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High molecular weight associative amphoteric polymers and uses thereof

  • US 7,700,702 B2
  • Filed: 03/29/2005
  • Issued: 04/20/2010
  • Est. Priority Date: 04/07/2004
  • Status: Active Grant
First Claim
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1. An associative amphoteric polymer having a weight average molecular weight (Mw) greater than 50,000 g/mol consisting of:

  • (a) between 0.005 and 10 mole % of at least one acrylamide-derived cationic monomer containing a hydrophobic chain and with the general formula;

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