Main > POLYMERS > Living (Controlled) Polymerization > Radical Polymerization > Block CoPolymers > Xanthate based Technology > TriBlock CoPolymers. > 2 Ionic Blocks. 1 NonIonic Block. > Patent. > Claims > Claim 1: Aqueous Compn. Comprise: > Block CoPolymer (A) Comprise: > 2 Anionic (or Cationic) Blocks & > 1 NonIonic Block & Compd. (B) > Select: Ions with > 2 Charges Etc. > (B): Cationic if (A): Anionic Block > (B): Anionic if (A): Cationic Block > Amount of (A): such that Viscosity > of Compn. > 3 Times Viscosity of > (A) or (B) Alone. Claim 3: Gel. > Claim 4: (A) is Linear CoPolymer; > Comb or Star CoPolymer; or > Dendritic or HyperBranched CoPol. > Claim 5: (A): 2 Anionic Blocks. > Claims 6,7: Anionic Unit Select: > (Meth)Acrylic Acid or Salts Etc. > Claim 8: (A): 2 Cationic Blocks. > Claim 9: Cationic Monomer Select: > AminoAlkyl (Meth)Acrylates Etc. > Claim 10: NonIonic Monomer Select: > 2-4C Alkylene Oxide Etc. Claim 11: > (A): Water-Soluble. Claim 12: > MW of NonIonic Block > 3 Times MW > of Ionic Block. Claims 13,14: > NonIonic Block Contg Hydrophilic > Units: >70 & >90% resp. Claims 15,

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Units: >70 & >90% resp. Claims 15,'s subsections
16: (A) Concn.=0.001-30 & 0.01-5%

Units: >70 & >90% resp. Claims 15,'s products
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