Methods of producing and preserving alkylene glycol...

Details Methods of producing and preserving alkylene glycol... Methods of producing and preserving alkylene glycol...

C - Chemistry, Metallurgy

07

C

260/481.5, 260/4

C07C 67/26 (2006.01) C07C 67/62 (2006.01) C07C 69/587 (2006.01)

Patent

CA 2010485

The invention provides a method of producing alkylene glycol monosorbates which comprises reacting sorbic acid and an alkylene oxide having 2 to 4 carbon atoms in a certain system containing a solvent inactive to the alkylene glycol monosorbates, one or more iron catalysts and one or more compounds consisting of phenothiazines and alkylphenols, washing the obtained synthesized liquid with an aqueous (bi)carbonate solution, and then purify- ing the washed liquid by distillation, and a method of reserving the alkylene glycol monosorbates.

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