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Active-energy-ray-curable coating composition

An active energy ray, curing technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of poor productivity, insufficient adhesion, deformation of the substrate, etc., to achieve high hardness, excellent scratch resistance , excellent scratch resistance and impact resistance

Active Publication Date: 2015-10-14
TOAGOSEI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although thermosetting silicone-based hard coat agents are excellent in abrasion resistance and scratch resistance, there are problems such as long curing time, poor productivity, and substrate deformation due to the high temperature required for curing.
[0010] However, these coating compositions are superior in abrasion resistance and scratch resistance of the cured film compared with conventional ultraviolet curable coating compositions, but cannot satisfy both abrasion resistance and abrasion resistance at the same time, or cannot Has practically satisfactory performance
In addition, depending on the base material used, the adhesiveness may not be sufficient

Method used

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Examples

Experimental program
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Embodiment

[0169] Hereinafter, the present invention will be specifically described based on examples. In addition, this invention is not limited to these Examples.

[0170] In addition, "part" in the following means "weight part", and "%" means "weight%".

[0171] 1. Manufacture of component (A)

manufacture example 1

[0172] Production example 1 (manufacture of MAC-TQ)

[0173] 150 g of 1-propanol and 36.53 g (0.24 mol) of tetramethoxysilane (hereinafter referred to as "TMOS") for the alcohol exchange reaction are charged into a reactor equipped with a stirrer and a thermometer, and then they are slowly stirred while stirring. Add 4.37 g of 25% tetramethylammonium hydroxide methanol solution (0.1 mol of methanol, 12 mmol of tetramethylammonium hydroxide), and react at a temperature of 25° C. and a pH of 9 for 6 hours. Then, the internal temperature was adjusted to 60° C., and the reaction was further carried out for 1 hour while stirring. Here, the reaction liquid was analyzed by gas chromatography (TCD detector), and as a result, 1 to 4 methoxy groups contained in TMOS were detected by n-propoxy substituted 1, 2, 3, or 4 Substituted compounds and unreacted TMOS. Only trace amounts of TMOS were detected. The ratios of the n-propoxyl-containing compound (n-propoxyl-containing alkoxysilane...

manufacture example 2

[0179] Manufacturing Example 2 (Manufacturing of HDI-M305)

[0180] A mixture of pentaerythritol triacrylate (hereinafter referred to as "PETri") and pentaerythritol tetraacrylate (hereinafter referred to as "PETet") (containing PETri0.3mol and PET (0.2 mol), 159.2 g of "Aronix M-305" (trade name, hereinafter referred to as "M-305") manufactured by Toagosei Co., Ltd., 2,6-di-tert-butyl-4-methylphenol (hereinafter referred to as 0.092g of "BHT") and 0.055g of dibutyltin dilaurate (hereinafter referred to as "DBTL"), set the liquid temperature to 70-75°C, and then add hexamethylene diisocyanate dropwise while stirring them. (hereinafter referred to as "HDI") 25.2 g (0.15 mol) was reacted.

[0181] After completion|finish of dripping HDI, internal temperature was made into 80 degreeC, and reaction was continued, and it stirred for 3 hours. Subsequently, the disappearance of the isocyanate group was confirmed by IR (infrared absorption) analysis of the reaction product, and the ...

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Abstract

An active-energy-ray-curable coating composition according to the invention of the present application comprises the following components (A) to (C) at a specified content ratio: (A) an organosilicon compound produced by the hydrolysis and copolycondensation of a (meth)acryloyl-group-containing silicon compound (a1) represented by general formula (1) and a silicon compound (a2) represented by the formula SiY4 (wherein Y represents a group capable of generating a siloxane bond) at the ratio of 0.3 to 1.8 moles of the component (a2) per 1 mole of the component (a1); (B) a (meth)acrylate mixture composed of a urethane adduct compound (b1) and a (meth)acrylate (b2), wherein the component (b1) is produced by the addition reaction of a (meth)acrylate that is derived from an aliphatic polyhydric alcohol having a valency of 3 or more and has at least two (meth)acryloyl groups and at least one hydroxy group with a polyisocyanate and the component (b2) has at least three (meth)acryloyl groups and has no hydroxy group; and (C) a radically polymerizable unsaturated compound having a nitrogen atom in the molecule.

Description

technical field [0001] The invention relates to an active energy ray-curable coating composition, and belongs to the technical field of active energy ray-curable compositions and coatings. Background technique [0002] In recent years, glass has been used in displays such as touch screens and smartphones, which are spreading rapidly, but research is underway to replace them with plastics in order to reduce weight and prevent glass from scatter when broken. [0003] In general, plastic substrates are light in weight, excellent in impact resistance and easy formability, etc., but have the disadvantage of being easily scratched on the surface and low in hardness, so when used as they are, the appearance is significantly damaged. Therefore, the surface of a plastic substrate is often coated with a coating composition to perform a so-called hard coat treatment to impart abrasion resistance, scratch resistance, and the like. [0004] Conventional coating compositions have used re...

Claims

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Application Information

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IPC IPC(8): C09D183/07C08F290/06C08F299/08C09D4/00C09D175/16
CPCC09D175/16C08F230/08C08F290/068C08G18/672C08G18/73C08G77/20C08G77/442C08L83/10C09D4/00C08F230/085C08F226/02
Inventor 小仓绢子北村昭宪古田尚正
Owner TOAGOSEI CO LTD
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