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

A water-based polyurethane and synergistic flame-retardant technology, applied in the chemical industry, can solve the problem of large smoke generation and achieve the effect of low release of volatile solvents

Inactive Publication Date: 2010-12-22
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 problem of adding flame retardant halogens in the preparation of flame-retardant water-based polyurethane in the prior art, accompanied by toxic gas and large amount of smoke, and to provide an environmentally friendly halogen-free reactive phosphorus-nitrogen synergistic flame-retardant water-based polyurethane and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

stannous octoate

0.6

[0033] (1) In a four-necked flask equipped with a stirrer, a reflux condenser, and a thermometer, add polyether polyols with a hydroxyl value of 115mgKOH / g, dimethylol propionic acid, toluene diisocyanate, and a hydroxyl value of 170mgKOH / g organophosphorus polyols and stannous octoate, at 85°C in N 2 Reacted under protection for 2.5 hours.

[0034] (2) Add 26.0 g of 1,4-dihydroxypiperazine while keeping warm, and react for 5 hours to obtain a prepolymer.

[0035] (3) The temperature of the prepolymer was lowered to 40° C., and 40 g of butanone was added to adjust the viscosity of the prepolymer.

[0036] (4) triethylamine is dissolved in 630g deionized water, is made into concentration and is the neutralizer aqueous solution of 1.53%, joins in the prepolymer, carries out emulsification and neutralization wherein with high-speed emulsification equipment immediately, the time is 6 minutes, Then use a rotary evaporator to remove butanone t...

Embodiment 2

[0041] (1) Add polyether polyols with a hydroxyl value of 115mgKOH / g, dimethylol propionic acid, diphenylmethane diisocyanate and a hydroxyl value to a four-necked flask equipped with a stirrer, a reflux condenser, and a thermometer. 170mgKOH / g organophosphorus polyol and stannous octoate, at 85°C in N 2 React under protection for 2 hours.

[0042] (2) 12.53 g of 1,4-dihydroxypiperazine was added at heat preservation, and reacted for 4 hours to obtain a prepolymer.

[0043] (3) Cool the prepolymer to 40° C., add 30 g butanone to adjust the viscosity of the prepolymer.

[0044] (4) triethylamine is dissolved in 530g deionized water, is made into concentration and is the neutralizer aqueous solution of 1.58%, joins in the prepolymer, carries out emulsification and neutralization wherein with high-speed emulsification equipment immediately, the time is 6 minutes, Then use a rotary evaporator to remove butanone to obtain a modified halogen-free aqueous polyurethane.

[0...

Embodiment 3

[0048] raw material

[0049] (1) In a four-necked flask equipped with a stirrer, a reflux condenser, and a thermometer, add polyether polyols with a hydroxyl value of 115mgKOH / g, dimethylol propionic acid, toluene diisocyanate, and a hydroxyl value of 170mgKOH / g organophosphorus polyols and stannous octoate, at 85°C in N 2 React under protection for 3 hours.

[0050] (2) Add 12.6 g of 1,4-dihydroxypiperazine while keeping warm, and react for 4.5 hours to obtain a prepolymer.

[0051](3) The temperature of the prepolymer was lowered to 40° C., and 30 g of butanone was added to adjust the viscosity of the prepolymer.

[0052] (4) triethylamine is dissolved in 620g deionized water, is made into concentration and is the neutralizer aqueous solution of 1.51%, joins in the prepolymer, carries out emulsification and neutralization wherein with high-speed emulsification equipment immediately, the time is 6 minutes, Then use a rotary evaporator to remove butanone to obtain ...

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Abstract

The invention provides an environmental-protection halogen free reaction type phosphorus-nitrogen synergic effect fire retardant waterborne polyurethane and a method for preparing the same, which belongs to the chemical industry 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 hydroxyl type piperazine chain extender, a catalyst and a neutralizer. The preparation method comprises the following steps: the diisocyanate, the non-fire retardant polyhydric alcohol, the hydrophilic chain extender and the organic phosphorus polyhydric alcohol are orderly added in a reaction kettle, and are stirred and reacted under the action of the catalyst and the protection of N2 for a period of time; and the hydroxyl type piperazine chain extende is added in the mixture to obtain a pre-polymer; and finally,the pre-monomer is cooled down, added with neutralizer water solution and then put in high-speed emulsifying equipment for emulsifying neutralization, 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 and halogen-free reactive phosphorus-nitrogen synergistic 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,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/12C08G18/32C08G18/38C08G18/65
Inventor 罗运军李杰陈鹤葛振李晓萌
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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