Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for producing triacetin

A technology for the production of glyceryl acetate and its production method, which is applied in the direction of the preparation of the interaction between ester groups, organic chemistry, etc., can solve the problems of difficult product purification, large material circulation, long process route, etc., to solve serious corrosion problems, product The effect of high quality and widening application range

Active Publication Date: 2009-06-10
CHINA PETROLEUM & CHEM CORP +1
View PDF3 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process route is long, the material circulation is large, the corrosion is serious, and the product purification is difficult

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

example 1

[0022] In a 500ml reactor with electromagnetic stirring, add 150g of methyl acetate, 120g of rapeseed oil and 1% sodium methoxide by weight of the material. The reaction was carried out at 80°C and 0.15MPa, and the reaction time was 90min. Cooling, separation, the yield of glycerol acetate is 96.5%.

example 2

[0024] In a 500ml reactor with electromagnetic stirring, 150g of ethyl acetate, 200g of soybean oil and 2% potassium hydroxide by weight of the material were added. The reaction was carried out at 60° C. under normal pressure, and the reaction time was 60 minutes. After cooling and separation, the yield of glycerol acetate was 95.1%.

example 3

[0026] In a 500ml reactor with electromagnetic stirring, add 150g methyl acetate, 100g cottonseed oil and 0.5% sodium hydroxide by weight of the material, and the reaction is carried out at 150°C and 1.0MPa, and the reaction time is 30min. After cooling and separation, the yield of glycerol acetate was 97.4%.

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 provides a method for preparing acetin. The method comprises that: in the presence of alkali catalyst, grease reacts with acetate, and acetin and fatty acid ester are collected. The method has the advantages of: (1), producing the acetin directly by using the grease and the acetate, generating little side reaction, achieving high product quality and widely used by products; 2, avoiding using acetic acid and acid catalyst, solving the problem of serious corrosion existing in the conventional process and lowering requirements on equipment material and operation and maintenance costs; and 3, enlarging the application range of methyl acetate.

Description

technical field [0001] The invention belongs to the technical field of fine chemical production, and relates to a method for preparing glyceryl acetate. Background technique [0002] Glyceryl acetate, also known as glycerol acetate, is mainly used as an adhesive plasticizer for the formation of cellulose acetate tow filter rods; it is also used as an intermediate of fine chemical products, and can also be used as a solvent, disinfectant, fixative, food and adhesive additives. [0003] Glyceryl acetate is prepared from glycerin and acetic acid raw materials under the action of an acid catalyst. Because sulfuric acid is cheap and has high catalytic activity, it is the most commonly used catalyst, but it has strong corrosion, many side reactions, dark reaction liquid, troublesome post-processing of products, and serious environmental pollution. In order to reduce side reactions, p-toluenesulfonic acid can also be selected as a catalyst, but the reaction speed is slow, and the...

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): C07C67/02C07C69/18
Inventor 杜泽学阳国军闵恩泽
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com