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Preparation method and application of environment-friendly polyurethane catalyst

A polyurethane catalyst and an environment-friendly technology, applied in the field of preparation of an environment-friendly polyurethane catalyst, can solve the problems of restricting the development of polyurethane and human injury, and achieve the effects of improving yield, simple operation and broad application prospects.

Pending Publication Date: 2022-07-05
国科广化韶关新材料研究院 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The metal organocatalysts most used in the synthesis of polyurethane are organotins, but heavy metal tin can cause harm to the human body, which limits the further development of polyurethane

Method used

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  • Preparation method and application of environment-friendly polyurethane catalyst
  • Preparation method and application of environment-friendly polyurethane catalyst
  • Preparation method and application of environment-friendly polyurethane catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) 0.81g of zinc oxide is dissolved in 200mL of 0.1mol / L dilute hydrochloric acid, and the pH of the solution is adjusted to 3 with dilute hydrochloric acid to obtain an environmentally friendly organic zinc solution;

[0037] (2) 21.6g of tridecanoic acid was dissolved in 100mL of 1mol / L sodium hydroxide solution, heated to 70°C, maintained for 3 hours, and the solid was dissolved to obtain a carboxylate solution;

[0038] (3) adding 100mL environment-friendly organic zinc solution and 100mL valeric acid to the 100ml carboxylate solution obtained in step (2), stirring evenly, heating to 80° C., and reacting for 2 hours to obtain a product solution that generates precipitation; Cooling, vacuum filtration with a Buchner funnel, and repeatedly rinsed with 60°C distilled water for 6 times; the washed product is placed in a 120°C vacuum drying oven for drying to obtain an environmentally friendly organozinc catalyst.

[0039] The catalyst yield obtained in this example was...

Embodiment 2

[0042] (1) 1.36g of zinc chloride is dissolved in 200mL of 0.1mol / L dilute nitric acid, and the pH of the solution is adjusted to be 4 with dilute nitric acid to obtain an environmentally friendly organic zinc solution;

[0043] (2) 14.4g of isooctanoic acid was dissolved in 100mL of 1mol / L sodium hydroxide solution, heated to 60°C, maintained for 3 hours, and the solid was dissolved to obtain a carboxylate solution;

[0044] (3) adding 100mL environment-friendly organic zinc solution and 100mL mineral oil to the 100ml carboxylate solution obtained in step (2), stirring evenly, heating to 70° C., and reacting for 3 hours to obtain a viscous product solution; Cool the solution, use a separating funnel to stand for stratification, separate the water phase, perform vacuum distillation on the organic phase to obtain the product, and repeatedly rinse the product with 50°C distilled water for 8 times; place the washed product in a 100°C vacuum drying oven. Drying is carried out in t...

Embodiment 3

[0048] (1) 1.89g of zinc nitrate was dissolved in 200mL of 0.1mol / L dilute nitric acid, and the pH of the solution was adjusted to 3 with dilute nitric acid to obtain an environmentally friendly organic zinc solution;

[0049] (2) 17.2g of neodecanoic acid was dissolved in 100mL of 1mol / L sodium hydroxide solution, heated to 70°C, maintained for 3 hours, and the solid was dissolved to obtain a carboxylate solution;

[0050](3) in the 100ml carboxylate solution obtained in step (2), add environment-friendly 100mL organic zinc solution and 150mL propionic acid, stir, be heated to 60 ℃, react 4 hours, obtain the product solution that generates precipitation;

[0051] The product solution was cooled, vacuum filtered with a Buchner funnel, and washed with distilled water at 60°C for 7 times; the washed product was placed in a vacuum drying oven at 100°C for drying to obtain an environmentally friendly organozinc catalyst.

[0052] The catalyst yield obtained in this example was 76....

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Abstract

The invention belongs to the field of polyurethane catalysts, and discloses a preparation method and application of an environment-friendly polyurethane catalyst, and the preparation method comprises the following steps: (1) dissolving an environment-friendly metal compound in a solvent, and adjusting the pH value of the solution to obtain an environment-friendly metal salt solution; (2) dissolving a carboxylic acid compound in a solvent, maintaining for a certain time under a heating condition, and obtaining a carboxylate solution after the solid is dissolved; and (3) adding the environment-friendly metal salt solution obtained in the step (1) and a solvent into the carboxylate solution obtained in the step (2), uniformly mixing, carrying out heating reaction to obtain a product solution, cooling, washing and drying to obtain the environment-friendly polyurethane catalyst. By improving a traditional precipitation method, reactants are fully dissolved and reacted, the yield of the prepared environment-friendly polyurethane catalyst is larger than 72%, the yield of the environment-friendly polyurethane catalyst is effectively increased, and the environment-friendly polyurethane catalyst is non-toxic and environmentally friendly.

Description

technical field [0001] The invention belongs to the field of polyurethane catalysts, and particularly relates to a preparation method and application of an environment-friendly polyurethane catalyst. Background technique [0002] Polyurethane is a very important polymer material and is widely used in coatings, elastomers, foam materials, adhesives and other fields. Polyurethane is usually prepared by the group reaction between hydroxyl and isocyanate, and the catalyst can directly affect the rate, selectivity and yield of the reaction. At the same time, the catalyst is not recovered in the process of producing polyurethane, so it is very important to choose a suitable catalyst. . Organotin is the most widely used metal-organic catalyst for the synthesis of polyurethane, but the heavy metal tin can cause harm to the human body, which limits the further development of polyurethane. Therefore, for the needs of health and environmental protection, it is necessary to study a pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/22
CPCC08G18/222
Inventor 胡继文邰名扬陈磊王晓飞李诗桂雪峰涂园园林树东
Owner 国科广化韶关新材料研究院
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