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Resin composition for adhesive and adhesive sheet

A technology of resin composition and adhesive, which is applied in the direction of adhesive, adhesive type, ester copolymer adhesive, etc., and can solve the problem of damage to the characteristics of vinyl monomer units

Inactive Publication Date: 2019-07-16
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when only two or more kinds of vinyl monomers are copolymerized, there is a tendency that the properties of each vinyl monomer unit are averaged
In addition, if only two or more polymers are mixed, these polymers are not sufficiently blended with each other, and the properties of each vinyl monomer unit are often impaired.

Method used

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  • Resin composition for adhesive and adhesive sheet
  • Resin composition for adhesive and adhesive sheet
  • Resin composition for adhesive and adhesive sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0379] Hereinafter, the present invention will be explained in further detail through examples, but the following examples do not limit the scope of the present invention. In the following examples, "parts" means "parts by mass".

[0380] The measurement method used in each example is shown below.

[0381]

[0382] (Number average molecular weight of macromonomer)

[0383] The number average molecular weight (Mn) of the macromonomer is measured using a gel permeation chromatography (GPC) device (manufactured by Tosoh Corporation, HLC-8320). A 0.2% by mass tetrahydrofuran (THF) solution of the macromonomer was prepared, and 10 μL of the above solution was injected into the above-mentioned device equipped with Tosoh Corporation’s columns (TSKgel SuperHZM-M×HZM-M×HZ2000, TSKguardcolumn SuperHZ-L) to Flow rate: 0.35 mL / min, eluent: THF (stabilizer: butyl hydroxytoluene (BHT)), column temperature: 40° C. The measurement was performed, and the number average molecular weight was calculat...

manufacture example 2～9

[0412] The solvent (dropping solvent) and monomer (dropping monomer) in the mixture of initial addition of solvent, initial addition of monomer, and dropwise addition after heating are changed as shown in Table 2. In addition, the same as the examples 1 In the same manner, copolymer solutions (A-2) to (A-9) were obtained.

[0413] The weight average molecular weight (Mw) of the copolymer in the copolymer solution obtained from each example, the half-width X of the one-dimensional scattering peak in the small-angle X-ray scattering measurement (SAXS) and the peak position Y of the one-dimensional scattering pattern are shown in the table 2 in.

[0414]

[0415] 80 parts of the copolymer solution (A-1) was desolvated so that the solid content became 99% or more, 60 parts of isodecyl acrylate (IDAA), crosslinking agent (PETA: Shin Nakamura Chemical, trade name "NK ESTER TMM-3L", pentaerythritol triacrylate) 10 parts, photopolymerization initiator (manufactured by BASF, trade name "IR...

Embodiment 2

[0436] Except that the copolymer used was changed to the copolymer described in Table 3, the same procedure as in Example 1 was carried out to prepare an adhesive resin composition to prepare an adhesive sheet, and evaluate the adhesive force, retention force, and resistance to substrate Polluting.

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PUM

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Abstract

Provided are: a resin composition for an adhesive, the resin composition having a sufficient holding force and a proper adhesive force and being capable of forming an adhesive layer that can suppresssubstrate staining caused by adhesive residue; and an adhesive sheet. The resin composition for an adhesive comprises a (meth) acrylic copolymer (A) that includes constituent units derived from macro-monomer (a), and constituent units derived from a vinyl monomer (b), wherein: the macro-monomer (a) includes two or more constituent units represented by formula (a') and is represented by formula (1); the vinyl monomer (b) includes alkyl (meth)acrylate (b1) that includes an alkyl group having 8 or more carbon atoms; and the full width half maximum X of a primary peak measured by a small-angle X-ray scattering measurement of the (meth)acrylic copolymer (A) satisfies formula (i): (i): 0<X<=0.12 (wherein , R1 denotes a hydrogen atom, a methyl group, or CH2OH; R2 denotes OR3, a halogen atom, COR4, COOR5, CN, CONR6R7, NHCOR8 or R9, Q denotes a main chain portion including two or more constituent units (a'), and Z denotes a terminal group).

Description

Technical field [0001] The present invention relates to a resin composition for an adhesive and an adhesive sheet. [0002] This application claims priority based on Japanese Patent Application No. 2016-235193 filed in Japan on December 2, 2016, and the content is used herein. Background technique [0003] In the past, by homopolymerizing vinyl monomers or copolymerizing two or more kinds of vinyl monomers, various copolymers with different physical properties were synthesized. Generally speaking, a homopolymer of a vinyl monomer cannot satisfy various physical property requirements, so a method of copolymerizing two or more vinyl monomers or mixing two or more polymers is used. However, when only two or more kinds of vinyl monomers are copolymerized, there is a tendency that the characteristics of each vinyl monomer unit are averaged. In addition, when only two or more kinds of polymers are mixed, these polymers are not sufficiently blended with each other, and the characteristi...

Claims

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Application Information

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IPC IPC(8): C09J133/04C08F265/04C08F290/04C09J7/10C09J7/30
CPCC08F265/04C08F290/04C09J7/00C09J133/04C09J2301/312
Inventor 增田绘理中村淳一小高一义品田弘子
Owner MITSUBISHI CHEM CORP
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