High-gloss water-base polyurethane resin for synthetic leather and preparation method of high-gloss water-base polyurethane resin

A water-based polyurethane and high-gloss technology, which is applied in the field of polyurethane resin materials, can solve environmental pollution and other problems, and achieve the effects of high gloss, smooth surface and simple preparation method

Inactive Publication Date: 2013-04-17
XUCHUAN CHEM SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While providing convenience for people, solvent-based polyurethane resin, which is the main raw material of the synthetic leather industry, emits a large amount of organic solvents during use, causing environmental pollution

Method used

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  • High-gloss water-base polyurethane resin for synthetic leather and preparation method of high-gloss water-base polyurethane resin
  • High-gloss water-base polyurethane resin for synthetic leather and preparation method of high-gloss water-base polyurethane resin
  • High-gloss water-base polyurethane resin for synthetic leather and preparation method of high-gloss water-base polyurethane resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] High-gloss water-based polyurethane resin for synthetic leather, made of the following components: 230g polyphthalate-diethylene glycol (Mn=3000), 120g castor oil, 32g dimethylolpropane acid (DMPA), 2.8g trimethylolpropane (TMP), 116g toluene diisocyanate (TDI).

[0027] Its preparation method:

[0028] Mix 230g polyphthalate-diethylene glycol ester diol (Mn=3000), 120g castor oil, 32g dimethylolpropionic acid (DMPA), 2.8g trimethylolpropane (TMP) and 116g Add toluene diisocyanate (TDI) into the reactor and mix well. After reacting at 85° C. for 3 hours, the temperature was lowered to 55° C., and 500 g of acetone was added for dilution. Stir evenly, and when the temperature continues to drop to 20°C, add 24.1g of triethylamine for neutralization. Stir evenly, transfer to emulsification equipment, and when the temperature continues to drop to 15°C, add 500g of 15°C distilled water and shear at high speed to obtain a nearly transparent emulsion. 3.9 g of ethylenediami...

Embodiment 2

[0030] High-gloss water-based polyurethane resin for synthetic leather, made of the following components: 230g polyadipate-terephthalate-diethylene glycol (Mn=2000), 79g castor oil, 38.1g Dimethylolpropionic acid (DMPA), 152g toluene diisocyanate (TDI).

[0031] Its preparation method:

[0032] Mix 230g of polyadipate-terephthalate-diethylene glycol (Mn=2000), 79g of castor oil, 38.1g of dimethylolpropionic acid (DMPA) and 152g of toluene diisocyanate (TDI) Add to the reactor and mix well. After reacting at 85° C. for 2.5 hours, the temperature was lowered to 55° C., and 350 g of acetone was added for dilution. Stir evenly, and when the temperature continues to drop to 20°C, add 28.8g of triethylamine for neutralization. Stir evenly, transfer to emulsification equipment, and when the temperature continues to drop to 15°C, add 750g of 15°C distilled water and shear at high speed to obtain a transparent emulsion. 9.2 g of ethylenediamine was added and the chain was post-exte...

Embodiment 3

[0034] High-gloss water-based polyurethane resin for synthetic leather, made of the following components by weight: 40 parts of castor oil, 10 parts of toluene diisocyanate, 1 part of 2,2-dimethylol propionic acid, 0.5 parts of ethylene glycol, three 0.5 parts of ethylamine, 40 parts of water.

[0035] Its preparation method comprises the following steps:

[0036] (1) Preparation of prepolymer: mix long-chain polyol, aromatic or aliphatic diisocyanate, anionic hydrophilic compound and low molecular weight compound containing hydroxyl or amino groups, and react at a constant temperature of 70°C for 5 hours to obtain a prepolymer:

[0037] (2) Dilute and neutralize: cool the prepolymer to 10°C, add 100% of the mass of the prepolymer with acetone and butanone to dilute, and add an ion neutralizer for neutralization to obtain a neutralized mixture;

[0038] (3) Emulsification with water: add water to emulsify the neutralized mixture to obtain a water emulsion;

[0039] (4) Solve...

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Abstract

The invention provides high-gloss water-base polyurethane resin for synthetic leather, which comprises the following components in parts by weight: 40-90 parts of long-chain polyhydroxy compound, 10-40 parts of aromatic or aliphatic diisocyanate, 1-20 parts of anionic hydrophilic compound, 0.5-10 parts of low molecular compound containing hydroxyl groups or amino groups, 0.5-10 parts of ionic neutralizer, and 40-80 parts of water. The preparation method of the water-base polyurethane resin is simple and low in cost, the water-base polyurethane resin is high in gloss and good in resilience, has a smooth surface, and can serve as dry surface resin or surface conditioning agent resin of the synthetic leather.

Description

technical field [0001] The invention relates to the field of polyurethane resin materials, in particular to a high-gloss water-based polyurethane resin for synthetic leather, and to a preparation method of the resin. Background technique [0002] In recent years, relying on the progress of polyurethane chemistry and the abundant supply of raw materials, my country's synthetic leather industry has developed rapidly. Synthetic leather products have been used in clothing, footwear, luggage, furniture, vehicles, sports equipment and other industries, and have penetrated into all aspects of human life. While providing convenience for people, solvent-based polyurethane resin, which is the main raw material of the synthetic leather industry, emits a large amount of organic solvents during use, causing environmental pollution. Therefore, it has become a consensus in the industry to use water-based polyurethane resin for synthetic leather products to promote clean production in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/68C08G18/67C08G18/66C08G18/42C08G18/34C08G18/32C08G18/12C08L75/14C08L75/06D06M15/572D06M15/564D06N3/14
Inventor 戴淄岳吕华波江平
Owner XUCHUAN CHEM SUZHOU
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