Environment friendly non-halogen reacting fire-retardant aqueous polyurethane and preparation method thereof

A reactive flame-retardant, water-based polyurethane technology, which is applied in the chemical industry, can solve the problems of large smoke generation and accompanying toxic gases, and achieve the effect of transparent coating and low release of volatile solvents

Inactive Publication Date: 2011-08-17
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems in the prior art that the preparation of flame-retardant water-based polyurethane requires the addition of halogen flame-retardant, accompanied by toxic gas and large amount of smoke, and to provide an environmentally friendly non-halogen reactive flame-retardant water-based polyurethane and its preparation method

Method used

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  • Environment friendly non-halogen reacting fire-retardant aqueous polyurethane and preparation method thereof
  • Environment friendly non-halogen reacting fire-retardant aqueous polyurethane and preparation method thereof
  • Environment friendly non-halogen reacting fire-retardant aqueous polyurethane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Environmentally friendly halogen-free flame retardant waterborne polyurethane formula 1.

[0029]

[0030]

[0031] (1) Add polyether polyols, dimethylol propionic acid, toluene diisocyanate, and organic phosphorus with a hydroxyl value of 170 mgKOH / g in a container equipped with an agitator, a reflux condenser, and a thermometer in sequence. polyol and stannous octoate, at 85°C in N 2 React under protection for 8 hours to obtain a prepolymer.

[0032] (2) Cool down the temperature of the prepolymer to 40° C., and add 30 g of butanone to adjust the viscosity of the prepolymer.

[0033] (3) triethylamine is dissolved in 370g deionized water, is made into concentration and is the neutralizer aqueous solution of 1.38%, joins in the prepolymer, carries out emulsification and neutralization wherein with high-speed emulsification equipment immediately, the time is 7 minutes, Then use a rotary evaporator to remove the butanone to obtain a halogen-free waterborne polyur...

Embodiment 2

[0036] Environmentally friendly halogen-free flame retardant waterborne polyurethane formula 2

[0037]

[0038] (1) Add polyether polyol, dimethylol propionic acid, diphenylmethane diisocyanate, hydroxyl value 400mgKOH / g in the container with agitator, reflux condenser, and thermometer successively. g of organophosphorus polyols and stannous octoate, at 85°C in N 2 React under protection for 5 hours to obtain a prepolymer.

[0039] (2) Cool down the temperature of the prepolymer to 40° C., and add 30 g of butanone to adjust the viscosity of the prepolymer.

[0040] (3) triethylamine is dissolved in 483g deionized water, is made into concentration and is the neutralizer aqueous solution of 1.38%, joins in the prepolymer, carries out emulsification and neutralization wherein with high-speed emulsification equipment immediately, the time is 7 minutes, Then use a rotary evaporator to remove the butanone to obtain a halogen-free waterborne polyurethane modified by organophosp...

Embodiment 3

[0043] Environmentally friendly halogen-free flame retardant waterborne polyurethane formula 3

[0044]

[0045] (1) Add polyether polyol, dimethylol propionic acid, toluene diisocyanate, organic polyol with a hydroxyl value of 115mgKOH / g, dimethylol propionic acid, toluene diisocyanate, and a hydroxyl value of 170mgKOH / g in a container equipped with a stirrer, a reflux condenser, and a thermometer. Phosphorus polyols, organosilicon polyols with a hydroxyl value of 53.2mgKOH / g and stannous octoate, at 85°C in N 2 React under protection for 10 hours to obtain a prepolymer.

[0046] (2) Cool down the temperature of the prepolymer to 40° C., and add 40 g of butanone to adjust the viscosity of the prepolymer.

[0047] (3) triethylamine is dissolved in 350g deionized water, is made into 1.44% neutralizer aqueous solution, joins in the prepolymer, carries out emulsification neutralization wherein with high-speed emulsifying equipment immediately, the time is 7 minutes, then with...

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Abstract

The invention provides an environmental-protection halogen free reaction type fire retardant waterborne polyurethane and a method for preparing the same, which belongs to the technical field of chemical industry. The fire retardant waterborne polyurethane consists of diisocyanate, non-fire retardant polyhydric alcohol, organic phosphorus polyhydric alcohol, organosilicon polyhydric alcohol, a hydrophilic chain extender, a neutralizer and a catalyst. The preparation method comprises the following steps: at certain temperature, the diisocyanate, the non-fire retardant polyhydric alcohol, the hydrophilic chain extender, the organic phosphorus polyhydric alcohol and the organosilicon polyhydric alcohol are orderly added in a reaction kettle, and are subjected to pre-polymerization under the action of the catalyst and the protection of N2 and by stirring; and a pre-polymer is cooled down, added with neutralizer water solution and then put in high-speed emulsifying equipment for emulsifyingneutralization, and a target product is obtained. The product has the characteristics of no halogen and low-release volatile solvent; and when the waterborne polyurethane is used to clean up textile fabrics, the coating is transparent and adhesiveness-free, the touch feeling of the textile fabrics is not affected, and the fire retardant effect is obvious.

Description

technical field [0001] The invention relates to an environment-friendly halogen-free reactive flame-retardant waterborne polyurethane and a preparation method thereof, belonging to the technical field of chemical industry. Background technique [0002] Polyurethane is a class of macromolecular compounds containing carbamate groups in the molecular chain. It is used to make a series of products such as polyurethane foam, rubber, paint, adhesive, synthetic fiber, synthetic leather, waterproof grouting material, etc., which are widely used in industry and daily life, and almost penetrate into all sectors of the national economy. In products with polyurethane as the main component, especially in polyurethane coatings and polyurethane adhesives, it is often necessary to add a large amount of organic solvents to reduce their viscosity and facilitate construction and use. Water-based polyurethane uses water as the medium. Water is non-flammable, non-explosive, non-toxic, tasteless...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/65C08G18/38C08G18/12
Inventor 罗运军李杰陈鹤葛振李晓萌
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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