Method for preparing polycarboxylate superplasticizer by nonaqueous technique

Method for preparing polycarboxylate superplasticizer by nonaqueous technique

  • CN 105,017,490 A
  • Filed: 07/14/2015
  • Published: 11/04/2015
  • Est. Priority Date: 07/14/2015
  • Status: Active Application
First Claim
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1. anhydrous legal system is for a method for polycarboxylate water-reducer, it is characterized in that, comprises following synthesis step:

  • (1), at 70 DEG C ~ 85 DEG C, 100 mole of monomer A are melted in reactor;

    (2) in the reactor of step (1), slowly add 1.5 ~ 6 mole of monomer B and 1.15 ~ 2.6 mole initiator C again form mixing liquid;

    (3), by 9 ~ 28.5 mole of monomer B and 2.3 ~ 10.4 moles of chain-transfer agent T be mixed to form mixed solution, then this mixed solution instilled in 2 ~ 4h in the reactor in step (2);

    (4), continue stirring reaction 0h ~ 1h after, namely obtain polycarboxylate water-reducer after discharging cooling.

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