Patent · US Expired

Process for reprocessing oil-in-water emulsions

US5372723A · kind A · utility

10Cited by

9References

6Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Johannes Cornelis De Geus · Leverkusen, DE
Rolf Kehlenbach · Bensberg, DE
Bernhard Lehmann · Appenweier, DE

Key dates

Filing date	Jun 23, 1993
Grant date	Dec 13, 1994
Priority date	—
Expiry date	Jun 23, 2013

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10M175/04
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Oil-in-water emulsions are reprocessed in a particularly effective manner by a process in which PA1 a) an oil-in-water emulsion is first subjected with the aid of a chemical emulsion breaker to a first breaking and PA1 b) the resulting water phase is fed to a micro-, nano- and/or ultrafiltration or a reverse osmosis, which is characterised in that PA1 c) the oil phase from stage a) is combined with the oil phase from stage b) and PA1 d) the oil phases thus combined are subjected with the aid of organic emulsion breakers to a second breaking.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.