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Ultraviolet-curable extinction resin and preparation method thereof

A technology of matting resin and ultraviolet light, which is applied in coatings, polyurea/polyurethane coatings, etc., can solve problems such as uneven gloss, decreased coating film hardness, and excessive viscosity of the system, achieving good matting effect and good antifouling performance Effect

Active Publication Date: 2013-05-22
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to achieve a better matt effect for the cured matting resin, a certain amount of matting powder needs to be added, so it is impossible to get rid of the dependence on matting powder, and the addition of matting powder will bring a series of problems, such as the hardness of the coating film. Decrease, excessive viscosity of the system, difficulty in coating construction, uneven gloss, etc.

Method used

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  • Ultraviolet-curable extinction resin and preparation method thereof
  • Ultraviolet-curable extinction resin and preparation method thereof
  • Ultraviolet-curable extinction resin and preparation method thereof

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preparation example Construction

[0042] The present invention also provides a preparation method of ultraviolet light-cured matting resin, comprising:

[0043] A) removing water from poly(1,4-butylene adipate) diol and trimethylolpropane, and reacting with diisocyanate to obtain the first intermediate;

[0044] B) reacting the first intermediate with hydroxy silicone oil, hydroxyphenyl sulfide and hydroxy-terminated acrylate under the action of a catalyst and a polymerization inhibitor to obtain a UV-curable matting resin.

[0045] The present invention first removes water from polyadipate-1,4-butylene glycol and trimethylolpropane, and the number average molecular weight of the polyadipate-1,4-butylene glycol is preferably 1000~3500 Daltons; the present invention has no limitation on the dewatering method, the dewatering method well known to those skilled in the art is enough, preferably 105°C~115°C, vacuum distillation 1~1.5h; the present invention is for The sources of the poly-1,4-butylene adipate diol a...

Embodiment 1

[0058] Mix 252 g of polyadipate-1,4-butylene glycol ester diol with a number average molecular weight of 1000 Daltons and 128 g of trimethylolpropane in a three-necked flask, heat up to 110° C., and depressurize for 1 hour; Under the protection of nitrogen, the temperature of the reaction system was lowered to 75° C., and 160 g of 2,4-toluene diisocyanate was added dropwise at a speed of 10 mL / min. After the dropwise addition was completed, the mixture was reacted for 2.5 hours to obtain the first intermediate.

[0059] Add 380g of hydroxysilicone oil (n=30), 58g of 4,4'-dihydroxydiphenyl sulfide, 0.32g of dibutyltin dilaurate and 0.61g of p-hydroxyanisole to the first intermediate, and react The temperature of the system was lowered to 80° C., and 165 g of hydroxyethyl acrylate was added dropwise at a rate of 10 mL / min. After the dropwise addition was completed, the reaction was carried out for 1.5 hours to obtain a UV-curable resin.

[0060] Carry out nuclear magnetic resona...

Embodiment 2

[0065] Mix 320 g of poly(1,4-butylene adipate) diol with a number average molecular weight of 3,500 Daltons and 145 g of trimethylolpropane in a three-necked flask, raise the temperature to 110° C., and depressurize for 1.5 hours; Under nitrogen protection, the temperature of the reaction system was lowered to 75° C., and 226 g of diphenylmethane-4,4′-diisocyanate was added dropwise at a rate of 13 mL / min. After the dropwise addition was completed, the mixture was reacted for 4 hours to obtain the first intermediate.

[0066] Add 448g of hydroxysilicone oil (n=50), 92g of 3,3'-dihydroxydiphenyl disulfide, 0.55g of dibutyltin dilaurate and 1.15g of p-hydroxyanisole to the first intermediate. The temperature of the reaction system was lowered to 80° C., and 284 g of dipentaerythritol pentaacrylate was added dropwise at a rate of 13 mL / min. After the dropwise addition was completed, the mixture was reacted for 2 hours to obtain a UV-curable resin.

[0067] The above-mentioned pre...

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Abstract

The invention provides an ultraviolet-curable extinction resin which is obtained by reacting poly-1,4-butanediol esterdiol, trimethylolpropane, hydroxyl silicone oil, phenol thioether, diisocyanate and hydroxyl-terminated acrylate under the action of a catalyst and an inhibitor. The ultraviolet-curable extinction resin has a good extinction effect without adding extinction powders as phenyl sulfide and siloxane structures are introduced to the main chain structure of the ultraviolet-curable extinction resin provided by the invention and the group refraction coefficients of the phenyl sulfide and siloxane structures make a great difference. At the same time, the ultraviolet-curable extinction resin has good pollution resistant property as the siloxane structure is introduced into the main chain structure. The experimental results show that the vancometer adopted by the ultraviolet-curable coating prepared by the ultraviolet-curable extinction resin provided by the invention enters at 60 degrees with the glossiness of 8GU, and no imprinting is left by wiping 10 minutes later after a 3M marking pen writs on the ultraviolet-curable coating.

Description

technical field [0001] The invention relates to the technical field of UV-curable matte coatings, in particular to a UV-curable matting resin and a preparation method thereof. Background technique [0002] UV-curable coating is an energy-saving and environmentally friendly coating developed in the 1960s. After being irradiated by ultraviolet light, a photochemical reaction will occur, and the liquid oligomer coating will be cross-linked and polymerized to form a solid coating instantly. In recent years, UV-curable matt coatings have been widely studied. The matt coatings refer to paints with reduced gloss compared with glossy paints. They are usually divided into semi-matt paints and full-matt paints. Semi-matt paints are When it is incident at an angle of 60 degrees, the gloss is about 40-60GU. For Quanya, when it is incident at an angle of 60 degrees, the glossiness is lower than 30GU. UV-curable matt coatings are usually formulated with matting resins as the main base. ...

Claims

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Application Information

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IPC IPC(8): C08G18/67C08G18/66C08G18/61C08G18/42C08G18/32C09D175/14
Inventor 张红明李季王献红王佛松
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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