POLYFUNCTIONAL PERHALOGENATED POLYORGANOSILOXANES AND THE PROCESSES FOR THEIR PREPARATION

摘要

The present invention relates to chemically stable, polyfunctional,perfluorinated polyorganosiloxanes (POS) comprising on the one handfluorinated lateral grafts resulting from the hydrosilylation of perfluorinatedolefins with SiH units and having alkyl and/or alkyl ester linkages but not etherlinkages, and on the other hand other, non-perfluorinated functional units Ecapable of giving them diverse and varied physical and chemical properties andopening up avenues in numerous applications. Examples of these POS according to the invention are those of thefollowing formula: [err] According to another of its features, the invention relates to aprocess for the preparation of these polyfunctional perfluorinated POS.Applications: antifoams, agents for lowering surface tension, dirt repellents,antiadhesives, lubricants, oleophobic and/or hydrophobic agents, coatings etc.