Plastics

A coating agent and coating technology, which is applied in the direction of photosensitive materials used in optomechanical equipment, etc., can solve the problems of lack of structure and design freedom, and no record of surface dryness, etc.

Inactive Publication Date: 2013-03-20
DAI ICHI KOGYO SEIYAKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when this resin is applied to a coating agent for in-mold transfer, there is a problem of lack of freedom in structure and design when the purpose is to improve the adhesion to the base material that requires flexibility.
[0006] In addition, Patent Document 4 describes a technique for improving the refractive index and reducing the curing shrinkage rate using an energy beam-curable resin composition containing a certain urethane (meth)acrylate compound. , however, there is no record of surface dryness before curing

Method used

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Examples

Experimental program
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Effect test

manufacture example 1

[0064] 1. Manufacture of coating agent [Manufacture example 1] (manufacture of urethane acrylate A)

[0065] Add 1048 g (2 moles) of acrylate of bisphenol A type epoxy resin (manufactured by Mitsubishi Chemical Co., Ltd., jER828, glycidyl ethers, epoxy equivalent = 190 g / eq), hydroquinone monomethyl ether 0.6 g and 188 g (1 mole) of xylylene diisocyanate (XDI), which is an organic polyisocyanate, were reacted at 70 to 80°C until the residual isocyanate concentration was 0.1% or less.

manufacture example 2～5

[0066] [Manufacture examples 2 to 5] (Manufacture of urethane acrylates B to E)

[0067] It produced similarly to urethane acrylate A except having changed the addition amount of the acrylate of epoxy resin (Mitsubishi Chemical Corporation make, jER828) and xylylene diisocyanate as shown in Table 1.

manufacture example 6

[0068] [Manufacture Example 6] (Manufacture of Urethane Acrylate F)

[0069] 2620 g (5 moles) of acrylate of epoxy resin (manufactured by Mitsubishi Chemical Co., Ltd., jER828), 450 g ( 1OH equivalent), 2.0g of hydroquinone monomethyl ether, 940g (5 moles) of xylylene diisocyanate (XDI) as an organic polyisocyanate, and react at 70-80°C until the concentration of residual isocyanate is Below 0.1%.

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Abstract

The invention relates to a plastics, comprising polyurethane (methyl) acrylate compound (C) which is obtained by methacrylate compound (A) of epoxy resin which is a reactant of epoxy resin and (methyl) crylic acid reacting with at least organic polyisocyanate compound (B). A molar ratio NCO/OH of isocyanate groups of a component of (B) to hydroxyl of a component of (A) is lower than 1. A number-average molar mass of the polyurethane (methyl) acrylate compound (C) is 2000-20000. The plastics is coated on in-mold transfer printing films, and a coating is formed on a molded product after molding. Under a condition that only a solvent is volatilized, the plastics would not be tacky, and surface dry property is excellent.

Description

technical field [0001] The present invention relates to a film coating agent, and mainly relates to a coating agent which is applied to a film for in-mold transfer to form a coating layer on a molded article after molding. Background technique [0002] In-mold transfer printing, for example, is a process in which a pattern, etc. is applied to a base film by printing or vapor deposition, inserted into a mold, and the heat and pressure of injection molding are used to transfer the pattern, etc., to a molded product in the mold (Patent Documents 1, 2). This method has the advantages that post-processing after molding is almost unnecessary, processing preparation time can be shortened, and the risk of process defects is small. [0003] There are various methods for in-mold transfer, and one of them is to apply a coating agent to the tape base, dry it, insert it into a mold, inject resin into the mold, and then irradiate energy such as ultraviolet rays. A method of manufacturin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03F7/004C08G18/67
Inventor 北沢真希
Owner DAI ICHI KOGYO SEIYAKU CO LTD
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