Patent ID: 6414069
Filing Date: 2002-07-02
Classification: C08K

Abstract:
A hybrid 2:1 layered silicate composition consisting essentially of mixed organic and inorganic exchange cations in galleries which are between the silicate layers, wherein a first set of the galleries are mixed inorganic ions and organic onium ions and a second set of the galleries are mixed inorganic and organic cations that alternate irregularly with the first set of the galleries, wherein the first and second sets of the galleries contain different amounts of the organic onium ions, wherein the overall ratio of organic to inorganic ions defining the hybrid composition is between 25 to 75 and 75 to 25, wherein the initial hybrid layered silicate composition exhibits a x-ray basal spacing dobs that is either (i) greater than a sum of the basal spacings observed for the organic ion saturated exchanged form of the 2:1 silicate (do) and the saturated inorganic ion exchanged form of the silicate (dI) alone or (ii) is less than a sum of the basal spacing for do+dI and is greater than the basal spacing do after heating at 100Â° C. and wherein the hybrid 2:1 layered silicate composition is prepared from an inorganic ion exchanged silicate composition with a cation capacity of at least 90 meq per 100 g.