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Modified waterborne polyurethane resin for artificial leather and preparation method thereof

A water-based polyurethane and polyester resin technology, used in textiles and papermaking, can solve problems such as the inability to meet the physical properties of synthetic leather, and achieve the effects of low cost, good hand feel, and improved mechanical strength

Inactive Publication Date: 2009-11-18
建德市顺发化工助剂有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

Although these water-based polyurethane resins use different raw materials and production processes, the products can only be used for coatings and adhesives, and cannot be used as macromolecular resins for synthetic leather; nor can they meet the physical properties of synthetic leather.

Method used

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the examples, but it should be understood that these examples are not intended to limit the scope of the present invention. Those skilled in the art can make changes and improvements to the present invention without departing from the spirit and scope of the present invention. It is suitable for different use cases, conditions and implementations.

[0027] Example 1: Polyether polyol N210 (6%) N220 (11%), toluene diisocyanate TDI (8%), dimethylol propionic acid (1.6%), hydroxyl saturated polyester resin (3%), dimethicone Dibutyltin laurate (0.01%), diethylene glycol (1.1%), triethylamine (1.2%), isophorone diamine (0.5%), hydroxyl polyether modified siloxane hydroxyl value 56 (1.5 %), the balance is water.

[0028] The formulation of this example can be used in the manufacture of luggage leather, shoe leather and semi-PU leather.

[0029] Example 2: polyether polyol N220 (12%) N240 (6%), toluene...

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Abstract

The invention relates to a modified waterborne polyurethane resin for artificial leather and a preparation method thereof. The modified waterborne polyurethane resin comprises formulation: the combination of any two in 6% of polyether polyol N210 with the molecular weight of 1000, 9-14% of polyether polyol N220 with the molecular weight of 2000 or 6% of polyether polyol N240 with the molecular weight of 4000; 6.5-9% of toluene di-isocyanate (TDI), 1.5-1.8% of dimethylol propionic acid, 2-4% of hydroxyl saturated polyester resin, 0.0-1% of dibutyl tin laurate, 0.8-1.5% of diethylene glycol, 0.9-1.3% of triethylamine, 0.4-0.5% of isophorone diamine, 0.5-2% of hydroxyl polyether modified siloxane with the hydroxyl value of 56 and the rest of water. The invention has the advantages of high tensile strength, good elasticity, strong adhesive force, excellent water resistance, solvent resistance and chemical resistance, better leather feeling, high cold resistance and folding strength, good combination property and remarkable environmental protection.

Description

technical field [0001] The invention relates to a modified water-based polyurethane resin for synthetic leather and a preparation method thereof, more particularly to a water-based polyurethane used for artificial leather and a preparation method thereof. Background technique [0002] At present, the polyurethane resins used in synthetic leathers in the country are all solvent-based polyurethane resins. The use of these solvents will cause various hazards, such as operator's health, environmental pollution, and safety hazards in storage and transportation. The volatilization and recovery of solvents will also lead to waste of resources and energy, which is not in line with the national industrial policy of energy conservation and emission reduction. With the development of economy and global integration, environmental protection and energy issues have also attracted the attention of various countries. The development and use of water-based polyurethane resins to replace th...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/66C08G18/10D06N3/14
Inventor 胡水仙朱张林
Owner 建德市顺发化工助剂有限公司
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