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Alkaline alcohol amine foaming agent and application for preparing polyurethane spray foam materials

A foaming agent and alkaline technology, applied in the preparation of polyurethane spray foam materials, basic alkanolamine foaming agent, in the field of preparation of polyurethane spray foam materials, can solve the problem of affecting the strength performance and thermal insulation properties of foam materials , Uneven distribution of cells, uneven cell size, etc.

Active Publication Date: 2019-03-05
SHANDONG UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 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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  • Alkaline alcohol amine foaming agent and application for preparing polyurethane spray foam materials

Examples

Experimental program
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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≥8.0, 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≥8.2, 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≥8.2, decomposition temperature is 42°C-70°C.

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Abstract

Disclosed are an alkaline alcohol amine foaming agent and an application for preparing polyurethane spray foam materials. The invention discloses a polyurethane alkaline foaming agent containing primary amine salts and propanol amine salts. A pH value of the alkaline foaming agent is between 8.5 and 9.5. The foaming agent comprises the following components: 1) a first compound mixture (M1) containing organic primary amine salt compounds having a general formula (I) which is A<->[B<+>]p, wherein the B<+> is a cation of organic primary amine B with +1 valence and the A<-> is CO<3><2->, HCO<3><->or a combination of the CO<3><2-> and HCO<3><->; and 2) a second compound mixture (M2) containing N-monohydroxypropyl-ammonium carbonate compounds having a general formula (II) which is (RN<+>H3)(N<+>H4)CO<3><2-> and N,N'-bis(hydroxypropyl)-ammonium carbonate compounds having a general formula (III) which is (RN<+>H3)2CO<3><2->, wherein the R is a hydroxypropyl group, and a molar ratio of the compounds of the formula (II) to the compounds of the formula (III) is 1:0 to 1:1.0. The foaming agent is suitable for the preparation of polyurethane spray foam materials.

Description

technical field [0001] The present invention relates to having as CO 2 The use of organic amine salt compounds of donor anions as blowing agents, more specifically, to provide not only CO 2 The anion of the donor and the application of the new organic ammonium salt compound with the organic primary amine as the catalytic group and the solubilizing group in the preparation of the polyurethane spray foam material. More particularly, it relates to basic alkanolamine blowing agents and their use for the preparation of polyurethane spray foam materials. technical background [0002] 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 important raw material in the production of rigid polyurethane foam is the blowing agent. At present, these blowing agents are chlorofluorocarbons except cyclopentane...

Claims

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Application Information

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Patent Type & Authority Applications(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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