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

Method for synthesis of terpineol by supersonic wave assistance

A technology of ultrasonic wave and terpineol, applied in the field of ultrasonic-assisted synthesis of terpineol, can solve the problems of low yield of terpineol, poor purity and aroma, short production cycle, etc., and achieves enhanced neutralization and washing efficiency, stable aroma, The effect of improving product yield

Active Publication Date: 2012-08-08
云南森美达生物科技股份有限公司
View PDF1 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the production of terpineol is mainly divided into two processes: one-step method and two-step method. The one-step method is that turpentine oil is directly hydrated into terpineol under the action of an acidic catalyst. The production cycle of this method is short, but the yield of terpineol is low. There are many by-products, poor purity and aroma, and the product is mainly used as No. 2 mineral dressing oil; the two-step method is that turpentine oil is first catalyzed by sulfuric acid to generate hydrated terpene diol, and then dehydrated, neutralized, and fractionated by dilute sulfuric acid to obtain terpineol. However, the production cycle of this method is long, the purity of the product is higher than that of the one-step method, and the by-products are less than that of the one-step method

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 synthesis of terpineol by supersonic wave assistance
  • Method for synthesis of terpineol by supersonic wave assistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The specific embodiment of the present invention is further illustrated by the following steps:

[0018] 1. Fractionation of turpentine oil, 95% of α-pinene and β-pinene can be obtained after turpentine oil fractionation.

[0019] 2. Hydration

[0020] (1) The feeding ratio (weight ratio) is pinene: 30% sulfuric acid = 1:1.7.

[0021] (2) In the 5M equipped with stirring device 3 In the enamel reaction pot, first add 30% sulfuric acid, then add turpentine and emulsifier Pingping plus Pergal, the amount added is 1000kg turpentine plus 400ml 10% Pingping. After the addition is complete, stir vigorously to make the reactant completely become an emulsion. During the reaction, pass through cold brine to keep the temperature at 28-30°C for 24 hours. A large amount of hydrated terpene diol crystals are precipitated,

[0022] (3) Static stratification. The hydrated terpene diol crystals float on the acid water, and the lower layer of acid water is removed and reused.

[...

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 discloses a method for synthesis of terpineol by supersonic wave assistance. The method is characterized in that through a two-step technology, hydration, dehydration and neutralization are carried out under supersonic wave assistance. Through preferable selection of appropriate supersonic wave parameters and utilization of cavitation of supersonic waves, reinforcement emulsification effects are improved; reaction rates and selectivity of hydration and dehydration are improved; efficiency of neutralization washing is reinforced; and the consumption of washing water is reduced.

Description

technical field [0001] The invention relates to a method for ultrasonic-assisted synthesis of terpineol. Background technique [0002] my country is rich in turpentine resources, and the annual output of turpentine oil is huge. One of its biggest uses is the production of spice-grade terpineol. Terpineol, also known as terpineol, is divided into spice-grade terpineol and pharmaceutical-grade terpineol. It is a colorless Viscous liquid. Terpineol has a long-lasting lilac aroma and smells of trees and flowers, and is widely used in spices, printing, daily chemicals, pesticides, mineral processing and other industries. At present, the production of terpineol is mainly divided into two processes: one-step method and two-step method. The one-step method is that turpentine oil is directly hydrated into terpineol under the action of an acidic catalyst. The production cycle of this method is short, but the yield of terpineol is low. There are many by-products, poor purity and aroma...

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): C07C33/14C07C29/60
Inventor 陈国强
Owner 云南森美达生物科技股份有限公司
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