5 parts water.

[0029] Wherein, the acrylic modified polyurethane emulsion is prepared by the following method: add 230g polyethylene glycol (PEG2000) to a 500mL four-necked flask with a stirrer, a condenser and a thermometer, heat it up to 120°C to make it melt, and put it in a vacuum of 10mmHg. Dehydration under vacuum for 2.5h, then cooling to 80℃, stop vacuuming, pass nitrogen, add 100g isophorone diisocyanate dropwise, after constant temperature reaction for 3h, add 12g dimethylolpropionic acid and 0.8g dibutyltin dilaurate Continue the reaction; measure the NCO value every 30mi...

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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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