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Nanometer waterborne polyurethane adhesive and preparation method therefor

A water-based polyurethane and adhesive technology, applied in the field of fine chemicals, can solve problems affecting a wide range of applications

Inactive Publication Date: 2015-10-14
SUZHOU POLYMER NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This defect largely hinders its wide application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Nano water-based polyurethane adhesive, the components and the parts by mass of each component are as follows: 20 parts of polycaprolactone diol, 10 parts of isophorone diisocyanate, 2 parts of trihydroxy polyether, dibutyl phthalate 3 parts of ester, 0.2 part of dibutyltin dilaurate, 0.1 part of ethylene glycol ethyl ether acetate, 0.3 part of trimethylolpropane triester, 0.2 part of hydroxyethyl dodecyl alcohol, 0.3 part of lysine diisocyanate, 5 parts of glycerol, 1 part of triethylamine, 1 part of sodium alkylbenzene sulfonate, 2 parts of sodium dodecylbenzene sulfonate, 1 part of curing agent benzoyl peroxide, 20 parts of water.

[0024] The preparation method comprises the steps of:

[0025] 1) Under nitrogen protection, add isophorone diisocyanate and polycaprolactone diol into a four-neck flask, add dibutyltin dilaurate dropwise at a rate of 2 mL / min, and stir the reaction at a speed of 70 rpm 2h;

[0026] 2) Add trihydroxypolyether, dibutyl phthalate, ethylen...

Embodiment 2

[0030] Nano water-based polyurethane adhesive, the components and the parts by mass of each component are as follows: 30 parts of polycaprolactone diol, 15 parts of isophorone diisocyanate, 6 parts of trihydroxy polyether, dibutyl phthalate 6 parts of ester, 0.8 part of dibutyltin dilaurate, 0.3 part of ethylene glycol ethyl ether acetate, 0.9 part of trimethylolpropane triester, 0.5 part of hydroxyethyl dodecyl alcohol, 0.7 part of lysine diisocyanate, 10 parts of glycerol, 4 parts of triethylamine, 3 parts of sodium alkylbenzene sulfonate, 5 parts of sodium dodecylbenzene sulfonate, 2 parts of curing agent benzoyl peroxide, 40 parts of water.

[0031] The preparation method comprises the steps of:

[0032] 1) Under nitrogen protection, add isophorone diisocyanate and polycaprolactone diol into a four-neck flask, add dibutyltin dilaurate dropwise at a rate of 2 mL / min, and stir the reaction at a speed of 70 rpm 2h;

[0033] 2) Add trihydroxypolyether, dibutyl phthalate, eth...

Embodiment 3

[0037] Nano water-based polyurethane adhesive, the components and the parts by mass of each component are as follows: 25 parts of polycaprolactone diol, 12.5 parts of isophorone diisocyanate, 4 parts of trihydroxy polyether, dibutyl phthalate 4.5 parts of ester, 0.5 part of dibutyltin dilaurate, 0.2 part of ethylene glycol ether ester, 0.6 part of trimethylolpropane triester, 0.35 part of hydroxyethyl dodecyl alcohol, 0.5 part of lysine diisocyanate, 8 parts of butanediol, 2.5 parts of triethylamine, 2 parts of sodium alkylbenzene sulfonate, 3.5 parts of sodium dodecylbenzene sulfonate, 1.5 parts of aqueous isocyanate, 30 parts of water.

[0038] The preparation method comprises the steps of:

[0039] 1) Under nitrogen protection, add isophorone diisocyanate and polycaprolactone diol into a four-neck flask, add dibutyltin dilaurate dropwise at a rate of 2 mL / min, and stir the reaction at a speed of 70 rpm 2h;

[0040] 2) Add trihydroxypolyether, dibutyl phthalate, ethylene g...

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Abstract

The invention discloses a nanometer waterborne polyurethane adhesive and a preparation method therefor. The nanometer waterborne polyurethane adhesive comprises the following components in parts by weight: 20-30 parts of polycaprolactone diol, 10-15 parts of isophorone diisocyanate, 2-6 parts of polyether triol, 3-6 parts of dibutyl phthalate, 0.2-0.8 part of dibutyltin dilaurate, 0.1-0.3 part of ethylene glycol monomethyl acetate, 0.3-0.9 part of trimethylolpropane trimester, 0.2-0.5 part of ethoxy lauryl alcohol, 0.3-0.7 part of lysine-di-isocyanate, 5-10 parts of polyhydric alcohols, 1-4 parts of polyamine, 1-3 parts of sodium alkyl benzene sulfonate, 2-5 parts of sodium dodecyl benzene sulfonate, 1-2 parts of curing agent and 20-40 parts of water. A sulfonate radical hydrophilic chain extender is adopted in the adhesive, the water resistance is improved, the cross-linking agents such as polyhydric alcohols and polyamine are added in a polyurethane system, and the adhesive strength of the adhesive is improved.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and in particular relates to a nanometer water-based polyurethane adhesive and a preparation method thereof. Background technique [0002] my country is the largest shoe-making country in the world. At present, the annual output of adhesive shoes is more than 2 billion pairs. Most of the shoe manufacturing industry (95%) use neoprene adhesives, which have good initial viscosity and can be cooled. Sticky, low price, but its resistance to plasticizer penetration is poor, and it has poor adhesion to new shoe materials such as PU leather, thermoplastic rubber, soft PVC, etc. This product is even more fatal because it uses benzene compounds as solvents, which are not only toxic, Moreover, it is flammable and has not adapted to the requirements of the development of the footwear industry. At present, the graft neoprene adhesive of the third-generation shoe adhesive without benzene solvents adopts...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C09J175/08C08G18/10C08G18/34C08G18/32C08G18/42C08G18/48C08G18/66C08G18/77C08G18/75C08G18/38
Inventor 翟红波杨振枢韦洪屹
Owner SUZHOU POLYMER NEW MATERIALS TECH
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