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
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Embodiment 1
[0160] in figure 2 Alpha-sulfo fatty acid alkyl ester salt was prepared in the pilot plant shown.
[0161] 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, and then undergoing 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.
[0162] The hydrogenation treatment is carried out according to a conventional method, the addition amount of the hydrogenation catalyst SO-850 (trade name, manufactured by Sakai Chemical Co., Ltd.) is 0.1% by weight of the fatty acid methyl ester, and the reaction conditions are 170° C. for 1 hour. After the hydrotreatment, the catalyst was removed by filtration.
[0163] The properties and carbon chain distr...
Embodiment 2～4
[0202] Furthermore, after the product was stored in a constant temperature room at 40°C for one month, when it was evaluated in the same manner as described above, there was no change in the evaluation result.
[0203] 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 performed the deodorizing step. The results are shown in Table 3 together.
[0204] When evaluating the odor of Examples 2 and 4 and Comparative Examples 1 to 3 in the same manner as Example 1, the evaluation was performed immediately after the preparation was completed. The result of each product was △, and the result after one month was also No change. In addition, when the odor before and after the deodorizing 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.
[0205] It can be proved from Table 3 that the coloring inhibitor can improve th...
Embodiment 10
[0215] use image 3 The shown tubular gas-liquid mixed phase flow reactor (pseudo-membrane reactor) replaces the tank reactor 1 to perform the sulfonation reaction.
[0216] The introduction part 26 uses a reaction mixer with a jacket and a volume of 100 ml. The jacketed reaction tube 32 adopts a method in which four pipes are arranged in parallel with an inner diameter of 13.8 mm and a 2 m long pipe made of stainless steel SUS316L. These pipes are connected to each other by a connecting pipe 34 having an inner diameter of 13.8 mm and a length of 1 m.
[0217]In the stirring tank 21, except for the iodine value of 0.05, the fatty acid methyl ester and the coloring inhibitor Glauber's salt (5% by weight of the raw material) are charged with the same raw materials as shown in Table 2 except for the iodine value. The phase is uniformly dispersed, and the pump 22 is started to return the mixture to the stirring tank 21 through the circulation pipe 24 to improve the mixing of the mixtu...
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