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Process for producing alpha-sulfo-fatty acid alkyl ester salt

A technology of sulfo fatty acid alkyl esters and fatty acid alkyl esters, which is applied in the field of preparation of α-sulfo fatty acid alkyl ester salts, and can solve problems such as unsatisfactory effects, limited composition of detergent compositions, and complicated preparation processes, etc. question

Inactive Publication Date: 2002-09-25
LION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0026] However, in the above-mentioned conventional preparation methods, due to the excessive use of lower alcohols, it is necessary to recover and purify the lower alcohols and then recycle them from the cost point of view, thereby complicating the preparation process.
At the same time, there is also the problem that the effect of improving the color tone only by bleaching treatment is not very satisfactory.
[0027] Moreover, in terms of improving odor, there are problems that the composition of the detergent composition is limited, and the preparation process is complicated by the distillation, hydrogenation, solvent extraction, centrifugation and other treatments of raw materials.

Method used

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  • Process for producing alpha-sulfo-fatty acid alkyl ester salt
  • Process for producing alpha-sulfo-fatty acid alkyl ester salt
  • Process for producing alpha-sulfo-fatty acid alkyl ester salt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0158] exist figure 2 [alpha]-Sulfo fatty acid alkyl ester salts were prepared in the pilot plant shown.

[0159] The raw materials used are fatty acid methyl esters obtained by esterification and distillation of palm kernel oil, coconut oil, and palm oil (trade names: Pastel M-14, Pastel M-16, Pastel M-180 (manufactured by Lion Oleochemical)) , After mixing in the required ratio, then undergo hydrogenation treatment to reduce its iodine value and purify the product. The raw material used in this example is a mixture of Pastel M-14 and Pastel M-16 in a weight ratio of 2:8.

[0160] The hydrogenation treatment was carried out by a conventional method, the addition amount of the hydrogenation catalyst SO-850 (trade name, manufactured by Sakai Chemical Co., Ltd.) was 0.1% by weight of the fatty acid methyl ester, and the reaction conditions were 170° C. for 1 hour. After hydrotreatment, the catalyst was removed by filtration.

[0161] The properties and carbon chain distribut...

Embodiment 2～4

[0200] Further, when the product was stored in a constant temperature room at 40° C. for one month, and then evaluated in the same manner as above, the evaluation result did not change.

[0201] Under the conditions shown in Table 3, the experiment was carried out in the same manner as in Example 1. Only Example 3 and Example 4 were subjected to the deodorization step. The results are shown in Table 3 together.

[0202] When evaluating the odors of Examples 2, 4 and Comparative Examples 1 to 3 in the same manner as in Example 1, immediately after the preparation was completed, the results of each product were △, and the results after one month were also △. No change. In addition, when the odor before and after the deodorization step of Examples 3 and 4 was evaluated in the same manner as in Example 1, the same evaluation as in Example 1 was obtained for each product.

[0203] It can be proved from Table 3 that the coloring inhibitor can improve the color tone, and even if...

Embodiment 10

[0212] use image 3 The shown tubular gas-liquid mixed phase flow-through reactor (pseudo-membrane reactor) replaces the tank reactor 1 for the sulfonation reaction.

[0213] A jacketed reaction mixer with a volume of 100 ml was used as the introduction part 26 . As the jacketed reaction tube 32 , four pipes with an inner diameter of 13.8 mm and a length of 2 m made of stainless steel SUS316L were arranged in parallel. These pipes are connected to each other by a connection pipe 34 having an inner diameter of 13.8 mm and a length of 1 m.

[0214]In the stirring tank 21, put into except the iodine value 0.05, all the other same raw material fatty acid methyl esters shown in Table 2, coloring inhibitor Glauber's salt (5% by weight of raw material), be heated to 50 ℃ then, make Glauber's salt in the liquid Evenly disperse in the phase, start the pump 22, and make the mixture return to the stirring tank 21 through the circulation pipe 24, so as to improve the mixing property of ...

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Abstract

A method for preparing α-sulfo fatty acid alkyl ester salts, the method comprising the following steps: in the presence of a coloring inhibitor, the fatty acid alkyl ester is brought into contact with sulfonated gas to carry out a sulfonation step; The esterification step of esterifying the product of the sulfonation step; the neutralization step after the esterification step to obtain a neutralized product; the bleaching step of bleaching the neutralized product to obtain a bleached product; and preferably the The bleached product is subjected to a deodorization step for deodorization. Thus, the preparation process of the α-sulfo fatty acid alkyl ester salt can be simplified, and the α-sulfo fatty acid alkyl ester salt in an ideal state such as light color close to white and less odor can be obtained.

Description

technical field [0001] The present invention relates to a preparation method of α-sulfo fatty acid alkyl ester salt. The method can prepare α-sulfo fatty acid alkyl ester in an ideal state such as a light color close to white and less odor by adopting a simple preparation process Salt. Background technique [0002] When α-sulfo fatty acid alkyl ester salt is used as a surfactant, due to its strong detergency, good biodegradability, and low negative impact on the environment, its performance as a detergent material is highly evaluated. α-sulfo fatty acid alkyl ester salt (hereinafter, abbreviated as α-SF) can be prepared by the following steps, that is, after the fatty acid alkyl ester is contacted with sulfonated gas to sulfonate, the α-sulfo fatty acid alkyl ester is obtained , and then neutralize it. [0003] Figure 10 It is a process flow diagram of an example of a conventional preparation method of α-sulfo fatty acid alkyl ester salt. [0004] The sulfonation step of...

Claims

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Application Information

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IPC IPC(8): C07C303/06C07C303/22C07C303/24C07C309/17C11D1/28
CPCC07C303/06C07C303/22C11D1/28C07C309/17
Inventor 田野哲雄吉屋昌久西尾拓的场诚二宫胁洋三
Owner LION CORP
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