Be used to prepare the method for flameproofed thermoplastic moulding compounds

Be used to prepare the method for flameproofed thermoplastic moulding compounds

  • CN 101,808,798 A
  • Filed: 09/23/2008
  • Published: 08/18/2010
  • Est. Priority Date: 09/28/2007
  • Status: Active Application
First Claim
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1. method for preparing the thermoplastic molding materials that comprises following component:

  • A) at least a thermoplastic polymer of 39-99 weight %,B) flame retardant compositions of 1-60 weight %, it comprisesB1) expansible graphite, andC) other additives of 0-60 weight %,Each percentage by weight is all based on component A)-C) gross weight meter, and summation is 100 weight %,Described method is by mixing described component A in screw extruder), B) and if---existences---melt realization C), described screw extruder comprises at least one metering zone, a plasticising district, a homogenize district and a discharge area in order along direction of propulsionWherein to entering the expansible graphite B1 of described screw extruder) metering finish in such position, see after this position from direction of propulsion that promptly described extruder does not comprise the shearing parts basically.

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