Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 24, 2009
Patent Application Number
11880544
Date Filed
July 23, 2007
Patent Primary Examiner
Patent abstract
A papermaking method and a composition which utilize, as a drainage aid, a water-soluble anionic copolymer prepared via a water-in-oil polymerization technique that, absent a cross-linking agent, is characterized by a Huggins' constant (k′) determined in 0.01M NaCl greater than 0.75 and a storage modulus (G′) for a 1.5 wt. % actives polymer solution at 4.6 Hz greater than 175 Pa.
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