Novel water soluble terpolymers of acrylamide, an alkali metal or ammonium salt of acrylic acid and an oil soluble or hydrophobic alkyl acrylamide monomer have been found to provide efficient viscosification of water or brine solutions. The polymers are prepared by a free radical micellar polymerization...http://www.google.es/patents/US4694046?utm_source=gb-gplus-sharePatente US4694046 - Hydrophobically associating terpolymers of acrylamide, salts of acrylic acid and alkyl acrylamide
Hydrophobically associating terpolymers of acrylamide, salts of acrylic acid ...
