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Blowing agent comprising primary amine salt and ethanolamine salt and use for polyurethane intermittent board foam material

A technology of ethanolamine salt and foaming agent, which is applied in the field of polyurethane foaming agent, and can solve problems such as uneven cell size, affecting the strength and thermal insulation properties of foamed materials, and uneven cell distribution.

Active Publication Date: 2021-03-12
SHANDONG UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In short, the foaming agent in the prior art cannot be dispersed into the foaming composition at the molecular level, resulting in uneven distribution of cells and uneven cell size, which ultimately affects the strength performance and thermal insulation of the foamed material nature

Method used

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  • Blowing agent comprising primary amine salt and ethanolamine salt and use for polyurethane intermittent board foam material

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0071] 3kg of 40% methylamine aqueous solution (molecular weight 31) is added in a transparent quartz glass reactor, stirred and dissolved, and the reactor is sealed, then under constant stirring, the temperature is controlled between 40-65°C, and carbon dioxide is passed into the In the reactor, control the pressure not to be higher than 0.3MPa, and control the temperature for 10 hours to react. After cooling down to below 40°C, release the pressure and release the product. Compound 1 was obtained. pH≥7.5, decomposition temperature is 42°C-70°C.

preparation example 2

[0073] 3kg of 70% ethylamine aqueous solution (molecular weight 45) is added in a transparent quartz glass reactor, stirred and dissolved, and the reactor is sealed, then under constant stirring, the temperature is controlled between 40-65°C, and carbon dioxide is passed into the In the reactor, control the pressure not to be higher than 0.3MPa, and control the temperature for 10 hours to react. After cooling down to below 40°C, release the pressure and release the product. Compound 2 was obtained. pH≥7.5, decomposition temperature is 42°C-70°C.

preparation example 3

[0075] Add 3kg of hexylamine (molecular weight 101) and 1.6kg of water into a transparent quartz glass reactor, stir to dissolve, seal the reactor, and then control the temperature between 40-65°C under constant stirring, and pass carbon dioxide through Put it into the reactor, control the pressure not higher than 0.3MPa, control the temperature and react for 10 hours, let off the pressure and release the product after cooling down to below 40°C. Compound 3 was obtained. pH≥7.5, decomposition temperature is 42°C-70°C.

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Abstract

Disclosed is a kind of polyurethane blowing agent comprising primary amine salt and ethanolamine salt, and this blowing agent comprises: 1) comprises the first compound mixture (M1) of the organic primary amine salt compound class with following general formula (I): A ‑ [B + ] p (I), where B + is the cation of a +1-valent organic primary amine B, A ‑ Yes: CO 3 2‑ , HCO 3 ‑ , or CO 3 2‑ with HCO 3 ‑ 2) a second compound comprising N-monohydroxyethyl-ammonium carbonate compound of general formula (II) and N,N'-di(hydroxyethyl)-ammonium carbonate compound of general formula (II) A compound mixture (M2): (RN + h 3 )(N + h 4 )CO 3 2‑ (II), or (RN + h 3 ) 2 CO 3 2‑ (III), in the formula, R is hydroxyethyl; the molar ratio of the compound of general formula (II) to the compound of general formula (III) is 1:0 to 1:2.5. Blowing agents are suitable for use in the preparation of polyurethane intermittent board foam materials.

Description

technical field [0001] The present invention relates to organic primary amine salt compounds having an anion as a CO2 donor, a process for their preparation and use as a blowing agent, and more particularly to providing organic primary amines having not only an anion as a CO2 donor but also a primary organic amine as a catalytic group A novel organic ammonium salt compound with a solubilizing group, a preparation method thereof, and an application in the preparation of a polyurethane intermittent board foam material. The present invention relates to polyurethane blowing agents comprising primary amine salts and ethanolamine salts and their use for (preparing) polyurethane intermittent board foam materials [0002] technical background [0003] As a new polymer material, polyurethane rigid foam is light in weight, high in strength and has extremely low thermal conductivity. Automobiles, refrigerators and freezers and other household appliances and other industries. The most ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/08C08J9/14C08G18/76C08G18/66C08G18/48C08G18/42C08G18/32C08G18/16
CPCC08G18/168C08G18/3228C08G18/3271C08G18/3275C08G18/4018C08G18/6655C08G18/6688C08G18/7671C08J9/08C08J9/144C08J2203/142C08J2203/204C08J2375/06C08J2375/08C08G2110/0025C08G2110/005
Inventor 毕戈华毕玉遂
Owner SHANDONG UNIV OF TECH
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