Amino silicone modified waterborne polyurethane and preparation method thereof

A technology of water-based polyurethane and amino silicon, which is applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of hydroxyl-terminated and amino-terminated silicon raw materials, hydroxyl silicon is easy to decompose and break, and the cost is high, so as to achieve simple and optimized production process Effect of letdown performance and production cost reduction

Inactive Publication Date: 2011-08-31
王奇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a kind of amino silicon modified waterborne polyurethane and its preparation method, to solve the problem that the terminal hydroxyl silicon of organosilicon modified waterborne polyurethane is easy to decompose and break, and the raw materials of hydroxyl terminal and amino terminal silicon are rare and costly question

Method used

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  • Amino silicone modified waterborne polyurethane and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0025] (1), an amino silicon-modified water-based polyurethane, which is prepared from the following raw materials in parts by weight: polyether N220: 192.94, isophorone diisocyanate (IPDI): 120.22, dimethylol propionic acid (DMPA): 17.54, dibutyltin dilaurate: 0.64, 1,4-butanediol (BDO): 20.10, acetone: 4-5, triethylamine (TEA): 13.24, side chain amino silicone oil: 8.04, to Ionized water 627.27.

[0026] (2), preparation method:

[0027] a. Add polyether N220 in a four-necked flask equipped with an electric stirrer, a thermometer and a reflux condenser in parts by weight, vacuumize and dehydrate at 110°C for 1 hour, then cool down to 60°C, and add isophorone diisocyanate , dibutyltin dilaurate and dimethylolpropionic acid, heated up to 75-80°C and reacted for 2-3 hours to obtain a reaction solution;

[0028] b. Add small molecule chain extender 1,4-butanediol to the reaction solution, control the temperature at 70°C for 2 hours, add acetone during the reaction, reduce the ...

Embodiment 2

[0031] (1), an aminosilicon-modified waterborne polyurethane for leather surface coating, which is prepared from the following raw materials in parts by weight: polyether N220: 210.46, isophorone diisocyanate (IPDI): 108.12, Dimethylol propionic acid (DMPA): 15.78, dibutyltin dilaurate: 0.7, 1,4-butanediol (BDO): 16.41, acetone: 4-5, triethylamine (TEA): 11.90, side chain Amino silicone oil: 7.02, deionized water 629.62.

[0032] (2), preparation method is with embodiment 1.

Embodiment 3

[0034] (1), a kind of aminosilicon modified waterborne polyurethane that is used for waterborne wood coating surface finishing, it is prepared by the raw material of following weight ratio: polycarbonate diol: 157.70, isophorone diisocyanate ( IPDI): 145.13, dimethylolpropionic acid (DMPA): 17.52, stannous octoate: 0.53, trimethylolpropane (TMP): 4.72, 1,4-butanediol (BDO): 25.35, acetone: 4 -5. Triethylamine (TEA): 13.21, side chain amino silicone oil: 9.02, deionized water 626.65.

[0035] (2), preparation method:

[0036] a. Add polycarbonate diol in a four-necked flask equipped with an electric stirrer, a thermometer and a reflux condenser in parts by weight, vacuumize and dehydrate at 110°C for 1 hour, then lower the temperature to 60°C, and add Isophor Ketone diisocyanate, stannous octoate and dimethylolpropionic acid are heated up to 75-80°C and reacted for 2-3 hours to obtain a reaction solution;

[0037] b. Add the mixed trimethylolpropane and 1,4-butanediol mixed s...

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Abstract

The invention discloses amino silicone modified waterborne polyurethane. The waterborne polyurethane is prepared from the following raw materials in parts by weight: 150-220 parts of polyether, 100-150 parts of isophorone diisocyanate, 15-20 parts of dimethylol propionic acid, 0.5-0.8 part of catalyst, 0-5 parts of trimethylolpropane, 15-30 parts of 1,4-butanediol, 4-5 parts of acetone, 10-15 parts of triethylamine, 5-10 parts of side chain amino silicone oil and 620-630 parts of deionized water. The preparation method of the amino silicone modified waterborne polyurethane is that side chain amino silicone oil is introduced in the aqueous phase chain extending process for modification; and the waterborne polyurethane has low preparation cost and good water resistance and adhesive force, is environmentally friendly and has no security threat.

Description

technical field [0001] The invention relates to the technical field of organosilicon-modified waterborne polyurethane, in particular to an aminosilicon-modified waterborne polyurethane and a preparation method thereof. Background technique [0002] Water-based polyurethane is non-flammable, non-toxic, non-polluting, easy to store, easy to use, and has the comprehensive properties of solvent-based polyurethane. It has become an important research direction in the field of polyurethane research. Since water-based polyurethanes are mostly thermoplastic, and high molecular weight polyurethanes cannot form good and stable dispersions, traditional one-component water-based polyurethanes cannot fully achieve solvent or two-component polyurethanes in terms of hardness, water resistance, and solvent resistance. s level. [0003] Due to the special structure and preparation of silicone, it has the advantages of good low temperature flexibility, low surface tension, good biocompatibil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/61C08G18/12C09D175/04C09D175/08
Inventor 王奇
Owner 王奇
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