Eastman Chemical Company

Other

Medical University of South Carolina

Jack Wesley Trexler, Jr

Rodney Layne Piner

Robert Boyd Barbee

Sam Richard Turner

James Christopher Matayabas, Jr

Gary Wayne Connell

John Walker Gilmer

Jeffrey Todd Owens

Shriram Bagrodia

David Scott Porter

Louis Thomas Germinario

James Christopher Scanlan

Crystallizable polyester compositions containing an aliphatic polyamide crystallization nucleator exhibit controllable and adjustable crystallization rates upon cooling from the melt and are thermoformable in melt to mold processes.

Nucleation enhanced polyester and its use in melt-to-mold processing of molded articles

Process for preparing high barrier nanocomposites

Nanocomposites for high barrier applications

This invention relates to novel multilayer formed articles including, but not limited to containers such as bottles, tubes, pipes, preforms and films (including oriented films such as biaxially oriented) comprising a melt processible resin having dispersed therein a platelet filler. The multilayer formed articles have improved barrier while maintaining excellent clarity. More particularly, the multilayer structures of the present invention display haze values of less than about 2% and carrier resins which are substantially free from platelet particles having a diameter greater than about 15 microns.

Clear, high-barrier polymer-platelet composite multilayer structures

The present invention relates to a polyester-platelet particle composite comprising at least one polyester having dispersed therein a platelet particle dispersion comprising chalcogen or platelet particles and at least one water dissipatible polymer.

Polyester/platelet particle compositions displaying improved dispersion

The present invention relates to polyester-platelet particle composite comprising; at least one polyester having dispersed therein a platelet particle dispersion comprising about 0.01 to about 25 weight percent platelet particles and at least one water dissipatible polymer in a concentration which is at least about 1 part water dissipatible polymer to 1 part said polyester wherein said platelet particles primarily comprise individual platelet particles and tactoids. The composites of the present invention are prepared by dispersing at least one clay material in a water dissipatible polymer to form a platelet particle dispersion; introducing said platelet particle dispersion to a polyester and extrusion mixing said dispersion and polyester.

Process for making polyester/platelet particle compositions displaying

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.

Polyester nanocomposites for high barrier applications

Growing community of inventors

Kingsport, TN, United States of America

Jack Wesley Trexler, Jr