Patent ID: 6777031
Filing Date: 2004-08-17
Classification: C08G,C08K,C08L,Y10T

Abstract:
A process for coating substrate surfaces and for producing shaped composites, in which the substrate surfaces are coated with an addition-crosslinking silicone rubber mixture or the substrates are placed together and the addition-crosslinking silicone rubber mixture is introduced into intermediate spaces and subsequently cured at elevated temperature, wherein(i) prior to coating, the substrate surfaces are treated with a surface-active composition having a corrosive action, and (ii) subsequently, the dry substrate surfaces are coated with a silicone rubber mixture in liquid or paste-like form that comprises at least the following constituents: (a) a cyclic, linear or branched organopolysioxane which contains on average at least two alkenyl groups per molecule and has a viscosity of from 0.01 to 30,000 Pas; (b) a cyclic, linear or branched organohydrogenpolysioxane which contains dialkylsilyloxy groups and a SiH group; and (c) a catalytically effective amount of cis-dichlorobis(styrene)platinum(II), which has been dissolved in a suitable organic solvent, where a molar ratio of SiH groups present in the addition-crosslinking silicone rubber mixture to Si-bonded alkenyl groups present in the addition-crosslinking silicone rubber mixture is at least 1.5.