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High-performance water-based UV cured glazing oil for paper and preparation method thereof

A high-performance, water-based technology, used in paper, paper, textile and paper making, etc., which can solve the problems of polluting the environment, odor, and high viscosity of oligomers.

Active Publication Date: 2014-05-28
江门市邦德涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since most of the UV curing varnishes currently used in China are solvent-based, acrylate reactive diluent monomers are indispensable in the formula. These monomers are harmful to the environment and It may be harmful to human health, which affects its application and promotion. It mainly includes: 1) reactive diluents are irritating to human skin, mucous membranes and eyes, and some have odor; In the special spraying process, a large amount of reactive diluents and sometimes organic solvents must be added, which is unsafe and pollutes the environment; There are still active diluents in the layer; 4) Oily photocurable materials, coating equipment and containers need to be cleaned with organic solvents
In addition, paper is a kind of porous adsorption medium. During the coating and curing process, the active monomer is difficult to react completely, and it is easy to absorb and remain in the paper fiber layer, which will have a negative impact on the long-term performance of printed matter and the safety indicators of the environment.

Method used

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  • High-performance water-based UV cured glazing oil for paper and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Step 1: Add 5g of isophorone diisocyanate to the dry reactor, add 3.5g of polyoxypropylene diol dropwise at 40-50°C, dropwise for 0.5h, and keep warm during the dropping process: ice The water bath and the warm water bath are used in turn to ensure that the temperature is stable during the dropwise addition. After the dropwise addition, the temperature is raised to 60-80°C, and the heat preservation polymerization is carried out for 3 hours;

[0026] Step 2: Cool down to 60°C, then add 80g of epoxy resin E51 to the above reactor, after adding, keep it warm at 70-85°C for 2-3h;

[0027] Step 3: Add acrylic acid to the above reactor, react at 90-105°C for 3-5 hours under the action of a certain catalyst 0.64g N,N dimethylbenzylamine and a polymerization inhibitor 0.08g p-hydroxyanisole, Obtain polyurethane-epoxy acrylic acid prepolymer;

[0028] Step 4: Add maleic anhydride to the polyurethane-epoxy acrylic acid prepolymer at 60-75°C, react for 2-3 hours, cool to 50-60°C...

Embodiment 2

[0031] Step 1: Add 20 g of isophorone diisocyanate to the dry reactor, and drop 30 g of a mixture of polytetrahydrofuran ether diol and propylene glycol at 40-50 ° C (polyoxypropylene diol: propylene glycol = 5: 1 (mass ratio)), the dropping time is 2 hours, and the method of heat preservation during the dropping process is: ice water bath and warm water bath are used alternately to ensure that the temperature is stable during the dropping process. ;

[0032] Step 2: Cool down to 60°C, then add 50g of epoxy resin E51 to the above reactor, after adding, keep warm at 70-85°C for 2-3h;

[0033]Step 3: Add acrylic acid to the above reactor, react at 90-105°C for 3-5 hours under the action of a certain catalyst 0.8g tetrabutylammonium bromide and a polymerization inhibitor 0.4g hydroquinone to obtain polyurethane - Epoxy acrylic acid prepolymer;

[0034] Step 4: Add maleic anhydride to the polyurethane-epoxy acrylic acid prepolymer at 60-75°C, react for 2-3 hours, cool to 50-60°C...

Embodiment 3

[0037] Step 1: Add 5g of toluene diisocyanate to the dry reactor, add 10g of polybutylene adipate diol dropwise at 40-50°C, dropwise for 0.5h, and keep warm during the dropping process: The ice water bath and the warm water bath are used alternately to ensure that the temperature is stable during the dropwise addition. After the dropwise addition is completed, the temperature is raised to 60-80°C, and the heat preservation polymerization is carried out for 3 hours;

[0038] Step 2: Cool down to 60°C, and then add 80 parts by weight of epoxy resin E51 to the above reactor, after adding, keep warm at 70-85°C for 2-3h;

[0039] Step 3: Add acrylic acid to the above reactor, and react at 90-105°C for 3-5 hours under the action of a certain catalyst 0.64g triethylamine and a polymerization inhibitor 0.08g2,6-di-tert-butyl-p-cresol , to obtain polyurethane-epoxy acrylic acid prepolymer;

[0040] Step 4: Add maleic anhydride to the polyurethane-epoxy acrylic acid prepolymer at 60-75...

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Abstract

The invention provides high-performance water-based UV cured glazing oil for paper and a preparation method thereof. The high-performance water-based UV cured glazing oil for paper is characterized in that a water-based polyurethane-epoxy acrylate UV cured prepolymer is adopted as main resin, and is added with a photoinitiator, an auxiliary agent, water or ethanol water for compounding, so that the water-based UV cured glazing oil for paper can be prepared. The preparation method is characterized by comprising the following specific steps: step 1, synthesis of a polyurethane prepolymer; step 2, synthesis of polyurethane modified epoxide resin; step 3, synthesis of a polyurethane-epoxy acrylate prepolymer; step 4, synthesis of the high-performance waterborne polyurethane-epoxy acrylate UV cured prepolymer; step 5, compounding of the waterborne polyurethane-epoxy acrylate UV cured resin with the photoinitiator, the auxiliary agent, water or ethanol water. The high-performance waterborne UV cured glazing oil for paper has the advantages that energy conservation and environmental protection are achieved; the levelling property is excellent; high smoothness, high abrasion resistance and high resistance to viscidity are achieved; a good coating effect can be achieved with smaller gluing amount.

Description

technical field [0001] The invention relates to a high-performance water-based UV curable paper varnish and a preparation method thereof, in particular to a preparation method of a high-performance water-based polyurethane-epoxy acrylic acid UV-curable prepolymer, which fundamentally solves the problem of the flexibility of the current traditional photocurable coatings. The contradiction between hardness and hardness solves the problem of using active diluents in traditional light-curing coatings. The water-based UV-curing paper varnish has environmental protection, energy saving, good leveling, high gloss, high wear resistance and high anti-adhesion, and low coating The amount of glue can get a good coating effect. Background technique [0002] Paper varnish, also known as varnish or polishing oil, is a decorative and protective coating used in the surface decoration of printed matter, and is mainly used in post-printing finishing and packaging materials. With the rapid an...

Claims

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Application Information

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IPC IPC(8): D21H17/57D21H21/12D21H21/06C08G18/67C08G18/66C08G18/58C08G18/34C08G18/32C08G18/12
Inventor 胡飞燕
Owner 江门市邦德涂料有限公司
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