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Secondary amine and alcohol amine basic blowing agents and use for the preparation of polyurethane spray foam materials

A foaming agent, polyurethane technology, applied in the preparation of polyurethane spray foam materials, the application of polyurethane spray foam materials, secondary amine/alcohol amine basic foaming agent field, can solve the problem of uneven cell size, influence Foaming material strength performance and thermal insulation properties, uneven cell distribution and other issues

Active Publication Date: 2021-02-12
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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  • Secondary amine and alcohol amine basic blowing agents and use for the preparation of polyurethane spray foam materials

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0070] 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≥7.9, decomposition temperature is 42°C-70°C.

preparation example 2

[0072] 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≥7.8, decomposition temperature is 42°C-70°C.

preparation example 3

[0074] 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≥7.8, decomposition temperature is 42°C-70°C.

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Abstract

Disclosed is a secondary amine and alcohol amine alkaline foaming agent and an application for preparing polyurethane spray foam materials. The invention discloses a polyurethane alkaline foaming agent containing the secondary 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 secondary amine salt compounds having a general formula (I) which is A<->[B<+>]p, wherein the B<+> is a cation of organic secondary amine B with +1 valence and theA<-> 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 of the organic secondary amine as the catalytic group and the solubilizing group in the preparation of the polyurethane spray foam material. More particularly, it relates to secondary amine / alcohol amine basic blowing agents and their use for the preparation of polyurethane spray 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 important raw material in the production of rigid polyurethane foam is the blowing agent. At present, these blowing agents are chlorofluoroca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/12C08J9/14C08L75/06C08L75/08
CPCC08J9/12C08J9/122C08J9/127C08J9/14C08J2203/06C08J2203/18C08J2375/06C08J2375/08
Inventor 毕玉遂毕戈华
Owner SHANDONG UNIV OF TECH