| 摘要 |
Novel linear or branched O2-curable polyorganosiloxanes containing propanaldehyde functional groups and at least three recurring siloxyl units per molecule, at least one unit of which corresponds to the general formula: <IMAGE> (1) in which X is the radical -CH2-CH2CHO or the radical <IMAGE> and R is a monovalent hydrocarbon residue containing from 1 to 12 carbon atoms, are prepared by hydroformylation of the corresponding polyorganosiloxane in an organic phase by means of a catalyst system which is soluble in the organic phase but insoluble in aqueous phase, such catalyst system including a rhodium/sulfonated or carboxylated triarylphospine salt complex.
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