| abstract |
The invention relates to a mixture of polyalkylsiloxanes obtainable by hydrosilation reaction, wherein the mixture of monounsaturated olefins is reacted with a certain amount of polyalkylhydrogensiloxane in the presence of a hydrosilation catalyst . Furthermore, the present invention relates to a polyalkylsiloxane comprising an alkyl side composed of a straight-chain or branched alkyl group having 40 to 60 carbon atoms, 16 to 30 carbon atoms, and 6 to 15 carbon atoms chain. In addition, the present invention relates to a water-based composition, which is suitable for a metal casting process as a release agent, and includes a mixture of polyalkylsiloxanes, a nonionic surfactant having an HLB value of at least 8, and less than 20 % By weight of waxes. Furthermore, the invention relates to the use of polyalkylsiloxanes and mixtures of polyalkylsiloxanes. |