| abstract |
In the new radiation-curable compositions based on (a) organopolysiloxane with triorganosiloxane units of the formula H2C = CHCXOR¹SiR2O1 / 2, in which R is the same or different monovalent hydrocarbon radicals which can be halogenated, R¹ same or different divalent hydrocarbon radicals which are halogenated and X represents oxygen or sulfur, while the siloxane units other than these triorganosiloxane units are at least 80% of their number of diorganosiloxane units, the SiC-bonded organic radicals of which are both monovalent hydrocarbon radicals which can be halogenated, (b) filler with a specific surface area of at least 50 m² / g and optionally (c) photoinitiator, contains organopolysiloxane (a) in addition to the siloxane units mentioned above, also siloxane units of the formula HSR¹SiRO, where R and R¹ each have the meaning given above. |