UV (Ultraviolet) impressing gloss oil and preparation method thereof

A varnish and photoinitiator technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve the problems of imprinting process that cannot be completed, poor adhesion of plastic films, uneven coating structure, etc. , to achieve the effect of being conducive to accurate overprinting, good environmental performance and small volume shrinkage

Active Publication Date: 2014-04-30
汕头市龙湖昌丰化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing UV embossing varnishes have poor adhesion to plastic films (especially PET films, which are very difficult to adhere due to their smooth surface and high crystallinity), and UV embossing varnishes are difficult to adhere to due to the rapid curing process. The volume shrinkage of the coating causes the deformation difference with the plastic film substrate, thus generating stress between the coating and the substrate, resulting in the uneven structure of the coating itself, making the adhesion more difficult, and it is impossible to complete the coating and pressing Embossing process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] In this embodiment, polyacrylic resin and polyurethane resin are prepared first.

[0040] The preparation method of polyacrylic resin includes the following steps:

[0041] (1) Prepare raw materials according to the following weight ratio: 120 parts of acrylate monomer, 2 parts of initiator (both benzoyl peroxide), 25 parts of acrylic acid, 8 parts of modified rosin resin (both hydrogenated rosin), resistance 0.5 parts of polymerizer A (all p-methoxyphenol), 0.6 parts of catalyst A (all triphenylphosphorus); the 120 parts of acrylic ester monomers contain 25 parts of hydroxyethyl acrylate and 25 parts of glycidyl acrylate Parts, 30 parts of butyl acrylate, 40 parts of butyl methacrylate;

[0042] (2) Add 20 parts (by weight) of reflux solvent (all toluene) into the reactor equipped with thermometer, stirrer and condenser and heat to 120°C, then add dropwise the mixture of acrylate monomer and initiator , After 4 hours of reaction (reaction at 120°C), an acrylic resin with hy...

Embodiment 2

[0054] In this embodiment, polyacrylic resin and polyurethane resin are prepared first.

[0055] The preparation method of polyacrylic resin includes the following steps:

[0056] (1) Prepare raw materials according to the following weight ratio: 95 parts of acrylate monomer, 0.5 parts of initiator (both di-tert-amyl peroxide), 20 parts of acrylic acid, and 10 parts of modified rosin resin (both are acrylic modified Rosin ester), 0.1 part of polymerization inhibitor A (all p-methoxyphenol), 1 part of catalyst A (all triphenylphosphorus); the 95 parts of acrylate monomers contain 20 parts of hydroxyethyl acrylate, 20 parts of glycidyl acrylate, 30 parts of butyl acrylate, 15 parts of butyl methacrylate, 10 parts of isobornyl acrylate;

[0057] (2) Add 15 parts (by weight) of reflux solvent (all toluene) into the reactor equipped with thermometer, stirrer and condenser and heat to 130°C, then add dropwise the mixture of acrylate monomer and initiator After 3 hours of reaction (reacti...

Embodiment 3

[0069] In this embodiment, polyacrylic resin and polyurethane resin are prepared first.

[0070] The preparation method of polyacrylic resin includes the following steps:

[0071] (1) Prepare raw materials according to the following weight ratio: 140 parts of acrylate monomer, 4 parts of initiator (both tert-butyl hydroperoxide), 30 parts of methacrylic acid, 5 parts of modified rosin resin (both hydrogenated rosin) ), 1 part of polymerization inhibitor A (both are 2,6-di-tert-butyl-p-cresol), 0.1 part of catalyst A (both are triethylamine); the 140 parts of acrylate monomers contain hydroxypropyl acrylate 15 parts, 15 parts of hydroxyethyl acrylate, 20 parts of glycidyl acrylate, 10 parts of glycidyl versatate, 50 parts of butyl acrylate, 30 parts of ethyl acrylate;

[0072] (2) Add 30 parts (by weight) of reflux solvent (all toluene) into the reactor equipped with thermometer, stirrer and condenser and heat to 110°C, then add dropwise the mixture of acrylate monomer and initiator ...

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PUM

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Abstract

The invention provides UV (Ultraviolet) impressing gloss oil. The UV impressing gloss oil contains components according to the following weight ratios: 10-30 parts of polyacrylic acid resin, 20-40 parts of polyurethane resin, 40-60 parts of diluent monomer, 2-10 parts of photoinitiator, and 1-5 parts of auxiliary. The invention also provides a preparation method of the UV impressing gloss oil. The UV impressing gloss oil provided by the invention adopts the matching of the polyacrylic acid resin and the polyurethane resin, can meet the requirements on both adhesive force and curing speed, has excellent adhesive force to a plastic film, such as a PET (Polyethylene Terephthalate) film, and can be rapidly cured; moreover, in the process of rapid curing, the coating volume shrinkage of the UV impressing gloss oil provided by the invention is little, and the deformation of a base material of the plastic film can be reduced so as to be beneficial to the precise overprinting of impressing images and texts and printing images and texts; the UV impressing gloss oil provided by the invention is high in solid content, the impressing of images and texts with deeper grains is easy to realize, and a large amount of evaporation of a solvent does not exist in use, so that the UV impressing gloss oil has good environmental protection performance.

Description

Technical field [0001] The invention relates to a coating composition, in particular to a UV embossing varnish and a preparation method thereof. Background technique [0002] Because of its colorful patterns, laser graphic packaging materials are becoming more and more popular, and their application scale is gradually expanding, especially in the packaging of cigarette packages and wine labels. [0003] Traditional laser graphic packaging materials are generally produced according to the following steps: (1) Production of transfer film: coating molded paint on the plastic film to form a molded layer, and then press the laser graphic on the molded layer to form a molded laser image (2) Aluminized: Aluminium layer is plated on the above-mentioned molded layer; (3) Laminating transfer: The rolled transfer film coated with aluminum layer is placed on the unwinding device, and the transfer film is pasted When the device is installed, it is attached to the substrate (such as paper) coat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/16C09D7/12C08F220/18C08F220/28C08F220/32C08F220/06C08G18/67
Inventor 胡俊王俊博郑良晓
Owner 汕头市龙湖昌丰化工有限公司
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