Preparation method of dialkylphenol polyamine emulsifier, preparation of emulsified asphalt and application thereof

A technology of dialkylphenol polyamines and emulsifiers, which is applied in the field of preparation of emulsified asphalt and dialkylphenol polyamine emulsifiers. and other problems, to achieve the effect of large-scale popularization and application, good emulsification performance and high reactivity

Active Publication Date: 2018-07-03
JIANGSU SINOROAD TRANSPORTATION SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many reports on the preparation method of emulsifiers, such as: U.S. Patent No. 4,338,136 discloses the use of C 12-18 Long-chain fatty acids and divinyltriamine are used to prepare imidazoline asphalt emulsifiers under certain reaction conditions, but the reaction conditions are harsh and need to be reacted at high temperature, and the preparation cost is relatively high
Another example: Zhu Xianchun utilizes long-chain fatty acid and polyethylene polyamine reaction to prepare cationic emulsifier ("Henan Chemical Industry", 1987, 2), the emulsifier yield that adopts this method to obtain is lower, and effect is not ideal, cannot be used in a large scale Promote application
Medworth Vaccine Co., Ltd. utilizes dodecylphenol to react with aminoethylpiperazine to synthesize a series of asphalt emulsifiers (patent No. US 5019168, US4990591), but the cost of developing this emulsifier is relatively high, and the raw materials are not easy to obtain. limit its application

Method used

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  • Preparation method of dialkylphenol polyamine emulsifier, preparation of emulsified asphalt and application thereof
  • Preparation method of dialkylphenol polyamine emulsifier, preparation of emulsified asphalt and application thereof
  • Preparation method of dialkylphenol polyamine emulsifier, preparation of emulsified asphalt and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Preparation of double alkylphenol polyamine emulsifier of the present invention:

[0048](1) Add 20.6g (0.1mol) of octylphenol, 20.26g (0.2mol) of diethylenetriamine, 50ml of absolute ethanol, and 0.21g of 2-ethylimidazole into the reactor, raise the temperature to 80°C, and drop 37%~40% 16.6g (0.2mol) formaldehyde solution, add dropwise completely within 30-40 minutes, react for 4.5h after dropwise to obtain the intermediate.

[0049] (2) Cool the intermediate to 25°C, add 20.6g (0.1mol) of octylphenol and 10.13g (0.1mol) of diethylenetriamine, raise the temperature to 85°C, and then dropwise add a concentration of 37% to the reaction flask ~40% formaldehyde solution 16.6g (0.2mol), drop in 30-40 minutes, react 6h after dropping completely, ethanol is distilled off under reduced pressure, obtains yellow viscous liquid, detects through liquid chromatography and calculates yield to be 83.7%, reserved for experimentation.

[0050] The molecular weight of the final produ...

Embodiment 2

[0058] Preparation of double alkylphenol polyamine emulsifier of the present invention:

[0059] (1) Add 26.2g (0.1mol) of dodecanol, 32.19g (0.22mol) of triethylenetetramine, 50ml of water, and 0.69g of 1-phenylethylimidazole into the reactor, raise the temperature to 95°C, and drop the concentration Add 18.26g (0.22mol) of 37%-40% formaldehyde solution dropwise within 30-40 minutes, and react for 4.5h after the dropwise addition to obtain the intermediate.

[0060] (2) Cool the intermediate to 25°C, add 26.2g (0.1mol) of dodecylphenol and 17.55g (0.15mol) of triethylenetetramine, raise the temperature to 100°C, and then dropwise add 37% to 40 % 18.26g (0.22mol) formaldehyde solution, dripped within 30-40 minutes, reacted for 4h after the dropwise addition was complete, and distilled water under reduced pressure to obtain a yellow viscous liquid. The calculated yield was 79.6% through liquid chromatography. for experiments.

[0061] The molecular weight of the final product...

Embodiment 3

[0069] Preparation of double alkylphenol polyamine emulsifier of the present invention:

[0070] (1) Add 22g (0.1mol) of nonylphenol, 32.08g (0.22mol) of triethylenetetramine, 50ml of n-hexane, and 1.1g of sulfomethylimidazole into the reactor, raise the temperature to 80°C, and dropwise add a concentration of 37 17.85 g (0.215 mol) of formaldehyde solution of %-40% was added dropwise within 30-40 minutes, and the intermediate was obtained by reacting for 8 hours after the drop was completed.

[0071] (2) Cool the intermediate to 25°C, add 23.4g (0.1mol) of decylphenol and 14.63g (0.15mol) of tetraethylenepentamine, raise the temperature to 95°C, then add dropwise 17.02g (0.205 mol) 37%~40% (0.215mol) formaldehyde solution, drop in 30-40 minutes, react 5h after dropping completely, distill off n-hexane, obtain yellow viscous liquid, detect and calculate yield through liquid chromatography is 92.6%, reserved for experimentation.

[0072] The molecular weight of the final prod...

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Abstract

The invention discloses a preparation method of a duel-alkylphenol polyamine emulsifier, prepared emulsified asphalt and application thereof. The duel-alkylphenol polyamine emulsifier preparation method comprises the following steps of: (1) adding alkylphenol, polyethylene polyamine, a solvent and a catalyst into a reaction container to form a reaction system, heating, and dripping an aldehyde to react so as to obtain a midbody; (2) cooling the midbody to 0-25 DEG C, adding the alkylphenol and the polyethylene polyamine, heating again, dripping the aldehyde, after the reaction is completed, and distilling out the solvent, thereby obtaining a target product. As biological enzyme is adopted as the catalyst for synthesizing the emulsifier, the preparation method disclosed by the invention is high in reaction activity and environmentally friendly, and meawhile the prepared duel-alkylphenol polyamine emulsifier is good in adaptability with aggregates, and the water damage resistance of the aggregates can be improved. The raw materials used in the preparation process of the preparation method for the duel-alkylphenol polyamine emulsifier disclosed by the invention are all easy to obtain, no rigorous preparation conditions are needed in the process of synthesizing the emulsifier, the heating temperature is not very high, the yield is relatively high, and the synthesis process is relatively simple to operate.

Description

technical field [0001] The invention relates to a preparation method of an emulsifier for road construction, in particular to a preparation method of a dialkylphenol polyamine emulsifier, preparation of emulsified asphalt and application thereof. Background technique [0002] Emulsified asphalt is the liquid asphalt produced by asphalt and emulsifier under the action of a certain process, which is oil-in-water or water-in-oil. Emulsified asphalt is road asphalt that is usually used at high temperature, emulsified by mechanical stirring and chemical stabilization, diffused into water and liquefied into a road construction material with low viscosity and good fluidity at room temperature. It can be used at room temperature or with cold and damp stone. Emulsified asphalt is mainly used for road upgrading and maintenance, and can also be used for new road construction. [0003] In the long-term road maintenance practice, people have gradually realized that emulsified asphalt m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C213/02C07C213/10C07C215/50C08L95/00C08L71/02C08L9/06C08K5/18C08J3/03
CPCC07C213/02C07C213/10C08J3/03C08J2395/00C08L95/00C08L2205/03C07C215/50C08L71/02C08L9/06C08K5/18
Inventor 陈李峰潘友强耿磊孙雪伟吕浩李芳芳
Owner JIANGSU SINOROAD TRANSPORTATION SCI & TECH CO LTD
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