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Antistatic agent for adhesive

A technology of antistatic agent and adhesive, applied in the direction of adhesive type, non-polymer adhesive additive, adhesive additive, etc., can solve the problems of ionic compound exudation, surface resistance value increase, etc., and achieve durability excellent effect

Active Publication Date: 2020-06-23
DAI ICHI KOGYO SEIYAKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, if an adhesive containing an ionic compound is stored under high-temperature and high-humidity conditions, the surface resistance value increases over time due to the diffusion and movement of the ionic compound, or the ionic compound oozes out to the surface.

Method used

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  • Antistatic agent for adhesive
  • Antistatic agent for adhesive
  • Antistatic agent for adhesive

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0084]

[0085] ((Meth) acrylic copolymer A)

[0086] After nitrogen is sealed in a reactor equipped with a stirrer, a thermometer, a reflux condenser, a dropping device, and a nitrogen conduit, 70 parts of ethyl acetate, 15 parts of acetone, 62.5 parts of butyl acrylate, 19.0 parts of phenoxyethyl acrylate, 16.0 parts of methyl acrylate, 1.5 parts of acrylic acid, 1.0 part of 2-hydroxyethyl acrylate and 0.1 part of 2,2'-azobisisobutyronitrile as an azo polymerization initiator (Wako Pure Chemical Industries, Ltd., Trade name V-60). While stirring, it was reacted for 8 hours at the reflux temperature of the solvent in a nitrogen stream. After the completion of the reaction, 315 parts of toluene was added and cooled to room temperature to prepare a polymer solution with a solid content of 20% by weight. The obtained (meth)acrylic copolymer A had a viscosity of 7000 mPa·s and a weight average molecular weight (Mw) of 1.35 million.

[0087]

[0088] (Ionic compound C-1)

[0089] In ...

Embodiment 1

[0128]

[0129] To 100 parts by weight (solid content conversion value) of the (meth)acrylic copolymer A solution, 1.5 parts by weight (solid content conversion value) of the ionic compound C-1 was added and stirred. In addition, 0.08 parts by weight (solid content conversion value) of crosslinking agent B [biuret type of hexamethylene diisocyanate (manufactured by Asahi Kasei Kogyo Co., Ltd., trade name Duranate 24A-100)] was mixed to obtain an adhesive composition for evaluation .

[0130]

[0131] Coat the peeling-treated polyethylene terephthalate film (PET film) with the adhesive composition for evaluation prepared above to make the dry coating film thickness 20μm, dry at 90°C for 4 minutes, and turn It was printed on a triacetyl cellulose film (TAC film) and maintained for 7 days in an atmosphere of 20°C and 65% RH to obtain an adhesive sheet for evaluation.

[0132] Using the obtained pressure-sensitive adhesive sheet for evaluation, durability evaluation was performed, and...

Embodiment 2～6

[0133] [Examples 2 to 6, Comparative Examples 1 to 4]

[0134] The type of the ionic compound in Example 1 was changed according to the content described in Table 1, except that the same procedure as in Example 1 was carried out to prepare and produce an adhesive composition for evaluation and an adhesive sheet for evaluation, and the durability was evaluated. . The results are shown in Table 1.

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Abstract

An object of the present invention is to provide an antistatic agent for adhesives that is excellent in durability even under high-temperature and high-humidity conditions. The antistatic agent for adhesives of the present invention contains an ionic compound, and the cationic portion of the ionic compound is a cation represented by any one of the following formulas (1) to (3), [Chem. 1] [Chem. 2] [Chem. ] Among them, in the above formulas (1) to (3), R 1 Represents a hydrocarbon group with a carbon number of 1 to 18, which can contain heteroatoms; R 2 Represents a hydrocarbon group with 2 or more and 4 or less carbon atoms, multiple R 1 or R 2 can be the same or different, respectively.

Description

Technical field [0001] The invention relates to an antistatic agent for adhesives. Background technique [0002] Generally speaking, static electricity refers to the phenomenon that an object is charged by storing charges, or refers to the charged charge itself. In addition to the accumulation of electric charges generated by the friction of two types of dielectrics, static electricity also refers to the occurrence of contact with a charged object and the accumulation on the surface of an object. The above-mentioned static electricity can cause the inhalation of foreign matter such as dust, the electrostatic destruction of equipment, the malfunction of measuring equipment, or the fire. In addition, the current electromagnetic device is very likely to be temporarily or permanently damaged due to the discharge of static electricity. [0003] For example, in a liquid crystal panel, in order to bond a polarizing plate, a phase difference plate, and a glass substrate of a liquid cryst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J11/06C09J133/08
CPCC09J11/06C09J133/08C08K5/42C08K2201/014C09K3/16
Inventor 村上贤志齐藤恭辉三浦佑嗣
Owner DAI ICHI KOGYO SEIYAKU CO LTD