Modern Finishing Agents for Water-Repellent and Oil-Repellent Finish

Abstract

Water as well as oil-repellent effects on a PES/CO woven fabric finished by means of different oil-repellent agents were investigated. It was found out that the best effects are achieved by using an emulsion prepared on the basis of perfluorinated fluorocarbon resins with addition of a small quantity of polyfunctional isocyanate as a cross-linking agent. Besides high water and oil-repellency, high wash and dry-cleaning fastness is obtained. Without a cross-linking agent good effects can be achieved, but with a lower fastness. By using a classical finishing agent of an emulsion of fluorocarbon polymerisat with addition of an extender on the basis of modified melamine derivatives and paraffins, as well as creaseproofing agents, high water and oil-repellency values are obtained, but with a lower fastness similar as by means of a modem finishing agent, but without addition of isocyanate. The advantage of finishing with addition of isocyanate is that the finished fabric does not contain formaldehyde, and high recovery angles are achieved simultaneously.