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Ester cross-linked cardanol sulfonate negative-ion asphalt emulsifier and preparation method

A technology of cardanol sulfonate and asphalt emulsifier, applied in the preparation of the asphalt emulsifier, in the field of ester-crosslinked cardanol sulfonate anionic asphalt emulsifier, can solve the problems of acid adjustment, cost increase, pollution, etc., and achieve Pollution reduction, cost savings, and ease of use

Inactive Publication Date: 2018-11-02
江苏金阳新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, the commonly used emulsifiers in the market require acid adjustment in practical application, which increases the cost and produces certain pollution at the same time.

Method used

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  • Ester cross-linked cardanol sulfonate negative-ion asphalt emulsifier and preparation method
  • Ester cross-linked cardanol sulfonate negative-ion asphalt emulsifier and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation method of the ester-crosslinked cardanol sulfonate anionic asphalt emulsifier, the specific preparation steps are as follows:

[0022] (1) slowly drop concentrated sulfuric acid into toluene, the molar ratio of the concentrated sulfuric acid to the toluene is 0.1:1, to prepare a toluene solution of concentrated sulfuric acid;

[0023] (2) Put 0.5 mol of adipic acid and 1 mol of concentrated sulfuric acid in a toluene solution in a three-necked flask, stir to dissolve the adipic acid, then add 1 mol of cardanol and reflux at 110°C for 6 hours until the water is completely removed. Carry out elution purification to obtain cardanol intermediate.

[0024] (3) Dissolve the cardanol intermediate (20 mol) obtained in the first step in (40 mol) of dichloromethane, put it into a three-necked flask, then add 60 mol of chlorosulfonic acid dropwise, and stir at room temperature for 3 hours. The product was washed with excess hexane and extracted with methanol, and ...

Embodiment 2

[0026] The preparation method of the ester-crosslinked cardanol sulfonate anionic asphalt emulsifier, the specific preparation steps are as follows:

[0027] (1) slowly drop concentrated sulfuric acid into toluene, the molar ratio of the concentrated sulfuric acid to the toluene is 0.1:1, to prepare a toluene solution of concentrated sulfuric acid;

[0028] (2) Put 0.5 mol of adipic acid and 1 mol of concentrated sulfuric acid in a toluene solution in a three-necked flask, stir to dissolve the adipic acid, then add 1 mol of cardanol and reflux at 115°C for 3 hours until the water is completely removed. Carry out elution purification to obtain cardanol intermediate.

[0029] (3) Dissolve the cardanol intermediate (20 mol) prepared in the first step in (40 mol) of dichloromethane, put it into a three-necked flask, then add 60 mol of chlorosulfonic acid dropwise, and stir at room temperature for 1 hour. The product was washed with excess ethyl acetate and extracted with methanol...

Embodiment 3

[0031] The preparation method of the ester-crosslinked cardanol sulfonate anionic asphalt emulsifier, the specific preparation steps are as follows:

[0032] (1) slowly drop concentrated sulfuric acid into toluene, the molar ratio of the concentrated sulfuric acid to the toluene is 0.1:1, to prepare a toluene solution of concentrated sulfuric acid;

[0033] (2) Put 0.5 mol of adipic acid and 1 mol of concentrated sulfuric acid in toluene solution in a three-necked flask, stir to dissolve the adipic acid, then add 1 mol of cardanol and reflux at 112°C for 15 hours until the water is completely removed. Carry out elution purification to obtain cardanol intermediate.

[0034] (3) Dissolve the cardanol intermediate (20 mol) prepared in the first step in (40 mol) of dichloromethane, put it into a three-necked flask, then add 60 mol of chlorosulfonic acid dropwise, and stir at room temperature for 10 hours. The product was washed with excess ethyl acetate and extracted with methano...

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Abstract

The invention relates to an ester cross-linked cardanol sulfonate negative-ion asphalt emulsifier. The emulsifier is the ester cross-linked cardanol sulfonate negative-ion asphalt emulsifier which isobtained by reacting cardanol with hexanedioic acid to obtain a cardanol intermediate, and then reacting the cardanol intermediate with chlorosulfonic acid. The prepared emulsified asphalt is fine anduniform, and can be directly used without adjusting pH value.

Description

technical field [0001] The invention relates to the field of fine organic chemicals, in particular to an ester-crosslinked cardanol sulfonate anionic asphalt emulsifier and a preparation method for the asphalt emulsifier. Background technique [0002] my country's transportation and road business is in a period of steady growth. At the end of 2016, the total mileage of national highways was 4.6963 million kilometers, an increase of 119,000 kilometers over the previous year, of which the mileage of expressways exceeded 130,000 kilometers. The road density is 48.92 kilometers per square kilometer, an increase of 1.24 kilometers per square kilometer. The mileage of highway maintenance was 4.59 million kilometers, accounting for 97.7% of the total mileage of highways. In order to reduce the cost of pavement maintenance and make the maintenance effect obvious, the use of emulsified asphalt is of great significance to solve the contradiction between the current traffic developmen...

Claims

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Application Information

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IPC IPC(8): C07C303/32C07C309/42C08J3/03C08L95/00
CPCC07C67/08C07C303/32C07C309/42C08J3/03C08J2395/00C07C69/44
Inventor 肖富荣曹春霞贡月娥卢峰许虎君
Owner 江苏金阳新材料科技有限公司
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