| abstract |
The present invention relates to a process for producing a straight chain polyglycerol, which comprises reacting glycerol with a main catalyst and a cocatalyst to produce a linear polyglycerol, whereby the reaction can be carried out in an environmentally friendly manner without using a solvent . Also, it is possible to produce linear polyglycerols, especially diglycerol and triglycerol, with high yield and high selectivity by suppressing the side reaction using a promoter capable of controlling the high activity of the main catalyst. |