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A kind of uv coating and preparation method thereof

A technology for coatings and raw materials, applied in the field of UV coatings and their preparation, can solve problems such as adverse environmental effects, and achieve the effects of improving curing efficiency, improving photo-initiating efficiency, and good anti-oxidative polymerization inhibition effect.

Active Publication Date: 2022-04-22
HUNAN BANFERT NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional UV coatings will release harmful substances - formaldehyde, benzene series, volatile organic compounds, heavy metals, etc. during the construction process, causing adverse effects on the environment and human body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] In one embodiment, the preparation method of the polyurethane acrylate modified by the N-alkylmaleimide comprises the following steps:

[0038] (1) Mix polyester polyol and polyisocyanate, add catalyst I, and react at a temperature of 75-90° C. for 2-3 hours to obtain prepolymer I;

[0039] (2) Slowly add N-alkylmaleimide into prepolymer I to dissolve, add catalyst I after the dissolution is completed, and react at a temperature of 70-80°C for 2-3 hours to obtain prepolymer II;

[0040] (3) Add polymerization inhibitor I, then add hydroxyacrylate monomer to prepolymer II, and react at a temperature of 75-90°C for 2-3 hours to obtain the product.

[0041] Preferably, the content of functional groups in the prepolymer I and N-alkylmaleimide n(-NCO):n(-OH)=(3-4):1; more preferably, the prepolymer The content of functional groups in polymer I and N-alkylmaleimide n(-NCO):n(-OH)=3.5:1.

[0042] Preferably, the content of functional groups in the prepolymer II and the hydro...

Embodiment 1

[0084] Embodiment 1 of the present invention provides a kind of UV paint, and its preparation raw material is specifically: 50 parts of N-alkylmaleimide modified polyurethane acrylates, 20 parts of acrylate monomers, 0.5 parts by weight Parts of initiator, 20 parts of photocurable monomer, 5 parts of powder, 5 parts of additives.

[0085] The preparation method of the polyurethane acrylate modified by the N-alkylmaleimide is specifically:

[0086] (1) Mix polyester polyol and polyisocyanate, add catalyst I, and react at a temperature of 82° C. for 2.5 hours to obtain prepolymer I;

[0087] (2) Slowly add N-alkylmaleimide into prepolymer I to dissolve, add catalyst I after the dissolution is completed, and react at a temperature of 75° C. for 2.6 hours to obtain prepolymer II;

[0088] (3) Add polymerization inhibitor I, then add hydroxyacrylate monomer to prepolymer II, and react at 84°C for 2.5h to obtain the product.

[0089] The polyester polyol is a polycarbonate diol wi...

Embodiment 2

[0096] Embodiment 2 of the present invention provides a kind of UV coating, and its preparation raw material is specifically: 60 parts of N-alkylmaleimide modified polyurethane acrylates, 25 parts of acrylate monomers, 0.1 parts by weight. 1 part initiator, 10 parts photocurable monomer, 4 parts powder, 1 part additive.

[0097] The preparation method of the polyurethane acrylate modified by the N-alkylmaleimide is specifically:

[0098] (1) Mix polyester polyol and polyisocyanate, add catalyst I, and react at a temperature of 82° C. for 2.5 hours to obtain prepolymer I;

[0099] (2) Slowly add N-alkylmaleimide into prepolymer I to dissolve, add catalyst I after the dissolution is completed, and react at a temperature of 75° C. for 2.6 hours to obtain prepolymer II;

[0100] (3) Add polymerization inhibitor I, then add hydroxyacrylate monomer to prepolymer II, and react at 84°C for 2.5h to obtain the product.

[0101] The polyester polyol is a polycarbonate diol with a weigh...

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Abstract

The present invention relates to coating field, more specifically, the present invention relates to a kind of UV coating and preparation method thereof, by weight, the preparation raw material of described coating comprises 45-60 parts of N-alkylmaleimide modified Urethane acrylate, 10-35 parts acrylate monomer, 0.05-1 part initiator. The dosage of UV paint initiator described in this application is low, and the odor is low, reaching the A in the French VOC label + standard.

Description

technical field [0001] The invention relates to the field of coatings, more specifically, the invention relates to a UV coating and a preparation method thereof. Background technique [0002] UV coatings are UV-curable coatings, which were first used in the furniture and flooring industries, and have the advantages of fast curing speed, low energy consumption, and low pollution. With the development of coating technology, UV coatings are gradually applied to plastics, paper, wood, metal, leather and other materials, becoming an important choice for decorative coatings in many industries. [0003] Coatings are closely related to our lives. However, traditional UV coatings will release harmful substances-formaldehyde, benzene series, volatile organic compounds, heavy metals, etc. during the construction process, causing adverse effects on the environment and human body. Contents of the invention [0004] For some problems existing in the prior art, the first aspect of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14
CPCC09D175/14
Inventor 李时珍谢佳武李新雄张冬明
Owner HUNAN BANFERT NEW MATERIALS TECH
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