Hydrophobically associating dispersants used in forming polymer dispersions
AssigneeNalco Chemical Company
InventorsManian Ramesh, Jeffrey R. Cramm, Darrell L. Werges, Christopher P. Howland
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AssigneeNalco Chemical Company
InventorsManian Ramesh, Jeffrey R. Cramm, Darrell L. Werges, Christopher P. Howland
Estimating the term…
An improved process for the preparing a dispersions of water soluble cationic polymers in an aqueous salt solution is disclosed. The improvement comprises using as a polymeric dispersion stabilizer a water soluble hydrophobically associating copolymer of diallyldimethylammonium chloride and a monomer selected from the group consisting of: ##STR1## and alkyl esters of acrylic acid, where R.sub.1 is either hydrogen or CH.sub.3 ; R.sub.2 and R.sub.3 are each an alkyl group having 1 to 3 carbon atoms; A.sub.1 is either an oxygen atom or NH; B.sub.1 is either an alkylene group having 2 to 4 carbon atoms or a hydroxypropylene group, Q is benzyl, or C.sub.6 -C.sub.20 alkyl, and X.sub.1.sup.- is an anionic counterion.
A process for polymerizing:
An improved process for preparing dispersions of cationic vinyl addition polymers in an aqueous salt solution using a polymeric stabilizer, the improvement comprising using as the polymeric stabilizer, a hydrophobically associating copolymer of diallyldimethylammonium chloride which is completely soluble in water and only very sparingly soluble in the aqueous salt solution.
Dependencies are inferred from the claim text.