Expandable polystyrene resin beads, process for production thereof and expanded moldings

Expandable polystyrene resin beads, process for production thereof and expanded moldings

  • CN 101,925,646 A
  • Filed: 01/23/2009
  • Published: 12/22/2010
  • Est. Priority Date: 01/30/2008
  • Status: Active Application
First Claim
Patent Images

1. expandable polystyrene resin beads, it is the polystyrene resin that contains whipping agent to be made the particle shape and the expandable polystyrene resin beads that forms, wherein,The weight-average molecular weight Mw of polystyrene resin is 120,000~

  • 270,000 scope,Whipping agent to be being that the ratio of 3~

    8 mass parts contains pentane as must composition with respect to 100 mass parts polystyrene resins, and, by quality ratio, above-mentioned pentane consist of iso-pentane;

    the scope of Skellysolve A=10;

    90~

    80;

    20.

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