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Water thinned polishing oil for offset line and its prepn

A water-based varnish and connecting technology, applied in the field of chemical coatings, can solve the problems of gloss, drying and wear resistance, and achieve the effect of strong transparency, simple production process and accelerated drying speed.

Inactive Publication Date: 2009-12-23
HUIZHOU KAIHUI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing in-line water-based varnishes in China have a certain gap in gloss, dryness, and wear resistance.

Method used

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  • Water thinned polishing oil for offset line and its prepn
  • Water thinned polishing oil for offset line and its prepn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1. Preparation of acrylate resin emulsion containing trifunctional monomer and N-hydroxyethylacrylamide:

[0022] Put 250g of deionized water, 95g of styrene, 50g of butyl acrylate, 10g of functional monomer trifunctional acrylate and N-hydroxyethyl acrylamide into the three-necked flask. 10g, potassium persulfate 1g, sodium bisulfite 1g, disodium hydrogen phosphate 1g, polyvinyl alcohol 0.5g. Then, the emulsion was synthesized by the seed emulsion polymerization method, and the temperature was adjusted to 80°C and the rotation speed was 1500rps / m to obtain a stable emulsion.

[0023] 2. Prepare in-line water-based varnish:

[0024] Take 50g of the prepared styrene-acrylate resin emulsion, 5g of solid acrylic acid resin aqueous solution, 20g of film-forming acrylic acid emulsion, 10g of polyethylene wax emulsion, 2g of water-based silicone leveling agent, and 2g of silicone disinfectant. Foam agent 1g, deionized water 12g. Add in the mixing tank successively, start t...

Embodiment 2

[0028] 1. Preparation of acrylate resin emulsion containing trifunctional monomer and N-hydroxyethylacrylamide:

[0029] Put 250g of deionized water, 125g of styrene, 80g of butyl acrylate, 20g of functional monomer trifunctional acrylate and N-hydroxyethyl acrylamide into the three-necked flask. 15g, potassium persulfate 3g, sodium bisulfite 3g, disodium hydrogen phosphate 3g, polyvinyl alcohol 1.5g. Then, the emulsion was synthesized by the seed emulsion polymerization method, and the temperature was adjusted to 120°C and the rotation speed was 2500rps / m to obtain a stable emulsion.

[0030] 2. Prepare in-line water-based varnish:

[0031] Take respectively 55g of the prepared styrene-acrylate resin emulsion, 15g of solid acrylic acid resin aqueous solution, 15g of film-forming acrylic acid emulsion, 5g of polyethylene wax emulsion, 2g of water-based silicone leveling agent, and 2g of silicone disinfectant. Add 1 g of foaming agent and 7 g of deionized water into the mixin...

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Abstract

The present invention relates to chemical paint technology, and is especially one kind of water thinned polishing oil for offset line and its preparation process. The water thinned polishing oil consists of styrene-acrylate resin emulsion containing three functional monomer and N-hydroxyethyl acrylamide 40-75 wt%, acrylic resin solution 5-30 wt%, filming acrylic acid emulsion 5-20 wt%, wax emulsion 1-10 wt%, water thinned leveling agent 0.5-3 wt%, water thinned defoaming agent 0.2-5 wt% and water for the rest. The present invention has simple preparation process and can reach high printing level.

Description

technical field [0001] The invention relates to the technical field of chemical coatings, in particular to an in-line water-based varnish for offset printing. Background technique [0002] Printing and glazing is a method of printing varnish once or twice with a printing machine on the surface of a replica that has completely completed the graphic printing process, so that the surface of the printed matter can obtain a bright film layer. Printing glazing can enhance the light fastness of the ink, increase the heat and moisture resistance of the ink layer, and play a role in protecting the imprint and beautifying the product. With the development of society, human beings' awareness of the protection of the living environment is also increasing. For the printing industry, many requirements and restrictions on hygiene, environmental protection, labor protection, etc. have been gradually increased, especially the requirements for food packaging and printing are more stringent, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D125/14B41F23/08C09D133/08C09D123/06C09D131/04
Inventor 舒泉水胡德平卢明
Owner HUIZHOU KAIHUI CHEM
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