Patent ID: 8022162

Claim:
A method of making a diluted organopolysiloxane polymer comprising hydroxyl and/or hydrolysable groups, said method comprising the steps of: (i) preparing an organopolysiloxane polymer by polymerising cyclic organopolysiloxane monomer(s) in the presence of an organic diluent material, a suitable catalyst and an end-blocking agent; and (ii) where required, quenching the polymerisation process; wherein the diluent material is substantially retained within the resulting diluted organopolysiloxane and is selected from one or more of the group consisting of 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.