Use of hydroxyl-functional polyalkylorganosiloxanes as solvents for cationic photoinitiators for use in radiation- curable silicones
View Patent ↗The invention provides for the use of hydroxyl-functional polyalkylorganosiloxanes of the general formula (IV) as solvents for cationic photoinitiators and for the use of these solutions in cationically curable silicones.
1. A mixture comprising:
A) at least one hydroxyl-functional polyalkylorganosiloxanes selected from the group consisting of:
B) at least one cationic photoinitiator.
2. The mixture as claimed in claim 1 , wherein the cationic photoinitiator is a diaryliodonium salt.
3. The mixture as claimed in claim 2 , wherein the diaryliodonium salts is a compound selected from the group consisting of
4. The mixture as claimed in claim 1 , wherein the cationic photoinitiator is a triarylsulfonium salt.
5. A cationically curable composition which comprises at least one organopolysiloxanes, which contains at least one UV reactive group and that cures cationically under UV radiation, and the mixture according to claim 1 .
6. An adhesive coating which is obtained by reacting the cationically curable composition according to claim 1 with UV light.
7. A method for increasing the storage shelf life of a solution comprising of at least one cationic photoinitiator which comprises dissolving the cationic photoinitiator in a solvent comprising at least one hydroxyl-functional polyalkylorganosiloxanes selected from the group consisting of:
as a solvent for cationic photoinitiators whereby the solution is stable for at least six months.