| abstract |
PLATINUM COMPLEXES OF UNSATURATED SILOXANES ARE PROVIDED WHICH ARE USEFUL AS HYDRODILATION CATALYSTS. THESE PLATINUM-SILOXANE COMPLEXES CAN CONTAIN AN AVERAGE OF UP TO ABOUT ONE HALOGEN ATOM, PER GRAM ATOM OF PLATINUM, WHICH INCLUDE PLATINUM-SILOXANE COMPLEXES WHICH ARE SUBSTRANTIALLY FREE OF INORGANIC HALOGEN. THESE PLATINUM-SILOXANE COMPLEXES CAN BE MADE BY EFFECTING CONTACT BETWEEN A PLATINUM HALIDE AND AN UNSATURATED SILOXANE, FOR EXAMPLE 1,3-DIVINYLTETRAMETHYLDISILOXANE, AND REMOVING AVAILABLE INORGANIC HALOGEN FROM THE RESULTING MATERIAL. IN ADDITION, CURABLE ORGANOPOLYSILOXANE COMPOSITIONS ARE PROVIDED COMPRISING AN ORGANO-POLYSILOXANE POLYMER AND AN EFFECTIVE AMOUNT OF SUCH PLATINUM-SILOXANE COMPLEX. |