Preparation method of water-based flame-retardant water-pressure-resistant polyurethane emulsion for fabrics

A technology of polyurethane emulsion and water pressure resistance, which is applied in the direction of textiles, papermaking, coating, etc. It can solve the problems of unfavorable human health and high fastness, so as to improve the elasticity of film formation, low production cost and simple production process Effect

Active Publication Date: 2020-11-03
LIAONING FIXED STAR FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the invention achieves flame retardancy by adding an additive flame retardant, it cannot achieve high fastness characteristics in terms of fastness, and this invention not only uses brominated flame retardants, but also adds antimony trioxide to the formula , which contains a certain amount of heavy metals such as lead and cadmium, which are not conducive to human health
[0005] At present, although there are technical publications on the market for water-based polyurethane emulsions and water-based flame-retardant polyurethane emulsions with water pressure resistance, there are no products that have both water pressure resistance and flame retardancy, dryness, high elasticity, high fastness, cold resistance, and environmental protection. see technical disclosure

Method used

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  • Preparation method of water-based flame-retardant water-pressure-resistant polyurethane emulsion for fabrics
  • Preparation method of water-based flame-retardant water-pressure-resistant polyurethane emulsion for fabrics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Raw material ratio by weight:

[0052] (1) Prepolymerization reaction: polyoxypropylene triol 80 with a molecular weight of 3000, tris(dipropylene glycol) phosphite 35 with a molecular weight of 430, linear dihydroxyalkylsiloxane 20 with a molecular weight of 1000, iso Add phorone diisocyanate 55 and hydrogenated phenylmethane diisocyanate 65 into the reaction kettle, raise the temperature to 80-90°C, react for 1-1.5 hours, then add melamine cyanurate 5, keep the temperature at 80-90°C, and react for 1-1.5 hours hour, then add 2-methyl-1,3-propanediol 1.5, dimethylol propionic acid 2.5 to react for 1.5-2 hours;

[0053] (2) Neutralization reaction: cool down to 45-55°C, add triethylamine 1.7, and react for 30-40 minutes;

[0054] (3) Emulsification reaction: add deionized water 230, stir for 10-20 minutes until the prepolymer is completely dissolved;

[0055] (4) Chain extension reaction: Add 8.8 hydrazine hydrate and react for 2-2.5 hours to obtain a water-based flam...

Embodiment 2

[0058] (1) Prepolymerization reaction: polyoxypropylene triol 85 with a molecular weight of 3000, tris(dipropylene glycol) phosphite 40 with a molecular weight of 430, linear dihydroxyalkylsiloxane 15 with a molecular weight of 1000, iso Add phorone diisocyanate 60 and hydrogenated phenylmethane diisocyanate 70 into the reaction kettle, raise the temperature to 80-90°C, react for 1-1.5 hours, then add melamine cyanurate 6, keep the temperature at 80-90°C, and react for 1-1.5 hours hour, then add 2-methyl-1,3-propanediol 1, dimethylolpropionic acid 3 to react for 1.5-2 hours;

[0059] (2) Neutralization reaction: cool down to 45-55°C, add triethylamine 2.0, and react for 30-40 minutes;

[0060] (3) Emulsification reaction: add deionized water 240, stir for 10-20 minutes until the prepolymer is completely dissolved;

[0061] (4) Chain extension reaction: Add hydrazine hydrate 9.6 and react for 2-2.5 hours to obtain a water-based flame-retardant and water-resistant polyurethane ...

Embodiment 3

[0064] (1) Prepolymerization reaction: polyoxypropylene triol 70 with a molecular weight of 3000, tris(dipropylene glycol) phosphite 40 with a molecular weight of 430, linear dihydroxyalkylsiloxane 20 with a molecular weight of 1000, iso Add phorone diisocyanate 60 and hydrogenated phenylmethane diisocyanate 65 into the reaction kettle, raise the temperature to 80-90°C, react for 1-1.5 hours, then add melamine cyanurate 5, keep the temperature at 80-90°C, and react for 1-1.5 hours hour, then add 2-methyl-1,3-propanediol 2, dimethylolpropionic acid 2 and react for 1.5-2 hours;

[0065] (2) Neutralization reaction: cool down to 45-55°C, add triethylamine 1.3, and react for 30-40 minutes;

[0066] (3) Emulsification reaction: add deionized water 230, stir for 10-20 minutes until the prepolymer is completely dissolved;

[0067] (4) Chain extension reaction: Add hydrazine hydrate 9.1 and react for 2-2.5 hours to obtain a water-based flame-retardant and water-resistant polyurethane...

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Abstract

The invention relates to a preparation method of a water-based flame-retardant water-pressure-resistant polyurethane emulsion, which is prepared from isophorone diisocyanate, hydrogenated phenylmethane diisocyanate, polyoxypropylene triol, tris(dipropylene glycol)phosphite, linear dihydroxyalkyl siloxane, melamine cyanurate, dimethylolpropionic acid, 2-methyl-1,3-propylene glycol, triethylamine, hydrazine hydrate and deionized water through a prepolymerization reaction, a neutralization reaction, an emulsification reaction and a chain extension reaction. The fabric is stiff and dry in hand feeling and is high in elasticity, high in fastness, cold-resistant, high in water pressure resistance, good in flame retardance, environmentally friendly and low in production cost.

Description

technical field [0001] The invention relates to a method for preparing a fabric water-based flame-retardant and water-pressure-resistant polyurethane emulsion, in particular to a polyester oxford tent fabric coating, which has the characteristics of stiff hand feeling, dryness, high elasticity, high fastness, cold resistance, high water pressure resistance, and water resistance. The invention discloses a method for preparing an aqueous polyurethane emulsion with good flammability, environmental protection and low production cost. Background technique [0002] Flame-retardant and water-pressure-resistant coated textiles on the market are all added to the water-pressure-resistant coating adhesive by adding a large amount of additive flame retardants, such as brominated flame retardants, antimony trioxide, chlorinated paraffin, etc., although excellent Flame retardant performance, but other properties such as water pressure resistance and cold resistance will be greatly reduced...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/75C08G18/66C08G18/61C08G18/48C08G18/40C08G18/12C08G18/34C08G18/32D06N3/14D06N3/00
CPCC08G18/755C08G18/758C08G18/722C08G18/6666C08G18/4009C08G18/61C08G18/4829C08G18/388C08G18/12D06N3/148D06N3/0036D06N2203/068D06N2209/067D06N2209/1685C08G18/348C08G18/3206C08G18/3853
Inventor 陈剑冰唐丽荣星陈龙李瑶
Owner LIAONING FIXED STAR FINE CHEM
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