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Hydrazinolamine salt compound and its preparation method and use

A hydrazine alkanolamine salt compound and a technology for the compound are applied in the fields of hydrazine alkanolamine salt compounds and their preparation and use, and can solve the problem of uneven cell size, uneven cell distribution, influence on the strength and performance of foamed materials and Adiabatic properties, etc.

Active Publication Date: 2020-03-10
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 (such as water) in the prior art cannot be dispersed into the foaming composition at the molecular level, thereby causing uneven distribution of cells and non-uniform size of cells, which ultimately affects the foaming properties of the foaming material. Strength properties and thermal insulation properties

Method used

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  • Hydrazinolamine salt compound and its preparation method and use
  • Hydrazinolamine salt compound and its preparation method and use
  • Hydrazinolamine salt compound and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A-1

[0286] The water of 1.4 tons of ammonium carbamate (molecular weight 78.07), 0.7 tons of ethylene glycol, and 0.9 tons is joined in the stainless steel autoclave with cooling water jacket (abbreviated as reactor in other embodiments below), Start the stirrer to slowly dissolve the ammonium carbamate (not necessarily completely dissolved), purge the reactor with nitrogen, then close the reactor and start stirring, and feed a total of 1.7 tons of propylene oxide (molecular weight 58.08, boiling point 34 ° C) , control the feeding speed of propylene oxide so that the pressure in the reactor is not higher than 0.6MPa, slowly raise the temperature under constant stirring, control the temperature below 70°C for 15 hours, the reaction is completed, and slowly lower the temperature to 50°C Control the degree of vacuum below 600 millimeters of mercury (preferably lower than 500mmHg) to slowly remove unnecessary water (for example, reach a water content lower than 20wt%) and unreacted pr...

Embodiment A-2

[0291] Add 1.4 tons of ammonium carbamate, 0.7 tons of ethylene glycol, and 0.9 tons of water into a stainless steel reactor with a cooling jacket, start stirring, so that the ammonium carbamate is slowly dissolved (not necessarily completely dissolved), and the reaction After the system is treated and protected by nitrogen gas, it is heated up, the temperature is controlled at 45-70°C, and the pressure is controlled not to exceed 0.6MPa, and then a total of 1.3 tons of ethylene oxide (molecular weight 44.05) is slowly added in batches, and after the addition is completed, control The temperature is 45-70°C, the pressure is below 0.6MPa and the reaction is stirred for 5 hours, then the temperature is lowered to 50°C, and unnecessary water (such as reaching a water content lower than 30wt%) and unreacted epoxy is removed under reduced pressure at 600mHg Ethane, the product is released after cooling down to below 40°C, and compound A-2 is obtained. The viscosity is about 250, pH...

Embodiment A-3

[0292] Embodiment A-3 (the present invention is preferred)

[0293] Add 1kg of ammonium carbamate and 1kg of water into the reactor, dissolve under stirring (allowing the presence of undissolved ammonium carbamate), purging the reactor with nitrogen, and then add 2kg of propylene oxide to the transparent quartz glass In the reactor, start stirring, 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 strange phenomenon suddenly appears : The turbid and opaque mixture instantly turns into a transparent or clear solution, continue to react for 8 hours, then cool down to 50°C, remove unnecessary water and unreacted propylene oxide under a vacuum of 600 mm Hg, and cool down to 40°C The product is released after the temperature is below ℃. The reaction time ensures that the reaction is complete according ...

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Abstract

The invention relates to a hydrazino-alcohol amine salt compound with a general formula (I) as shown in the specification. In an An-[Bm+] p(I) formula, An- is a negative ion which is used as a CO2 donor and has -n valent, wherein n=1, 2 or 3, Bm+ is or comprises an ammonium ion, a hydrazine ion and / or an organic amine B positive ion, m= 1-10, p is greater than 0 and smaller than or equal to n / m, and An- is selected from one or more of the following negative ions: (a) amino formate or hydrazino-formate, (b) carbonate, (c) formate, (d) bicarbonate, (e) organic single carbonate, (f) organic polyamino formate, (g) original formate, or (h) organic polycarbonate, and at least one of An- and Bm+ comprises hydrazine and / or comprises hydrazino or substituted hydrazino. The compound in the general formula (I) is provided with at least one hydroxyalkyl which is connected with an N atom, namely, the compound is provided with alkylol amine residue. The hydrazino-alcohol amine salt compound can be used as a polyurethane foaming agent, and most of foaming agents can be used as a polystyrene foaming agent or a polyvinyl chloride foaming agent.

Description

technical field [0001] The invention relates to an alcohol amine salt compound with a hydrazine group, a preparation method thereof and an application as a foaming agent in foaming materials such as polyurethane foam, PVC foaming material or polystyrene foaming. [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 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. [0004] At pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C241/02C07C243/14C08J9/10C08L75/04C08L27/06C08L25/06
CPCC07C241/02C08J9/104C08J2203/04C08J2325/06C08J2327/06C08J2375/04C07C243/14
Inventor 毕戈华毕玉遂
Owner SHANDONG UNIV OF TECH
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