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Method of preparing silicon compositions

  • US 4,987,169 A
  • Filed: 04/21/1989
  • Issued: 01/22/1991
  • Est. Priority Date: 04/22/1988
  • Status: Expired due to Term
First Claim
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1. A method of preparing a uniform silicone composition, comprising treating under the application of a shearing force a polymeric product obtained by addition polymerization of (A) on organohydrogenpolysiloxane containing in its molecule from 1.5 to 5 silicon-bonded hydrogen atoms on average, said silicon-bonded hydrogen atoms being in an amount of from 1 to 20 mol %, based on the total of the silicon-bonded hydrogen atoms and silicon-bonded organic groups in the molecule;

  • and (B) an organopolysiloxane containing in its molecule from 1.5 to 5 silicon-bonded aliphatic unsaturated groups on average;

    in the presence of from 10 to 1,000 parts by weight of low-viscosity silicone oil having a viscosity of not more than 100 cSt at 25°

    C. based on 100 parts by weight of the total amount of said (A) and (B).

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