Vinyl polymer powder, thermoplastic resin composition, and molded article thereof

Vinyl polymer powder, thermoplastic resin composition, and molded article thereof

  • CN 106,103,549 B
  • Filed: 03/20/2015
  • Issued: 09/21/2021
  • Est. Priority Date: 03/20/2014
  • Status: Active Grant
First Claim
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1. A vinyl polymer powder comprising a vinyl polymer having a glass transition temperature of 0 ℃

  • or higher, wherein the glass transition temperature of all of the vinyl polymer is 0 ℃

    or higher when the vinyl polymer has a plurality of glass transition points, and wherein the total content of magnesium ions, calcium ions, aluminum ions, barium ions and zinc ions is 350ppm or less based on the total mass of the vinyl polymer powder, the content of ammonium ions is 100ppm or less based on the total mass of the vinyl polymer powder, the acid value is 2.5mgKOH/g or less, and the bulk density is 0.10 to 0.60g/cm3The vinyl polymer contains a (meth) acrylate ester unit having an alkyl group or an aromatic group having 1 to 4 carbon atoms at an ester portion, and contains an aromatic vinyl monomer unit in an amount of 0.5 to 99.5% by mass based on the total mass of monomer units constituting the vinyl polymer,the content of the component with the particle diameter of less than 38 μ

    m contained in the vinyl polymer powder is 0-15 mass%.

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