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Blowing agent comprising secondary 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 the problems affecting the strength and thermal insulation properties of foaming materials, uneven cell size, and uneven cell distribution.

Active Publication Date: 2021-02-19
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 secondary amine salt and ethanolamine salt and use for polyurethane intermittent board foam material

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0071] Add 3kg of 40% dimethylamine aqueous solution (molecular weight 45) into a transparent quartz glass reactor, stir to dissolve, seal the reactor, then under constant stirring, control the temperature between 40-65 ° C, and pass carbon dioxide into In the reactor, control the pressure not to be higher than 0.3MPa, control the temperature and react for 10 hours, release the pressure and release the product after the temperature is lowered to below 40°C. Compound 1 was obtained. pH≥7.5, decomposition temperature is 42°C-70°C.

preparation example 2

[0073] Add 3kg of 30% diethylamine aqueous solution (molecular weight 73) into a transparent quartz glass reactor, stir to dissolve, seal the reactor, then under constant stirring, control the temperature between 40-65 ° C, and pass carbon dioxide into In the reactor, control the pressure not to be higher than 0.3MPa, control the temperature and react for 10 hours, release the pressure and release the product after the temperature is lowered to below 40°C. Compound 2 was obtained. pH≥7.5, decomposition temperature is 42°C-70°C.

preparation example 3

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

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Abstract

A polyurethane blowing agent comprising a secondary amine salt and an ethanolamine salt is disclosed, the blowing agent comprising: 1) a first compound mixture (M1) comprising an organic secondary amine salt compound having the following general formula (I): A ‑ [B + ] p (I), where B + is the cation of a +1-valent organic secondary 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 with general formula (II) and N,N'-di(hydroxyethyl)-ammonium carbonate compound with 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 an organic secondary amine salt compound having an anion as a CO2 donor, a process for its preparation and its use as a foaming agent, and more particularly to providing an organic secondary amine not only having an anion as a CO2 donor but also an organic secondary 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 secondary 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 industr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/08C08G18/18C08G18/48C08G18/42C08G101/00
CPCC08G18/18C08G18/4018C08G2101/00C08J9/08C08J2375/04
Inventor 毕玉遂毕戈华
Owner SHANDONG UNIV OF TECH