Patent ID: 8063132

Claim:
A coating composition containing boehmite particles, the composition comprising one or more dispersants in association with an aqueous dispersing medium, wherein said dispersant comprises a compound having an anchoring moiety linked to a polymeric hydrophilic moiety, said anchoring moiety containing at least one acid and/or hydroxy group and having an overall acidity or neutrality and said polymeric moiety having a lower affinity for a boehmite surface than said anchoring moiety and wherein said boehmite particles have a crystallite particle size in the range 8-80 nm, wherein said polymeric hydrophilic moiety is selected from the group consisting of polyacrylamide, poly-N,N-di-methylacrylamide, poly-2-acryl-amido-2-hydroxy-methyl-1,3-propandiol, poly-methacrylamide, poly-N-methylacrylamide, poly-N-methyl-methacrylamide, and mixtures thereof.