Microbicidal organopolysiloxane molding compositions

Details Microbicidal organopolysiloxane molding compositions Microbicidal organopolysiloxane molding compositions

C - Chemistry, Metallurgy

08

K

400/5102, 400/72

C08K 5/34 (2006.01) C08K 5/3447 (2006.01) C08L 83/04 (2006.01)

Patent

CA 1129134

Bayer 3423-LH:rg MICROBICIDAL ORGANOPOLYSILOXANE MOLDING COMPOSITIONS Abstract of the Disclosure An organopolysiloxane composition having a microbicidal action comprising an .alpha.,.omega.-dihydroxypolydiorganosiloxane and a benzimidazolyl-alkyl-carbamate of the formula Image 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, halogen 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. Le A 18 353

309513

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