Aqueous silylated urethane composition, aqueous adhesives for wrapping, and aqueous contact adhesives

A water-based composition, polyurethane-based technology, applied in the direction of adhesives, etc., can solve the problems of not being able to say enough, and the scope of use is limited.

Inactive Publication Date: 2007-08-08
KONISHI CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this silylated polyurethane-based water-based composition, since an alkoxysilyl-terminated polymer containing anionic groups is used, the time to achieve adhesion and the adhesive force are better than conventional water-based adhesives. Although it has been improved, it cannot be said to be sufficient when compared with solvent-based adhesives, so it can be said that the range of use is limited.

Method used

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  • Aqueous silylated urethane composition, aqueous adhesives for wrapping, and aqueous contact adhesives
  • Aqueous silylated urethane composition, aqueous adhesives for wrapping, and aqueous contact adhesives
  • Aqueous silylated urethane composition, aqueous adhesives for wrapping, and aqueous contact adhesives

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0212] Mix polyol (A1-a): 150 parts, polyol (A2-b): 20 parts, polyol (A3-a) in a 4-neck flask equipped with a nitrogen inlet tube, thermometer, condenser, and stirring device : 8 parts, polyisocyanate (A4-a): 75.2 parts and methyl ethyl ketone (MEK): 100 parts, carried out the reaction for 6 hours at a temperature of 80 to 85° C. under a nitrogen stream to obtain a carboxyl group-containing and Reaction mixture of isocyanate-terminated polyurethane prepolymers with tertiary amino groups.

[0213] Next, in the total amount of the reaction mixture of the isocyanate group-terminated polyurethane prepolymer containing carboxyl groups and tertiary amino groups, 6.5 parts of alkoxysilanes (A5-a) containing amino groups: The reaction was carried out under temperature and nitrogen flow for 1 hour to obtain a reaction mixture containing isocyanate groups containing carboxyl groups and tertiary amino groups and alkoxysilyl-terminated polyurethane prepolymers.

[0214] Furthermore, afte...

Embodiment 2～13

[0216] Except having made the composition shown in Table 1 or 2, it carried out similarly to Example 1, and obtained the silylated polyurethane type aqueous composition which concerns on Examples 2-13, respectively.

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Abstract

An aqueous silylated urethane composition useful as an aqueous adhesive which is highly safe, develops excellent tack in a short time, and is excellent in initial bond strength. The aqueous silylated urethane composition is characterized by comprising (A) an alkoxysilyl-terminated urethane prepolymer having an anionic group and a tertiary amino group which prepolymer is produced by reacting a polyol compound (A1) free from anionic groups, a polyol compound (A2) having an anionic group, a compound (A3) having a tertiary amino group and an isocyanate-reactive group, a polyisocyanate compound (A4), an alkoxysilane compound (A5) having an isocyanate-reactive group, and an amine chain extender (A6), (B) a basic compound, and (C) water.

Description

technical field [0001] The present invention relates to a silylated polyurethane water-based composition, a water-based encapsulating adhesive, and a water-based contact adhesive. More specifically, it relates to high safety and a short time required to express excellent adhesion , a silylated polyurethane-based aqueous composition, an aqueous encapsulating adhesive, and an aqueous contact adhesive that exhibit excellent initial adhesiveness and productivity equivalent to that of solvent-based adhesives. Background technique [0002] Conventionally, solvent-type polyurethane resin-based adhesives excellent in initial adhesiveness and cohesive force have been mainly used as adhesives for encapsulation. However, in recent years, there has been a demand for highly safe adhesives from the viewpoint of environmental issues, disease-causing housing issues, and the like. Therefore, although various water-based adhesives have been proposed so far as adhesives for encapsulation, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/38C08L75/04C08K5/17C09J175/04C09J201/10
Inventor 原田邦治森茂树福本好央
Owner KONISHI CO
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