| 摘要 |
A method of making a polysiloxane containing polymer is described. The method comprises the steps of: i) Preparing a polysiloxane containing polymer by the polycondensation of siloxane containing monomers and/or oligomers which comprise at least 2 condensable groups per molecule, in the presence of (a) one or more condensation catalysts and optionally one or both of (b) a diluent (a plasticiser and/or extender) and/or an end-blocking agent; and ii) Where required quenching the polymerisation process. The diluent, when present, is substantially retained within the resulting diluted polysiloxane containing polymer and the process takes place at a pressure of at least 75×105 Pa (0.75 MPa). |
