| 摘要 |
<p>Process for preparing a catalyst for hydrosilylation reactions which comprises reacting (A) a rhodium complex Rh(R2S)3X3, in which R represents alkyl and other specified hydrocarbon groups and X represents Cl or Br with (B) an organohydrogen polysiloxane in the presence of (C) an organosiloxane having silicon-bonded vinyl or allyl groups. The ratio of silicon-bonded hydrogen atoms provided by (B) to each Rh atom provided by (B) is in the range from 0.5:1 to 6.0:1. The invention also includes the use of the catalyst for reacting IDENTICAL SiH with IDENTICAL Si Alkenyl especially in compositions for the treatment of substrates such as paper and plastics.</p> |
