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Environment-friendly polyurethane foaming agent and preparation method thereof

A polyurethane foaming agent, an environmentally friendly technology, applied in the field of foam caulking agent, can solve the problems of softness, elasticity and anti-slip properties, such as not very ideal, large amount of polyurethane foaming agent used, and difficult to solve environmental protection problems, etc., to achieve the goal of using Good safety and environmental protection, good foam stability and low preparation cost

Inactive Publication Date: 2021-02-02
宋庆红
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned polyurethane foaming agent is used in a large amount, which not only increases the production cost, but also the material obtained by using the above-mentioned foaming agent is not very satisfactory in terms of softness, elasticity and anti-slip properties.
Moreover, these foaming agents themselves and the production process all involve chlorofluoro elements, and the environmental protection problem is difficult to solve. The potential for ozone depletion in the atmosphere is relatively large, and the price is relatively expensive.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030]An environmentally friendly polyurethane foaming agent, which is characterized in that it comprises the following components in parts by weight: (1-chloroprop-2-ylidene semi)urea modified (S)-2-hydroxy-3-(imidazole) -4-yl) propionic acid 6 parts, butyl stearate coated nano aluminum powder 0.5 parts, guanidine carbonate 0.3 parts, trimethylol aminomethane carbonate 0.2 parts, epoxy long-chain alkane modified three ( 0.5 part of hydroxymethyl)methylglycine.

[0031]The preparation method of the (1-chloroprop-2-ylidene amino)urea modified (S)-2-hydroxy-3-(imidazol-4-yl)propionic acid includes the following steps: -2-ylidene amino)urea and (S)-2-hydroxy-3-(imidazol-4-yl)propionic acid were added to the organic solvent, and the reaction was stirred at 40°C for 4 hours, and then the solvent was removed by rotary evaporation to obtain ( 1-Chloropropan-2-ylidene semi)urea modified (S)-2-hydroxy-3-(imidazol-4-yl)propionic acid.

[0032]The molar ratio of the (1-chloroprop-2-ylidene amino)ure...

Embodiment 2

[0037]An environmentally friendly polyurethane foaming agent, which is characterized in that it comprises the following components in parts by weight: (1-chloroprop-2-ylidene semi)urea modified (S)-2-hydroxy-3-(imidazole) -4-yl) propionic acid 7 parts, butyl stearate coated nano aluminum powder 0.7 parts, guanidine carbonate 0.35 parts, tris 0.25 parts tris (hydroxymethyl aminomethane) carbonate, epoxy long-chain alkane modified three ( 0.7 parts of hydroxymethyl)methylglycine.

[0038]The preparation method of the (1-chloroprop-2-ylidene amino)urea modified (S)-2-hydroxy-3-(imidazol-4-yl)propionic acid includes the following steps: -2-ylidene amino)urea and (S)-2-hydroxy-3-(imidazol-4-yl)propionic acid were added to an organic solvent, and the reaction was stirred at 45°C for 4.5 hours, and then the solvent was removed by rotary evaporation to obtain ( 1-chloroprop-2-ylidene semi)urea modified (S)-2-hydroxy-3-(imidazol-4-yl)propionic acid; the (1-chloroprop-2-ylidene semi)urea, The mo...

Embodiment 3

[0043]An environmentally friendly polyurethane foaming agent, which is characterized in that it comprises the following components in parts by weight: (1-chloroprop-2-ylidene semi)urea modified (S)-2-hydroxy-3-(imidazole) -4-yl) propionic acid 9 parts, butyl stearate coated nano aluminum powder 1 part, guanidine carbonate 0.4 parts, trimethylol aminomethane carbonate 0.3 parts, epoxy long-chain alkane modified three ( 1 part of hydroxymethyl)methylglycine.

[0044]The preparation method of the (1-chloroprop-2-ylidene amino)urea modified (S)-2-hydroxy-3-(imidazol-4-yl)propionic acid includes the following steps: -2-ylidene amino)urea and (S)-2-hydroxy-3-(imidazol-4-yl)propionic acid were added to the organic solvent, and the reaction was stirred at 50°C for 5 hours, and then the solvent was removed by rotary evaporation to obtain ( 1-chloroprop-2-ylidene semi)urea modified (S)-2-hydroxy-3-(imidazol-4-yl)propionic acid; the (1-chloroprop-2-ylidene semi)urea, The molar ratio of (S)-2-hydr...

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PUM

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Abstract

The invention discloses an environment-friendly polyurethane foaming agent and a preparation method thereof. The environment-friendly antirust agent, which is prepared from the following components inparts by weight: 6-12 parts of (1-chloro-propylideneamino)urea modified (S)-2-hydroxy-3-(imidazole-4-yl)propionic acid, 0.5-1.5 parts of butyl stearate coated nano aluminum powder, 0.3-0.5 part of guanidine carbonate, 0.2-0.4 part of tris(hydroxymethyl)aminomethane carbonate and 0.5-1.5 parts of epoxy long-chain alkane modified tris(hydroxymethyl)methylglycine. The invention also discloses the preparation method of the environment-friendly polyurethane foaming agent. The environment-friendly polyurethane foaming agent disclosed by the invention is remarkable in foaming effect, large in foaming amount, good in foam stability and good in use safety and environmental protection property, and polyurethane foam formed by using the foaming agent is uniform in structure and excellent in physicalproperty.

Description

Technical field[0001]The invention relates to the technical field of foam sealants, in particular to an environmentally friendly polyurethane foaming agent and a preparation method thereof.Background technique[0002]Polyurethane foam has excellent physical and mechanical properties, electrical properties, acoustic properties, and chemical resistance. It has remarkable effects such as caulking, bonding, sealing, sound absorption, and heat insulation, so it is widely used in the construction field. Foaming agent is a necessary component for preparing polyurethane foam, and its performance directly affects the foaming effect and various physical and chemical properties of the foam.[0003]The full name of polyurethane foaming agent is single-component polyurethane foam sealant. It is a high-performance foam material, commonly known as foaming agent, foam rubber, and PU sealant. Its thermal insulation performance is the best among various foam materials. At the same time, polyurethane foam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/04C08J9/08C08J9/00C09J175/04C08L75/04
CPCC08J9/0028C08J9/009C08J9/0095C08J9/04C08J9/08C08J2203/02C08J2375/04C09J175/04
Inventor 宋庆红
Owner 宋庆红
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