New modified silicone oil for low temperature cure die casting lubricants

The present invention relates to a mixture of polyalkylsiloxanes that cure at comparably low temperatures of about 170 DEG C while being unreactive under ambient conditions during storage or transport and which are obtainable through a hydrosilylation reaction wherein a mixture of ethylenically unsaturated olefins consisting of 1-100% of one or more polyene(s) having one terminal double bond which is either monosubstituted or geminal disubstituted and one or more tri- or tetrasubstituted double bond(s), wherein said terminal double bond and said one or more tri- or tetrasubstituted double bond(s) are preferably non-conjugated, and 0-99 mol% of monounsaturated olefins with 6 to 15 carbon atoms is reacted with an amount of one or more polyalkylhydrosiloxanes in the presence of a hydrosilylation catalyst. Furthermore, the present invention relates to water-based compositions suitable for use in metal casting processes as a mold release agent comprising a mixture of polyalkylsiloxanes of the invention and a non-i