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Method for preparing environmental friendly aquosity polyurethane inarching fluorine contained fabric finish agent

A water-based polyurethane, environmentally friendly technology, used in fiber processing, textiles and papermaking, etc., can solve the problems of environmental pollution, difficulty, good oil resistance, etc., and achieve the effect of high strength, soft hand feeling and high adhesion fastness.

Inactive Publication Date: 2008-02-27
江阴市诺科科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A large amount of organic solvents are easy to cause environmental pollution, and the finished fabrics are either good in water repellency or good in oil repellency, so it is difficult to have the excellent performance of water repellency and oil repellency at the same time.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Add 80 grams of polyethylene glycol with a molecular weight of 1000, 36 grams of diisocyanate (MDI) in the flask, react at 85 ° C for 1.5 hours, cool to 70 ° C, add 6 grams of dimethylol propionic acid (DMPA), 4 Tetrafluoroheptadecanediol, 8.6 grams of 1,4 butanediol, insulated and stirred for 30 minutes, 5 drops of dibutyltin dilaurate, added 70 grams of acetone to reduce the viscosity of the system, kept warm for 4.5 hours, added 3 gram hydroxyacrylate end-capped, and incubated for 4 hours. After adjusting the pH value to neutrality with triethylamine, deionized water was added and stirred at a high speed to obtain a PUA pre-emulsion. Take 100 g of the above-mentioned PUV emulsion, add fluorine-containing acrylate and 0.14 g of ammonium persulfate dropwise, drop it over in 2 hours, keep it at 80° C. for 4 hours, and obtain the fabric coating finishing agent.

Embodiment 2

[0018] Add 117 grams of polyether 220 and 40 grams of MDI into the flask, react at 85°C for 1.5 hours, cool down to 75°C, add 6 grams of DMPA, 5 grams of hexafluoropentanediol, 7.5 grams of 1,4 butanediol, and keep warm Stir for 30 minutes, add 5 drops of dibutyltin dilaurate dropwise, add 80 grams of acetone to reduce the viscosity of the system, keep it warm for 4.5 hours, add 3 grams of hydroxy acrylate to block it, and keep it warm for 4 hours. After adjusting the pH value to neutrality with triethylamine, deionized water was added and stirred at a high speed to obtain a PUA pre-emulsion. Take 100 g of the above-mentioned PUV emulsion, add fluorine-containing acrylate and 0.15 g of ammonium persulfate dropwise, finish dropping in 2 hours, and keep warm at 80° C. for 4 hours to obtain a fabric coating finishing agent.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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PUM

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Abstract

The invention relates to a making method of fluorine-containing fabric finishing agent with friendly environment type of water-based polyurethane grafting for water resistance dressing fabric mainly, which is characterized by the following: reacting diisocyanate and diatomic alcohol compound to form prepolymer with -NCO end-group; capping with hydroxyl allyl propionate after reacting hydrophilic monomer and glycol with fluorine and 1, 4 butanediol to extend chain; adding deionized water to stir after adjusting pH to neutral with amine to produce PUA pre-emulsion; grafting copolymerization with fluorine-containing acrylate to be the finishing agent. The invention improves high adhesive strength with bonded fabric with mellow hand and waterproof ventilating moisture permeating, which is an ideal fabric finishing material without unwanted volatile solvent during process of roller coating and dip-coating and curing, fits the environment-protecting technical requirement of fabric with the waterproof ventilating moisture permeating absolutely.

Description

technical field [0001] The invention relates to a preparation method of an environment-friendly water-based polyurethane grafted fluorine-containing fabric finishing agent. The finishing agent produced by this method is mainly used for waterproof and oil-proof finishing of fabrics. It belongs to the technical field of textile auxiliaries. Background technique [0002] Environment-friendly waterproof, breathable and moisture-permeable fabrics have always been pursued by people. Before the present invention was made, traditional fabric finishing agents contained a large amount of organic solvents. It mainly has the following deficiencies: [0003] A large amount of organic solvents contained in fabrics are likely to cause environmental pollution, and the finished fabrics either have good water repellency or good oil repellency, so it is difficult to have excellent performances of water repellency and oil repellency at the same time. Contents of the invention [0004] The ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): C08F283/00D06M15/564
Inventor 华明扬
Owner 江阴市诺科科技有限公司
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