Synthesis and application of alcohol amine with lengthened main carbon chain

An alcohol amine and carbon chain technology, applied in the production of cement grinding aids and chemical building materials, can solve problems such as the inability to obtain alcohol bases, and achieve the effect of good grinding aid effect.

Active Publication Date: 2021-06-08
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the existing trihydric alcohol amines are mainly prepared by reacting ammonia gas with ethylene oxide or propylene oxide, and only alcohol amines whose molecular structure is ethanol or isopropanol can be obtained, and the main chain cannot be obtained. Alcohol groups with carbon atoms above

Method used

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  • Synthesis and application of alcohol amine with lengthened main carbon chain
  • Synthesis and application of alcohol amine with lengthened main carbon chain
  • Synthesis and application of alcohol amine with lengthened main carbon chain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 14.9 g of triethanolamine to the flask, slowly add 3 ml of concentrated sulfuric acid while shaking to make the mixture uniform, and add 22.5 g of 36% hydrobromic acid into the dropping funnel. Then heat the reaction bottle to 100°C, react for 50 minutes, and then cool and distill. Then add 5ml of N-methylpyrrolidone, heat to 160°C and keep the temperature, slowly add potassium ferrocyanide solution, react for 60 minutes, then cool and distill. Finally, add 5 ml of 80% sulfuric acid aqueous solution, heat to reflux, and add lithium aluminum hydride, and distill after the reaction to obtain a novel alcohol amine with an extended main carbon chain.

Embodiment 2

[0027] Add 19.1 g of triisopropanolamine to the flask, slowly add 3 ml of concentrated sulfuric acid while shaking to make the mixture uniform, and add 22.5 g of 36% hydrobromic acid into the dropping funnel. Then heat the reaction bottle to 100°C, react for 50 minutes, and then cool and distill. Then add 5ml of N-methylpyrrolidone, heat to 150°C and keep the temperature, slowly add potassium ferrocyanide solution, react for 60 minutes, then cool and distill. Finally, add 5 ml of 80% sulfuric acid aqueous solution, heat to reflux, and add lithium aluminum hydride, and distill after the reaction to obtain a novel alcohol amine with an extended main carbon chain.

Embodiment 3

[0029] Add 16.3 g of diethanol monoisopropanolamine to the flask, slowly add 3 ml of concentrated sulfuric acid while shaking to make the mixture uniform, and add 22.5 g of 36% hydrobromic acid into the dropping funnel. Then heat the reaction bottle to 105°C, react for 50 minutes, and then cool and distill. Then add 5ml of N-methylpyrrolidone, heat to 170°C and keep the temperature, slowly add potassium ferrocyanide solution, react for 60 minutes, then cool and distill. Finally, add 5 ml of 80% sulfuric acid aqueous solution, heat to reflux, and add lithium aluminum hydride, and distill after the reaction to obtain a novel alcohol amine with an extended main carbon chain.

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Abstract

The invention discloses synthesis and application of alcohol amine with lengthened main carbon chain, and belongs to the field of chemical building materials. Under the action of a catalyst, trihydric alcohol amine is subjected to two-step substitution reaction, hydrolysis reaction and reduction reaction to obtain the novel alcohol amine (NAA). The novel alcohol amine obtained by the invention is added into cement as a cement grinding aid, has a better grinding aid effect than that of triethanolamine, and has a wide application prospect.

Description

technical field [0001] The invention relates to a synthesis method and application of a novel alcohol amine, which belongs to the field of chemical building materials and is mainly used in the direction of cement admixtures, especially in the field of cement grinding aid production. Background technique [0002] Cement grinding is one of the most important links in the cement production process, and the power consumption in the grinding process accounts for about 60% to 70% of the total energy consumption of cement production, of which the power consumption of cement product grinding accounts for 30% of the total power consumption. %~40%. The grinding process of cement is a process in which the particles of cement materials (such as clinker, admixture and gypsum, etc.) change from large to small, and it is also an energy conversion process in which electrical energy is converted into mechanical energy and then converted into surface energy of cement powder, and the energy co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C215/12C07C213/00C04B24/40C04B103/52
CPCC07C215/12C07C213/00C07C227/18C07C253/14C07C213/08C04B24/40C04B2103/52C07C229/12C07C255/24C07C209/74C04B7/362C04B7/52Y02P20/584Y02P40/10C07C211/15C07C229/16C04B24/121B01J27/02B01J31/0232C04B24/122C07C213/10C07C215/08
Inventor 王剑锋宋岩崔素萍兰明章刘晓王亚丽马晓宇
Owner BEIJING UNIV OF TECH
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