Hollow granular thiophenylamine substance and preparation thereof

Hollow granular thiophenylamine substance and preparation thereof

  • CN 101,234,315 B
  • Filed: 03/10/2008
  • Issued: 01/09/2013
  • Est. Priority Date: 03/10/2008
  • Status: Active Grant
First Claim
Patent Images

1. phenthazine particle, its granularity is 0.5-3.0mm, it is characterized in that it is the hollow spherical particle, and namely the center of this phenthazine particle has either large or small cavity, and this cavity and phenthazine particle surface are and are smoothly connected.

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