Blowing agent comprising primary amine salt and propanolamine salt and use for polyurethane refrigerator freezer foam material

A technology of propanolamine salt and foaming agent, which is applied in the preparation method and in the field of preparing polyurethane refrigerator freezer foam materials, can solve the problems of uneven cell size and uneven cell distribution, which affect the strength and performance of foam materials. Adiabatic properties etc.

Active Publication Date: 2021-04-13
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 propanolamine salt and use for polyurethane refrigerator freezer 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] The 50% ethylamine aqueous solution (molecular weight 45) of 3kg is joined in the transparent quartz glass reactor, stirs to dissolve, seals the reactor, then under constant stirring, controls the temperature between 40-65 ℃, passes carbon dioxide into 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 propanol amine salt, and this blowing agent comprises: 1) the first compound mixture (M1) comprising 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-monohydroxypropyl-ammonium carbonate compound of general formula (II) and N,N'-di(hydroxypropyl)-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 hydroxypropyl; the molar ratio of the compound of general formula (II) to the compound of general formula (III) is 1:0 to 1:2.5. The blowing agent is suitable for use in the preparation of polyurethane refrigerator freezer 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 foam material for a polyurethane refrigerator freezer. The present invention relates to a polyurethane foaming agent comprising primary amine salts and propanolamine salts and its use for (preparing) foam materials for polyurethane refrigerator freezers [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): C08J9/08C08J9/14C08G18/18C08G18/48C08G18/50C08G101/00
CPCC08G18/1825C08G18/48C08G18/482C08G18/5027C08J9/08C08J9/141C08J2203/02C08J2203/14C08J2203/204C08J2375/08C08G2110/005
Inventor 毕戈华毕玉遂
Owner SHANDONG UNIV OF TECH
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