Preparation of hydrophilic polymers of high mass by controlled radical polymerization

Preparation of hydrophilic polymers of high mass by controlled radical polymerization

  • CN 103,596,987 A
  • Filed: 09/27/2011
  • Published: 02/19/2014
  • Est. Priority Date: 09/30/2010
  • Status: Active Application
First Claim
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1. the method for preparing polymkeric substance, comprises at least one gel polymerisation step (E), wherein makes following substances contact:

  • -identical or different unsaturated the water-soluble monomer of olefinic;

    -be suitable for the radical source of the polymerization of described monomer, typically redox system;

    AndThe control agent of-radical polymerization, preferably comprise thiocarbonyl sulfo-group-S (C=S)-, wherein the monomer concentration in the reaction medium of step (E) is enough high, if so that be aggregated in the gelation that is enough to cause medium without carry out under control agent in the situation that.

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