Splitting spent emulsions

摘要

Splitting of spent emulsions such as cooling lubricants comprises either saturating an emulsion, consisting of auxiliary aids, oil, water and an anionic emulsifier or an emulsifier combination of anionic and non-ionic surfactants, with carbon dioxide under pressure or reacting with carbonic acid-contg. water and then heating and/or cooling to form an org. and an aq. phase.