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 resistan

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0168] Example

[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, in the following, "part" means "weight part", and "%" means "weight%".

[0171] 1. Manufacture of ingredient (A)

Example Embodiment

[0172] Production Example 1 (Production of MAC-TQ)

[0173] Into a reactor equipped with a stirrer and a thermometer, 150 g of 1-propanol for alcohol exchange reaction and 36.53 g (0.24 mol) of tetramethoxysilane (hereinafter referred to as "TMOS") were charged, and these were slowly stirred while stirring. 4.37 g of 25% tetramethylammonium hydroxide methanol solution (0.1 mol of methanol, 12 mmol of tetramethylammonium hydroxide) was added, and the reaction was carried out at a temperature of 25° C. and pH 9 for 6 hours. Then, the internal temperature was set to 60° C., and the reaction was further performed for 1 hour while stirring. Here, the reaction solution was analyzed by gas chromatography (TCD detector), and as a result, 1 to 4 methoxy groups contained in TMOS were detected in which 1-4 methoxy groups were substituted with n-propoxy groups. 4 Substituents of each compound and unreacted TMOS. Only trace amounts of TMOS were detected. The ratio of the n-propoxy-conta...

Example Embodiment

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

[0180] A mixture of pentaerythritol triacrylate (hereinafter referred to as "PETri") and pentaerythritol tetraacrylate (hereinafter referred to as "PETet") (containing 0.3 mol of PETri and PETet 0.2mol), "Aronics M-305" (trade name, hereinafter referred to as "M-305") 159.2 g, 2,6-di-tert-butyl-4-methylphenol (hereinafter referred to as 0.092 g of "BHT") and 0.055 g of dibutyltin dilaurate (hereinafter referred to as "DBTL"), and the liquid temperature was set to 70 to 75°C, and hexamethylene diisocyanate was added dropwise while stirring them. (hereinafter referred to as "HDI") 25.2 g (0.15 mol) was reacted.

[0181] After completion of the dropping of HDI, the internal temperature was set to 80° C., the reaction was continued, and the mixture was stirred for 3 hours. Subsequently, the disappearance of the isocyanate group was confirmed by IR (infrared absorption) analysis of the reaction product, and the reaction was t...

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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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