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Primer and laminate including resin film formed from the primer

一种层叠体、底漆的技术，应用在合成树脂层状产品、涂层、底漆等方向，能够解决密合变差、基材与易粘接树脂层密合变差等问题，达到耐酸性优异、点再现性优异、密合性提高的效果

Active Publication Date: 2011-07-27
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When forming an easy-adhesive resin layer using polyol acrylate and isocyanate-based curing agent on a highly polar substrate or forming a highly polar layer on an easily-adhesive resin layer, store it under high humidity for a long time Or in the case of immersion in water, the adhesion between the base material and the easy-adhesive resin layer may deteriorate
In addition, even in a short period of time, when the bonding interface is kept wet with water, the adhesion may deteriorate.

Method used

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  • Primer and laminate including resin film formed from the primer
  • Primer and laminate including resin film formed from the primer
  • Primer and laminate including resin film formed from the primer

Examples

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Embodiment

[0101] Hereinafter, the present invention will be specifically described by way of examples and comparative examples.

[0102] (Preparation of Example Primers 1-7 and Comparative Example Primers 1-7)

[0103]The main ingredient solution (A) was prepared with the monomer compounding composition shown in Table 1 below. The solvent composition was adjusted to 70:14:6 of MEK, ethyl acetate, and propylene glycol monomethyl ether, and 10% of non-volatile components. Further, with the formula shown in Table 1, mixing the curing agent (B) and the compound (C) having two or more carboxylic acid groups or one or more carboxylic anhydride groups in one molecule, prepared Example primers 1 to 7, and compared Examples of primers 1-7.

[0104] [Table 1]

[0105]

[0106] In addition, the abbreviations in the table below are indicated as follows.

[0107] MMA: methyl methacrylate

[0108] AN: acrylonitrile

[0109] β-HEMA: β-hydroxyethyl methacrylate (the mark in the table omits β) ...

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Abstract

The present invention provides a primer and a laminate including a layer formed from the primer. The primer improves the tight adhesion between a base layer of wrapping material and a printing ink layer, a coating layer, or an adhesive layer, and thus serves to produce a laminate for wrapping which combines printability including both excellent transfer of printing ink and excellent reproduction of dots, easy adhesion, long-term storability under high humidity, and acid resistance. The primer is characterized by containing (A) a main component consisting of a copolymer prepared from monomers (a) and (b), said monomer(a) being an unsaturated compound having a hydroxyl group and said monomer(b) being at least one unsaturated compound selected from the group consisting of unsaturated carboxylic acid esters, styrene, unsaturated carboxylic acids, unsaturated hydrocarbons, vinyl esters, and vinyl halides, (B) a curing agent consisting of a compound having an isocyanate group, and (C) a compound having two or more carboxyl groups or one or more carboxylic anhydride groups in one molecule.

Description

technical field [0001] The present invention relates to a printing primer for obtaining a laminate having excellent adhesiveness, hot water resistance, and high-definition printability in the field of flexible packaging materials such as food and pharmaceuticals, and a coating film layer having the primer of stacks. Background technique [0002] In recent years, printing on various substrates has increased, but many substrates do not necessarily have excellent printability. Beautiful high-definition printing thereon is increasingly required. At the same time, from the viewpoint of protecting the contents, substrates for packaging materials are required to have various suitability such as heat resistance, steam resistance, water resistance, and gas barrier properties. [0003] In order to improve the printability, there are usually the following methods: (1) modify the surface of the substrate by corona discharge treatment, flame treatment, plasma treatment, thereby improvi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/30C09D133/20C09D5/00C09D133/12C09D133/10C09D175/04C09D125/04C09D133/14C09D7/12C09D201/04C09D201/08C09D133/02C09D201/06C09D133/08
CPCC08G18/7642C09D133/14C09D175/04C08G18/6254C09D5/002C08L33/12C08G18/755C08G18/6262C08G18/8025C08G18/0823C08K5/205C09J133/066C09D133/066C08L33/20Y10T428/31591Y10T428/31605C08K5/0025C09D201/02
Inventor 加贺谷浩之本间隆雄
Owner DIC CORP
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