Producing method of water-base polyurethane

A technology of water-based polyurethane and production method, applied in the direction of polyurea/polyurethane adhesive, adhesive type, adhesive, etc., to achieve the effects of reduced equipment requirements, reduced production costs, and excellent bond strength

Inactive Publication Date: 2013-05-01
烟台宜彬新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of the water-based polyurethane disclosed in the prior art when applied to textile adhesives are its low solid content, low degree of crosslinking, poor strength, and water resistance. Poor performance and high requirements on equipment technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Take the following materials by weight to prepare waterborne polyurethane:

[0047] Polyethylene adipate diol (molecular weight 500) 100 parts

[0048] Isophorone diisocyanate 200 parts

[0049] Ethylene glycol 28 parts

[0050] 1 part Trimethylolpropane

[0051] Dimethylol propionic acid 10.6 parts

[0052] 8.8 parts of triethylamine

[0053] Ethylenediamine 4 parts

[0054] Dibutyltin dilaurate 0.1 part

[0055] Acetone 100 parts

[0056] 560.55 parts of deionized water

[0057] NMP 21.2 parts

[0058] The first step: the preparation of polyurethane prepolymer:

[0059] ① Add 100 parts of polyethylene adipate diol with a molecular weight of 500 to a four-neck flask equipped with a reflux condenser, a thermometer, a stirrer and a vacuum port, and vacuum dry and dehydrate at 100°C for 3 hours. Then, remove the vacuum and cool down to 40°C;

[0060] ② Add 100 parts of acetone and 0.1 part of dibutyltin dilaurate at the same time;

[0061] ③ Add 200 parts of i...

Embodiment 2

[0070] Take the following materials by weight to prepare waterborne polyurethane:

[0071] Polyhexamethylene adipate diol (molecular weight 1000) 150 parts

[0072] Isophorone diisocyanate 150 parts

[0073] Butanediol 20 parts

[0074] 1 part Trimethylolpropane

[0075] Dimethylol propionic acid 18 parts

[0076] 13.6 parts of triethylamine

[0077] Diethylenetriamine 8.6 parts

[0078] Dibutyltin dilaurate 0.05 parts

[0079] Acetone 100 parts

[0080] Deionized water 595.88 parts

[0081] NMP 36 parts

[0082] The first step: the preparation of polyurethane prepolymer:

[0083] ① Add 150 parts of polyhexamethylene adipate diol with a molecular weight of 1000 to a four-neck flask equipped with a reflux condenser, a thermometer, a stirrer and a vacuum port, dry and dehydrate in vacuum at 110°C for 2 hours, and release the vacuum to lower the temperature to 60°C;

[0084] ② Add 100 parts of acetone and 0.05 parts of dibutyltin dilaurate at the same time;

[0085] ③...

Embodiment 3

[0096] Take the following materials by weight to prepare waterborne polyurethane:

[0097] Polyoxypropylene glycol (molecular weight 2000) 200 parts

[0098] Isophorone diisocyanate 100 parts

[0099] Neopentyl glycol 3.5 parts

[0100] 1 part Trimethylolpropane

[0101] Dimethylolpropionic acid 24 parts

[0102] 14.5 parts of triethylamine

[0103] Tetraethylenepentamine 9.5 parts

[0104] Butanone 100 parts

[0105] 603.63 parts of deionized water

[0106] NMP 48 parts

[0107] The first step: the preparation of polyurethane prepolymer:

[0108] ① Add 200 parts of polyoxypropylene glycol with a molecular weight of 2000 to a four-necked flask equipped with a reflux condenser, a thermometer, a stirrer and a vacuum port, dry and dehydrate in vacuum at 120°C for 1 hour, release the vacuum and cool down to 60°C;

[0109] ② Add 100 parts of butanone;

[0110] ③ Add 100 parts of isophorone diisocyanate, keep the temperature at 80°C, and polymerize for 2 hours;

[0111] ④...

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Abstract

The invention discloses a producing method of water-base polyurethane, which comprises the steps of preparing a polyurethane prepolymer, preparing polyurethane prepolymer salt and finally obtaining water-base polyurethane. Water-base polyurethane prepared by the method has the characteristics of good strength, moderate crosslinking degree, uniform particle size, good water resistance, high binding power and the like, can be applied to spinning adhesive, and can serve as the spinning adhesive.

Description

technical field [0001] The invention relates to a production method of water-based polyurethane. The water-based polyurethane produced by the method is mainly used in textile adhesives such as printing adhesives and flocking adhesives. Background technique [0002] At present, the traditional textile adhesives on the market are mainly acrylic emulsion adhesives. In recent years, as people have higher and higher requirements for environmental protection, most of the traditional acrylic emulsion adhesives contain formaldehyde, which will cause harm to human health. The requirements of acrylic emulsion adhesives are getting higher and higher, and the hot sticky and cold brittle characteristics of acrylic emulsion adhesives have caused their bad hand feeling, which can no longer meet the requirements of the market. Polyurethane adhesives are becoming more and more popular in the market, but most of the traditional polyurethane adhesives are solvent-based, containing a large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/32C08G18/34C08G18/38C08G18/10C09J175/06C09J175/08
Inventor 赵光明赵家成马骥
Owner 烟台宜彬新材料科技有限公司
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