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Preparation method of polyurethane coating and adhesive with flame retardance and light resistance

A technology of polyurethane coatings and adhesives, applied in polyurea/polyurethane coatings, polyurea/polyurethane adhesives, adhesives, etc., can solve the problems of heavy metal tin hazards, severe toxic side effects, and carcinogenicity, and achieve the effect of reducing toxicity

Active Publication Date: 2015-12-23
广东合顺涂层材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Dibutyltin dilaurate is often used as a catalyst for the polymerization of polyurethane, but since the heavy metal tin is harmful to the environment with the degradation of polyurethane, how to fix the residual tin catalyzed by dibutyltin dilaurate and reduce the impact of polyurethane coating residues on the environment The degree of harm has become a technical problem
[0004] In order to improve the light resistance of polyurethane resin, it is often used to add ultraviolet absorbers and antioxidants, but the traditional synthetic antioxidants include tert-butyl hydroxyanisole, tert-butyl hydroperoxide and tert-butyl hydroquinone, etc. Larger toxic and side effects and carcinogenicity, and the effect of improving water resistance with traditional silicone materials is not satisfactory, so it is necessary to find more efficient and environmentally friendly waterproof and light-resistant measures

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] (1) Preparation of modified manganese hypophosphite: Add 10g of manganese hypophosphite, 20g of boric acid, 25g of diethanolamine, and 10g of bis(4-carboxyphenyl)phenylphosphine oxide into a 250ml three-necked bottle with a stirrer and a thermometer and 50 g of water, adjust the pH to 4, heat to 60°C, stir for 2 hours, add 1 g of dipotassium edetate, stir for 1 hour at 50°C, and obtain modified manganese hypophosphite;

[0022] (2) Add 0.12g of dibutyltin dilaurate, 50g of polytetrahydrofuran ether glycol, and 10g of isophorone diisocyanate into a 250ml three-neck flask equipped with a stirrer, condenser, and thermometer, and react at 70°C for 1 hour. Obtain polyurethane prepolymer A, the molecular weight of described polytetrahydrofuran ether glycol is 2000;

[0023] (3) Add 0.72g of trimethylolpropane and 7.2g of methyl ethyl ketone to prepolymer A, react at 65°C for 1.5h, add 3g of modified manganese hypophosphite and 3g of 4-carboxybenzene prepared in step (1) Bori...

example 2

[0025] (1) Preparation of modified manganese hypophosphite: Add 10g of manganese hypophosphite, 20g of boric acid, 25g of diethanolamine, and 10g of bis(4-carboxyphenyl)phenylphosphine oxide into a 250ml three-necked bottle with a stirrer and a thermometer and 50 g of water, adjust the pH to 4, heat to 60°C, stir for 2 hours, add 1 g of dipotassium edetate, stir for 1 hour at 50°C, and obtain modified manganese hypophosphite;

[0026] (2) Add 0.54g of dibutyltin dilaurate, 60g of polytetrahydrofuran ether glycol and 30g of isophorone diisocyanate into a 500ml three-neck flask equipped with a stirrer, condenser and thermometer, and react at 100°C for 3h. Obtain polyurethane prepolymer A, the molecular weight of described polytetrahydrofuran ether glycol is 2000;

[0027] (3) Add 2.9g of 4-diethylamino ketoacid and 22.5g of methyl ethyl ketone to prepolymer A, react at 85°C for 3.5h, add 9g of modified manganese hypophosphite prepared in step (1) and 4- Carboxyphenylboronic aci...

example 3

[0029] (1) Preparation of modified manganese hypophosphite: Add 10g of manganese hypophosphite, 20g of boric acid, 25g of diethanolamine, and 10g of bis(4-carboxyphenyl)phenylphosphine oxide into a 250ml three-necked bottle with a stirrer and a thermometer And 50g of water, adjust the pH to 4, heat to 60°C, stir for 2h, dipotassium edetate 1g, stir for 1h at 50°C to obtain modified manganese hypophosphite;

[0030] (2) Add 0.42g of dibutyltin dilaurate, 75g of polytetrahydrofuran ether glycol and 30g of isophorone diisocyanate into a 500ml three-necked flask equipped with a stirrer, condenser and thermometer, and react at 85°C for 2h , to obtain polyurethane prepolymer A, the molecular weight of the polytetrahydrofuran ether glycol is 2000;

[0031] (3) Add 2.3g of 5-(1-hydroxy-2-isopropylaminobutyl)-8-carboxyquinolone and 19.4g of methyl ethyl ketone to prepolymer A, react at 75°C for 2.5h, add step ( 1) 7.9g of modified manganese hypophosphite and 5.8g of 4-carboxyphenylbor...

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Abstract

The invention discloses a preparation method of a polyurethane coating and adhesive with flame retardance and light resistance. The preparation method comprises the following steps: in the presence of a catalyst dibutyltin dilaurate, mixing polytetrahydrofuran ether glycol with isophorone diisocyanate to react at 70-100 DEG C for 1-3 hours to obtain a polyurethane prepolymer A; and adding a chain extender and methyl ethyl ketone to the prepolymer A to react at 65-85 DEG C for 1.5-3.5 hours, adding modified manganese hypophosphite and 4-carboxyphenylboronic acid to react at 75-95 DEG C for 1-2 hours, adding triethylamine for neutralization, adding a substance B and adding water for emulsification, thus obtaining the polyurethane coating and adhesive with flame retardance and light resistance. The prepared polyurethane coating and adhesive with flame retardance and light resistance is environment-friendly in preparation method and is low in price, is widely applied to the surfaces of walls, furniture and metalware and serves as the adhesive of plastics, glass, paper and textiles.

Description

technical field [0001] The invention relates to a preparation method of a polyurethane coating and an adhesive, in particular to a preparation method of a flame-retardant and light-resistant polyurethane coating and an adhesive. Background technique [0002] Polyurethane is mainly used in leather finishing, textile printing and dyeing, paper making, architectural coatings and adhesives and other fields. Because the coatings and paints sprayed on the surface of internal and external walls, furniture or metal appliances are in direct or indirect contact with humans, toxic and harmful coatings are always threatening people's health. In addition, because the field of use is often exposed to sunlight, and the sun's rays contain a large amount of ultraviolet light harmful to colored objects, with a wavelength of about 290-460nm, these harmful ultraviolet rays cause the color of the paint to change through chemical oxidation and reduction. Variety. [0003] Dibutyltin dilaurate i...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/12C09J175/08C09J11/04C08G18/48C08G18/75C08G18/66C08G18/32C08G18/38
Inventor 段宝荣王全杰唐志海丁海燕张萌萌候立杰王延青刘桂林钱升旭
Owner 广东合顺涂层材料有限公司
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