Fluoroionomers dispersions having low surface tension, low liquid viscosity and high solid content

Fluoroionomers dispersions having low surface tension, low liquid viscosity and high solid content

  • CN 102,459,361 A
  • Filed: 06/10/2010
  • Published: 05/16/2012
  • Est. Priority Date: 06/12/2009
  • Status: Active Application
First Claim
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1. be used for making the method for (entirely) fluoro ionomer liquid compsn, said composition has with respect to the gross weight of said composition (entirely) fluoro ionomer content of 9%wt at least, and said method comprises:

  • -(entirely) fluoro ionomer (I) is provided;

    -make said (entirely) fluoro ionomer (I) stand at least one item in the and the following;

    The fluorization of (A) carrying out with element fluorine;

    (B) processing of using polar organic solvent [solvent (S)] to carry out;

    And said (entirely) fluoro ionomer (I) is separated to reclaim (entirely) fluoro ionomer (I) of purifying;

    -said (entirely) fluoro ionomer (I) is dispersed under at least 150 ℃

    temperature in the aqueous medium that is substantially free of organic solvent, to obtain waterborne compositions;

    -adding at least a polar organic solvent [solvent (S '"'"')] in said compsn.

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