Transparent and high-heat polycarbonate-polysiloxane copolymers and transparent blends with polycarbonate and a process for preparing same

Transparent and high-heat polycarbonate-polysiloxane copolymers and transparent blends with polycarbonate and a process for preparing same

  • CN 102,161,753 B
  • Filed: 02/23/2004
  • Issued: 07/15/2015
  • Est. Priority Date: 02/21/2003
  • Status: Active Grant
First Claim
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1. polycarbonate-polysiloxane copolymer, containing the monomeric unit derived from the polydiorganosiloxane of hydroxyaryl end-blocking and the monomeric unit of aromatic bischloroformate that formed derived from the pH 3 to 8, described polydiorganosiloxane has 10 to 60 two organo-siloxane base unit, the mean chain length of described aromatic bischloroformate is 6 or longer, and the turbidity value of wherein said polycarbonate-polysiloxane copolymer is lower than 10;

  • Wherein said polycarbonate-polysiloxane copolymer uses the polydiorganosiloxane preparation with (2-methoxyl group-4-chavicol) end-blocking of having structure of dihydroxyphenyl propane and 1 to 10%,

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