4337-75-1

Usage

Flammability and Explosibility

Nonflammable

Purification Methods

It is prepared from methyldecanoate (at 180o under N2) or decanoyl chloride and sodium N-methylethane sulfonate and purified by dissolving it in H2O and precipitating by addition of Et2O. It decomposes on heating. [Desseigne & Mathian Mém Services Chim Etat Paris 31 359 1944, cf. Chem Abstr 41 705 1947.]

InChI:InChI=1/C15H31NO4S/c1-3-4-5-6-7-8-9-10-11-12-15(17)16(2)13-14-21(18,19)20/h3-14H2,1-2H3,(H,18,19,20)

Upstream product

• 112-16-3 n-dodecanoyl chloride 
• 4316-74-9 2-methylamino-1-ethanesulphonic acid sodium salt 
• 143-07-7 lauric acid 
• 1562-00-1 sodium 2-hydroxyethanesulfonate 
• 74-89-5 methylamine 
• 108-24-7 acetic anhydride 
• 112-53-8 1-dodecyl alcohol 

Relevant academic research and scientific papers

Preparation method of fatty acyl taurine surfactant

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.

Method for synthesizing fatty acyl amino acid surfactant by using direct method

The invention discloses a method for synthesizing a fatty acyl amino acid surfactant by using a direct method. The method comprises the following steps: (1) adding fatty acid, methylamine and hydroxyethyl sulfonate into a reactor; (2) closing the reactor, and slowly heating to 150-300 DEG C; (3) carrying out a heat preservation reaction for 2-10 hours; (4) distilling to remove unreacted methylamine; and (5) treating to obtain a finished product. According to the invention, fatty acid, methylamine and sodium isethionate are selected to be 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 purification steps such as acidification, salification and the likeare omitted, and the use and discharge of salt-containing wastewater or an organic solvent are reduced; and the operation is convenient, the industrial production is easy to realize, the product formof 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.

Preparation method of surfactant

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.

A Laurel acyl methyl taurine sodium synthetic method

The invention discloses a high-conversion rate synthesis method for lauroyl-sodium methyl taurate. The high-conversion rate synthesis method comprises the following steps: mixing lauric acid with MgO, acetic acid and liquid paraffin; introducing nitrogen to replace air, heating to 100 DEG C to 110 DEG C and mixing for 5min; after heating, slowly dropwise adding N-sodium methyl taurate aqueous solution of which the mass fraction is 42 percent to 45 percent, controlling dropping speed so as to avoid the phenomenon that a large number of foams are generated from a reaction system and overflow, and continue to heat to 220 to 226 DEG C after the N-sodium methyl taurate aqueous solution is dropwise added and reacting for 4 to 5h; stop heating after the reaction is ended, and recovering. The high-conversion rate synthesis method disclosed by the invention is simple in process and easy in operation; the reaction time can be shortened, and the conversion rate (higher than 98 percent) of N-sodium methyl taurate is improved; after a crude product is recrystallized and dried, the purity of the crude product can reach more than 99 percent.

Method to Produce N-Acyl Amino Acid Surfactants Using N-Acyl Amino Acid Surfactants or the Corresponding Anhydrides as Catalysts

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.

METHOD TO PRODUCE N-ACYL AMINO ACID SURFACTANTS USING N-ACYL AMINO ACID SURFACTANTS OR THE CORRESPONDING ANHYDRIDES AS CATALYSTS

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 a carbon of natural amino acids, R3 is selected from COOX, CH2-SO3X, X is selected from Li+, Na+ or K+; said 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, Formula (II), wherein, R = C6 to C22 alkyl group, R1 = H, C1 to C4 alkyl, R2 = all groups on α carbon of natural amino acids, n = 0 to 4, X = C, SO and B) reacting fatty acid chloride of step (A) with an amino acid in the presence of a base under typical aqueous Schotten Baumann conditions such that said process does not employ a step of purification.