Patent ID: 6767968
Filing Date: 2004-07-27
Classification: C08F

Abstract:
A block copolymer characterized by the general formula (AB)n-Core, where A and B are polymeric blocks and Core is a non-polymeric linking core; wherein said block copolymer comprises at least one random block comprised of two or more monomers, wherein at least one of said two or more monomers is hydrophilic and at least one of said two or more monomers is hydrophobic such that an absolute difference in log p between said at least one hydrophobic and hydrophilic monomers is at least about 0.5; and n is 2 or more; wherein the polymer comprises at least one unit selected from the group consisting of acrylic acid, methacrylic acid, N,N-dimethylacrylamide, dimethyl aminoethyl methacrylate, quaternized dimethylaminoethyl methacrylate, methacrylamide, (2-methoxyethyl)acrylate, N-t-butyl acrylamide, maleic acid, maleic anhydride and its half esters, crotonic acid, itaconic acid, acrylamide, acrylate alcohols, hydroxyethyl methacrylate, diallyldimethyl ammonium chloride, vinyl ethers, maleimides, vinyl pyridine, vinyl imidazole, other polar vinyl heterocyclics, styrene sulfonate, allyl alcohol, vinyl alcohol, vinyl acetate, salts of any acids and amines listed above, and mixtures thereof; and provided that said block copolymer is soluble or miscible in water, methanol, ethanol or isopropanol or any combination thereof at a concentration of at least about 20 mg/mL at room temperature.