Preparation method of water-based polyurethane drier

A drier and water-based technology, which is applied in the direction of drier, chemical instruments and methods, etc., can solve the problems of astonishing price and difficult practicality to industrial production, and achieve the effects of low price, improved drying rate and good miscibility

Inactive Publication Date: 2008-01-02
闫里选
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, the application of domestic water-based polyurethane in the field of synthetic leather is still in its infancy, and the water-based drier specially used for water-based materials is still in a blank state. Only a few countries abroad produce water-based drier, and the price is astonishing, reaching several hundred per kilogram At least a thousand yuan, it is difficult to be practical in industrial production

Method used

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Experimental program
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Effect test

Embodiment

[0022] 1. Raw materials:

[0023] 1. Cobalt naphthenate is selected as the oily main drier;

[0024] 2. Zinc naphthenate and calcium naphthenate are selected as oil-based drying aids;

[0025] 3. The emulsifier is selected from sorbitan monooleate;

[0026] 4. The chelating agent is N-lauroyl ethylenediamine triacetate (N-acyl ED3A);

[0027] 5. The emulsification reaction catalyst is n-butyltin dilaurate;

[0028] 6. Deionized water.

[0029] 2. Instruments and equipment:

[0030] High-shear emulsification reactor: volume 250 ml, jacketed to circulate cooling water, speed 15000 rpm, line speed not less than 25 m / s;

[0031] Three. A kind of preparation method of aqueous polyurethane drier:

[0032] Step 1. Ingredients:

[0033] Cobalt Naphthenate 20g

[0034] Zinc naphthenate 7g

[0035] Tungsten naphthenate 7g

[0036] Sorbitan Monooleate 3 g

[0037] n-Butyltin dilaurate 0.1 g

[0038] Chelating agent 0.25g

[0039] 65 grams of deionized water

[0040] The sec...

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Abstract

The invention relates to a method for preparing a water polyurethane drier, which comprises the following steps: weighing material, oil main drier, oil auxiliary drier, emulsifier, emulsion reaction drier, chelant and deionized water according to 1:1.5-1.5:0.005-0.1:0.0001-0.005:0.001-0.02:1-5; adding deionized water in the emulsifier with high shearing force( the rotary speed is 13000-15000 rotation/ minute, the linear speed isn't less than 25m/s); adding oil main drier, oil auxiliary drier, chelant, dilaurate ortho-butyl tin and emulsifier sequentially; starting the recalculated water in the emulsifier when the material temperature in the reactor is 40Deg. C; keeping the temperature of liquid less than 40Deg. C; acquiring the water polyurethane drier by mixing 25-30minutes. The water polyurethane drier can dissolve with water, which can dissolve with water polyurethane according to any proportion, and has the long saving time and the low cost.

Description

technical field [0001] The invention relates to a preparation method of a water-based polyurethane drier, which is suitable for preparing polyurethane synthetic leather and belongs to the technical field of fine chemicals. Background technique [0002] Polyurethane (PU) is an important part of petrochemical products. Polyurethane products are divided into two categories: foam products and non-foam products. The main parts of non-foam products are coatings, adhesives, and synthetic leather. Because polyurethane has the characteristics of adjustable softness and hardness, wear resistance, solvent resistance, low temperature resistance, aging resistance, and good adhesion with most materials, it is widely used in the world and develops rapidly. The development of my country's polyurethane industry is at a In the period of high-speed growth, the annual growth rate exceeds 10%. [0003] Polyurethane synthetic leather can better replace natural leather, and has been widely used in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09F9/00C08L75/04
Inventor 闫里选
Owner 闫里选
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