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Mixed system containing fatty acid type surfactant and its preparation method

The technology of surfactant and fatty acid is applied to the mixed system containing fatty acid type surfactant and the field of preparation thereof, which can solve the problems of easy crystallization and low concentration of fatty acid, and achieve the effects of easy popularization and application, and simple formula and preparation method.

Active Publication Date: 2022-01-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a mixed system containing fatty acid type surfactant and its preparation method in order to overcome the problems of low fatty acid concentration and easy crystallization in the prior art

Method used

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  • Mixed system containing fatty acid type surfactant and its preparation method
  • Mixed system containing fatty acid type surfactant and its preparation method
  • Mixed system containing fatty acid type surfactant and its preparation method

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preparation example Construction

[0018] The method for preparing a mixed system containing a fatty acid type surfactant provided by the invention comprises mixing a long-chain fatty acid with 11-14 carbon atoms, 3,3'-iminobis(N,N-dimethylpropylamine) and water Mix until the solid is dissolved, wherein the molar ratio between the long-chain fatty acid and 3,3'-iminobis(N,N-dimethylpropylamine) is 45-305:100, preferably 50-300:100 .

[0019] In the present invention, by combining specific long-chain fatty acids and amines, the use concentration of long-chain fatty acids can be increased, therefore, the content of the long-chain fatty acids can be as high as 20% by weight, preferably, based on the total weight of the mixed system As a basis, the content of the long-chain fatty acid is 0.1-20% by weight.

[0020] According to the present invention, the long-chain fatty acid is a fatty acid with 11-14 carbon atoms, preferably a straight-chain fatty acid, including saturated straight-chain fatty acid and / or unsatu...

Embodiment 1-34

[0030]According to the dosage shown in Table 1, weigh the long-chain fatty acid and IBDPA and put them in the sample bottle, then add deionized water; after airtight, the mixing method is constant temperature or repeated temperature rise and fall, see the mixing method column "constant temperature" or " repeated heating and cooling". The constant temperature method is to heat the sample to a certain temperature (see Table 1 "Temperature" column for details) and keep the temperature for a certain period of time (see Table 1 "Constant Temperature Time" column for details) until all the solids are dissolved to obtain a mixed system sample; Heating to a certain temperature (see Table 1 "Temperature" column for details) and constant temperature for a certain period of time (see Table 1 "Constant Temperature Time" column for details), then cool to about 0°C and keep the temperature for 10 minutes, and repeat the temperature rise and fall several times (see Table 1 for the number of r...

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Abstract

The invention relates to the field of surfactants, and discloses a fatty acid-containing surfactant mixing system and a preparation method thereof. The mixing system contains long-chain fatty acids with 11-14 carbon atoms, 3,3'-iminobis (N,N-dimethylpropylamine) and water, wherein the molar ratio between the long-chain fatty acid and 3,3'-iminobis(N,N-dimethylpropylamine) is 45-305:100 . On the other hand, the method for preparing a mixed system containing fatty acid surfactants disclosed in the present invention comprises combining long-chain fatty acids with 11-14 carbon atoms, 3,3'-iminobis(N,N-dimethyl Propylamine) and water were mixed until the solids dissolved. In addition, the invention also discloses the mixed system prepared by the above method. Even if the long-chain fatty acid exists in a relatively high concentration, the mixed system of the present invention can still be stored stably without crystallization. Moreover, the formula and preparation method of the present invention are simple and easy to popularize and apply.

Description

technical field [0001] The invention relates to the field of surfactants, in particular to a mixed system containing fatty acid surfactants and a preparation method thereof. Background technique [0002] Fatty acids and sodium salts of fatty acids are a class of surfactants with a wide range of applications, involving all aspects of life and civil use, petroleum exploration and chemical industry. Fatty acid surfactants are healthy and environmentally friendly, such as soaps used in daily life and chemical production. And it can be prepared through petroleum refining, or obtained in large quantities from animal and vegetable fats, and has the advantages of wide sources and low cost. Especially for the petrochemical industry, obtaining long-chain fatty acids from refined oil products has more cost advantages than long-chain alkylsulfonate sodium surfactants that are widely used now. However, fatty acid surfactants have poor solubility and are difficult to exist in a liquid h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K23/00C09K23/16C09K23/08
CPCC09K23/017
Inventor 罗俊杰吴春红黄铃卜少华
Owner CHINA PETROLEUM & CHEM CORP
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