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

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

Examples

Experimental program
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Example Embodiment

[0042] The present invention also provides a preparation method of ultraviolet curable matting resin, including:

[0043] A) Remove water from poly-1,4-butanediol adipate diol and trimethylolpropane, and react with diisocyanate to obtain the first intermediate;

[0044] B) The first intermediate is reacted with hydroxy silicone oil, hydroxy phenyl 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 poly-1,4-butanediol adipate diol and trimethylolpropane. The number average molecular weight of the poly-1,4-butanediol adipate diol is preferably 1000 to 3500 Daltons; the present invention has no limitation on the water removal method, and the water removal method well known to those skilled in the art is sufficient, preferably 105°C to 115°C, vacuum distillation for 1 to 1.5 hours; The sources of the poly-1,4-butanediol adipate diol and trimeth...

Example Embodiment

[0057] Example 1

[0058] Mix 252 g of poly-1,4-butanediol adipate diol with a number average molecular weight of 1000 Daltons and 128 g of trimethylolpropane in a three-necked flask, raise the temperature to 110°C, and reduce pressure for 1 hour; Under the protection of nitrogen, the reaction system was cooled to 75° C., and 160 g of 2,4-toluene diisocyanate was added dropwise at a rate of 10 mL / min. After the addition, the reaction was performed for 2.5 hours to obtain the first intermediate.

[0059] Add 380g of hydroxy silicone 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 addition was completed, the reaction was carried out for 1.5 hours to obtain an ultraviolet curable resin.

[0060] The NMR analysis of the ultraviolet curable resin prepar...

Example Embodiment

[0064] Example 2

[0065] 320g of poly-1,4-butanediol adipate diol with a number average molecular weight of 3500 Daltons and 145g of trimethylolpropane were mixed in a three-neck flask, heated to 110°C, and reduced pressure for 1.5 hours; Under the protection of nitrogen, the reaction system was cooled to 75° C., and 226 g of diphenylmethane-4,4′-diisocyanate was added dropwise at a rate of 13 mL / min. After the addition, the reaction was carried out for 4 hours to obtain the first intermediate.

[0066] Add 448g of hydroxy silicone 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, the reaction system was reacted for 2 hours to obtain an ultraviolet curable resin.

[0067] Nuclear magnetic resonance analysis was perfor...

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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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