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

Method for method for synthesizing dihydromyrcenol from dihydro laurene using niobic acid catalyst

A technology of dihydromyrcenol and dihydromyrcene, which is applied in the field of synthesizing dihydromyrcenol from dimyrcene, can solve problems such as cumbersome post-processing procedures, increased maintenance costs, and corrosion of reaction equipment, and achieves easy separation and improved Compatibility, effect of avoiding contamination

Active Publication Date: 2009-02-04
俞忠华 +2
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The synthesis of dihydromyrcenol generally adopts inorganic liquid acid catalysts such as sulfuric acid. The acid strength is high, the catalytic activity is high, and the reaction temperature is low. The reaction product must be neutralized and washed with water to remove the catalyst sulfuric acid. Pollution, and inorganic acids such as sulfuric acid severely corrode reaction equipment, increasing maintenance costs

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for method for synthesizing dihydromyrcenol from dihydro laurene using niobic acid catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] Specific implementation plan

[0010] With reference to the drawings, the process flow of the present invention is: dihydromyrcene uses niobic acid as a catalyst, adopts a composite solvent of water and polyol, undergoes hydration reaction, filtration, standing for stratification, and vacuum distillation to obtain dihydromyrcene alcohol , The catalyst niobic acid is recycled.

[0011] Embodiment 1 of the present invention: In the reactor, 20g of niobic acid catalyst treated with sulfuric acid, 200g of propylene glycol and water composite solvent (W / W: 1:1), and 180g of dihydromyrcene with a content of 82% are respectively added to the reactor to maintain The temperature was at 12°C, and the reaction was stirred for 7 hours. After the reaction is completed, filter, stand for layering, after the crude dihydromyrcenol is dried, dihydromyrcenol is obtained by distillation under reduced pressure, the conversion rate of dihydromyrcene is 83.6%, and the selectivity of dihydromyrce...

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 method for synthesizing dihydrogen myrcene alcohol by using dihydrogen myrcene by adopting niobic acid catalyst, which comprises the following steps: niobic acid is used as catalyst; water and polyol are adopted as solvent, and the weight ratio of water and polyol is 1-2.3:1; the weight ratio of polyol complex solvent and dihydrogen myrcene is 1:1-2.5; under the low temperature condition, dihydrogen myrcene alcohol is obtained by the procedures of one-step hydration, filtration, standing and stratification, drying, reduced pressure distillation, etc.

Description

Technical field [0001] The present invention relates to a perfume synthesis method, and in particular to a method for synthesizing dihydromyrcenol from dimyrcene using a niobic acid catalyst. Background technology [0002] Dihydromyrcenol (chemical name: 2,6-dimethyl-7-octen-2-ol) has a strong fruity, floral, green, woody aroma, similar to white lemon aroma, and its aroma is found in soaps and Good stability in detergents. The synthesis of dihydromyrcenol generally uses inorganic liquid acid catalysts such as sulfuric acid. The acid strength is high, the catalytic activity is high, and the reaction temperature is low. The reaction product needs to be neutralized and washed with water to remove the catalyst sulfuric acid. The post-treatment process is cumbersome and causes environmental problems. pollution, and inorganic acids such as sulfuric acid seriously corrode reaction equipment and increase maintenance costs. Contents of the invention [0003] The purpose of the pr...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C07C33/025C07C29/04B01J23/20
Inventor 俞忠华周振华郑井泉
Owner 俞忠华
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