Patent ID: 8343469

Claim:
A cationic polyelectrolyte formulation including: 1) a solid cationic synthetic water soluble polyelectrolyte comprising a polymer formed from (meth)acrylamide and one or more of i) a cationic (meth)acrylamide monomer, and ii) a cationic (meth)acrylic acid monomer, and iii) hydrolysis stable cationic monomers wherein said polyelectrolyte has a molecular weight less than 2 million and a charge density of 0.001 meg/g to 2.5 meq/g and a level of unreacted acrylamide monomer less than 50 ppm; 2) a surfactant; 3) a solvent, and; 4) wherein said cationic synthetic water soluble polyelectrolyte is formed by adiabatic gel polymerization and is subsequently milled to a particle size of 50 to 60 μm to provide said level of unreacted acrylamide of less than 50 ppm.