Ultranox 626 synthesis
- Product Name:Ultranox 626
- CAS Number:26741-53-7
- Molecular formula:C33H50O6P2
- Molecular Weight:604.69
![3,9-dichloro-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane](/CAS/GIF/3643-70-7.gif)
Yield:26741-53-7 99.6%
Reaction Conditions:
in water at 60; for 2 h;Inert atmosphere;Temperature;Time;
Steps:
1.3; 1.4; 1.5
(3) The product of the product dichloropentaerythritol diphosphite obtained in the step (2) is added dropwise to an aqueous solution of 2,4-di-tert-butylphenol having a concentration of 0.6 mol/L, 2,4-di-tert-butyl The molar ratio of phenol and dichloropentaerythritol diphosphite is 2.30:1, stirred by nitrogen, stirring speed is 800 rpm, and reacted at 60 ° C for 2 h, the hydrogen chloride gas formed by the reaction is sodium hydroxide solution. absorb;(4) The solvent is distilled off under reduced pressure at a temperature of 100 ° C and a pressure of 0.06 MPa, and then an appropriate amount of isopropanol is added, and the product is crystallized by stirring;(5) The product obtained in the step (4) is suction-filtered to obtain a white solid powder, which is bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite.
References:
Jiangsu Jiyi New Materials Co., Ltd.;Guo Jiaoyang CN108250240, 2018, A Location in patent:Paragraph 0034; 0037; 0038; 0106; 0108; 0110; 0112; 0114
