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Water-resisting, oil-proof, antifouling agent for fabric and production process thereof

A production method and antifouling agent technology, which is applied in the fields of antifouling agent, waterproof, and oil repellent, and can solve various problems such as performance degradation and failure to meet application requirements.

Inactive Publication Date: 2007-07-18
LIAONING FIXED STAR FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If high-temperature drying and shaping are completed in one step, the performance will drop by more than 50%, which cannot meet the application requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Synthesis of N-7 ethyl-N-hydroxyethyl perfluorooctane sulfonamide

[0033] Mix 100 grams of perfluorooctanesulfonyl fluoride with 18 grams of N-ethylethanolamine, add 1.4 grams of ethanol solution of sodium ethoxide (concentration 15%), heat to 68-70 ° C for 5 hours, cool to 40-45 ° C , wash with 200 grams of deionized water, separate the water layer to obtain N-ethyl-N-hydroxyethyl perfluorooctane sulfonamide, choose one of calcium chloride, magnesium sulfate, and silica gel, the best choice is calcium chloride dry. The product has a refractive index of 1.201.

[0034] (2) Synthesis of isophorone diisocyanate modified fluorine-containing acrylate

[0035] Mix 15.1 grams of isophorone diisocyanate with 0.005 grams of dilauryl dibutyltin, add 3.8 grams of acetone, heat to 58-60 ° C, add dropwise 37.6 grams of N-ethyl-N-hydroxyethyl perfluorooctane sulfonate Amide, the dropping time is 2.5-3 hours, the dropping is completed, the temperature is adjusted to 70-75°C, ...

Embodiment 2

[0045] According to the above method, 85 parts of the emulsion polymer of fluorine-containing acrylate obtained from (4) and 15 parts of the thermally decomposed closed-type polyurethane crosslinking agent obtained from (5) are fully mixed and stirred evenly to obtain waterproof, oil-proof and anti-fouling. agent.

Embodiment 3

[0047] According to the above method, 80 parts of the emulsion polymer of fluorine-containing acrylate obtained from (4) and 20 parts of the thermally decomposed closed-type polyurethane crosslinking agent obtained from (5) are fully mixed and stirred evenly to obtain waterproof, oil-proof and anti-fouling. agent.

[0048] Instructions:

[0049] 1. Two processes of low temperature drying and high temperature setting

[0050] Add 10-70 grams of this waterproof, oil-proof, and anti-fouling agent per liter of water to prepare a working solution. The fabric is soaked and pressed by two immersion and two pressure methods, and then dried at 120-140 °C, and then dried at 160- 180 ℃ high temperature setting.

[0051] 2. One process of high temperature drying and shaping

[0052] Add 10-70 grams of this waterproof, oil-proof, and anti-fouling agent per liter of water to prepare a working solution. Use two dipping and two pressing methods to soak and press the fabric, and then direct...

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Abstract

The present invention is waterproof, oilproof and anti-fouling agent for fabric and its production process. The waterproof, oilproof and anti-fouling agent is the mixture of emulsion polymerized fluoric acrylate polymer and pyrolytic closed polyurethane cross-linking agent. Its components include N-ethyl-N-hydroxyethyl perfluoro octyl sulfonamide 80-100 weight portions, isophorone diisocyanate 8-11 weight portions, hydroxyethyl acrylate 4-6 weight portions, acrylic acid 7-10 weight portions, acrylate 650-800 weight portions, and N-hydroxymethyl acrylamide 20-30 weight portions. It is used in the step of high temperature stoving and settling of fabric, and has the advantages of obvious effect, simple production process and lowered production cost.

Description

technical field [0001] The invention relates to a water-repellent, oil-repellent and antifouling agent, which is an aqueous dispersion of fluorine-containing acrylate polymer, and is especially suitable for the waterproof, oil-repellent and antifouling finishing of various textiles. Background technique [0002] The mechanism of action of waterproof, oil-proof and anti-fouling agents is based on the theory of surface physics and chemistry. When the critical surface tension of the liquid is greater than the surface tension of the covered substrate, the substrate will not be wetted or stained. Waterproof, oil-proof and anti-fouling agent can form a thin film on the surface of the substrate, reduce the surface tension of the substrate, making it smaller than the surface tension of ordinary liquids, and achieve the purpose of waterproof, oil-proof and anti-fouling. There are currently two types of waterproof, oil-proof, and anti-fouling agents on the market: organic silicon and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/263D06M15/564
Inventor 严欣宁孙继昌杨青
Owner LIAONING FIXED STAR FINE CHEM
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