Esters containing bonded fluorocarbon and oxypropylenealkylether groups, emulsions containing these esters and their use for the preparation of cellular plastics by polyisocyanatepolyaddition

Abstract From the Canadian patent

Novel esters containing bonded fluorocarbon and oxypropylenealkylether groups and of the formula, or, where Rf is straight-chain or branched partially fluorinated, or perfluorinated alkyl of 2 to 10 carbon atoms partially fluorinated or perfluorinated cycloalkyl of 4 to 8 carbon atoms, perfluorophenyl or, perfluoroalkylphenyl where the perfluoroalkyl radical is of 1 to 6 carbon atoms, R is straight-chain or branched alkyl of 1 to 4 carbon atoms and, n is an integer from 2 to 70 blowing agent-containing emulsions which have a long shelf life and contain at least one partially fluorinated or perfluorinated (cyclo)aliphatic hydrocarbon of 3 to 8 carbon atoms and/or sulfur hexafluoride at least …