Solventless compositions of polysiloxanes with hydroxysilyl groups and reticulating agents with alkoxysilyl groups catalyzed by organic iron or zirconium compounds, their use in impregnating or coating compositions for asbest, cellulosic or synthetic materials

摘要

The invention relates to organopolysiloxane compositions, solvent-free, comprising a polydiorganopolysiloxane to hydroxysilyl group, a siloxane polyorganosi- branched, hydroxysilyl group, a crosslinking agent, to polyalkoxysilylé group, and a catalyst.; The compositions according to the invention are characterized in that the catalyst is an organic derivative of iron or zirconium soluble in the organopofysiloxanique medium.; The compositions are used for coating or impregnation, and allow to obtain materials endowed good non-stick properties as well as good water-repelling joints properties and good resistance to solvents.