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A kind of dicationic monoanionic tertiary amide type asphalt emulsifier and its preparation method

A technology of asphalt emulsifier and tertiary amide type, which is applied in the field of dicationic monoanion tertiary amide type asphalt emulsifier and its preparation, can solve the problems of unfavorable production workers' health and high irritation, and achieve the hydration layer and interface charge layer The effect of enhancing and increasing hydrophilicity

Inactive Publication Date: 2019-05-07
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it has been found through research that the performance of the dianionic and dianionic asphalt emulsifier needs to be further improved; in addition, acrylic acid is used as a raw material, which is more irritating, which is not conducive to the health of production workers.

Method used

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  • A kind of dicationic monoanionic tertiary amide type asphalt emulsifier and its preparation method
  • A kind of dicationic monoanionic tertiary amide type asphalt emulsifier and its preparation method
  • A kind of dicationic monoanionic tertiary amide type asphalt emulsifier and its preparation method

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preparation example Construction

[0062] In one embodiment, the present invention provides a kind of preparation method of dication monoanion tertiary amide type asphalt emulsifier, comprising the following steps:

[0063] (1) Mix octadecylamine, alcohol solvent and N,N-dimethylacrylamide to obtain reaction intermediate I, and intermediate I is C 18 h 37 NHCH 2 CH 2 CON(CH 3 ) 2 ;

[0064] (2) Mix low carbon number tertiary amine, industrial hydrochloric acid and epichlorohydrin, react to obtain reaction intermediate II, low carbon number tertiary amine is trimethylamine aqueous solution, triethylamine or triethanolamine aqueous solution, intermediate II is R is methyl (-CH 3 ), ethyl (-C 2 h 5 ) or hydroxyethyl (-C 2 h 4 OH);

[0065] (3) The prepared reaction intermediate II is added dropwise in the reaction intermediate I, and the mixed reaction obtains the reaction intermediate III, and the intermediate III is

[0066] R is methyl (-CH 3 ), ethyl (-C 2 h 5 ) or hydroxyethyl (-C 2 h 4 OH...

Embodiment 1

[0085] (1) Preparation of dicationic monoanionic tertiary amide type asphalt emulsifier:

[0086] 1) Add 269.5g octadecylamine, 260g isopropanol in the reactor, heat and stir to dissolve. Then gradually add 104.1g of N,N-dimethylacrylamide, and stir at 70°C for 3h.

[0087] 2) In another reactor, add 193.1g 33% (mass fraction) trimethylamine aqueous solution, gradually add 131.2g 30% (mass fraction) industrial hydrochloric acid, then gradually add 97.1g epichlorohydrin, stir and react at 50°C for 2.5h, Reaction intermediate A was obtained.

[0088] 3) The prepared reaction intermediate A was added dropwise to the synthesis product in the above step 1), and stirred at 70° C. for 2 h.

[0089] 4) 42.4g sodium hydroxide was dissolved in 80.0g water to obtain sodium hydroxide aqueous solution, 100.2g chloroacetic acid was dissolved in 200.0g water to obtain chloroacetic acid aqueous solution; sodium hydroxide aqueous solution was added dropwise in chloroacetic acid aqueous solut...

Embodiment 2

[0099] (1) Preparation of dicationic monoanionic tertiary amide type asphalt emulsifier:

[0100] 1) Add 269.5g octadecylamine, 260g isopropanol in the reactor, heat and stir to dissolve. Then gradually add 104.1g N,N-dimethylacrylamide, and stir the reaction at 70°C for 3h.

[0101] 2) Add 109.1g triethylamine to another reactor, gradually add 131.2g 30% (mass fraction) industrial hydrochloric acid, then gradually add 97.1g epichlorohydrin, stir and react at 50°C for 2.5h, and obtain reaction intermediate B.

[0102] 3) The prepared reaction intermediate B was added dropwise to the synthesis product in the above step 1), and stirred at 65° C. for 3 h.

[0103] 4) 42.4g sodium hydroxide was dissolved in 80.0g water to obtain sodium hydroxide aqueous solution, 100.2g chloroacetic acid was dissolved in 200.0g water to obtain chloroacetic acid aqueous solution; sodium hydroxide aqueous solution was added dropwise in chloroacetic acid aqueous solution to obtain sodium chloroaceti...

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Abstract

The invention discloses a dicationic and monoanionic tertiary amide asphalt emulsifier and a preparation method thereof. The asphalt emulsifier is prepared from the following raw materials of octadecylamine, an alcohol solvent, N,N-dimethylacrylamide, low-carbon tertiary amine, industrial hydrochloric acid, epoxy chloropropane and sodium chloroacetate at the molar ratio of 1mol:(4.00-9.00)mol:(1.00-1.08)mol:(1.02-1.10)mol:(1.02-1.10)mol:(1.02-1.08)mol:(1.02-1.10)mol. An amide group is introduced into a molecular structure of the prepared asphalt emulsifier through adding N,N-dimethylacrylamide to form the dicationic and monoanionic tertiary amide asphalt emulsifier, so that the hydrophilicity of the asphalt emulsifier and the compatibility of the emulsifier and asphalt are improved.

Description

technical field [0001] The invention relates to a dication and monoanion tertiary amide type asphalt emulsifier and a preparation method thereof, belonging to the technical field of fine chemicals. Background technique [0002] An emulsifier is an amphiphilic molecule composed of a non-polar hydrophobic group and a polar hydrophilic group. This structure makes the emulsifier form a directional and dense arrangement on the surface (interface) of the solution, changing the surface (interface) of the system. Surface chemistry. When the concentration of the emulsifier exceeds its critical micelle concentration CMC, the surface (interface) surface tension is reduced to the minimum, so that it has the functions of emulsification, defoaming, and dispersion. application. [0003] According to the different properties of the hydrophilic group of the emulsifier, the emulsifier is divided into anionic type, cationic type, zwitterionic type, nonionic emulsifying type and compound ioni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C231/12C07C237/06C08J3/03C08L95/00
CPCC07C231/12C07C237/06C07D301/27C07D303/36C08J3/03C08J2395/00C08L95/005
Inventor 施来顺于小梦马存飞
Owner SHANDONG UNIV
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