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AssigneeEastman Chemical Company
InventorsRobert Boyd Barbee, James Christopher Matayabas, Jr., Jack Wesley Trexler, Jr., Rodney Layne Piner
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The present invention relates to a composition comprising a polymer having dispersed therein at least one layered clay material which has been cation exchanged with an organic cation salts represented by Formula I: ##STR1## wherein M represents either nitrogen or phosphorous; X.sup.- represents an anion selected from the group consisting of halogen, hydroxide, or acetate anions, preferably chloride and bromide; R.sub.1 is selected from the group consisting of straight and branched alkyl groups having at least 8 carbon atoms; R.sub.2, R.sub.3, and R.sub.4 are independently selected from straight or branched alkyl groups having 1 to four carbon atoms; and at least one expanding agent which is compatible with said polymer. Preferred polymers include polyesters. The compositions of the present invention show vastly improved platelet separation as evidenced by higher than previously reported basal spacing.
A composition comprising (i) a layered clay material which has been cation exchanged with an organic cation salt represented by formula I:
A composition comprising at least one polymer having dispersed therein at least one layered clay material which has been cation exchanged with an organic cation salt having one substituent R.sub.1 selected from the group consisting of a straight and a branched alkyl group having at least 8 carbon atoms;
A composition comprising at least one polyester having dispersed therein at least one layered clay material which has been cation exchanged with an organic cation salt having one substituent R.sub.1 selected from the group consisting of a straight and a branched alkyl group having at least 8 carbon atoms, and at least one expanding agent which is compatible with said polymer, wherein said basal spacing between the layers of the layered clay material is greater than about 3, and 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.
A composition comprising
Dependencies are inferred from the claim text.