Unlock instant, AI-driven research and patent intelligence for your innovation.

Micro-emulsion for forming nano-emulsion in situ and preparation method of micro-emulsion

A nano-emulsion and micro-emulsion technology, applied in mixing methods, chemical instruments and methods, dissolution, etc., can solve the problems of high cost, high energy consumption, and easy-to-contaminate preparations, and achieve easy transportation, narrow particle size distribution, and stability Good results

Active Publication Date: 2012-10-03
SHANDONG UNIV
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional preparation methods of nanoemulsions are mainly high-pressure homogenization and ultrasonic methods. Although they can be mass-produced, they consume high energy and cost, and are easy to contaminate the preparations, and the stability of the prepared nanoemulsions is poor.

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
  • Micro-emulsion for forming nano-emulsion in situ and preparation method of micro-emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Based on 100 parts by weight, take 76 parts of white oil, 8.36 parts of Span80, 10.64 parts of Tween80, and 5 parts of water, wherein there are 19 parts of Span80 and Tween80, and the weight ratio of the two is 11:14. Then they are put together in a reactor and mixed evenly, and stirred at a speed of 500 rpm for 5 minutes at normal temperature to prepare a microemulsion that forms a nanoemulsion in situ.

[0019] The microemulsion high temperature stability, long-term stability, low temperature stability and the particle size distribution of the nanoemulsion formed in situ after dilution were investigated respectively according to the following methods:

[0020] 1. Stability Measurements:

[0021] Long-term stability: Place the product statically for a long time, observe the appearance, and pay attention to whether there is a clear delamination.

[0022] High temperature stability: Place the sample in a 70°C incubator for 5 hours, observe the appearance, whether it is...

Embodiment 2

[0031] Based on 100 parts by weight, take 45 parts of liquid paraffin, 19.8 parts of Span80, 25.2 parts of Tween80, 3.5 parts of NaCl and 6.5 parts of water, of which there are 45 parts of Span80 and Tween80, and the weight ratio of the two is 11:14 (0.7857). Dissolve 3.5 parts of NaCl in 6.5 parts of water to obtain an aqueous phase; then mix 45 parts of liquid paraffin, 19.8 parts of Span80 and 25.2 parts of Tween80 with the prepared aqueous phase in a reactor, and stir at 400 rpm for 10 Microemulsions that form nanoemulsions in situ can be prepared in minutes.

[0032] Detected by the method described in Example 1, the results are as follows:

[0033] Appearance

Embodiment 3

[0035] Based on 100 parts by weight, get 72 parts of liquid paraffin, 7.92 parts of Span80, 10.08 parts of Tween80, 1 part of D230, 1 part of NaCl and 8 parts of water, wherein there are 18 parts of Span80 and Tween80, and the weight ratio of the two is 11:14 ( 0.7857). Dissolve 1 part of D230 and 1 part of NaCl in 8 parts of water to obtain the water phase; then mix 72 parts of liquid paraffin, 7.92 parts of Span80 and 10.08 parts of Tween80 with the prepared water phase in the reactor, at room temperature at 200 rpm The microemulsion that forms the nanoemulsion in situ can be prepared by stirring at a speed of 10 min / min.

[0036] Detected by the method described in Example 1, the results are as follows:

[0037] Appearance

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 micro-emulsion for forming a nano-emulsion in situ and a preparation method of micro-emulsion. Every 100 parts by weight of the micro-emulsions comprise the following components in parts by weight: 45-76 parts of an oil phase, 19-50 parts of a nonionic surfactant, 0-3.5 parts of an inorganic salt, 0-3.5 parts of a surfactant aid and the balance of water. The preparation method comprises the following steps of: proportionally weighing each component respectively; dissolving the weighed oil phase and inorganic salt into water; and stirring at the rotating speed of 50-500 revolutions per minute at the normal temperature for 5-20 minutes, and standing. The micro-emulsion for forming the nano-emulsion in situ, prepared with the method, is a transparent or semitransparent liquid, is narrow in particle diameter distribution, has very high long-term stability, high-temperature stability and low-temperature stability, is consistent with the requirement of environmental protection and various industrial requirements, and is easy to transport. A nano-emulsion which has high stability and can be stored for a long time can be formed in situ by using the micro-emulsion.

Description

technical field [0001] The invention relates to a microemulsion capable of synthesizing nanoemulsion in situ and a preparation method of the microemulsion, belonging to the technical field of nanoemulsion preparation. Background technique [0002] Compared with ordinary emulsions, nanoemulsions have smaller droplet size, uniform dispersion, and certain dynamic stability. They can avoid obvious flocculation and coalescence for several months or even years. They are widely used in oil extraction, medicine, food, and building energy conservation , Concrete water-saving maintenance, agriculture, papermaking, wood-based panels, special ceramics, light industry and other fields can be better widely used. [0003] The traditional preparation methods of nanoemulsions are mainly high-pressure homogenization and ultrasonic methods. Although they can be mass-produced, they consume high energy and cost, and are easy to contaminate the preparations, and the stability of the prepared nano...

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): B01F3/08
Inventor 孙德军童坤郝京诚崔迎春梅贞
Owner SHANDONG UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com