A. Hebach, A. Oberhof, N. Dahmen, M. Beeh
May 8, 2013
This paper reappraises the dry cleaning process using compressed Carbon Dioxide as washing fluid, specifically in view to cleaning enhancement options. At first, the cleaning cycle of the process is presented. Thereafter, suitable surfactant classes are discussed against the background of prolific as well as an environmentally benign process. Among the most promising structures are the alcohol ethoxylates. Their physical properties such as solubility, phase behaviour, and interfacial activity were intensely studied. The performance of test-formulations in cleaning tests is promising and already suitable for outer garment cleaning. A new way of enhanced mechanical action was already demonstrated in a lab-scale apparatus.