Acidified aqueous dispersions of high aspect ratio clays

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

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524445, 524447, 524448, 524449, 524442, 524589, 524612, 204499, 204502, 204505, C08K 336

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active

061073873

ABSTRACT:
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.

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