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Coating material solidified by ultraviolet light and prepartion method

A technology of curing coatings and ultraviolet light, which is applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of poor comprehensive performance of coating paint surface wear resistance and flexibility, and achieve improved wear resistance and flexibility Effect

Inactive Publication Date: 2006-07-05
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a UV-curable coating with good wear resistance and flexibility for the defect that the comprehensive performance of the coating paint surface in the prior art is poor and the flexibility is relatively poor. its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] According to the preparation method of the coating provided by the present invention, the mixing of the main resin, diluent and photoinitiator can be carried out simultaneously or step by step. Preferably, the photoinitiator is mixed with part of the diluent to make the photoinitiator fully Dissolve to obtain a solution containing a photoinitiator, mix the main resin and part of the diluent uniformly to obtain a slurry containing the main resin, then mix the solution containing the photoinitiator and the slurry containing the main resin evenly, and finally add The remaining thinner is mixed well.

[0027] In order to disperse the main resin evenly, when mixing the main resin with part of the diluent, the mixing temperature can be increased, and the mixing temperature is a conventional mixing temperature, which is generally 30-60°C.

[0028] If the coating also contains additives such as leveling agent, defoamer, and dispersant, the method provided by the invention also ...

Embodiment 1

[0034] This example illustrates the coating provided by the invention and its preparation method.

[0035] Prepare the coating as follows: (1) mix 6 grams of photoinitiator Irgacure2022 with 10 grams of diluent (toluene: ethyl acetate: n-butanol = 1: 1: 1), stir until fully dissolved; (2) mix 36 Gram six-functionality aliphatic urethane acrylate resin (Nippon Synthetic Chemical Co., Ltd. product, model UV-7605B) and 24 three-functionality aliphatic urethane acrylate resin (UCB company product, model Ebecryl 264) and 15 grams of diluent (toluene : ethyl acetate: n-butanol=1: 1: 1) mixed at 40°C, stirred evenly, (3) the product obtained in steps (1) and (2) was mixed; (4) cooling, filtering the obtained slurry, (5) Continue to add 9 grams of diluent (toluene: ethyl acetate: n-butanol = 1:1:1), and stir evenly to obtain coating T1. Table 1 gives the composition of T1.

Embodiment 2

[0040] This example illustrates the coating provided by the invention and its preparation method.

[0041] Prepare the coating as follows: (1) mix 3 grams of photoinitiator Irgacurel84 with 7 grams of diluent (butyl acetate: ethanol: cyclohexanone: ethylene glycol butyl ether = 1: 1: 1: 1), stir until Fully dissolve; (2) 12 grams of six-functionality aliphatic urethane acrylate resin (Nippon Synthetic Chemical Co., Ltd. product, model UV-7605B) and 18 grams of two-functionality aliphatic urethane acrylate resin (Galstaff company product, model 305 ) and 30 grams of diluent (butyl acetate: ethanol: cyclohexanone: ethylene glycol butyl ether = 1: 1: 1: 1) are mixed at 40°C and stirred evenly, (3) steps (1) and (2) ) the product that obtains is mixed; (4) cool down, filter the slurry that obtains, to remove residue; (5) continue to add 30 grams of diluent (butyl acetate: ethanol: cyclohexanone: ethylene glycol butyl ether=1: 1: 1:1), and stirred evenly to obtain coating T2. Tab...

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Abstract

An ultraviolet curing painting, comprising the main resin, the dilution agent and the photo-initiator, and comprising or not comprising the assistant, wherein the said main resin is a mixture of high and low degree of functionality polyurethane acrylate resins, of which the said high degree of functionality polyurethane acrylate resin is a polyurethane acrylate resin with 4-9 double carbon bonds at the end of the molecules, while the said low degree of functionality polyurethane acrylate resin is a polyurethane acrylate resin with 2-3 double carbon bonds at the end of the molecules. Compared with the present processes, the curing coat of the painting has good abrasion resistance and flexibility.

Description

technical field [0001] The present invention relates to a photocurable coating and a preparation method thereof, more specifically to an ultraviolet photocurable coating and a preparation method thereof. Background technique [0002] Ultraviolet light-curing coating (UV coating) is a new type of coating that has emerged in my country in recent years. The coating has high solid content, rapid drying, and energy saving. [0003] Existing UV-curable coatings contain main resin, diluent and photoinitiator, and sometimes also contain additives such as leveling agent, defoamer, lubricant, and wear-resistant agent. Wherein, the host resin is selected from at least one of polyester acrylate, polyurethane acrylate and epoxy acrylate. [0004] CN1436825A discloses a UV-curable coating, which consists of 20-50% by weight of aliphatic urethane acrylate, 0-20% by weight of acrylic modified epoxy resin, and 10-50% by weight of reactive acrylate monomer , 1-5% by weight of photoinitiator...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/16
Inventor 谭伟华
Owner BYD CO LTD
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