Patent ID: 6034163
Filing Date: 2000-03-07
Classification: C01B,C08K

Abstract:
A composition comprising (i) a layered clay material which has been cation exchanged with an organic cation salt represented by formula I: ##STR4## wherein M represents either nitrogen or phosphorus; X.sup.-- represents an anion of halogen, hydroxide, or an acetate anion; R.sub.1 is a straight or branched chain alkyl group having at least 8 carbon atoms; R.sub.2 , R.sub.3, and R.sub.4 are independently a straight or branched alkyl group having 1 to 4 carbon atoms; and (ii) at least one expanding agent, wherein the cation-exchanged clay material contains platelet particles, the expanding agent separates the platelet particles into individual platelet particles and small tactoids, and the expanding agent is a polymer, or vitamin E.