A method of making a diluted polysiloxane containing polymer comprising the steps of:-- i) Preparing a polysiloxane containing polymer by the polycondensation of siloxane containing monomers and/or oligomers which comprise condensable groups in the presence of an organopolysiloxane and/or an organic based diluent material, a suitable catalyst and optionally an end-blocking agent; and ii) Where required quenching the polymerisation process;wherein the diluent material is substantially retained within the resulting diluted organopolysiloxane.

 
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> Desulfurization of heavy hydrocarbons and conversion of resulting hydrosulfides utilizing a transition metal oxide

> Desulfurization of heavy hydrocarbons and conversion of resulting hydrosulfides utilizing copper metal

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