Titanium-based compounds and their applications
AssigneeDow Silicones Corporation
InventorFrederic GUBBELS
Life of this patent
Estimating the term…
Abstract
A process for the preparation of a titanium-based reaction product is provided. The titanium-based reaction product comprises the reaction product of an alkoxy titanium compound and a silanol terminated polydiorganosiloxane. The polydiorganosiloxane typically has at least two silanol groups per molecule. The titanium-based reaction product is also described, as is its use as a catalyst, having improved stability in the presence of water, for condensation curable silicone compositions. The titanium-based reaction product may additionally at least partially replace the need for a separate polymer to be used in the condensation curable silicone compositions.
Claims15
A method for the preparation of a titanium-based reaction product said method comprising the steps of:
- (i) mixing a first ingredient, an alkoxy titanium compound having from 2 to 4 alkoxy groups with a second ingredient, a linear or branched polydiorganosiloxane having at least two terminal silanol groups per molecule and a viscosity of from 30 to 300000 mPa·s at 25° C.;
- (ii) enabling the first and second ingredients to react together by stirring under vacuum to form a reaction product;
- and
- (iii) collecting the reaction product of step (ii).
Dependencies are inferred from the claim text.