| 摘要 |
Provided are acidified aqueous stable dispersions of an exfoliated silicate derived from a silicate having a layer lattice structure in which the silicate layer units have a thickness of 5 to 25 Angstroms, wherein the exchange capacity ranges from 30 to 200 millequivalents per gram of silicate having a layer lattice structure, and wherein the silicate materials have been exfoliated with a cationic group-containing polymer or polymer having functional groups which can be post-reacted to form cationic groups. These silicate dispersions are useful in coating compositions, particularly in electrodepositable coating compositions, where they impart improved crater control. |
