Refining agent for synthesizing di-n-butyl sebacate and preparation method thereof

A technology of di-n-butyl sebacate and refined preparations, which is applied in the field of synthesizing the refined preparations of di-n-butyl sebacate and its preparation, can solve the problems of undiscovered patent documents, unfavorable economic benefits, and difficulty in reducing costs, etc. Achieve easy procurement, reduce production costs, and achieve simple effects

Inactive Publication Date: 2011-11-23
TIANJIN CHEM REAGENT RES INST
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The usual production method of di-n-butyl sebacate is direct esterification, and the color of the obtained product is yellow, which is difficult to sell as a product, and must be further refined, that is, to carry out a decompression refining treatment step. The problems in this type of preparation method: (1) Due to the need to use expensive high-vacuum pumps in the decompression refining treatment step, this method has the problems of many production equipment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of refined preparation, described refined preparation is mixed by potassium carbonate, magnesium hydroxide, gac, magnesium sulfate,

[0027] Its preparation method is:

[0028] Potassium carbonate, magnesium hydroxide, activated carbon, and magnesium sulfate are uniformly mixed, the weight ratio is 0.3:1:2:1.8, and the total weight is 0.5 kg.

[0029] A kind of preparation method of di-n-butyl sebacate, its steps are:

[0030] (1) Esterification step: drop into successively 100 kilograms of sebacic acid, 160 kilograms of n-butanols, 0.3 kilograms of concentrated sulfuric acid in a 300-liter reactor with a heating device, electric stirring, thermometer water circulation condenser and vacuum oil-water separator. Kilogram, under stirring, slight vacuum, heating to boiling reaction at the same time, keep boiling reflux state, continuously separate water from the oil-water separator, until no water is generated, stop heating, and the esterification reaction is termin...

Embodiment 2

[0036] A kind of refined preparation, described refined preparation is mixed by potassium carbonate, magnesium hydroxide, gac, magnesium sulfate,

[0037] Its preparation method is:

[0038] Potassium carbonate, magnesium hydroxide, activated carbon, and magnesium sulfate are uniformly mixed, the weight ratio is 0.3:1:2:1.8, and the total weight is 0.6 kg.

[0039] A kind of preparation method of di-n-butyl sebacate, its steps are:

[0040] (1) Esterification step: drop into successively 100 kilograms of sebacic acid, 160 kilograms of n-butanols, 0.3 kilograms of concentrated sulfuric acid in a 300-liter reactor with a heating device, electric stirring, thermometer water circulation condenser and vacuum oil-water separator. Kilogram, under stirring, slight vacuum, heating to boiling reaction at the same time, keep boiling reflux state, continuously separate water from the oil-water separator, until no water is generated, stop heating, and the esterification reaction is termin...

Embodiment 3

[0046] A kind of refined preparation, described refined preparation is mixed by potassium carbonate, magnesium hydroxide, gac, magnesium sulfate,

[0047] Its preparation method is:

[0048] Potassium carbonate, magnesium hydroxide, activated carbon, and magnesium sulfate were uniformly mixed, and the weight ratio was 0.3:1:2:1.8, and the total weight was 0.7 kg.

[0049] A kind of preparation method of di-n-butyl sebacate, its steps are:

[0050] (1) Esterification step: drop into successively 100 kilograms of sebacic acid, 160 kilograms of n-butanols, 0.3 kilograms of concentrated sulfuric acid in a 300-liter reactor with a heating device, electric stirring, thermometer water circulation condenser and vacuum oil-water separator. Kilogram, under stirring, slight vacuum, heating to boiling reaction at the same time, keep boiling reflux state, continuously separate water from the oil-water separator, until no water is generated, stop heating, and the esterification reaction is...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a refining agent for synthesizing di-n-butyl sebacate and a preparation method thereof. The method for synthesizing di-n-butyl sebacate comprises the steps of esterification, water washing, dealcoholization, refining and filtration, wherein the refining agent used in the refining step is prepared by mixing potassium carbonate, magnesium hydroxide, activated carbon and magnesium sulfate according to a certain ratio. The invention facilitates the industrial production and improves the production efficiency; as the high-vacuum refining step is omitted in the production process, the investment of high-vacuum pump equipment is avoided, thereby saving the equipment investment, lowering the production cost and improving the market competitiveness of the product; the refining agent is prepared by mixing potassium carbonate, magnesium hydroxide, activated carbon and magnesium sulfate according to a certain ratio, and each component is low in price and easy to purchase; the product quality and long-term storage stability of the product is simultaneously ensured; the preparation method is simple to implement and convenient to operate; and the investment of production equipment is saved, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the field of organic compound preparation, in particular to a refined preparation for synthesizing di-n-butyl sebacate and a preparation method thereof. Background technique [0002] Di-n-butyl sebacate, colorless clear liquid. Odorless. It can be miscible with ethanol, ether and acetone, etc., but insoluble in water. The freezing point is -11°C. The boiling point is 349°C. Refractive index (n20D) 1.4395. The flash point is 176°C. It can be used as a plasticizer and rubber softener, and is often used in cosmetics, spices and seasonings. [0003] In recent years, in the plastic industry and military production, di-n-butyl sebacate has been used more and more widely as an important organic compound and cold-resistant plasticizer. The usual production method of di-n-butyl sebacate is direct esterification, and the color of the obtained product is yellow, which is difficult to sell as a product, and must be further refined, t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C07C69/50C07C67/56C07C67/08
Inventor 张富强
Owner TIANJIN CHEM REAGENT RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap