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Composition for hard coat and molded product provided with hard coat layer

A kind of hard coating and composition technology, applied in the field of hard coating compositions and molded articles formed with hard coatings, and can solve the problems of poor scratch resistance and abrasion resistance, etc.

Active Publication Date: 2014-02-12
KYOEISHA CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, acrylic resins are less scratch and abrasion resistant than usual silicon-based coatings

Method used

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  • Composition for hard coat and molded product provided with hard coat layer

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0095] Synthesis example 1 (synthesis of polyurethane (meth)acrylate resin A-1)

[0096] A stirring device, a thermometer and a cooling device are installed on the four-necked flask, and a polyisocyanurate compound (trade name produced by Japan Polyuretan Industry (KK) Co., Ltd.: Coronet HK, 210.0 g / equivalent) 415.8 of hexamethylene diisocyanate is added. Parts by weight are 288.2 parts by weight of an isocyanate compound constituting a polyurethane (meth)acrylate resin, pentaerythritol triacrylate (trade name produced by Kyoeisha Chemical Co., Ltd.: Light Acrylite PE-3A, 498.3 g / equivalent), and 288.2 parts by weight of acrylic acid 2 -Hydroxyethyl ester (trade name produced by Kyoeisha Chemical Co., Ltd.: Laito Acrylate HOA, 498.3 g / equivalent) 190.8 parts by weight as a hydroxyl-containing (meth)acrylate compound, 0.17 parts by weight of p-methoxyphenol, 0.17 parts by weight of BHT, react at 58-62°C for 3 hours, add 1 drop of dibutyltin dilaurate, and react at 58-62°C for ...

Synthetic example 2

[0098] Synthesis example 2 (synthesis of polyurethane (meth)acrylate resin A-2)

[0099] A stirring device, a thermometer and a cooling device are installed on the four-necked flask, and 73.4 weight of isocyanurate (trade name produced by Japan Polyuretan Industry Co., Ltd.: Coronet HK, 210.0 g / equivalent) of hexamethylene diisocyanate is added. 78.0 parts by weight of an isocyanate compound constituting a polyurethane (meth)acrylate resin, an ethylene oxide adduct of 2-hydroxyethyl acrylate (an adduct of 8 moles of ethylene oxide, 575.5 g / equivalent) With the compound of polyether polyol main chain, p-methoxyphenol 0.15 weight part, after reacting at 78~82 ℃ for 3 hours, add pentaerythritol triacrylate (trade name produced by Co. トPE-3A, 498.3g / equivalent) 148.7 parts by weight as a hydroxyl-containing (meth)acrylate compound and 1 drop of dibutyltin dilaurate, and then reacted at 78-82°C for 6 hours to synthesize polyurethane Acrylic resin.

[0100] Measure the infrared abs...

Embodiment 1

[0102] 3 parts by weight of resin synthesized in Synthesis Example 1, organosilicate sol solution (trade name produced by Fuso Chemical Industry Co., Ltd.: PL-1-IPA, particle diameter 10nm, isopropanol solution, solid content 12.5%) 24 parts by weight Parts, 4 parts by weight of pentaerythritol hexaacrylate (trade name produced by Kyoeisha Chemical Co., Ltd.: Light Acrylate PE-3A), hydroxycyclohexyl phenyl ketone (produced by Chiba Specsiyari Tei Chemical Cals Co., Ltd.: Irugakyua 184 ) 0.5 parts by weight and 3.5 parts by weight of isopropanol were kneaded to obtain a composition for a hard coat layer containing a resin component of about 30% by weight.

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Abstract

PURPOSE: A composition for hard coat is provided to maximally exhibit transparency and scratch resistance, to minimally suppress a curling property, and to impart a stable and excellent coating layer to the molded product. CONSTITUTION: A composition for hard coat comprises (A) a urethane (meth)acrylate resin, (B) a polyfunctional (meth)acrylate resin, and (C) metal oxide particles. The urethane (meth)acrylate resin is obtained by reacting an isocyanate compound, a hydroxyl group-containing (meth)acrylate compound, and a compound with polyether polyol in a main chain. The polyfunctional (meth)acrylate resin has at least two (meth)acryloyl groups within one molecule.

Description

technical field [0001] The present invention relates to a composition for a hard coat layer and a molded article on which a hard coat layer has been formed. More specifically, the present invention relates to a composition for a hard coat layer and a molded article on which a hard coat layer has been formed. Background technique [0002] All kinds of plastics have been used in many fields such as home appliances and the automobile industry. Plastic has various advantages such as light weight and low cost in addition to processability and transparency. However, compared with materials such as glass, it has disadvantages such as softness and easy damage to the surface. [0003] In order to improve these shortcomings, a technique of coating a hard coat material on the plastic surface to improve the scratch resistance of the surface without compromising the transparency and lightness of the plastic is being used. [0004] As such a hard coat material, for example, thermosetting...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14C09D7/12C08F290/06C09D4/02C09D175/16G02B1/10G02B1/14
CPCC09D133/06C09D175/06
Inventor 松田知也五岛学人内木场尊信
Owner KYOEISHA CHEM CO LTD