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Water dispersive pressure sensitive adhesive composition and pressure sensitive adhesive product

A pressure-sensitive adhesive, pressure-sensitive adhesive layer technology, applied in the direction of adhesive types, polyether adhesives, natural rubber adhesives, etc., can solve the problem of insufficient pressure-sensitive adhesive adhesion, pollution , can not get satisfactory performance and other problems

Inactive Publication Date: 2006-08-30
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, satisfactory performances such as contamination caused by dissolved low-molecular components at the time of peeling as a result of water absorption / swelling, and insufficient internal adhesion of the pressure-sensitive adhesive, thus leaving residues at the time of peeling lower adhesive residue

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Add 2 parts of polyethylene glycol (weight average molecular weight 50,000) and 0.3 part of oil-soluble epoxy cross-linking agent (trade name: " Tetrad C " in the pressure-sensitive adhesive A of 100 weight parts on dry basis, by Mitsubishi Gas Chemimcal Company, Inc.). Apply the resulting composition to a basis weight of 30 g / m 2 on one side of Japanese paper (base material) having a thickness of 20 μm on a dry basis, and the coating was dried. Thus, a pressure-sensitive adhesive tape was obtained.

Embodiment 2

[0054] Add 10 parts of polyvinylpyrrolidone (weight average molecular weight 900,000) and 0.3 parts of oil-soluble epoxy crosslinking agent (trade name: "Tetrad C" to 100 parts by weight of pressure-sensitive adhesive A on a dry basis). , manufactured by Mitsubishi Gas Chemimcal Company, Inc.). Apply the resulting composition to a basis weight of 30 g / m 2 on one side of Japanese paper (base material) having a thickness of 20 μm on a dry basis, and the coating was dried. Thus, a pressure-sensitive adhesive tape was obtained.

Embodiment 3

[0056] Add 10 parts of polyethylene glycol (weight-average molecular weight 1,000) and 0.3 parts of oil-soluble epoxy crosslinking agent (trade name: "Tetrad C" from 100 parts by weight of pressure sensitive adhesive A on a dry basis) Mitsubishi Gas Chemimcal Company, Inc.). Apply the resulting composition to a basis weight of 30 g / m 2 on one side of Japanese paper (base material) having a thickness of 20 μm on a dry basis, and the coating was dried. Thus, a pressure-sensitive adhesive tape was obtained.

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PUM

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Abstract

An aqueous dispersion type pressure-sensitive adhesive composition contains an acrylic or rubber-based pressure-sensitive adhesive composition of the aqueous dispersion type and at least one hydrophilic polymer selected from the group consisting of polyalkylene glycols, polyvinylpyrrolidone, poly(vinyl alcohol)s, and poly((meth)acrylic acid), the amount of the hydrophilic polymer being from 0.5 to 15 parts by weight per 100 parts by weight, on a solid basis, of the acrylic or rubber-based pressure-sensitive adhesive composition of the aqueous dispersion type, and a pressure-sensitive adhesive product has a pressure-sensitive adhesive layer formed from the aqueous dispersion type pressure-sensitive adhesive composition.

Description

technical field [0001] The present invention relates to aqueous dispersion type pressure-sensitive adhesive compositions and pressure-sensitive adhesive products. Background technique [0002] Pressure-sensitive adhesives are widely used in label tapes, double-sided pressure-sensitive adhesive tapes, packaging tapes, and the like. From the perspectives of protecting the environment, saving resources, and safety, it has been proposed to develop water-dispersion-type pressure-sensitive adhesives that do not contain surface protective films and organic solvents, and the amount of water-dispersion-type pressure-sensitive adhesives to be used tends to be Increase. Among such aqueous dispersion-type pressure-sensitive adhesives, water-dispersed rubber-based pressure-sensitive adhesives have the advantages of low restriction of selectivity to adherends and excellent low adhesion, and thus are currently most widely used. Water-dispersed acrylate-based pressure-sensitive adhesives ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/02C09J7/02C09J133/00C08L29/04C08L33/06C08L39/06C08L71/00C09J107/00C09J129/04C09J133/08C09J133/10C09J145/00C09J171/02
CPCC08L29/04C08L39/06C09J7/0214C09J7/0217C09J2201/606C08L71/00C09J133/08C08L33/06C08L2666/02C09J7/383C09J7/385C09J2301/302C09J133/10
Inventor 户崎裕长津秀树河野真一矢田贝隆浩
Owner NITTO DENKO CORP