Primer for plastic with inorganic film, plastic with inorganic film, decorative film for inner mold forming and decorative film for insert part forming

An inorganic thin film and primer technology, applied in the direction of coating, synthetic resin layered products, layered products, etc., can solve the problems of whitening parts, difficult to eliminate whitening, cracks, poor appearance of inorganic film surface, etc., to achieve gloss excellent effect

Inactive Publication Date: 2011-08-31
ARAKAWA CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, for plastics with inorganic films, regardless of their shape, there is a problem of whitening sites on the surface of the inorganic film at high temperatures.
In addition, when the plastic with an inorganic thin film is in the form of a film, in the case of forming and processing under high temperature conditions, not only whitening parts will occur on the inorganic thin film surface of the non-processed part, but also interference fringes and Cracks that can be judged visually damage the technical performance (gas barrier properties, electromagnetic wave shielding properties, etc.) and design of inorganic thin films
[0004] Regarding the problem of cracking, it is known that, for example, in Patent Document 1, it can be solved by a three-component primer containing an acrylic resin, a melamine resin, and a polyisocyanate compound, but there is no mention of the whitening phenomenon.
In addition, as the base resin of the primer, polyurethane resin or polyester resin is sometimes used, but in the case of using such a primer, the appearance of the inorganic thin film surface is poor, and it is difficult to eliminate the above-mentioned whitening, Cracks and other issues

Method used

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  • Primer for plastic with inorganic film, plastic with inorganic film, decorative film for inner mold forming and decorative film for insert part forming
  • Primer for plastic with inorganic film, plastic with inorganic film, decorative film for inner mold forming and decorative film for insert part forming
  • Primer for plastic with inorganic film, plastic with inorganic film, decorative film for inner mold forming and decorative film for insert part forming

Examples

Experimental program
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Effect test

Embodiment

[0054] Hereinafter, the present invention will be described in more detail through examples and comparative examples, but the present invention is not limited thereto. In addition, "part" in an Example shows a weight standard.

[0055] In each example, the glass transition temperature is a value measured using a commercially available measuring instrument (product name "DSC8230B", manufactured by Rigaku Denki Co., Ltd.). In addition, the number average molecular weight is the value measured using the commercially available gel permeation chromatography instrument (manufacture name "HLC-8220GPC", manufactured by Tosoh Corporation).

[0056]

manufacture example 1

[0058] To a reaction vessel equipped with a stirring device, a thermometer, a reflux condenser, a dropping funnel, and a nitrogen introduction tube, add a commercially available carboxyl-containing styrene acrylic acid copolymer (product name "ARUFON-UC3920", Toagosei Co., Ltd. Production, non-volatile content 100%, (a1) component is acrylic acid, (a2) component is styrene) 500.0 parts, isopropyl alcohol (hereinafter referred to as IPA) 150.0 parts, ion-exchanged water (hereinafter referred to as IW) 2055.6 parts, 28% ammonia water (hereinafter referred to as 28% NH 3 ) 155.8 parts, kept at 45°C for 3 hours to obtain a product with a glass transition temperature (hereinafter referred to as Tg) of 104°C, a carboxylate anion group content (hereinafter referred to as CA) of 4.3mmol / g, and a weight-average molecular weight (hereinafter referred to as The solution of the (A-1) component whose Mw) is 15500 (20% of non-volatile matter (it calls NV hereafter)).

manufacture example 2

[0060] Into the same reaction vessel as in Production Example 1, 16.8 parts of methacrylic acid (hereinafter referred to as MAA), 151.2 parts of methyl methacrylate (hereinafter referred to as MMA), 2-hydroxyethyl methacrylate (hereinafter referred to as 72 parts of 2-HEA), 1.2 parts of 2,2'-azobis(methylbutyronitrile) (hereinafter referred to as ABN-E), 360 parts of IPA, kept at 80°C for 5 hours under nitrogen flow (the above is pre-polymerization process). Next, 2.4 parts of ABN-E were added, and the reaction system was further kept at the same temperature for 3 hours (the above is the post-polymerization step). Next, 288.2 parts of IPA, 288.2 parts of IW, and 23.6 parts of triethylamine (hereinafter referred to as TEA) were added and neutralized (the above is a neutralization and dilution step). Table 1 shows the physical properties of the component (A-2) thus obtained.

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Abstract

The invention provides a novel primer for producing a plastic with an inorganic film, which is closely connected to the inorganic film and a plastic substrate, and will not generate cracks that can be seen by eyes, interference fringes and obvious whitening parts on the inorganic film even the plastic with inorganic film is processed under high temperature. The primer uses an acrylic acid copolymer (A) having carboxylate anion group with a vitrification temperature of minus 5-120 DEG and a polyaziridine compound (B) having at least three aziridinyls.

Description

technical field [0001] The present invention relates to a primer for bonding an inorganic thin film layer to a plastic substrate, a plastic with an inorganic thin film, a decorative film for in-mold molding, and a decorative film for insert molding. Background technique [0002] Conventionally, composite substrates obtained by coating a primer on the surface of a plastic substrate and then forming an inorganic thin film composed of aluminum, tin, etc. It can be preferably used as packaging materials such as bottles, caps and gas barrier films, transparent conductive sheets, film capacitors, etc., depending on the thickness and thickness. In addition, among film-shaped plastics with an inorganic thin film, plastics having an extremely thin aluminum layer of about several tens of nm are widely used as members for decorative films (also called transfer foils). [0003] However, plastics with an inorganic thin film have a problem of producing whitening sites on the surface of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D133/02C09D133/12C09D133/08C09D7/12B32B27/06
CPCC09D133/06C09D133/14C08L33/08C09D7/60C08J7/0423C08J7/043C08J5/18
Inventor 山崎彰宽东本彻
Owner ARAKAWA CHEM IND LTD
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