The manufacture method of polycarbonate resin

The manufacture method of polycarbonate resin

  • CN 103,459,465 B
  • Filed: 03/30/2012
  • Issued: 01/09/2018
  • Est. Priority Date: 03/30/2011
  • Status: Active Grant
First Claim
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1. a kind of manufacture method of polycarbonate resin, this method includes following processes:

  • Use dihydroxy compounds and carbonic acid twoEster in the presence of ester exchange catalyst, makes their polycondensations as starting compound by ester exchange reaction, wherein,The compound that the dihydroxy compounds at least represents containing following formula (2), also,The starting compound contains nitrogen-containing compound, the compound that the nitrogen-containing compound represents relative to following formula (2) withThe weight concentration for being converted into nitrogen-atoms is calculated as 0.3ppm less than 10ppm,The nitrogen-containing compound is alkanolamine,The starting compound includes sodium compound, the compound that the content of the sodium compound represents relative to following formula (2) withThe weight concentration meter for being converted into sodium atom is less than 2ppm,The ester exchange catalyst is the metallic compound of at least one of the metal selected from the race of long period type periodic table the 2nd,And it is 0.1 μ

    m of more than ol relative to the whole dihydroxy compounds 1mol used as raw material in terms of the total amount of its metallic atomAnd 30 μ

    m of below ol,This method also includes following processes:

    The compound that following formula (2) represents is previously heated to more than 50 DEG C, in molten conditionIt is lower to be kept for more than 0.5 hour and less than 200 hours, then mixed with carbonic diester, wherein, the chemical combination that the formula (2) is representedThing heats in the presence of nitrogen-containing compound, after turning into molten condition, without distillation purifying as polycarbonate resinStarting compound uses,

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