A kind of halogen-free environment-friendly polyurethane oil-based paint and preparation method thereof

A polyurethane and environmentally friendly technology, applied in polyurea/polyurethane coatings, coatings, fireproof coatings, etc., can solve the problems of changing the mechanical and physical properties of resins, flammability of polyurethane oil-based paints, poor paint compatibility, etc., to slow down the droplet phenomenon, Good acid and alkali resistance, good water resistance

Active Publication Date: 2017-06-27
安徽科赛富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

Ammonium hydrogen phosphate and sodium carbonate are inorganic salts, which have poor compatibility with paint and are easy to absorb moisture, which will change the mechanical and physical properties of most resins
Chinese patent CN101629043A discloses a kind of fire retardant paint, but this paint is only used for flame retardant on ferrous metal surface, and the highly toxic and highly corrosive compound phosphorus oxychloride is used in the production process
Same prior art does not solve the flammable problem of polyurethane oily paint

Method used

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  • A kind of halogen-free environment-friendly polyurethane oil-based paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Put 5 grams of 2,4-dinitroethylbenzene into a 250-ml flask protected by nitrogen, then add 3.1 grams of methyl phosphite and 10% mole of tetrakistriphenylphosphopalladium, reflux for 6 hours, and then Stir for 1 hour. Subsequent hydrogenation amination under the catalysis of nano-palladium / diatomaceous earth complex at room temperature takes about 4 hours. Finally, 15.0 g of trichloromethyl chloroformate was added dropwise, mixed and stirred evenly, and stirred under 40W incandescent light at room temperature for 3 hours. The reaction mixture was spin-dried, extracted with ethyl acetate, and washed three times with 30 ml of aqueous sodium carbonate and 30 ml of distilled water. The organic layer was dried with anhydrous sodium sulfate and spin-dried to obtain 6.5 g of phosphatized tolyl diisocyanate. The obtained phosphorylated phenyl isocyanate and 1.5 g of glycerin were blended, and 3-10% mole triethylamine was added to catalyze the reaction for 3 hours, and then 2....

Embodiment 2

[0028] Put 5 g of p-nitrotoluene into a 250 ml flask protected by nitrogen, then add 5.1 g of ethyl phosphite and 10% mole palladium acetate, reflux for 6 hours, and stir at room temperature for 1 hour. Subsequent hydrogenation amination at room temperature under the catalysis of nano-palladium / DNA complex takes about 3.5 hours. Finally, 10.3 g of trichloromethyl chloroformate was added dropwise, mixed and stirred evenly, illuminated by a 40W incandescent light at room temperature and stirred for 3 hours. The reaction mixture was spin-dried, extracted with ethyl acetate, and washed three times with 30 ml of aqueous sodium carbonate and 30 ml of distilled water. The organic layer was dried with anhydrous sodium sulfate and spin-dried to obtain 7.7 g of phosphophenyl isocyanate. The obtained phosphorylated phenyl isocyanate and 1.5 g of 1,2-ethylene glycol were blended, and 1-5% mole of pyridine was added to catalyze the reaction for 3 hours, and then 4.0 ml of 1,3-propylenedia...

Embodiment 3

[0037] Put 5 g of m-nitrotoluene into a 250 ml flask protected by nitrogen, then add 5.1 g of phosphorus pentoxide and 10% mole of palladium chloride, reflux for 6 hours, and stir at room temperature for 1 hour. Subsequent hydrogenation amination at room temperature under the catalysis of nano-gold / DNA complex takes about 3.5 hours. Finally, 10.3 g of trichloromethyl chloroformate was added dropwise, mixed and stirred evenly, illuminated by a 40W incandescent light at room temperature and stirred for 3 hours. The reaction mixture was spin-dried, extracted with ethyl acetate, and washed three times with 30 ml of aqueous sodium carbonate and 30 ml of distilled water. The organic layer was dried with anhydrous sodium sulfate and spin-dried to obtain 7.7 g of phosphophenyl isocyanate. The obtained phosphorylated phenyl isocyanate and 1.5 g of castor oil were blended, and 1-10% mol ammonium bicarbonate was added to catalyze the reaction for 3 hours, and then 4.0 ml of aniline was ...

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Abstract

The invention discloses a preparation method of a halogen-free environment-friendly polyurethane oil paint. The preparation method comprises the following steps: performing refluxing catalytic hydrogenation reduction on a phosphatizing agent and a nitrobenzene derivative in an organic solvent with the presence of a metal catalyst to obtain a phosphatized aniline derivative, dropwise adding trichloromethyl chloroformate, mixing and stirring uniformly at room temperature, reacting continuously for 2-4 hours to obtain phosphatized phenyl isocyanate, stirring the phosphatized phenyl isocyanate and an alcoholic compound for 3 hours with the presence of a polymerization catalyst, adding an amine compound, stirring continuously for 2 hours, performing vacuum dewatering on a reaction mixture to obtain flame-retardant polyurethane resin, adding a curing agent and a solvent, and reacting to obtain the halogen-free environment-friendly polyurethane oil paint. The invention further discloses the halogen-free environment-friendly polyurethane oil paint. The halogen-free environment-friendly polyurethane oil paint is an expansive environment-friendly flame-retardant polyurethane oil paint with a phosphorous-nitrogen synergistic effect. In the production process of a flame retardant, raw materials are cheap and easily obtained; the preparation method is free of a high-heat and high-pressure process, and simple to operate, and energy consumption in the production process is low; the whole production process is saves energy and is environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of new materials and applications, and in particular relates to a halogen-free environment-friendly polyurethane oily paint and a preparation method thereof. Background technique [0002] With the improvement of industrialization and the expansion of urbanization, the harm caused by fire is becoming more and more serious. In industrially developed countries, the focus of fire protection has been shifted from "elimination" to "prevention", and the requirements for flame retardancy are being implemented in various materials in daily life. However, there are currently no effective flame retardants for oil-based paints that are often used in the construction industry and in daily life. This is because the paint is an organic polymer material, which is not easy to be flame-retardant. The addition of conventional inorganic flame retardants and halogenated flame retardants will cause damage to the mechanical and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/71C08G18/32C09D175/04C09D175/12C09D5/18
CPCC08G18/3206C08G18/717C08G18/776C09D5/18C09D175/04
Inventor 汪志勇
Owner 安徽科赛富新材料科技有限公司
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