Patent ID: 6506279
Filing Date: 2003-01-14
Classification: C08G,C08K,C08L,C09K

Abstract:
Kit for the production of rapidly-hardening, acetoxysilane cross-linking silicone masses of at least bifunctionally-terminated diorganopolysiloxanes, and acetoxysilane cross-linkers, which contain the following components:A) 100 wt. parts of an at least bifunctionally terminated diorganopolysiloxane, whereby said bifunctionally terminated diorganopolysiloxane is built up from linear or branched chain of repeating units of the formula â€ƒand contains at least two end groups Z â€ƒwith Z: â€”H, â€”OH, â€”OR1 and SiR3(OCOR4)2 R1, R2: saturated or unsaturated hydrocarbon radicals with 1 to 15 carbon atoms, R3: hydrogen or monovalent saturated or unsaturated hydrocarbon or hydrocarbonoxy radicals with 1-15 carbon atoms. R4: hydrogen and/or saturated or unsaturated aliphatic, cycloaliphatic or aromatic hydrocarbon radical with 1-15 carbon atoms, B) 0.2 to 20 wt. parts of an acetoxysilane cross-linker of the general formula R3yâ€”Siâ€”(OCOR4)4âˆ’y whereby y=0 or 1 and R3, R4 have the above meaning, C) 0.1 to 20 wt. parts of an accelerator D) 0 to 20 wt. parts of water, characterised in that the accelerator in component C is a neutral salt of iron or aluminum with a mineral acid.