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Bio-based waterborne polyurethane resin as well as preparation method and application thereof

A water-based polyurethane and bio-based technology, which is applied in the field of polyurethane preparation, can solve the problems that water resistance needs to be further improved, and achieve the effect of improving water resistance, tensile deformation and strength

Active Publication Date: 2021-04-30
SHANGHAI HUIDE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its water resistance still needs to be further improved

Method used

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  • Bio-based waterborne polyurethane resin as well as preparation method and application thereof
  • Bio-based waterborne polyurethane resin as well as preparation method and application thereof
  • Bio-based waterborne polyurethane resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066]In the present embodiment, an alternative aqueous polyurethane resin is provided, and the preparation of the biological aqueous polyurethane resin comprises the weight percentage, including the following components:

[0067]

[0068]Among them, the number average molecular weight of castor oil is 932, the functionality is 2.7; the number average molecular weight of the polyethylene oxide-propylene copolymer is 4000; castor oil accounts for ribo oil, SILOK-8841F and polyethylene oxide-propylene copolymerization The total mass of alcohol was 40%, and the molar ratio of Silok-8841F and castor oil was 0.65: 1.

[0069]The preparation method includes the following steps:

[0070](1) Stir castor oil, part of 1,6-hexanate and organic bismuth, where the molar ratio of the hydroxyl group in castor oil is 1: 2, temperature rise to 75 The reaction was reacted at 2.5 h, followed by SILOK-8841F, continued to react 1.5H;

[0071](2) Cooling to 75 ° C, add polyethylene oxide-propylene copolymented diol and...

Embodiment 2

[0077]In the present embodiment, an alternative aqueous polyurethane resin is provided, and the preparation of the biological aqueous polyurethane resin comprises the weight percentage, including the following components:

[0078]

[0079]

[0080]Among them, the number average molecular weight of castor oil is 932, the functionality is 2.7; the number average molecular weight of the polyoxypropylene diol is 4000; castor oil accounts for 28% of the total mass of rrotor oil, SILOK-8841F, and polyoxypropylene diol. 20%, SILOK The molar ratio of -8841F and castor oil is 0.9: 1.

[0081]The preparation method includes the following steps:

[0082](1) Castor oil, isophorone diisocyanate, partial bicyclic hexamol diisocyanate and organic zirconium stirred for 15 min, wherein the hydroxyl group in castor oil is isocyananate and cyclohexylin diisocyanate. The molar ratio of the acid was 0.9: 2, and the temperature was raised to 70 ° C for 2 h, then SiLOK-8841F was added, and the reaction was continued for...

Embodiment 3

[0089]In the present embodiment, an alternative aqueous polyurethane resin is provided, and the preparation of the biological aqueous polyurethane resin comprises the weight percentage, including the following components:

[0090]

[0091]Among them, the number average molecular weight of castor oil is 932, the functionality is 2.7; the number average molecular weight of the polyethylene oxide-propylene copolymer is 1000; castor oil accounts for riche oil, SILOK-8841F and polyethylene oxide-propylene copolymerization The total mass of the alcohol was 40%, and the molar ratio of Silok-8841F and castor oil was 0.9: 1.

[0092]The preparation method includes the following steps:

[0093](1) Castor oil, partially bicyclic hexamol diisocyanate and organic bismuth were stirred for 20 min, in which the molar ratio of the hydroxyl group in castor oil was 1.1: 2, heated to 80 ° C. 3H, then add SILOK-8841F, continue to react 2H;

[0094](2) Cooling to 70 ° C, add polyethylene oxide-propylene copolymented di...

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Abstract

The invention provides bio-based waterborne polyurethane resin as well as a preparation method and application of the bio-based waterborne polyurethane resin. The bio-based waterborne polyurethane resin comprises the following components in percentage by weight: 3.5 to 17.5% of castor oil, 1.2 to 8.1% of monohydroxy organic silicon, 7.3 to 33.6% of oligomer diol, 4 to 23% of isocyanate, 0.5 to 2.8% of a carboxylic acid hydrophilic chain extender and / or sulfonic acid hydrophilic chain extender, 0.2 to 5.5% of a micromolecular amine chain extender, 0 to 2.8% of a micromolecular alcohol chain extender, 0 to 1.3% of a salt forming agent, 0.005 to 0.01% of a catalyst and 45 to 65% of deionized water. The bio-based waterborne polyurethane resin provided by the invention has good water resistance on the basis of guaranteeing excellent film-forming property, stability and mechanical properties, and is suitable for waterborne polyurethane synthetic leather.

Description

Technical field[0001]The present invention belongs to the preparation of polyurethane, and it is related to a biological aqueous polyurethane resin and a preparation method thereof.Background technique[0002]Waterborne polyurethane is a solvent, has no advantages of non-polluting, safe and reliable, excellent mechanical properties, good compatibility, easy modification, have become an important direction of the development of polyurethane industries. Polyurethane production raw materials are more derived from petrochemical products. With the exposure of excessive renewable resource issues, people's concern is caused by bio-based raw materials, and the bioerators are mostly from animals and plants, which have good renewable and Biodegradability, which is used to prepare aqueous polyurethane meet the needs of production and environmental protection.[0003]Waterborne polyurethane is introduced into a carboxylic acid hydrophilic group due to urethane molecules, and the water resistance of...

Claims

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Application Information

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IPC IPC(8): C08G18/12C08G18/66C08G18/48C08G18/34C08G18/32C08G18/67C08G18/38C08L75/14
CPCC08G18/12C08G18/6692C08G18/6685C08G18/6674C08G18/4837C08G18/348C08G18/3855C08G18/3206C08G18/36C08G18/4825C08G18/4854C08G18/4808C08G18/4833C08G18/289C08L75/14C08G18/3228C08G18/3234
Inventor 钱建中钱洪祥陈桂莲张杨静胡亮
Owner SHANGHAI HUIDE TECH CO LTD