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Special cocamidopropyl betaine for firefighting foam extinguishing agent and preparation method of special cocamidopropyl betaine

A technology of cocamidopropyl betaine and foam fire extinguishing agent, which is applied to fire protection equipment and other directions, can solve the problems of great influence on foam performance and fire extinguishing performance, inability to quickly put out oil fires, etc., and achieves strong oleophobicity and accelerated The effect of fluidity and film-forming promotion

Active Publication Date: 2014-04-30
YANGZHOU COLIN DAILY CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the foam fire extinguishing agent products made of them are mixed with fresh water or sea water, the lipophilicity of the foam is too strong to quickly put out oil fires, which greatly affects the foam performance and fire extinguishing performance

Method used

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  • Special cocamidopropyl betaine for firefighting foam extinguishing agent and preparation method of special cocamidopropyl betaine
  • Special cocamidopropyl betaine for firefighting foam extinguishing agent and preparation method of special cocamidopropyl betaine
  • Special cocamidopropyl betaine for firefighting foam extinguishing agent and preparation method of special cocamidopropyl betaine

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Experimental program
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Embodiment Construction

[0071] 1. Synthesis process:

[0072] 1. Preparation method one:

[0073] The amount of raw materials to be taken is based on the molar ratio of medium chain triglyceride (MCT), dimethylpropylenediamine, KOH and sodium chloroacetate as 1:3.1:0.01:2.85.

[0074] Among them, among medium chain triglycerides (MCT), C8≥53%, and 36%≤C10≤47%.

[0075] Step 1: Add dimethylpropanediamine, KOH and medium-chain triglyceride (MCT) into the reactor and stir evenly, slowly raise the temperature to 130°C under the protection of nitrogen, and then keep it at 130-140°C for 6~ 8h. Sampling is carried out to detect the content of dimethylaminopropylamide, and when the content is greater than 95%, the reaction reaches the end point.

[0076] The reaction formula of this step is:

[0077]

[0078] Wherein R1, R2, R3 are respectively CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 (n-heptyl), CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 (n-nonyl) at least any one.

[0079]

[0080] ...

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Abstract

The invention discloses special cocamidopropyl betaine for a firefighting foam extinguishing agent and a preparation method of the special cocamidopropyl betaine and relates to the field of fire technology. The preparation method comprises the following steps: keeping warm and reacting dimethyl propanediamine and medium chain triglycerides till the content of dimethylaminopropyl amide in a mixed system is greater than 95% under KOH catalysis and nitrogen protection; cooling the materials, adding a sodium chloroacetate aqueous solution, and reacting till the content of an active substance in the system which is measured by using a phosphotungstic acid method is 29 + / - 2%; and finally adding lauramidopropyl betaine to the system to form a mixture. The process is short in reaction time, and the special cocamidopropyl betaine is applied to a freshwater type aqueous film-forming foam extinguishing agent and a seawater resistant type aqueous film-forming foam extinguishing agent.

Description

technical field [0001] The invention relates to the technical field of fire protection, in particular to the production technology of special cocamidopropyl betaine for foam fire extinguishing agent. Background technique [0002] In recent years, the domestic and foreign requirements for cocamidopropyl betaine for fire-fighting foam fire extinguishing agents gradually tend to be environmentally friendly, multi-functional, and high-efficiency. Cocamidopropyl betaine produced in my country is mostly used in the field of daily chemical products such as detergents. When it is used in the field of fire-fighting foam fire extinguishing agent, its comprehensive effect is not ideal. Trace it to its cause, be because when being used for fire-fighting foam fire extinguishing agent, the problem of the oleophobicity of its foam, hydrophilicity has not been well solved, does not meet the professional requirement. [0003] The principle of fire extinguishing with foam fire extinguishing ...

Claims

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Application Information

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IPC IPC(8): A62D1/02
Inventor 童洁宗万承
Owner YANGZHOU COLIN DAILY CHEM
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