Production process of benzyl benzoate

A technology of benzyl benzoate and production process, applied in the field of production technology of benzyl benzoate, can solve problems such as yield not exceeding 91%, reaction effect needs to be improved, etc., to ensure product yield and good phase transfer catalytic effect , the effect of high catalytic activity and stability

Active Publication Date: 2020-03-24
天津大加化工有限公司
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with other phase transfer catalysts, this method uses cheap and easy-to-obtain quaternary ammonium salts as phase tran...

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

[0041] A kind of production technology of benzyl benzoate, specifically comprises following operation steps:

[0042] (1) Esterification reaction: Add 50 parts of sodium benzoate solution (45%) into the reaction kettle, pump 40 parts of benzyl chloride into the metering tank through vacuum, then put it into the reaction kettle, and add 8 parts at the same time The raw material liquid 1 of the phase transfer catalyst was continuously stirred, and the steam valve was opened to raise the temperature to 120° C., so that the temperature of the reaction liquid in the kettle was 100° C., and the esterification reaction was carried out for 13 hours to obtain the first crude ester.

[0043] (2) One-time water washing: put the first crude ester into the water washing tank, add cleaning water (distilled water + first water layer and second water layer) to wash the first crude ester, wash out the salt generated during the reaction, and obtain The first brine and the second crude ester; at t...

Embodiment 2

[0047] The difference between embodiment 2 and embodiment 1 is:

[0048] In the esterification reaction, the raw materials are 70 parts of sodium benzoate solution 2 (50%), 50 parts of benzyl chloride, 10 parts of phase transfer catalyst raw material solution 2, and the temperature of the reaction liquid in the kettle is 125°C for the esterification reaction 18h; the first oil layer was added to the esterification reaction raw material, and the esterification reaction was continued for 2h; the second oil layer was added to the esterification reaction raw material, and the esterification reaction was continued for 1h. The yield of benzyl benzoate in the product finally obtained is 97.1%.

Embodiment 3

[0050] The difference between embodiment 3 and embodiment 1 is:

[0051] In the esterification reaction, the raw materials are 80 parts of sodium benzoate solution 3 (65%), 60 parts of benzyl chloride, 12 parts of phase transfer catalyst raw material solution 3, and the temperature of the reaction liquid in the kettle is 110°C for the esterification reaction 20h; the first oil layer is added to the esterification reaction raw material, and the esterification reaction is continued for 3h; the second oil layer is added to the esterification reaction raw material, and the esterification reaction is continued for 2h. The yield of benzyl benzoate in the product finally obtained is 97.5%.

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 the technical field of spice processing, particularly to a production process of benzyl benzoate. The method comprises the following operation steps: esterification reaction:adding benzyl chloride and a phase transfer catalyst raw material solution into a sodium benzoate solution, and carrying out an esterification reaction to obtain a first crude ester, wherein the phasetransfer catalyst raw material solution is obtained by mixing a catalyst and benzyl chloride; primary water washing: washing the first crude ester with water to obtain first salt water and a second crude ester; secondary water washing: washing the second crude ester with water to obtain second salt water and a third crude ester; and pressure reducing rectification: carrying out pressure reducingdistillation on the third crude ester, and condensing the distillate to obtain the finished product benzyl benzoate. Through the production process provided by the invention, the yield of benzyl benzoate is improved.

Description

technical field [0001] The invention relates to the technical field of spice processing, in particular to a production process of benzyl benzoate. Background technique [0002] Benzyl benzoate, also known as benzyl benzoate and benzyl benzoate, is a colorless oily liquid. Benzyl benzoate is an ester fragrance, used as a solvent for musk and a fixative for essence, and as a substitute for camphor in celluloid; as a plasticizer, especially when nitrocellulose is mixed with resin, it can Mixed with diethyl phthalate or dibutyl phthalate; used as a fixative for the preparation of strawberry, pineapple, cherry and other fruit-type food flavors and alcohol flavors; also used for jasmine, lily of the valley, ylang-ylang, gardenia, In daily chemical essences such as tuberose and lilac. In addition, benzyl benzoate can also be widely used in daily chemical fragrance formulations, mainly as a filler, and is also often used as a diluent for many high-viscosity synthetic fragrances. ...

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): C07C67/11C07C69/78B01J31/02
CPCC07C67/11B01J35/0006B01J31/0239B01J2231/49C07C69/78
Inventor 游少春易于伟
Owner 天津大加化工有限公司
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