Method for refining organic electroluminescent materials at high purity

Method for refining organic electroluminescent materials at high purity

  • CN 104,277,825 A
  • Filed: 07/08/2014
  • Published: 01/14/2015
  • Est. Priority Date: 07/09/2013
  • Status: Active Application
First Claim
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1. the method for purifying luminous organic material to 99.95% or higher purity, described method comprises step:

  • Utilize recrystallization from recrystallization solvent, prepurification luminous organic material to 98% or higher purity, and yield is 86% or higher, this luminous organic material reclaims after vacuum moulding machine organic luminous layer and obtains in manufacture organic light-emitting display device from vacuum sediment equipment;

    The organic materials of prepurification is separated with adsorbent adsorbs impurities;

    WithBy the organic materials that the purifying that distils is separated.

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