A kind of self-extinction photocurable resin, preparation method and application thereof

A light-curing resin and self-dulling technology, which is applied in coatings, polyurea/polyurethane coatings, etc., can solve the problems of matte UV coatings, such as difficult matting, easy damage to the coating surface, poor orientation of matting powder, etc., to achieve matte The effect is uniform, the adhesion is good, and the matting effect is in line with the effect

Active Publication Date: 2020-11-24
WANHUA CHEM BEIJING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method of adding matting agent or flatting agent makes matte UV coatings have problems such as being difficult to extinction, poor alignment of matting powder, unstable gloss and surface blooming; Large (generally more than five parts per one hundred parts of resin), under this amount of matting agent, the viscosity of the coating increases rapidly, and the coating surface is easily damaged

Method used

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  • A kind of self-extinction photocurable resin, preparation method and application thereof
  • A kind of self-extinction photocurable resin, preparation method and application thereof
  • A kind of self-extinction photocurable resin, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] (1) to a device with a stirrer, a thermometer and a 2 Add 372.9g of TDI monomer 1, 300g of trimethylolpropane triacrylate and 2g of 2,6-di-tert-butyl-4-methylphenol into a protected 1000ml four-neck flask, stir well, heat to 50°C, and slowly add 223.7g hydroxyethyl acrylate; after adding hydroxyethyl acrylate, keep the system temperature at around 50°C;

[0063] (2) When the NCO content of the system is 11%, add 1g of 2,4,6-tris(dimethylaminomethyl)phenol and heat up to 60°C for reaction;

[0064] (3) When the NCO content of the system drops to 3.31%, add 0.4g of benzoyl chloride; heat up to 75°C for reaction, and slowly add 99.6g of hydroxyethyl acrylate;

[0065] (4) When the NCO content of the system drops to 0.41%, add 0.5g of p-hydroxyanisole, stir for 30 minutes, then cool down to 25°C, the product preparation is completed, and the material is discharged. The test viscosity is 1100mPa·s (measured at 60°C), and the platinum cobalt color number is 30.

Embodiment 2

[0067] (1) to a device with a stirrer, a thermometer and a 2 Add 306gTDI monomer 2, 100g tripropylene glycol diacrylate and 5g tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester in the protected 1000ml four-necked flask, stir Evenly, heat to 50°C, slowly add 228.5g hydroxyethyl methacrylate; after adding hydroxyethyl methacrylate, maintain the system temperature at about 55°C;

[0068] (2) When the NCO content of the system is 11.6%, add 0.5g of N,N-dimethylbenzylamine, and heat up to 70°C for reaction;

[0069] (3) When the NCO content of the system drops to 5.8%, add 0.2g of benzoyl chloride; heat up to 80°C for reaction, and slowly add 357.9g of hydroxyethyl methacrylate;

[0070] (4) When the NCO content of the system drops to 0.32%, add 2 g of hydroquinone, stir for 30 minutes, then cool down to 25° C., the product preparation is completed, and the material is discharged. The test viscosity is 230mPa·s (measured at 60°C), and the platinum c...

Embodiment 3

[0072] (1) to a device with a stirrer, a thermometer and a 2 Add 590.8g of TDI monomer 1, 6g of 2,6-di-tert-butyl-4-methylphenol and 2g of triphenyl phosphite into a protected 1000ml four-neck flask, stir well, and heat to 60°C;

[0073] (2) When the NCO content of the system is 48%, add 2g of 2,4,6-tris(dimethylaminomethyl)phenol, and heat up to 65°C for reaction;

[0074] (3) When the NCO content of the system drops to 24%, add 1.5g of phosphoric acid; heat up to 70°C for reaction, and slowly add 393.9g of hydroxyethyl acrylate;

[0075] (4) When the NCO content of the system drops to 0.48%, add 4g of p-hydroxyanisole, stir for 30 minutes, then cool down to 25°C, the product preparation is completed, and the material is discharged. The test viscosity is 3850mPa·s (measured at 60°C), and the platinum cobalt color number is 40.

[0076] Preparation of paint film

[0077] According to the formula shown in Table 2, the raw materials of each component were stirred evenly at 25...

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Abstract

The invention relates to a self-extinction type light-cured resin as well as a preparation method and application thereof. The self-extinction type light-cured resin comprises modified TDI isocyanurate and modified TDI. Under a condition without an extinction agent, the light-cured resin has good extinction properties; the self-extinction type light-cured resin is prepared from raw materials, namely a TDI-containing monomer, a monohydroxy acrylate compound, an antioxidant, a catalyst, a terminator, a polymerization inhibitor and an optional diluent. The preparation method of the light-cured resin is simple and feasible, the light-cured resin is used for preparing a UV coating, the UV coating is free of extinction agent, and a coating film has pencil hardness greater than 4H, and has glossiness less than 30 when an incident angle is 60 degrees.

Description

technical field [0001] The invention relates to a photocurable resin with self-extinction property, a preparation method and its application, especially a photocurable acrylic polyurethane oligomer with self-extinction property and its preparation method, and its use for preparing matte UV coating the use of. Background technique [0002] High-gloss UV-curable coatings have been successfully applied to wooden furniture, refrigerators, and motorcycle parts, and a certain production scale has been formed in China. However, with the improvement of people's living standards and the pursuit of personalization and leisure in consumption, the high-gloss coating market has gradually transitioned to the high-gloss, flat and sub-three sub-markets, especially the all-matte bamboo flooring can enhance the elegance of the environment and comfort, so the market demand involved is increasing day by day. [0003] The matting property of the coating film is related to the gloss and hiding ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/76C08G18/67C09D175/14
CPCC08G18/672C08G18/7614C09D175/14
Inventor 张啸朱芸林张平张鹏林亨
Owner WANHUA CHEM BEIJING
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