Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
July 17, 2012
Patent Application Number
12969783
Date Filed
December 16, 2010
Patent Citations Received
Patent Primary Examiner
Patent abstract
The present invention is directed to a method for preparing a cellulose reactive adduct of polyvinylamide and a composition resulting from the method. The preparation of the cellulose reactive adduct is carried out close to a Critical Concentration defined herein. When the reaction is run close to this Critical Concentration, the risk of gelation is minimized, consumed glyoxal is maximized, and shelf live is enhanced. Additionally, the glyoxalated vinylamides of the present invention impart improved wet and dry strengthening efficiency to paper and paperboard when compared to adducts disclosed in previously described art.
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