126-83-0Relevant articles and documents
Synthesis and properties of lauric acid-2-hydroxy-3-propane sulfonic acid sodium salt
Hao, Yulan,Yuan, Dandan,Wang, Yan,Qi, Ying,Zhang, Rongming
, p. 4449 - 4451 (2014)
The lauric acid-2-hydroxy-3-propane sulfonic acid sodium salt was synthesized by using sodium bisulfite, epichlorohydrin, sodium phosphate and lauric acid. The influence factors on reaction temperature, reaction time, the amount of catalyst and reactant molar ratio to the yield were investigated. The favorable conditions of synthesizing were determined:epichlorohydrin was added into the solution of sodium bisulfite of 85 °C, stirring for 2 h and left for 1.5 h. 3-Chloro-2-hydroxy-propane sulfonic acid sodium was synthesized. 3-Chloro-2-hydroxy-propane sulfonic acid sodium was mixed into the solution of sodium phosphate at 55 °C and 4 h reaction time. The 2,3-oxiranemethane sulfonic acid sodium salt was formed. 2,3-Oxiranemethane sulfonic acid sodium salt solution was dropped into the solution of lauric acid at 90 °C, the dropping time 0.5 h and left for 2.5 h. Lauric acid-2-hydroxy-3-propane sulfonic acid sodium salt was obtained. The yield was 85.2 % and was characterized by FTIR.
Synthesis, characterization and performance of unsaturated long-chain carboxybetaine and hydroxy sulfobetaine
Dong, Shuang-Jian,Li, Yun-Ling,Song, Yong-Bo,Zhi, Li-Fei
, p. 523 - 529 (2013)
The unsaturated long-chain carboxybetaine and hydroxy sulfobetaine were synthesized by the reaction of unsaturated octadecyl tertiary amine with sodium chloroacetate and 3-chloro-2-hydroxypropanesulfonic acid sodium salt, respectively. The structures of the two betaines were characterized by IR and 1H-NMR spectroscopy. The Krafft points of the two betaines are below 0 C and the isoelectric points are at pH 8.2 and 8.0, respectively. The surface tensions (γ CMC) at the critical micelle concentrations (CMC) were measured to investigate the surface activities of the prepared compounds when the pH is equal to 4.0, 6.5 and 10.0 at 50 C, respectively. Meanwhile, the corresponding saturated betaines were synthesized and determined for comparison. The double bond in the non-polar tail leads to a slightly higher CMC and a lower γ CMC. Though the CMC of the unsaturated betaine is slightly higher than that of saturated betaine for the double bond in the non-polar tail, the applied range of the unsaturated betaine is broader than corresponding saturated betaine for low Krafft point. The CMC and ΓCMC of the four betaines increase, but the pC20 decreases, with increasing pH. As a whole, the impact of pH on the performance of the four betaines is not very obvious.
Ammonium sulfonate zwitterionic silane coupling agent, siloxane ring body and preparation method of ammonium sulfonate zwitterionic silane coupling agent and siloxane ring body
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Paragraph 0039-0040; 0051; 0052-0053; 0065-0066, (2020/02/29)
The invention discloses an ammonium sulfonate zwitterionic silane coupling agent and a preparation method thereof, and a siloxane ring body and a preparation method thereof, wherein the structure formulas of the ammonium sulfonate zwitterionic silane coupling agent and a first intermediate and a second intermediate for preparing the ammonium sulfonate zwitterionic silane coupling agent are respectively represented by a formula (1), a formula (2) and a formula (3), R is C1-C3 alkyl, a is 0, 1 or 2, and R and R are methyl or ethyl. According to the invention, the ammonium sulfonate zwitterionic silane coupling agent and the siloxane ring body meet the application requirements of chemical modification and graft modification on the surface of materials, and can be commercialized. Theinvention further provides a method capable of efficiently synthesizing the zwitterionic ammonium sulfonate type ionic silane coupling agent and the siloxane ring body.
Amide quaternary ammonium salt sodium hydroxypropyl sulfonate asphalt emulsifier and preparation method thereof
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Paragraph 0053; 0056; 0066; 0075; 0083, (2018/05/01)
The invention discloses an amide quaternary ammonium salt sodium hydroxypropyl sulfonate asphalt emulsifier and a preparation method thereof. The asphalt emulsifier is prepared from coconut oil acyl propyl dimethyl tertiary amine, alcohol solvent, acrylic acid, epoxy chloropropane and sodium hydrogen sulfite according to a molar ratio of 1mol:(4.00-9.00)mol):(1.00-1.10)mol:(1.0-1.15)mol:(1.05-1.25)mol, wherein the alcohol solvent is alcohol, methanol or isopropanol. The asphalt emulsifier is easy-to-obtain in synthesis raw materials, low in production cost, simple in process and needless of high-temperature reaction and can emulsify asphalt different in type, emulsified asphalt prepared by using the asphalt emulsifier is exquisite, uniform and high in storage stability, and cationic emulsified asphalt can be prepared.
