A kind of mixed solvent mainly based on c6-c18 alkyl dimethyl amide and preparation method and application
An alkyl dimethyl amide, C6-C18 technology, applied in the preparation of carboxylic acid amides, the preparation of amino compounds, the preparation of organic compounds, etc., can solve the problem that the market demand of pesticide preparations cannot be met, the price is high, and the The problem of low supply of decylamide, etc., can increase the efficacy, inhibit the separation of crystallization, and improve the solubility.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0055] A preparation method of a mixed solvent based on C6-C18 alkyl dimethyl amide, specifically comprising the following steps:
[0056] (1), salt-forming reaction
[0057] Add 1000g of crude mixed fatty acid to the reaction kettle, then control the pressure to be 0.15Mpa and the flow rate to be 50L / h and feed dimethylamine into the reaction kettle, and the crude mixed fatty acid and dimethylamine are subjected to a salt-forming reaction. The bubbling phenomenon of the salt reaction solution is violent, when the temperature of the salt formation reaction solution in the reaction kettle no longer rises, the salt formation reaction ends, or the salt formation reaction solution obtained in the reaction kettle is sampled and detected, as the salt formation reaction solution is indicated by methyl red When the color of the agent is yellow, the salt-forming reaction is completed, and the feeding of dimethylamine is stopped;
[0058] (2), acylation reaction
[0059] Add 3 g of ca...
Embodiment 2
[0064] A preparation method of a mixed solvent based on C6-C18 alkyl dimethyl amide, specifically comprising the following steps:
[0065] (1), salt-forming reaction
[0066] With the step (1) of embodiment 1;
[0067] (2), acylation reaction
[0068] Add 5 g of catalyst to the salt-forming reaction solution obtained in step (1), and then control the temperature to be 120° C. to make the salt-forming reaction solution undergo a total reflux reaction for 2 hours;
[0069] Then, the pressure was controlled to be 0.2Mpa and the flow rate was 40L / h, and dimethylamine was introduced into the container again. At the same time, the temperature was controlled to be 155°C to carry out the acylation reaction for 5.5h. At this time, the acid value of the reaction solution obtained from the acylation reaction reached 2%. In the following time, the reaction was stopped, and the acylation reaction was completed to obtain the acylation reaction solution;
[0070] The catalyst is molybdenu...
Embodiment 3
[0073] A preparation method of a mixed solvent based on C6-C18 alkyl dimethyl amide, specifically comprising the following steps:
[0074] (1), salt-forming reaction
[0075] With the step (1) of embodiment 1;
[0076] (2), acylation reaction
[0077] Add 10 g of catalyst to the salt-forming reaction solution obtained in step (1), and then control the temperature to be 120° C. to make the salt-forming reaction solution undergo a total reflux reaction for 2 hours;
[0078] Then, the pressure was controlled to be 0.2Mpa and the flow rate was 40L / h, and dimethylamine was introduced into the container again. At the same time, the temperature was controlled to be 145°C to carry out the acylation reaction for 5.0h. At this time, the acid value of the reaction solution obtained from the acylation reaction reached 2%. In the following time, the reaction was stopped, and the acylation reaction was completed to obtain the acylation reaction solution;
[0079] The catalyst is molybden...
PUM
| Property | Measurement | Unit |
|---|---|---|
| acid value | aaaaa | aaaaa |
| acid value | aaaaa | aaaaa |
| freezing point | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More