Patent ID: 8076411

Claim:
A method of making a linear diluted polysiloxane containing polymer comprising the steps of: i) preparing a linear polysiloxane containing polymer by the polycondensation of siloxane containing oligomers which comprise condensable groups in the presence of an organic based extender or plasticiser, a suitable catalyst and an end-blocking agent; and ii) where required quenching the polymerisation process; wherein the organic based extender or plasticiser is substantially retained within the resulting linear diluted organopolysiloxane; and wherein the organic based extender or plasticiser is selected from one or more of the group comprising linear or branched mono unsaturated hydrocarbons; and mineral oil fractions comprising linear (n-paraffinic) mineral oils, branched (iso-paraffinic) mineral oils, cyclic (naphthenic) mineral oils, and mixtures thereof.