Be used as the salt of the dehydroacetic acid of pyrithione stabilizing agent in the plastic

Be used as the salt of the dehydroacetic acid of pyrithione stabilizing agent in the plastic

  • CN 102,365,019 B
  • Filed: 03/26/2010
  • Issued: 11/25/2015
  • Est. Priority Date: 03/26/2009
  • Status: Active Grant
First Claim
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1. suppress to include 500ppm to 5 by weight, the method of the variable color of the material of the pyrithione of 000ppm or its salt, described method comprises the discoloration inhibitor including the zinc salt of dehydroacetic acid being added with effective amount to described material, described discoloration inhibitor is enough to provide 500ppm to 40 by weight, the amount of the zinc salt of the dehydroacetic acid of 000ppm concentration is added, wherein said material is plastic material, and described plastic material is the combination being selected from polyamide, polyacetals, Merlon, polysulfones and vinyl polymer and any two kinds, three kinds or four kinds polymer thereof;

  • Wherein said plastic material to be extruded and the zinc salt of described dehydroacetic acid and described plastic material are extruded jointly at 120 DEG C to 240 DEG C, and the outside weathering condition of wherein said material.

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