Process for producing organosiloxanes
AssigneeDow Corning Corporation
InventorStephen Westall
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Abstract
Process for the production of condensation products or organosilicon compounds having at least one silicon-bonded hydroxyl group. The process comprises contacting the organosilicon compound with a quaternary ammonium borate, -phosphate, -carbonate or -silicate. May be employed for example for the polymerisation of .alpha., w silanol-terminated polydiorganosiloxanes and for the production of organosiloxanes having organofunctional e.g. aminoalkyl groups.
Claims7
A process for the production of an organosilicon condensation product which comprises contacting (A) at least one organosilicon compound having in the molecule at least one silanol group, and silicon-bonded organic substituents wherein the silicon-bonded organic substituents are selected from monovalent hydrocarbon groups having from 1 to 14 carbon atoms or monovalent substituted hydrocarbon groups having from 1 to 10 carbon atoms in which the substituents of the monovalent substituted hydrocarbon groups are selected from amino, halogen, mercapto, hydroxyl, amido or ester, with (B) a quaternary ammonium compound selected from quaternary ammonium phosphates, quaternary ammonium borates, quaternary ammonium carbonates or quaternary ammonium silicates.
A process as claimed in claim 2 wherein organosilicon compound (A) is a polydiorganosiloxane having a hydroxyl group attached to each terminal silicon atom.
Dependencies are inferred from the claim text.