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Fatty acid amide MIPA as well as preparation method and application thereof

A fatty acid amide and fatty acid technology, applied in the field of non-ionic surfactants, can solve the problems of poor foaming performance, oxidative yellowing, darkening of product color, etc.

Pending Publication Date: 2021-01-15
GUANGDONG YESER IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Palmitoleic acid is an omega-7 monounsaturated fatty acid consisting of 16 carbon atoms and containing 1 double bond, so the hydrophobic group of palmitoleic acid isopropanolamide is C16 containing 1 double bond Alkyl, the foaming performance of the product is poor, and because palmitoleic acid contains an unstable double bond structure, it reacts at a higher temperature for a long time, and it is easy to be oxidized and yellowed, resulting in a darker color of the product

Method used

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  • Fatty acid amide MIPA as well as preparation method and application thereof
  • Fatty acid amide MIPA as well as preparation method and application thereof
  • Fatty acid amide MIPA as well as preparation method and application thereof

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preparation example Construction

[0044] The present invention provides a kind of preparation method of fatty acid amide MIPA described in above-mentioned technical scheme, comprises the following steps:

[0045] Raise the temperature of the fatty acid to 150°C-200°C, slowly add isopropanolamine dropwise, react at constant temperature for 6h-12h, and post-process to obtain fatty acid amide MIPA;

[0046] The fatty acid comprises 50-100 wt% of lauric acid, 0-25 wt% of myristic acid, 0-15 wt% of palmitic acid and 0-15 wt% of stearic acid.

[0047] The method provided by the invention adopts one-step reaction, the process is simple, no catalyst action is needed, and the content of free amine in the prepared product is low; the unreacted monoisopropanolamine is recovered and reused, and the cost is effectively reduced.

[0048] In the present invention, the molar ratio of the fatty acid to monoisopropanolamine is 1:1.0-1.5.

[0049] The time for the constant temperature reaction is 6h to 12h; in specific embodime...

Embodiment 1

[0065] Add 165g of lauric acid, 60g of myristic acid, 45g of palmitic acid and 30g of stearic acid into the reaction kettle, raise the temperature to 170°C, slowly add 135g of monoisopropanolamine dropwise, react at constant temperature for 12 hours, then vacuumize, the degree of vacuum is - 0.095MPa, recover the unreacted monoisopropanolamine, lower the temperature, and cool to obtain the crude product; after the crude product is refined, a white to light yellow solid is obtained, namely fatty acid amide MIPA.

[0066] The composition of the fatty acid amide MIPA prepared by embodiment 1 is shown in Table 1:

[0067] The composition of the fatty acid amide MIPA that table 1 embodiment 1 prepares

[0068] components Ratio / wt% Compound shown in formula 101 55.0 Compound shown in formula 102 20.0 Compound shown in formula 103 15.0 Compound shown in formula 104 10.0

[0069] After testing, the color (Gardner) of the product prepared in Exam...

Embodiment 2

[0071] Add 150g of lauric acid, 60g of myristic acid, 45g of palmitic acid and 45g of stearic acid into the reaction kettle, raise the temperature to 160°C, slowly add 130g of monoisopropanolamine dropwise, react at constant temperature for 11 hours, and then vacuumize, the degree of vacuum is - 0.098MPa, recover the unreacted monoisopropanolamine, lower the temperature, and cool down to obtain the crude product; after the crude product is refined, a white to light yellow solid is obtained, namely fatty acid amide MIPA.

[0072] The composition of the fatty acid amide MIPA prepared by embodiment 2 is shown in Table 2:

[0073] The composition of the fatty acid amide MIPA that table 2 embodiment 2 prepares

[0074] components Ratio / wt% Compound shown in formula 101 50.0 Compound shown in formula 102 20.0 Compound shown in formula 103 15.0 Compound shown in formula 104 15.0

[0075] After testing, the color (Gardner) of the fatty acid amid...

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Abstract

The invention provides fatty acid amide MIPA as well as a preparation method and application thereof. The fatty acid amide MIPA comprises the following components in percentage by weight: 50-100wt% ofa compound as shown in a formula 101, 0-25wt% of a compound as shown in a formula 102, 0-15wt% of a compound as shown in a formula 103 and 0-15wt% of a compound as shown in a formula 104. The fatty acid amide MIPA is light in color and luster and high in amide content, and has excellent thickening performance and foaming performance. Experimental results show that the color (Gardner) of the fattyacid amide MIPA is less than or equal to 2.0, the amide content is more than or equal to 97.0%, the acid value is less than or equal to 2.0 mgKOH / g, and the melting point is 49.0-54.0 DEG C.

Description

technical field [0001] The invention belongs to the technical field of nonionic surfactants, in particular to a fatty acid amide MIPA and its preparation method and application. Background technique [0002] Fatty acid amide MIPA belongs to the alkanolamide non-ionic surfactant, with mild performance, minimal irritation, good foam stabilization, rich and delicate foam; excellent thickening effect, and is compatible with other types of surfactants Excellent compounding properties. It can effectively improve the temperature resistance of the formula; it has a good fat-filling effect. Therefore, fatty acid amide MIPA surfactants are widely used in shampoos, shower gels, dish detergents, hand sanitizers, laundry detergents, laundry tablets and other products. [0003] The synthesis methods of fatty acid amide MIPA mainly include oil method, methyl ester method and fatty acid method. The grease method is to use coconut oil, palm kernel oil or palm oil, and react with monoisopr...

Claims

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Application Information

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IPC IPC(8): C07C231/02C07C231/24C07C233/18A61K8/19A61K8/20A61K8/365A61K8/42A61K8/44A61K8/46A61K8/86A61Q19/10
CPCA61K8/466A61K8/86A61K8/442A61K8/42A61K8/19A61K8/20A61K8/365A61Q19/10C07C231/02C07C231/24C07C233/18
Inventor 谢妃军余培荣梁子钦肖秋菊
Owner GUANGDONG YESER IND CO LTD
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