4337-75-1Relevant articles and documents
Preparation method of fatty acyl taurine surfactant
-
Paragraph 0011, (2020/04/17)
The invention discloses a preparation method of a fatty acyl taurine surfactant. The preparation method comprises the following steps: putting fatty acid and anhydride into a reactor, slowly heating the materials to 80-160 DEG C, carrying out a reflux reaction process for 5-10 hours, carrying out vacuum degassing at vacuum degree of -0.08 MPa to -0.09 MPa at temperature of 100-150 DEG C for 2-10h,cooling the product to 50 to 90 DEG C, adding a taurine salt into the product, making the mixture react at the reaction temperature of 50-300 DEG C for 1-10 hours, and cooling the product to obtain afinished product. According to the method, by optimizing the reaction raw materials, acyl chloride with high risk is removed, and relatively mild raw materials are selected, so that the safety risk of the process is reduced; because the acyl chloride raw material is not selected any more, the target product can be obtained without purification treatment, the discharge of wastewater and the environmental protection pressure are reduced, meanwhile, the selected raw material is easy to obtain, the process is simple, the requirement on equipment is relatively low, and batch production can be realized.
Preparation method of surfactant
-
Paragraph 0019, (2020/04/17)
The invention discloses a preparation method of a surfactant. The preparation method comprises the following steps: adding fatty alcohol, a catalyst and an amino acid salt into a reactor; closing thereactor, and slowly heating to 200-300 DEG C; carrying out a thermal insulation reaction for 2-10 hours; degassing; and treating to obtain a finished product. According to the method, fatty alcohol and amino acid salt are selected and are subjected to a direct reaction, impurities such as chlorine ions and the like are not introduced in the process, and the target product is obtained through the direct reaction, so that the steps of acidification, salification or water washing desalination are omitted, and the use and the discharge of salt-containing wastewater or an organic solvent are reduced; and the original multi-step reaction is changed, the product is obtained through a one-step reaction, and no toxic or harmful solvent is used, so that the operation is convenient, the industrial production is easy to achieve, the product form of the prepared product can also be changed according to actual requirements, and the cost advantage and the application convenience advantage of the product are improved.
Method to Produce N-Acyl Amino Acid Surfactants Using N-Acyl Amino Acid Surfactants or the Corresponding Anhydrides as Catalysts
-
, (2015/05/26)
A process of producing N-acyl amino acid based surfactants of Formula I, wherein, R is selected from C6 to C22 alkyl group, R1 is selected from H, C1 to C4 alkyl, R2 is selected from all groups on α carbon of natural amino acids, R3 is selected from COOX, CH2—SO3X, X is selected from Li+, Na+ or K+. The process comprising steps of: A) preparing fatty acid chlorides by halogenating fatty acids with either phosgene or thionyl chloride in the presence of catalytic amount of same or other N-acyl amino acid surfactant of Formula I or anhydrides of same surfactant; andB) reacting fatty acid chloride of step (A) with an amino acid in the presence of a base.
