Core-shell structure copolymer flow ability modifying agent

Core-shell structure copolymer flow ability modifying agent

  • CN 101,945,967 B
  • Filed: 10/28/2008
  • Issued: 04/27/2016
  • Est. Priority Date: 02/14/2008
  • Status: Active Grant
First Claim
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1. a flow ability modifying agent, comprise:

  • there are polymer core and at least part of solids around the polymer shell of described core, wherein said core comprises frictional reducing polymer, and wherein said shell comprises the shell multipolymer with hydrophobic compound repeating unit and the first amphipathic compound repeating unit;

    AndWherein said core and described shell are formed by letex polymerization, and the described core wherein formed by letex polymerization and described shell are less than 10 microns;

    Wherein said polymer shell comprises the monomer of the amount of 25 to 98wt.%.

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