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Tertiary and alkanolamine basic blowing agents and their use for the preparation of polyurethane spray foam materials

A foaming agent, basic technology, applied in the preparation of polyurethane spray foam materials, tertiary amine/alcohol amine basic foaming agent, in the field of preparation of polyurethane spray foam materials, can solve the problem of uneven cell size, Uneven cell distribution, affecting the strength and thermal insulation properties of foamed materials, 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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  • Tertiary and alkanolamine basic blowing agents and their use for the preparation of polyurethane spray foam materials

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0070] Add 3kg of trimethylamine (molecular weight 59) and 3kg of water into a transparent quartz glass reactor, stir evenly, seal the reactor, and then control the temperature between 40-65°C under constant stirring, and pass carbon dioxide 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≥7.6, decomposition temperature is 42°C-70°C.

preparation example 2

[0072] Add 3kg of triethylamine (molecular weight 101) and 3.5kg of water into a transparent quartz glass reactor, stir evenly, 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 2 was obtained. pH≥7.6, decomposition temperature is 42°C-70°C.

preparation example 3

[0074] Add 3kg of dimethylethylamine (molecular weight 73) and 2.5kg of water into a transparent quartz glass reactor, stir evenly, seal the reactor, and then control the temperature between 40-65°C under constant stirring , put carbon dioxide into the reactor, control the pressure not higher than 0.3MPa, control the temperature and react for 10 hours, release the pressure and release the product after cooling down to below 40°C. Compound 3 was obtained. pH≥7.6, decomposition temperature is 42°C-70°C.

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Abstract

Disclosed is a kind of polyurethane basic foaming agent comprising tertiary amine salt and propanolamine salt, the pH value of this basic foaming agent is between 8.5-9.5, and this foaming agent comprises: 1) contains the following general The first compound mixture (M1) of the organic tertiary amine salt compound class of formula (I): A ‑ [B + ] p (I), where B + Is the cation of +1-valent organic tertiary 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 1:1.0. Blowing agents are suitable for use in 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 2 The anion of the donor and the application of the new organic ammonium salt compound with the organic tertiary amine as the catalytic group and the solubilizing group in the preparation of the polyurethane spray foam material. More particularly, it relates to tertiary 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 chlorofluorocarbo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/08C08G18/48C08G18/42C08G18/18C08G101/00
CPCC08G18/18C08G18/4018C08G18/42C08G18/48C08G2101/00C08J9/08C08J2203/02C08J2375/08
Inventor 毕玉遂毕戈华
Owner SHANDONG UNIV OF TECH
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