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High-film-forming waterborne varnish

A water-based varnish and film-forming technology, which is applied in the direction of coating, etc., can solve the problems of low gloss, uniformity of film formation and poor adhesion fastness, etc., to increase the cross-linked structure and increase the content of hard segments , The effect of enhancing the firmness of film formation

Pending Publication Date: 2019-05-31
雷飞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a high-film-forming water-based varnish for the problems of low gloss, poor film-forming uniformity and adhesion fastness of commonly used water-based varnishes at present.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] The preparation method of the composite varnish base material includes the following steps:

[0034] (1) Mix styrene, epoxy resin, and hydroquinone in the reaction kettle at 30~45℃, according to the mass ratio of 4~8:1:0.3, stir for 40~60min at 450~800r / min, heat up to 50~65℃, add reagent A with 2~5 times the mass of styrene, mix with 500~900r / min magnetic force for 1~3h, cool to room temperature naturally, let stand at room temperature for 25~50min, get self-made monomer, at 45~ 60℃, according to the mass ratio of 4~8:3:2:1, take polyether glycol, dihydroxypropionic acid, and diethylene glycol in the reaction kettle and mix, vacuum and dehydrate for 25~45min, with 450~800r / Min magnetic stirring for 40~60min, get the mixture, take the mixture according to the mass ratio of 15~25:1:3:4, add isophorone diisocyanate, polyether diol, and self-made monomer and mix at 65~80℃ , Keep holding reaction for 20~45min, stir with 500~800r / min magnetic force for 40~60min, add 20% aqueo...

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Abstract

The invention discloses high-film-forming waterborne varnish, and belongs to the technical field of printing. According to the varnish, an epoxy group is introduced, so that the sizes of dispersion particles are increased, the viscosity of the varnish has a rising trend, film forming firmness is improved, and impact resistance of a coating film and firmness of a formed film are enhanced, so that the firmness of the formed film is further improved. According to a prepared oleamide substance modified silicon-containing reagent, wetting dispersion effects are enhanced, uniform dispersion performance on the surface of a printed object can be improved, haze of a thin film is reduced, transparency, glossiness and film forming binding effects are improved, added laccase forms a new free radical,film forming firmness is further enchanted, the varnish is matched with surface active materials and leveling agents, leveling property is improved, so that the varnish is conveniently and uniformly dispersed, film forming compact is improved, diffuse reflection of an interface can be reduced, light transmittance is improved, and glossiness is also improved. The varnish solves the problems that current frequently-used waterborne varnish is low in glossiness and poor in film forming uniformity and adhesion.

Description

Technical field [0001] The invention belongs to the technical field of printing, and specifically relates to a high film-forming water-based varnish. Background technique [0002] In recent years, with the progress of the economy and the continuous improvement of people's living standards, the quality requirements of printed matter and the environmental protection requirements of the printing industry have continued to increase. Coating is one of the most widely used processes in the printing industry, and it is an indispensable part of the printing industry. It is imperative to develop and improve it. Varnish is a colorless, transparent or translucent ink. When glazing, a layer of glazing oil is applied to the surface of the printed matter, and the subsequent process is combined to form a transparent bright layer on the surface of the printed matter to achieve the effect of decoration and protection of the printed matter . In traditional solvent-based varnishing operations, so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/08C09D7/65C09D7/63C08F283/00C08F220/18
Inventor 雷飞黄春妹钱丽琴
Owner 雷飞
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