Composite foaming agent containing hexafluorobutene and organic alcohol amine salt compound

A technology of composite foaming agent and hexafluorobutene, which is applied in the preparation of organic compounds, organic chemistry, preparation of aminohydroxy compounds, etc., can solve the problems of decreased thermal insulation performance, influence on strength performance and thermal insulation properties of foamed materials, and outstanding problems.

Active Publication Date: 2019-04-26
SHANDONG UNIV OF TECH
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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
[0008] In addition, in the prior art, hexafluorobutene (boiling point about 33°C, trade name FEA-1100) is used as polyurethane foaming agent, but its production cost and sales price and the polyurethane foam prepared by using it as foaming agent The performance of the material is still insufficient, especially the thermal insulation performance at low temperature or ultra-low temperature is significantly reduced and the deformation at low temperature or ultra-low temperature (because the foaming agent becomes liquid, the vapor pressure in the cell becomes lower, and the bubble collapse phenomenon prominent) very serious

Method used

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  • Composite foaming agent containing hexafluorobutene and organic alcohol amine salt compound
  • Composite foaming agent containing hexafluorobutene and organic alcohol amine salt compound
  • Composite foaming agent containing hexafluorobutene and organic alcohol amine salt compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A-1

[0095] The water of 1.4 tons of ammonium carbamate (molecular weight 78.07), 1.2 tons is joined in the stainless steel autoclave with cooling water jacket (referred to as reactor in other embodiments below), start agitator, make carbamic acid Ammonium is dissolved, and the reactor is purged with nitrogen, then the reactor is closed and stirred, and a total of 1.90 tons of propylene oxide (molecular weight 58.08, boiling point 34° C.) is introduced to control the feed rate of propylene oxide so as to control the pressure in the reactor Not higher than 0.6MPa, slowly raise the temperature under constant stirring, control the temperature below 70°C and react for 15 hours, the reaction is completed, slowly lower the temperature to 50°C and control the vacuum degree below 600mmHg (preferably lower than 500mmHg) Slowly remove unnecessary water (such as reaching a water content lower than 20wt%) and unreacted propylene oxide, then release the vacuum, release the reactant after cooling...

Embodiment A-2

[0100] The ammonium carbamate of 1kg, the water of 1.1kg are joined in the reactor, dissolve under agitation, purging reactor with nitrogen, then add the propylene oxide of 2.1kg in transparent quartz glass reactor, start stirring, in Slowly raise the temperature under constant stirring, control the temperature between 50-60°C, and carry out the reaction under the condition that the pressure is not higher than 0.6MPa. When the reaction lasts for about 2 hours, a wonderful phenomenon suddenly appears: the turbid and opaque mixture instantly changes. Form a transparent or clear solution, continue to react for 8 hours, then cool down to 50°C, remove unnecessary water and unreacted propylene oxide at a vacuum of 600 mm Hg, and release the product after cooling down to below 40°C. The reaction time ensures that the reaction is complete according to the molar ratio. Compound A-2 was obtained. The viscosity is 200 centipoise, pH=9.1, and the decomposition temperature is in the range...

Embodiment A-3

[0102] The ammonium carbonate of 7kg and the ammonium carbamate of 7kg, the water of 15kg are joined in the reactor, dissolve under agitation, purging reactor with nitrogen, then add the propylene oxide of 32kg again in batches, under constant agitation slowly Raise the temperature, control the temperature between 45-70 ° C, control the pressure not higher than 0.6 MPa, react for 10 hours, then cool down to 50 ° C, control the temperature below 50 ° C, and vacuum below 600 mmHg to remove unnecessary water and unreacted propylene oxide, after cooling down to below 40°C, the vacuum is released to release the product, and compound A-3 is obtained. The viscosity is about 250 centipoise, pH=9, and the decomposition temperature is in the range of 45-70°C.

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Abstract

Provided is a composite foaming agent. The composite foaming agent contains 1) hexafluorobutene and 2) an alcohol amine salt mixture (MAA), wherein the alcohol amine salt mixture (MAA) contains an organic amine salt compound with the following formula (I): A<n->[B<m+>] (I), wherein A<n-> is selected from one or two or three of the following anions: (b) carbonate CO<3><2->, (c) formate HCOO<-> and (d) bicarbonate HO-COO<->. The composite foaming agent is suitable for being used as a polyurethane foaming agent, and an obtained polyurethane foam material has good heat insulation performance, cryogenic heat insulation performance and dimensional stability.

Description

technical field [0001] The invention relates to a composite foaming agent comprising hexafluorobutene and an organic alcohol amine salt compound, and its application in foaming materials such as polyurethane foam, PVC foaming material or polystyrene foaming. 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. Because of their damage to the ozone layer, governments of various countries have already signed the "Montreal Protocol" international convention to restrict, phase out, and ban the use of such products. Production and use, China is also a signatory to the agreement. [0003] At present, the se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/08C08J9/14C08L75/08C08L75/06
CPCC08J9/08C08J9/146C08J2375/08C08J2375/06C08J2203/02C08J2203/162C08J2203/204C08J2203/184C07C241/02C07C243/14C08J2375/04C08J9/122C08J2203/06C08J2203/08C08J9/0028C08G18/7664C08G18/48C08G18/5027C08G18/42C08G18/4018C08G18/2063C08G18/482C08G18/3271C08G18/6688C08G18/3275C08G18/225C08G18/1816C08G18/163C08G2110/0025C08J9/10C08J9/04C08J9/125C08G18/10C08J9/104C08J2203/04C08J2203/10C07C213/08C07C215/06C08J2203/142C08J2203/164C08J2203/182
Inventor 毕戈华毕玉遂
Owner SHANDONG UNIV OF TECH
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