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

A kind of dicationic asphalt emulsifier containing ethoxy group and its preparation method and application

An asphalt emulsifier, dicationic technology, applied in building components, building insulation materials, buildings, etc., can solve problems such as reducing the stability of emulsified asphalt, and achieve the effects of reducing demulsification speed, low production cost, and improving stability.

Inactive Publication Date: 2017-09-12
HEBEI UNIV OF TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, from a structural point of view, the emulsifier not only contains cations but also carboxylate anions, which reduces the stability of emulsified asphalt

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
  • A kind of dicationic asphalt emulsifier containing ethoxy group and its preparation method and application
  • A kind of dicationic asphalt emulsifier containing ethoxy group and its preparation method and application
  • A kind of dicationic asphalt emulsifier containing ethoxy group and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1 (preparation and structural analysis of the dicationic asphalt emulsifier containing ethoxy group)

[0030] One, the preparation of intermediate B:

[0031] 2.97g (0.01mol) of octadecyldimethyl tertiary amine and 1.11g (0.012mol) of epichlorohydrin were dissolved in absolute ethanol, and stirred with magnetic force at 55°C for 8 hours, cooled to room temperature and distilled under reduced pressure. After washing with acetone, suction filtration, and vacuum drying at 40°C, intermediate B was obtained with a yield of 87.3%.

[0032] Two, the preparation of intermediate C:

[0033] 11.64g (0.02mol) fatty alcohol polyoxyethylene ether (9) is dissolved in n-hexane, add 0.322g (0.001mol) tetrabutylammonium bromide, add 0.96g (0.024mol) sodium hydroxide, stir to make it dissolve After 30 minutes, add the intermediate B obtained above, stir the reaction at 60°C for 10 hours, cool to room temperature, distill under reduced pressure, wash with ethyl acetate and ac...

Embodiment 2

[0049] 1. Preparation of ethoxy-containing dicationic asphalt emulsifier:

[0050] 14.85g (0.05mol) of octadecyldimethyl tertiary amine and 5.55g (0.06mol) of epichlorohydrin were dissolved in absolute ethanol, and stirred with magnetic force at 55°C for 8 hours, cooled to room temperature and distilled under reduced pressure. Intermediate B is obtained.

[0051] 58.20g (0.10mol) fatty alcohol polyoxyethylene ether (9) is dissolved in n-hexane, add 1.61g (0.005mol) tetrabutylammonium bromide, add 4.80g (0.12mol) sodium hydroxide, stir to make it dissolve After 30 minutes, the above-mentioned intermediate B was added, and the reaction was carried out under magnetic stirring at 60° C. for 10 hours. After cooling to room temperature, the reaction was distilled under reduced pressure to obtain intermediate C.

[0052] Dissolve the above intermediate C in n-hexane, add 0.81g (0.0025mol) tetrabutylammonium bromide, add 3.0g (0.075mol) sodium hydroxide, stir to dissolve, add 15.15g ...

Embodiment 3

[0058] 1. Preparation of ethoxy-containing dicationic asphalt emulsifier:

[0059] Except that 58.20g fatty alcohol polyoxyethylene ether (9) was replaced with 49.40g fatty alcohol polyoxyethylene ether (7), others were the same as in Example 2. The obtained asphalt emulsifier is used for future use.

[0060] 2. Preparation of emulsified asphalt:

[0061] According to the method of Example 2, the emulsifier obtained above was used to emulsify asphalt. The data of various performance tests are: the emulsified asphalt is cationic, can be stored stably for 7 days, the evaporation residue is 61.2%, and the residue on the sieve is 0.05%. The time is 85 minutes. It meets the requirements of "Technical Specifications for Highway Asphalt Construction".

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

PropertyMeasurementUnit
quality scoreaaaaaaaaaa
Login to View More

Abstract

The invention relates to an ethoxy-containing dicationic asphalt emulsifier and its preparation method and application. The structural formula of the emulsifier is as follows. The preparation method is as follows: dissolve fatty alcohol polyoxyethylene ether in an organic solvent, add catalyst, add sodium hydroxide after dissolving, stir to dissolve, add intermediate B after 30 minutes, and react with magnetic stirring at 50-70°C After cooling to room temperature for 6 to 12 hours, distill under reduced pressure, wash, filter, and dry in vacuo at 40°C to obtain intermediate C; dissolve intermediate C in an organic solvent, add catalyst, add sodium hydroxide after dissolution, and then add Epoxypropyltrimethylammonium chloride, react for 6-12 hours, wash, filter with suction, and dry to obtain the product. The asphalt emulsifier of the invention has cheap raw materials, low production cost, simple preparation process and low reaction temperature, and the temperature required for the synthesis reaction is 40-70°C. Wherein n=12, 14, 16 or 18, m=3, 5, 7, 9, 15, 20 or 25.

Description

technical field [0001] The invention relates to a preparation method and application of a novel asphalt emulsifier, in particular to a preparation method of an ethoxy-containing dicationic asphalt emulsifier and its application in emulsifying asphalt. Background technique [0002] In recent years, in order to speed up the speed of road construction, the transportation department has vigorously promoted the use of emulsified asphalt, especially as the road network structure is becoming more and more perfect, the regular maintenance and repair of the paved road surface is becoming more and more important, especially to meet the requirements of slurry sealing The slow-cracking and fast-setting asphalt emulsifier required by the layer technology has become a hot spot in current research and application. Cationic asphalt emulsifiers, especially quaternary ammonium salt cationic emulsifiers, have become the most widely used asphalt emulsifiers due to their strong adhesion to stone...

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 Patents(China)
IPC IPC(8): C08J3/03C08L95/00C08G65/337C08G65/333
Inventor 王月欣高雅芹张倩孟清张广林
Owner HEBEI UNIV OF TECH
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