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Production process for dodecyl dimethyl dihydroxypropyl ammonium chloride

A technology of dodecyl dimethyl dihydroxypropyl ammonium chloride and dodecyl dimethyl tertiary amine is applied in the preparation of amino hydroxy compounds, the preparation of organic compounds, organic chemistry and other directions, which can solve the problem of product color Deep, the reaction temperature should reach 95 ℃, and the conversion rate should only be reached, so as to achieve the effects of low reaction temperature energy consumption, stable and reliable production process, and process safety.

Inactive Publication Date: 2017-08-29
RUGAO WANLI CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At this stage, dodecyl dimethyl dihydroxypropyl ammonium chloride is made of dodecyl dimethyl tertiary amine (containing a certain amount of tetradecyl dimethyl tertiary amine) and 3-chloro 1, 2 Propylene glycol is used as a raw material, and it is synthesized by reaction at a certain temperature, but the conversion rate is generally only 77%, and the reaction temperature must reach 95°C, and the product color is relatively dark

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: Inhale the measured 276KG dodecyldimethyl tertiary amine, 498KG water, and 80KG isopropanol into the reactor, turn on the stirring, and heat, then add the measured 3-chloro 1, 2 propylene glycol 146KG pumped into the dropping tank, when the material temperature reaches 75°C, open the dropping valve, drop 3-chloro-1, 2-propylene glycol, pay attention to the dropping speed, if the material temperature exceeds 85°C, the cooling water must be turned on for cooling , or adjust the rate of addition, the addition of 3-chloro-1,2-propanediol is completed, and the holding time is 2-3 hours. After the reaction, dodecyldimethyldihydroxypropylammonium chloride with an active substance content of 41.8% was obtained as a light yellow transparent liquid with a yield of 99%.

Embodiment 2

[0014] Example 2: The measured 276KG of dodecyldimethyl tertiary amine, 498KG of water, and 136KG of isopropanol were sucked into the reactor, and the subsequent operation process was consistent with that described in Example 1. After the reaction, dodecyldimethyldihydroxypropylammonium chloride with an active substance content of 42% was obtained as a light yellow transparent liquid with a yield of 99%.

Embodiment 3

[0015] Example 3: The measured 276KG of dodecyl dimethyl tertiary amine, 498KG of water, and 192KG of isopropanol were sucked into the reactor, and the subsequent operation process was consistent with that described in Example 1. After the reaction, dodecyldimethyldihydroxypropylammonium chloride with an active substance content of 40.5% was obtained as a light yellow transparent liquid with a yield of 99%.

[0016] Technical index of dodecyl dimethyl dihydroxypropyl ammonium chloride product:

[0017] Appearance: Colorless to pale yellow transparent liquid;

[0018] Active substance content (%): 40±2;

[0019] PH value: 6~9;

[0020] Free amine content (%): ≤1.

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PUM

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Abstract

The invention relates to a production process for dodecyl dimethyl dihydroxypropyl ammonium chloride. A synthetic process is characterized in that dodecyl(tetra) alkyl dimethyl tertiary amine (containing a certain amount of dimethyl tetradecyl amine) and 3-chloro-1,2-propanediol are used as raw materials and the synthetic process comprises four steps: sucking dodecyl dimethylamine, water and isopropanol into a reaction still; when the temperature of the materials reaches 75DEG C, dropwise adding the 3-chloro-1,2-propanediol; after dropping is ended, carrying out thermal insulation; after the reaction is ended, obtaining a product. The production process has the advantages that reaction raw materials are easy to obtain, and simplicity in operation is realized; reaction temperature is reduced, energy consumption of the reaction temperature is enabled to be lower, and a safe and green process is realized; reaction yield is as high as 99 percent, and the product can be colorless and has high purity; the production process is stable and reliable.

Description

technical field [0001] The invention relates to a production process of a novel cationic surfactant, belonging to the technical field of surfactants. Background technique [0002] Dodecyldimethyldihydroxypropylammonium chloride is a colorless to pale yellow transparent liquid, and is a new type of cationic surfactant; this product is widely used in pharmaceutical intermediates, bioengineering pharmaceuticals, electroplating, sterilization and disinfection , Mineral flotation, daily chemical industry, textile printing and dyeing, asphalt emulsification, construction, plastic processing, oil exploitation, petrochemical and other industries. [0003] At this stage, dodecyl dimethyl dihydroxypropyl ammonium chloride is made of dodecyl dimethyl tertiary amine (containing a certain amount of tetradecyl dimethyl tertiary amine) and 3-chloro 1, 2 Propylene glycol is used as a raw material, and it is synthesized by reaction at a certain temperature, but the conversion rate generally...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C213/02C07C215/10
CPCC07C213/02C07C215/10
Inventor 张捷
Owner RUGAO WANLI CHEM IND