The method for preparing superabsorbents

The method for preparing superabsorbents

  • CN 101,959,538 A
  • Filed: 03/03/2009
  • Published: 01/26/2011
  • Est. Priority Date: 03/05/2008
  • Status: Active Application
First Claim
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1. one kind by carrying out the method that polymerization prepares superabsorbents at least in being equipped with the kneading machine of two parallel axes, described kneading machine also contains the element that the inclusions of this kneading machine is sent to discharging area by feed zone with the direction that is parallel to axle at least one, described method comprises adds to a kind of inorganic powder in the inclusions of kneading machine before polymerization or in the polymerization process, and at least a other additives are added in polymerization process in the inclusions of kneading machine, the interpolation of wherein said inorganic powder is not later than half of mean residence time of kneading machine inclusions, and the interpolation of described other additives is no earlier than this time of staying half.

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