| abstract |
Improved chemical and thermal stability of the amine tether by the geminal dialkyl group on the β carbon atom derived from the tertiary amine in the linking group between the tertiary amine and the remainder of the dispersant Disclosed is a polymeric dispersant comprising a plurality of amine tethering groups. Desirably, the dispersant also includes solvent-soluble chains of polyethers, polyesters, polyacrylates, and / or polyolefins. These dispersants are more thermally stable than similar dispersants that do not have a geminal dialkyl-substituted carbon at the beta (β) carbon of the alkylene group. |