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Water-based UV-Monocoat colored coating for plastic base material and construction process

A colored coating, water-based technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of difficult coating, poor adhesion, slow drying, etc., to achieve convenient construction, excellent adhesion, and strong metallic feeling of the coating film Effect

Pending Publication Date: 2021-11-26
GUANGZHOU JOINTAS CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] At present, water-based UV coatings still have defects such as poor storage stability, unsatisfactory water resistance and solvent resistance of the paint film, difficulty in coating substrates, slow drying, etc., and more difficult to meet technical requirements, especially for ABS+glass fiber, PC+glass Fiber and other composite substrates have poor adhesion, making it more difficult to meet the process requirements of dark Monocoat. With the growth of notebook 3C products and changes in materials, high standards for decoration and coating performance, as well as high automation and environmental protection for spraying lines requirements, the market urgently needs to develop a waterborne UV-Monocoat colored coating suitable for plastic substrates

Method used

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  • Water-based UV-Monocoat colored coating for plastic base material and construction process
  • Water-based UV-Monocoat colored coating for plastic base material and construction process
  • Water-based UV-Monocoat colored coating for plastic base material and construction process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] A kind of UV-Monocoat water-based UV resin A, its preparation steps are as follows:

[0062] a) Preparation of epoxy acrylate E44A: add 0.1mol bisphenol A epoxy resin E-44 to a four-necked flask equipped with a reflux condenser, thermometer, dropping funnel and stirrer, and wait until the temperature rises to 80°C Slowly add dropwise a mixture of 0.2mol acrylic acid, 1.5 parts N,N-dimethylaniline and 0.2 parts p-hydroxyanisole. After the dropwise addition, slowly raise the temperature to 85-90°C, keep the temperature for 3 hours, and then every 40 minutes

[0063] Sampling and detecting the acid value of the system, when the detected acid value is lower than 5mgKOH / g, the reaction is stopped to obtain epoxy acrylate E44A;

[0064] b), preparation of polyurethane prepolymer: add 0.2mol polyether glycol sulfonate SPPG, 0.1mol polyester in advance dehydration treatment in the four-neck flask equipped with reflux condenser, thermometer, dropping funnel and stirrer Dihydric...

Embodiment 2

[0070] A kind of UV-Monocoat water-based UV resin B, its preparation steps are as follows:

[0071] a) Preparation of epoxy acrylate E44A: add 0.1mol bisphenol A epoxy resin E-44 to a four-necked flask equipped with a reflux condenser, thermometer, dropping funnel and stirrer, and wait until the temperature rises to 80°C Slowly add dropwise a mixture of 0.2mol acrylic acid, 1.5 parts N,N-dimethylaniline and 0.2 parts p-hydroxyanisole. After the dropwise addition, slowly raise the temperature to 85-90°C, keep the temperature for 3 hours, and then every 40 minutes

[0072] Sampling and detecting the acid value of the system, when the detected acid value is lower than 5mgKOH / g, the reaction is stopped to obtain epoxy acrylate E44A;

[0073] b), preparation of polyurethane prepolymer: add 0.2mol polyether glycol sulfonate SPPG, 0.12mol polyester of pre-dehydration treatment in the four-neck flask equipped with reflux condenser, thermometer, dropping funnel and stirrer Dihydric al...

Embodiment 3

[0079] A water-based UV-Monocoat silver-white paint for plastic substrates: by weight, it consists of: 60.0 parts of water-based UV resin A, 5.0 parts of 8 μm water-based aluminum silver paste, 2.0 parts of 10 μm water-based aluminum silver paste, and 0.2 parts of Tego 270 , Tego 41000.2 parts, diethylene glycol ethyl ether 3.0 parts, silver row additive 2.4 parts, 1173+TPO 2.0 parts, leveling agent 0.4 parts, matting agent 1.6 parts, pH regulator 0.2 parts, BYK-3720 1.5 parts, increase Thickener 0.3 parts, deionized water 21.2 parts.

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Abstract

The invention relates to a water-based UV-Monocoat colored coating for a plastic base material and a construction process. The water-based UV-Monocoat colored coating is prepared from water-based UV resin, aluminum paste, color concentrate or color paste, pearl powder, a solvent, an auxiliary agent, a photoinitiator and water. The water-based UV resin is 8-functional-group sulfonate anionic epoxy modified polyurethane acrylate; according to the water-based UV-Monocoat for the plastic base material, a paint film of the water-based UV-Monocoat is high in metal feeling, and the water-based UV-Monocoat has excellent adhesive force, wear resistance, alcohol resistance, boiling resistance, flexibility, scratch resistance, hand perspiration resistance, humidity and heat resistance, pollution resistance and skin feeling; the recoatability is not influenced, and moreover, the construction is convenient, safe and environment-friendly. The coating can be used for 3C products such as plastic base materials such as ABS, PC, ABS+PC, ABS+glass fibers and PC+glass fibers, such as stylus televisions, mice, keys, mobile phones, household appliances, switches, packaging materials and automotive upholstery, and can also be used for surface coating of various metal alloy primers.

Description

technical field [0001] The invention relates to a water-based UV paint, in particular to a water-based UV-Monocoat colored paint for plastic substrates and a construction process, and belongs to the technical field of water-based UV paints. Background technique [0002] Ultraviolet (UV) curing coating is a new type of coating with high efficiency, energy saving and environmental protection. Traditional UV coatings use active diluents to adjust rheology, resulting in a strong pungent odor and adverse effects on the physical properties of the coating film. Water-based UV-curable coatings basically do not use reactive diluents, avoiding the curing shrinkage caused by them, and become a new direction for the development of UV-curable coatings. [0003] Compared with traditional UV coatings, water-based UV coatings have the following advantages: water is easy to obtain, cheap and environmentally friendly, and achieves low or zero VOC; there is no irritating odor during coating sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/16C09D7/62
CPCC09D175/16C09D7/62C08K2003/0812C08K9/10C08K3/08
Inventor 许钧强罗福辉欧祖喜齐俊胜林峰
Owner GUANGZHOU JOINTAS CHEM
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