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Optical analysis for heterogeneous medium

  • US 20050106744A1
  • Filed: 12/26/2002
  • Published: 05/19/2005
  • Est. Priority Date: 12/26/2001
  • Status: Abandoned Application
First Claim
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1. A polyketone comprising repeating units, 95-100 mole % of which are 1-oxotrimethylene represented by formula (1) and having an intrinsic viscosity of 2.5-20 dl/g, wherein the content of Pd element is 0-20 ppm, terminal structures include an alkyl ester group (terminal group A) represented by the formula (2) and an alkyl ketone group (terminal group B) represented by formula (3), and the equivalent ratio of terminal group A/terminal group B is 0.1-8.0:

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