Method for producing polymerized glycerin
At present, there are three main production methods of polyglycerol: ①Polyglycerol was extracted from crude glycerol distillation residue. ②It is directly synthesized from 3-chloro-1,2-propylene oxide or glycidyl and glycerol. ③The refined glycerol was heated and dehydrated under alkaline conditions to form polyglycerol. The first method is to extract crude glycerol distillation residue with alcohols…