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Polyurethane resin for tetramethylguanidine ionic liquid-modified waterborne synthetic leather and manufacturing method thereof

A tetramethylguanidine type, polyurethane resin technology, used in textiles and papermaking, etc., can solve the problems of waterborne polyurethane mechanical strength, poor solvent resistance and water resistance, etc.

Active Publication Date: 2013-04-03
ZHEJIANG HUAFON SYNTHETIC RESIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical strength, solvent resistance, water resistance and other functions of water-based polyurethane are inferior to those of solvent-based polyurethane resin, and there are certain limitations in application.

Method used

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  • Polyurethane resin for tetramethylguanidine ionic liquid-modified waterborne synthetic leather and manufacturing method thereof
  • Polyurethane resin for tetramethylguanidine ionic liquid-modified waterborne synthetic leather and manufacturing method thereof
  • Polyurethane resin for tetramethylguanidine ionic liquid-modified waterborne synthetic leather and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024]

[0025]

[0026] Add polytetrahydrofuran diol, polyoxypropylene-oxyethylene glycol, DMPA, NMP into a reactor equipped with a stirrer, a thermometer, a reflux condenser, and a nitrogen protection device, raise the temperature to 60°C, and slowly add MDI after 50 minutes. React at 90°C for 4 hours, add ethylene glycol and 1,4-butanediol, react for 2 hours, add deionized water, stir vigorously, add ethylenediamine dropwise, control the dropping time at 30 minutes, and stir for 50 minutes after the addition , and finally join [TMG][BF 4 ] and [TMG][PF 6 ] reacted for 50 minutes to obtain the product.

[0027] The industry standard "QB / T4197-2011 Polyurethane Resin for Synthetic Leather" was used for testing, and the results are as follows:

[0028] Solid content: 45%;

[0029] Abrasion resistance: 800r without damage;

[0030] Tensile strength / MPa: 46.0;

[0031] Elongation: 1100%;

[0032] Water absorption (soaked in distilled water for 24 hours): 8.8%.

Embodiment 2

[0034]

[0035]

[0036] Add polytetrahydrofuran diol, polyoxypropylene-oxyethylene glycol, DMPA, NMP into a reactor equipped with a stirrer, thermometer, reflux condenser, and nitrogen protection device, raise the temperature to 65°C, and slowly add MDI after 45 minutes. React at 95°C for 3.5 hours, add ethylene glycol and 1,4-butanediol, react for 1.5 hours, add deionized water, stir vigorously, add ethylenediamine dropwise, control the dropping time at 40 minutes, stir after the addition is complete 40 minutes, add [TMG][BF at the end 4 ] and [TMG][PF 6 ] reacted for 40 minutes to obtain the product.

[0037] The industry standard "QB / T4197-2011 Polyurethane Resin for Synthetic Leather" was used for testing, and the results are as follows:

[0038] Solid content: 40%;

[0039] Abrasion resistance: 900r without damage;

[0040] Tensile strength / MPa: 46.5;

[0041] Elongation: 1060%;

[0042] Water absorption (soaked in distilled water for 24 hours): 8.5%.

Embodiment 3

[0044]

[0045]

[0046] Add polytetrahydrofuran diol, polyoxypropylene-oxyethylene glycol, DMPA, NMP into a reactor equipped with a stirrer, a thermometer, a reflux condenser, and a nitrogen protection device, raise the temperature to 70°C, and slowly add MDI after 40 minutes. React at 100°C for 2.5 hours, add ethylene glycol and 1,4-butanediol, react for 1.5 hours, add deionized water, stir vigorously, add ethylenediamine dropwise, control the dropping time at 50 minutes, stir after the addition is complete 40 minutes, add [TMG][BF at the end 4 ] and [TMG][PF 6 ] reacted for 40 minutes to obtain the product.

[0047] The industry standard "QB / T4197-2011 Polyurethane Resin for Synthetic Leather" was used for testing, and the results are as follows:

[0048] Solid content: 35%;

[0049] Abrasion resistance: 900r without damage;

[0050] Tensile strength / MPa: 47.0;

[0051] Elongation: 1000%;

[0052] Water absorption (soaked in distilled water for 24 hours): 8.8%. ...

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PUM

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Abstract

The invention discloses polyurethane resin for tetramethylguanidine ionic liquid-modified waterborne synthetic leather and a manufacturing method thereof. The polyurethane resin is prepared from the following raw materials in parts by weight: 15-30 parts of oligomer polyol, 9-12 parts of isocyanate, 0.3-0.8 part of dihydric alcohol, 2-5 parts of diamine, 1-3 parts of dimethylol propionic acid, 3-8 parts of N-methylpyrrolidone, 10-15 parts of tetramethylguanidine ionic liquid and 55-70 parts of water. The polyurethane resin disclosed by the invention has the advantages of improving wear resistance, tensile strength, elongation ratio and water resistance of the synthetic leather.

Description

technical field [0001] The invention relates to a polyurethane resin for modified water-based synthetic leather and a preparation method thereof. Background technique [0002] Ionic liquids are composed of organic cations and organic or inorganic anions, and are liquid salts at room temperature or near room temperature, with low melting point, low vapor pressure, wide liquid range, good thermodynamic stability and chemical stability and Structurally adjustable, it is a new type of environmentally friendly solvent. [0003] Chinese patent application No. 200780047766.3 discloses a method for producing coated woven fabrics, more particularly synthetic leather, which uses ionic liquids as solvents for polyurethane raw materials and has the characteristics of low or no toxicity, but the patent The specific production steps of the specific ionic liquid solvent synthetic leather are not disclosed in the application, and the viscosity of the ionic liquid is much higher than that o...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/48C08G18/32D06N3/14
Inventor 金美金薛敬钦郝智平郑绍军吴晓敏张初银
Owner ZHEJIANG HUAFON SYNTHETIC RESIN
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