Solid non-hygroscopic trialkylamine oxides

Details Solid non-hygroscopic trialkylamine oxides Solid non-hygroscopic trialkylamine oxides

C - Chemistry, Metallurgy

07

C

134/27, 260/290.

C07C 291/04 (2006.01) C07D 295/24 (2006.01) C11D 1/75 (2006.01) C11D 3/26 (2006.01)

Patent

CA 2014201

SOLID NON-HYGROSCOPIC TRIALKYLAMINE OXIDES Abstract Solid non-hydroscopic trialkylamine oxide dihy- drates are made by reacting a trialkylamine with aqueous hydrogen peroxide in an inert solvent selected from organ- ic esters (e.g., ethyl acetate), aliphatic hydrocarbons (e g., heptane), cycloaliphatic hydrocarbons (e.g., cyclo- hexane), aromatic hydrocarbons (e.g., toluene), aromatic halohydrocarbons (e.g., chlorobenzene), dimethylformamide, dimethylacetamide and dimethylsulfoxide, in an amount that maintains a fluid stirrable reaction mixture. Upon comple- tion of the reaction, water content is adjusted, if neces- sary, to give a 2/1 mole ratio of water to tert-amine oxide and the product trialkylamine oxide dihydrate is recovered by crystallization from the solvent or by dis- tilling off the solvent to leave the product as a residual material or a flaked or extruded product.

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