Storage-stable polysiloxane composition which gives permanently water-wettable vulcanizates

Abstract From the Canadian patent

The storage-stable polysiloxane mass contains components (A) that comprises a polysiloxane mass with aliphatic double bonds and a noble metal catalyst; and (B) that comprises a polysiloxane mass with Si-H groups and if necessary further aliphatic double bonds. In addition, component (A) contains a noble metal catalyst-free hydrophilic modifier composed of a (poly)siloxane backbone with alkylene ether units chemically bound to the (poly)siloxane backbone and (i) residues with aliphatic double bonds, and/or component (B) contains the same modifier with (ii) Si-H groups and/or residues with aliphatic double bonds. This storage-stable polysiloxane mass is useful as a dental mould-taking mass.