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Sulfonic acid type water-based polyurethane pressure-sensitive adhesive and preparation method thereof

A water-based polyurethane and pressure-sensitive adhesive technology, which is applied in the field of pressure-sensitive adhesives, can solve the problems of water-based polyurethane pressure-sensitive adhesives with reduced viscosity and no longer bonding, and achieves good initial viscosity, good hydrophilic performance, and good continuous adhesion. combined effect

Inactive Publication Date: 2019-03-01
INST OF NEW MATERIALS & IND TECH WENZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing water-based polyurethane pressure-sensitive adhesives have good initial viscosity, but as time goes by, the viscosity of water-based polyurethane pressure-sensitive adhesives will drop significantly, and they can no longer play the role of bonding, which limits their application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A sulfonic acid type water-based polyurethane pressure-sensitive adhesive, comprising the following components by weight:

[0037] 25 parts of isocyanate;

[0038] 50 parts of deionized water;

[0039] 10 parts of polymer glycols;

[0040] 8 parts of small molecular polyols;

[0041] 6 parts of chain extender;

[0042] 2 parts of stabilizer;

[0043] 4 parts of regulator;

[0044] 2 parts of blocking agent;

[0045] The chain extender is 8-aminonaphthalene-1,6-sodium disulfonate, 1,4-bis(butyryloxy)-2-butene and N-tris(hydroxymethyl)methyl-3- The mixture of sodium sulfamate, its mass ratio is 3:1:1.

[0046] The isocyanate is a mixture of isophorone diisocyanate, hexamethylene diisocyanate and trimethylhexamethylene diisocyanate, and its mass ratio is 7:2:1.

[0047] The polymer diol is a mixture of polyoxypropylene diol and polyallyl diglycol carbonate, the mass ratio of which is 1:1, and the number average molecular weight of the polymer diol is 2500-3500.

...

Embodiment 2

[0058] A sulfonic acid type water-based polyurethane pressure-sensitive adhesive, comprising the following parts by weight:

[0059] 20 parts of isocyanate;

[0060] 45 parts of deionized water;

[0061] 8 parts of polymer diol;

[0062] 6 parts of small molecule polyols;

[0063] 5 copies of chain extender;

[0064] 1 part of stabilizer;

[0065] 2 parts of conditioner;

[0066] 1 part of end capping agent;

[0067] The chain extender is sodium 8-aminonaphthalene-1,6-disulfonate, 1,4-bis(butyryloxy)-2-butene and N-tris(hydroxymethyl)methyl-3- The mixture of sodium aminopropanesulfonate, its mass ratio is 3:1:1.

[0068] The isocyanate is a mixture of isophorone diisocyanate, hexamethylene diisocyanate and trimethylhexamethylene diisocyanate, and its mass ratio is 7:2:1.

[0069] The polymer diol is a mixture of azelaic acid-1,2-propylene glycol polyester and polyethylene succinate, and its mass is 2:3, and the number-average molecular weight of the polymer diol is 25...

Embodiment 3

[0080] A sulfonic acid type water-based polyurethane pressure-sensitive adhesive, comprising the following parts by weight:

[0081] 30 parts of isocyanate;

[0082] 70 parts of deionized water;

[0083] 13 parts of polymer diols;

[0084] 9 parts of small molecule polyols;

[0085] 8 parts of chain extender;

[0086] 3 parts of stabilizer;

[0087] 5 parts of conditioner;

[0088] 3 parts of end capping agent;

[0089] The chain extender is sodium 8-aminonaphthalene-1,6-disulfonate, 1,4-bis(butyryloxy)-2-butene and N-tris(hydroxymethyl)methyl-3- The mixture of sodium aminopropanesulfonate, its mass ratio is 3:1:1.

[0090] The isocyanate is a mixture of isophorone diisocyanate, hexamethylene diisocyanate and trimethyl hexamethylene diisocyanate, and its mass ratio is 7:2:1.

[0091] The polymer diol is a mixture of polyallyl diethylene glycol carbonate and polyethylene succinate, and its mass ratio is 2:1, and the number-average molecular weight of the polymer diol is...

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PUM

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Abstract

The invention discloses a sulfonic acid type water-based polyurethane pressure-sensitive adhesive and a preparation method thereof. The sulfonic acid type water-based polyurethane pressure-sensitive adhesive takes a polymer composed of isocyanate, polymer diatomic alcohol, small molecular polyhydric alcohol and a chain extender as a main body of the pressure-sensitive adhesive, takes deionized water as a solvent, is free of toluene and other organic solvents, and is nontoxic, pollution-free and environment-friendly; the chain extender, a stabilizer, a regulator and a blocking agent are also added; a mixture of 8-naphthylamine-1,6-disulfonate sodium, 1,4-bis(butyryloxy)-2-butene and sodium N-tris(hydroxymethyl)methyl-3-aminopropane sulfonate is selected as the chain extender; under combinedaction of the three substances, a good chain extending effect is achieved, the length of a polymer is extended, the structure of the polymer is adjusted, and the chain extender has a synergistic effect with the polymer main body; and meanwhile, the prepared pressure-sensitive adhesive has certain temperature tolerance, the finally prepared pressure-sensitive adhesive has high initial viscosity and strong holding power, and the application range of the water-based polyurethane pressure-sensitive adhesive is greatly extended.

Description

technical field [0001] The invention relates to a pressure-sensitive adhesive, in particular to a sulfonic acid type water-based polyurethane pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] Pressure-sensitive adhesive, the abbreviation of pressure-sensitive adhesive, is a type of adhesive that is sensitive to pressure. It is mainly used to prepare pressure-sensitive tapes. Its function is to make the tape have pressure-sensitive adhesive properties. According to the composition of the main resin, pressure-sensitive adhesives can be divided into two types: rubber type and resin type. The rubber type can be divided into natural rubber and synthetic rubber; the resin type mainly includes acrylic, silicone and polyurethane. [0003] Water-based polyurethane (WPU) refers to a stable emulsion formed by dissolving or dispersing polyurethane (PU) in water. It uses polyurethane resin as the base material, uses water instead of organic solv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C09J175/08C09J175/06C09J11/06C08G18/75C08G18/73C08G18/44C08G18/48C08G18/32C08G18/42
CPCC08G18/3857C08G18/4018C08G18/4202C08G18/4238C08G18/44C08G18/4825C08G18/722C08G18/73C08G18/755C08G2170/80C09J11/06C09J175/04C09J175/06C09J175/08C08K5/005
Inventor 任宝东晁国库赵启樑赵亚娟袁开博
Owner INST OF NEW MATERIALS & IND TECH WENZHOU UNIV
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