Patent ID: 6395855
Filing Date: 2002-05-28
Classification: C08G,C08K,C08L,C09K

Abstract:
Constructional kit for the production of rapidly hardening, silicone masses of at least bifunctiorially terminated diorganopolysiloxanes, cross-linkers, as well as optional filling materials, additives and pigments, comprising the following components:A) 100 wt. parts of an at least bifunctionally terminated diorganopolysiloxane, whereby this polysiloxane is built up from a linear or branched chain of repeating units of the formula and contains at least two end groups Z with Z is one or more of: â€”H, â€”OH, â€”OR1, â€”OSiR3 (NR4R5)2 â€”Oâ€”Siâ€”(ON&boxH;CR4R5)3 or â€”Oâ€”Siâ€”(OR3)3 R1, R2: saturated or unsaturated hydrocarbon radicals with 1 to 15 carbon atoms optionally substituted with halogen or cyano groups, B) 0.1 to 20 wt. parts of a cross-linker, C) 0.1 to 20 wt. parts of an accelerator, D) 0 to 20 wt. parts water, characterised in that the accelerator in component C is an acidic or basic neutral salt and the component B an aminosilane cross-linker of the general formula: R3yâ€”Siâ€”(NR4R5)4âˆ’y â€ƒwhereby y=0 or 1, with R3: hydrogen or monovalent saturated or unsaturated hydrocarbon or hydrocarbonoxy radical and R4, R5 are independently one or more of: hydrogen or saturated or unsaturated aliphatic, cycloaliphatic or aromatic hydrocarbon radical with 1 to 15 carbon atoms, optionally substituted with halogen or cyano groups; or an oxime or alkoxy cross-linker of the general formula: R3yâ€”Siâ€”(ONCR4R5)4âˆ’y or R3yâ€”Siâ€”(OR3)4âˆ’y â€ƒwhereby y=0 or 1 and R3, R4 and R5 have the above meaning.