Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Werner Fischer0
Norbert Steiner0
Gregor Herth0
Horst Redlof0
Date of Patent
May 20, 2008
Patent Application Number
10518595
Date Filed
July 30, 2003
Patent Primary Examiner
Patent abstract
The invention relates to cationic water-soluble polyelectrolytes, especially terpolymers, which are obtained by polymerising monomers of (meth)acrylamide, a quaternised (meth)acrylamide derivative, a (meth)acrylic acid derivative and/or hydrolysis-stable cationic monomers. The composition of the polyelectrolytes is characterised by a toxicity index formula Fi=(QTP−2QME)/10≦1 wherein QTP represents the total cationic charge of the polymer and QME represents the charge part of the ester type monomer. The invention also relates to the production and use of said polyelectrolytes and water-in-water polymer dispersions which contain said polyelectrolytes.
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