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A kind of preparation method of light-resistant and flame-retardant waterborne polyurethane coating

A water-based polyurethane, flame-retardant technology, used in polyurea/polyurethane coatings, fire-retardant coatings, coatings, etc., can solve the problems of toxic gas generation, easy to be ignited, and polyurethane is not heat-resistant, so as to improve light resistance, improve Light fastness efficiency, toxicity reduction effect

Inactive Publication Date: 2016-04-20
广州经丰纬材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Like most other polymer materials, polyurethane is not heat-resistant, easy to be ignited, produces toxic gases, and endangers personal and property safety
Adding flame retardants is the most commonly used method to make polyurethane products have certain flame retardancy. Phosphate esters and halogenated phosphoric acid ester flame retardants are commonly added, but the above flame retardants prevent the flame retardancy of polyurethane products from being greatly improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] (1) A preparation step of fermented material is as follows:

[0024] (a) Stir and mix 70g of green papaya powder and 40g of mozuku into a mixture, then add 62g of water to the mixture, and adjust the pH of the mixture to 10 with 0.1g of sodium hydroxide to obtain a natural fermented material A is 170g;

[0025] (b) 2g of EM flora fermentation liquid, 0.7g trehalose glucose and 20g of water were mixed, packed into a sealed 250ml bottle and stored for 360h to obtain 22g of an EM fermented flora storage solution;

[0026] (c) Dilute 22 g of the prepared EM fermentation bacteria stock solution with 50 g of water to obtain the EM fermentation colony storage dilution, then spray 70 g of the EM fermentation colony storage dilution onto 170 g of the prepared natural fermentation material A, stir and mix evenly Compost and ferment at room temperature for 100 days to obtain a fermented material B of 230 g;

[0027] (d) Put 230g of fermented material B into 500ml of three-neck b...

example 2

[0031] (1) A preparation step of fermented material is as follows:

[0032] (a) Stir and mix 70g of green papaya powder and 40g of mozuku into a mixture, then add 62g of water to the mixture, and adjust the pH of the mixture to 10 with 0.1g of sodium hydroxide to obtain a natural fermented material A is 170g;

[0033] (b) 2g of EM flora fermentation broth, 0.7g isomaltooligosaccharide glucose and 20g water were mixed, packed into a sealed 250ml bottle and stored for 360h to obtain 22g of a EM fermented flora storage solution;

[0034] (c) Dilute 22 g of the prepared EM fermentation bacteria stock solution with 50 g of water to obtain the EM fermentation colony storage dilution, then spray 70 g of the EM fermentation colony storage dilution onto 170 g of the prepared natural fermentation material A, stir and mix evenly Compost and ferment at room temperature for 100 days to obtain a fermented material B of 230 g;

[0035] (d) Put 230g of fermentation material B into 500ml of ...

example 3

[0039] (1) A preparation step of fermented material is as follows:

[0040](a) Stir and mix 70g of green papaya powder and 40g of mozuku into a mixture, then add 62g of water to the mixture, and adjust the pH of the mixture to 10 with 0.1g of sodium hydroxide to obtain a natural fermented material A is 170g;

[0041] (b) 2g of EM flora fermentation broth, 0.7g maltooligosaccharide glucose and 20g water were mixed, packed into a sealed 250ml bottle and stored for 360h to obtain 22g of a EM fermented flora storage solution;

[0042] (c) Dilute 22 g of the prepared EM fermentation bacteria stock solution with 50 g of water to obtain the EM fermentation colony storage dilution, then spray 70 g of the EM fermentation colony storage dilution onto 170 g of the prepared natural fermentation material A, stir and mix evenly Compost and ferment at room temperature for 100 days to obtain a fermented material B of 230 g;

[0043] (d) Put 230g of fermented material B into 500ml of three-n...

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Abstract

The invention discloses a preparation method of a light-resistant and flame-retardant water-based polyurethane coating. In the presence of a dibutyltin dilaurate catalyst, polytetrahydrofuran ether diol and isophorone diisocyanate are mixed at 80-100°C. React for 1~3 hours, add cyclophosphamide, react for 1 hour, and react at 80°C to obtain polyurethane prepolymer A; add 1.2~3.2% chain extender and prepolymer to prepolymer A A 12~25% by weight of 1,1,2-trifluorotrichloroethane, react at 65~85°C for 1.5~3.5h, add fermentation material C and sorbitol, reaction temperature 65~85°C, reaction time 1~2h, according to the prepolymer weight of 10~15% triethylamine for neutralization reaction for 30~50min, add water for emulsification, to obtain light-resistant and flame-retardant water-based polyurethane, the prepared light-resistant and flame-retardant polyurethane is environmentally friendly, Low price, widely used in walls, furniture, metal utensils, as adhesives for plastics, glass, paper, and textiles.

Description

technical field [0001] The invention relates to a preparation method of paint, in particular to a preparation method of light-resistant and flame-retardant waterborne polyurethane paint. Background technique [0002] Polyurethane is mainly used in leather finishing, textile printing and dyeing, papermaking, architectural coatings, adhesives, etc. The coatings and paints sprayed on the surface of internal and external walls, furniture, and metal appliances are in direct or indirect contact with humans all the time. , Harmful coatings have also threatened people's health at all times. Because the field of use is often exposed to sunlight, because the sun’s rays contain a large amount of ultraviolet light harmful to colored objects, its wavelength is about 290-460nm, these harmful ultraviolet light changes the color of the paint through chemical oxidation and reduction. [0003] Polyurethane polymerization often uses dibutyltin dilaurate as a catalyst, but because the heavy me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/08C09D7/12C09D5/18C08G18/66C08G18/48C08G18/10C08G18/24
Inventor 段宝荣高晓琳
Owner 广州经丰纬材料有限公司
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