Organopolysiloxane compositions with microbicidal activity that can be stored in the absence of water.

摘要

An organopolysiloxane composition having a microbiocidal action comprising an alpha , omega -dihydroxypolydiorganosiloxane and a benzimidazolyl-alkyl-carbamate of the formula wherein R1 is an alkyl radical with 1 to 4 carbon atoms, optionally substituted by the radical -OR3, R3 is an alkyl radical with 1 to 4 carbon atoms or the phenyl radical, and R2 is hydrogen, an alkyl radical with 1 to 4 carbon atoms, haolgen or nitro. Advantageously the carbamate is methylbenzimidazolylmethyl-carbamate, N-(fluorodichloromethylthio)-phthalimide, is present as a synergistic fungicide and the composition further comprises a silicon-containing crosslinking agent for the siloxane, a heavy metal salt or amino accellerant for crosslinking and an alpha , omega -bis-(trimethylsiloxy)-polydimethylsiloxane. Water per se or in atmospheric air cures the composition to a rubber elastic product resistant to microbes.