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Synthesis method of chemical reagent auxiliary agent containing acetate

A technology of chemical reagents and synthesis methods, applied in chemical instruments and methods, separation/purification of carboxylic acid esters, organic chemistry, etc., can solve problems such as excessive internal moisture, more impurities, and purity that cannot meet certain requirements, and achieve Improve the effect of finished products, improve the purity of the solution, and improve the quality of the effect

Pending Publication Date: 2021-01-15
锦州怡嘉科技有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0003] Among the existing synthetic methods containing acetate chemical auxiliary reagents, most of them are chemical auxiliary reagents obtained after processes such as mixing and purifying ethylene glycol mono- and acetate, and these contain acetate chemical auxiliary reagents It still contains more impurities, and there is more moisture inside, and the purity cannot meet certain requirements. For this reason, a synthetic method of chemical reagent additives containing acetate is proposed

Method used

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  • Synthesis method of chemical reagent auxiliary agent containing acetate

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Effect test

Embodiment 1

[0034] see figure 1 , the present invention provides a kind of technical scheme: a kind of synthetic method of chemical reagent auxiliary agent containing acetate, comprises the following steps:

[0035] S1, proportioning: 10 parts by weight of catalyst, 5 parts by weight of acetic acid, 1 part by weight of water and 10 parts by weight of methyl acetate are weighed and proportioned;

[0036] S2, primary mixing: pump 5 parts by weight of acetic acid, 10 parts by weight of water and 10 parts by weight of methyl acetate into a gravity-free heating mixer for preheating and mixing;

[0037] S3, secondary mixing: stop mixing after 3 minutes and add 10 parts by weight of catalyst, add 1 part by weight of water and 8 parts by weight of catalyst again, and start the gravity-free heating mixer again;

[0038] S4, primary filtration: filter and desalt the raw materials after heating and mixing;

[0039] S5, primary distillation: pump the raw material into the distillation tower, pressu...

Embodiment 2

[0055] see figure 1 , the present invention also provides a kind of technical scheme: a kind of synthetic method of the chemical reagent auxiliary agent containing acetate, comprises the following steps:

[0056] S1, proportioning: 12 parts by weight of catalyst, 6 parts by weight of acetic acid, 11 parts by weight of water and 1.3 parts by weight of methyl acetate are weighed and proportioned;

[0057] S2, primary mixing: pump 5 parts by weight of acetic acid, 10 parts by weight of water and 10 parts by weight of methyl acetate into a gravity-free heating mixer for preheating and mixing;

[0058] S3, secondary mixing: stop mixing after 3 minutes and add 12 parts by weight of catalyst, add 1.3 parts by weight of water and 9 parts by weight of catalyst again, and start the gravity-free heating mixer again;

[0059] S4, primary filtration: filter and desalt the raw materials after heating and mixing;

[0060] S5, primary distillation: pump the raw material into the distillation ...

Embodiment 3

[0076] see figure 1 , the present invention also provides a kind of technical scheme: a kind of synthetic method of the chemical reagent auxiliary agent containing acetate, comprises the following steps:

[0077] S1, proportioning: 15 parts by weight of catalyst, 10 parts by weight of acetic acid, 3 parts by weight of water and 15 parts by weight of methyl acetate are weighed and proportioned;

[0078] S2, primary mixing: 10 parts by weight of acetic acid, 113 parts by weight of water and 15 parts by weight of methyl acetate are pumped into a gravity-free heating mixer for preheating and mixing;

[0079] S3, secondary mixing: stop mixing after 5 minutes and add 15 parts by weight of catalyst, add 1.5 parts by weight of water and 10 parts by weight of catalyst again, and start the gravity-free heating mixer again;

[0080] S4, primary filtration: filter and desalt the raw materials after heating and mixing;

[0081] S5, primary distillation: pump the raw material into the dis...

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Abstract

The invention discloses a synthesis method of a chemical reagent auxiliary agent containing acetate. The synthesis method comprises the following steps of: S1, proportioning; S2, primary mixing; S3, secondary mixing; S4, primary filtration; S5, primary distillation; S6, extraction under reduced pressure; S7, final-stage ester solution exchange; S8, secondary distillation; S9, secondary filtration.During use, a user can fully mix chemicals such as acetate, acetic acid, ethylene glycol and the like through primary mixing and secondary mixing, so that more impurities in a solution are avoided, meanwhile, the solution is desalted through micro-jet extraction and high-pressure distillation after secondary mixing, the quality of the chemical auxiliary agent is improved; meanwhile, secondary pressurization is carried out on the auxiliary agent through secondary distillation to remove the solvent, moisture in the solution is removed through the final-stage ester solution exchange after secondary pressurization, so that the purity of the solution is improved; secondary filtration and screening are carried out on the solution through secondary filtration, and therefore the finished producteffect of the chemical reagent auxiliary agent containing acetate is improved again.

Description

technical field [0001] The invention relates to the technical field of synthesis of chemical reagent auxiliary agents, in particular to a synthesis method of chemical reagent auxiliary agents containing acetate. Background technique [0002] Acetate is a kind of chemical agent, which belongs to a kind of ester. Chemical reagent is a relative standard substance for chemical research and component analysis. It is an important condition for scientific and technological progress. It is widely used in the synthesis, separation, qualitative and quantitative analysis of substances. It can be said that they are the eyes of chemical workers. In the daily work of factories, schools, hospitals and research institutes, chemical reagents are inseparable. Chemical reagents have been widely used in industry, agriculture, medical and health, life sciences, inspection and quarantine, and environmental protection. Protection, energy development, national defense industry, scientific research,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/16C07C67/08C07C67/03C07C67/48C07C67/54C07C67/58C07C67/56
CPCC07C67/03C07C67/08C07C67/48C07C67/54C07C67/56C07C67/58C07C69/16
Inventor 马文旭宋蕾刘伟李梦菲徐俊王文军陈锋苏杭王艳林
Owner 锦州怡嘉科技有限公司
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