Organic compounds -- part of the class 532-570 series – Organic compounds – Silicon containing
Patent
1989-09-05
1991-06-04
Shaver, Paul F.
Organic compounds -- part of the class 532-570 series
Organic compounds
Silicon containing
528 14, 528 32, C07F 708, C08G 7706, C08G 7720
Patent
active
050216015
ABSTRACT:
Novel linear or branched O.sub.2 -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: ##EQU1## in which X is the radical --CH.sub.2 --CH.sub.2 CHO or the radical ##STR1## 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.
REFERENCES:
patent: 2588083 (1952-03-01), Burkhard et al.
patent: 2803637 (1957-08-01), Speier
patent: 4424392 (1984-01-01), Petty
Frances Jean-Marc
Metz Francois
Rhone-Poulenc Chimie
Shaver Paul F.
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