Knobbe, Martens, Olson & Bear, LLP
Method of synthesizing trioxymethylene from formaldehyde by the catalytic action of an ionic liquid
The present invention relates to a method of synthesizing trioxymethylene from formaldehyde by the catalytic action of an acidic ionic liquid. In the method, formaldehyde solution with a concentration of 30˜80 wt % is used as reactant, and an ionic liquid is used as catalyst. The cation moiety of the catalyst is selected from either imidazoles cation or pyridines cation, and the anion moiety of the catalyst is selected from one of p-tolyl benzene sulfonate, trifluoromethyl sulfonate, and hydrogen sulfate. In the present invention, ionic liquid is used, for the first time, as a catalyst to synthesize trioxymethylene from formaldehyde. The catalyst can be circularly used for continuous sampling.
Lanzhou Institute of Chemical Physics Chinese Academy of Sciences
C
C07D
inventional
Chungu Zhonghua Zhen Xinzhi Enxiu Jing
Xia Tang Li Zhang Guo Chen