Halogen-free phosphonate flame-retardant modified waterborne polyurethane coating agent and preparation method thereof

A technology of water-based polyurethane and halophosphonate, which is applied in textiles, papermaking, fiber treatment, etc., can solve the problems that affect the application range of flame retardants and are prone to cracking, and achieve the effect of small impact and high flame retardancy

Active Publication Date: 2013-04-17
浙江枫翎新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned flame retardants have good flame retardant effects, this type of flame retardants is prone to cracking at high temperatures and produces highly toxic polyhalogenated dibenzofurans, halogenated dibenzodioxins and other substances, which affects the performance of flame retardants. scope of application

Method used

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  • Halogen-free phosphonate flame-retardant modified waterborne polyurethane coating agent and preparation method thereof
  • Halogen-free phosphonate flame-retardant modified waterborne polyurethane coating agent and preparation method thereof
  • Halogen-free phosphonate flame-retardant modified waterborne polyurethane coating agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Under nitrogen protection atmosphere and stirring conditions, 3.07g of 2-phenoxy(3-hydroxy)phenylphosphine oxide (BPHPPO) with a hydroxyl value of 327mgKOH / g, 9.02g of polyether polyol with a hydroxyl value of 112mgKOH / g Alcohol N210 and 8.46 g of isophordione diisocyanate IPDI were placed in a flask, and a partial substitution reaction was carried out at a temperature of 75° C., and the reaction was stirred for 1.5 h.

[0027] Add 1.25g of chain extender dimethylolpropionic acid DMPA into the flask for chain extension, and react at 70°C for 3h. In order to prevent the system from being too viscous, add an appropriate amount of acetone to the above-mentioned flask to adjust the viscosity.

[0028] Cool the reaction intermediate product in the flask to below 40°C, add 1.08g of salt-forming agent triethylamine (TEA) and neutralize for 10 minutes to obtain a polyurethane prepolymer partially substituted with phosphonate-modified flame-retardant polyol.

[0029] Add 35.77 ...

Embodiment 2

[0031] Under nitrogen protection atmosphere and stirring conditions, the hydroxyl value of 4.81g is 455mgKOH / g. The structural formula is: The phosphonate-modified polyol, 8.90g polycastor oil adipate polyol with a hydroxyl value of 93mgKOH / g, and 12.45g toluene diisocyanate TDI were placed in a flask, and stirred and reacted at 70°C for 2h.

[0032] Add 3.42g chain extender containing sulfonate-type chain extender 1,4-butanediol-2-sodium sulfonate into the flask, and react at 65°C for 4h. In order to prevent the system from being too viscous, add an appropriate amount of acetone to the above-mentioned flask to adjust the viscosity.

[0033] Cool the reaction intermediate product in the flask to below 40°C, add 2.46g of salt-forming agent ammonia water and neutralize it for 10 minutes to obtain a prepolymer.

[0034] Add 75.31 g of deionized water into the flask, and stir vigorously for 35 minutes at a stirring speed of 850 r / min, so that the prepolymer is uniformly disperse...

Embodiment 3

[0036] Under nitrogen protection atmosphere and stirring conditions, the hydroxyl value of 6.50g is 496mgKOH / g. The structural formula is: The phosphonate-modified polyol, 8.52g of polyether polyol PPG with a hydroxyl value of 105mgKOH / g, and 7.30g of diphenylmethane diisocyanate MDI were placed in a flask, and stirred and reacted at 65°C for 2h.

[0037] Add 0.95g of cationic chain extender N-methyldiethanolamine into the flask, and react at 60°C for 4h. In order to prevent the system from being too viscous, add an appropriate amount of acetone to the above-mentioned flask to adjust the viscosity.

[0038] Cool the reaction intermediate product in the flask to below 40°C, add 0.92g of salt-forming agent acetic acid and neutralize it for 10 minutes to obtain a prepolymer.

[0039] Add 57.23 g of deionized water into the flask, and stir vigorously for 30 minutes at a stirring speed of 900 r / min, so that the prepolymer is uniformly dispersed in the deionized water, and the ace...

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Abstract

The invention relates to a halogen-free phosphonate flame-retardant modified waterborne polyurethane coating agent and a preparation method thereof, and discloses a halogen-free phosphonate flame-retardant modified waterborne polyurethane coating agent. The halogen-free phosphonate flame-retardant modified waterborne polyurethane coating agent is prepared by substituting a phosphonate modified flame-retardant polyol part for diisocyanate and polyol, performing chain extension by using a hydrophilic chain extender and neutralizing by using a salt-forming agent, wherein the diisocyanate accounts for 20 to 45 weight percent, the polyol accounts for 15 to 40 weight percent, the phosphonate modified flame-retardant polyol accounts for 15 to 40 weight percent, the hydrophilic chain extender accounts for 2 to 9 weight percent and the salt-forming agent accounts for 1 to 4 weight percent. The halogen-free phosphonate flame-retardant modified waterborne polyurethane coating agent and the preparation method thereof have the advantages that a free flame retardant is not provided and formaldehyde release is avoided; and fabric with the flame-retardant coating has excellent mechanical property and flame-retardant performance, is environment-friendly, non-toxic and low-smoke, and has high application value.

Description

technical field [0001] The invention relates to a water-based polyurethane flame-retardant coating agent and a preparation method thereof, in particular to a halogen-free phosphonate flame-retardant modified water-based polyurethane coating agent and a preparation method thereof. Background technique [0002] Flame retardant finishing agent, also known as flame retardant, flame retardant, fire retardant or fireproofing agent, is a functional additive that can impart flame retardancy to flammable fabrics; it is divided into additive flame retardants and Reactive flame retardant. Compared with filler flame retardant technology, reactive flame retardant technology can better achieve the goals of high efficiency, high flame retardancy, low smoke emission and low toxicity. Reactive flame retardant technology achieves the purpose of flame retardant by introducing flame retardant elements (halogen, phosphorus, antimony, silicon, nitrogen) into fabrics. Halogen is generally contai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/579C08G18/32C08G18/12
Inventor 胡毅陈金玲刘今强沈桢
Owner 浙江枫翎新材料科技有限公司
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