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High solid content polyurethane emulsion containing alicyclic sulfonic acid type hydrophilic chain extending agent and preparation method thereof

A technology of hydrophilic chain extender and polyurethane emulsion, applied in the field of polyurethane emulsion, can solve the problems of poor heat resistance and hydrolysis resistance, limited application, unreachable solid content and heat resistance of polyurethane emulsion, and achieve good heat resistance and hydrolysis resistance

Active Publication Date: 2009-12-09
ZHUHAI YUTIAN CHEM PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the currently commercially available polyurethane emulsions have a solid content of less than 50%, and some products have poor heat resistance and hydrolysis resistance, which limits their application in shoemaking and other industries.
[0006] There are also many research reports on polyurethane emulsions, such as U.S. Patent U.S.Pat.4,870,129, September 26,1989, which uses dimethylol propionic acid and N-(2-amino)-2-aminoethanesulfonic acid sodium [2- (2-amino)-2-aminoethanesulfonic acid sodium] as hydrophilic chain extender, obtain the polyurethane emulsion that solid content is below 50%, except adopting the more expensive isophorone diisocyanate of price, use other two The heat-resistant temperature of the polymer made of isocyanate is below 80°C, so the solid content and heat resistance of the polyurethane emulsion prepared by this patent cannot meet the requirements for the preparation of high-performance water-based polyurethane adhesives and coating products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment A

[0033] Embodiment A Sulfonic acid type hydrophilic chain extender

[0034] The sulfonic acid type hydrophilic chain extender of the present embodiment is formed by reacting the following substances by weight percentage:

[0035] Ethylenediamine: 11.5

[0036] Sodium vinyl sulfonate (25% aqueous solution): 100

[0037] The specific preparation process of the sulfonic acid type hydrophilic chain extender of the present embodiment is as follows:

[0038] Add aqueous solution of sodium vinylsulfonate and ethylenediamine to the reaction kettle, and stir and react at 60°C for 15 hours to obtain the aqueous solution of the target product 2-(2-amino)-2-aminoethanesulfonic acid sodium, 2-(2 The content of sodium -amino)-2-aminoethanesulfonate is about 32.7%.

Embodiment B

[0039] Embodiment B Sulfonic acid type hydrophilic chain extender

[0040] The sulfonic acid type hydrophilic chain extender of the present embodiment is formed by reacting the following substances by weight percentage:

[0041] Isophorone diamine: 32.7

[0042] Sodium vinyl sulfonate (25% aqueous solution): 100

[0043] The specific preparation process of the sulfonic acid type hydrophilic chain extender of the present embodiment is as follows:

[0044] Sodium vinyl sulfonate aqueous solution and isophorone diamine were added to the reaction kettle, stirred and reacted at 60°C for 15 hours to obtain the target product 2-[(5-amino-1,3,3-trimethyl-cyclo Hexylmethyl)-amino]-sodium ethanesulfonate, the content of 2-[(5-amino-1,3,3-trimethyl-cyclohexylmethyl)-amino]-sodium ethanesulfonate is about 43.5%.

Embodiment C

[0045] Example C Sulfonic acid type hydrophilic chain extender

[0046] The sulfonic acid type hydrophilic chain extender of the present embodiment is formed by reacting the following substances by weight percentage:

[0047] 4,4'-bisaminocyclohexylmethane: 40.4

[0048] Sodium vinyl sulfonate (25% aqueous solution): 100

[0049] The specific preparation process of the sulfonic acid type hydrophilic chain extender of the present embodiment is as follows:

[0050] Put sodium vinyl sulfonate aqueous solution and 4,4'-bisaminocyclohexylmethane into the reaction kettle, stir and react at 60°C for 15 hours to obtain the target product 2-[4-(4-amino-cyclohexylmethyl) - Sodium cyclohexylamino]-ethanesulfonate, the content of 2-[4-(4-amino-cyclohexylmethyl)-cyclohexylamino]-sodium ethanesulfonate is about 46.6%.

[0051] 2. High solid content polyurethane emulsion containing alicyclic sulfonic acid type hydrophilic chain extender

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Abstract

The invention discloses a high solid content polyurethane emulsion containing an alicyclic sulfonic acid type hydrophilic chain extending agent and a preparation method thereof. The high solid content polyurethane emulsion containing alicyclic sulfonic acid type hydrophilic chain extending agent is prepared by the following substances in percentage by weight: 9.5-16.5 of diisocyanate, 78-88 of polyester polyol, 0.25-0.45 of dimethylol propionic acid, 0.25-0.45 of salifying reagent, 1.4-3.8 of alicyclic sulfonic acid type hydrophilic chain extending agent, 0.9-1.9 of diamine chain extending agent and 0.01-0.02 of organic tin catalyst. The high solid content polyurethane emulsion containing the alicyclic sulfonic acid type hydrophilic chain extending agent has the solid content above 50 percent and good heat resistance and hydrolyzing resistance, can be applied to paint and adhesive and particularly can meet aqueous polyurethane adhesive and paint products with high performance.

Description

technical field [0001] The invention relates to the field of polyurethane emulsion, in particular to a high-solid-content polyurethane emulsion containing an alicyclic sulfonic acid type hydrophilic chain extender and a preparation technology thereof. Background technique [0002] Traditional solvent-based polyurethane adhesives and coatings, due to the use of a large amount of volatile organic compounds (VOC) or toxic solvents, not only cause serious pollution to the environment, but also bring harm to industrial workers in related industries such as shoemaking and decoration. Serious health damage may also cause safety accidents such as fires. These problems have aroused widespread concern in society. [0003] Since water-based polyurethane adhesives and coatings do not contain or only contain a very small amount of organic solvents, they are environmentally friendly products and will not cause harm to workers' health, and also eliminate safety hazards such as fire acciden...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/38C08G18/12
Inventor 林华玉卢江周国斌潘滴云黎瑞杨
Owner ZHUHAI YUTIAN CHEM PROD
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