Equilibration of siloxanes
AssigneeGoldschmidt GmbH
InventorsGeorg Burkhart, Jurgen Dröse, Horst Dudzik, Klaus-Dieter Klein, Wilfried Knott, Volker Möhring
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Abstract
The invention relates to a process for the preparation of equilibration products of organosiloxanes by rearrangement of the siloxane bond to a cation exchange resin, the organopolysiloxanes thus obtainable and the use thereof.
Claims12
A process for the preparation of equilibration products of organosiloxanes by rearrangement of the siloxane bond, said process comprising reacting at least two organosiloxanes in the presence of a macrocrosslinked polystyrene based cation exchange resin containing sulfonic acid groups at temperature of about 10° C. to about 120° C., optionally in the presence of a solvent, and isolating the equilibrated organosiloxanes, wherein the said macrocrosslinked cation exchange resin has an A value of about 40 m2/g wherein A is the specific surface area of said macrocrosslinked exchange resin;
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- wherein the mean pore diameter of the macrocrosslinked cation exchange resin is about 65 nm.
Dependencies are inferred from the claim text.