C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 3/22 (2006.01) C08K 3/34 (2006.01) C08K 9/04 (2006.01) C08K 9/08 (2006.01) C08L 67/02 (2006.01)
Patent
CA 2289694
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.
L'invention concerne un composite constitué de particules plaquettaires/polyester. Ce composite comprend au moins un polyester renfermant une dispersion de particules plaquettaires qui contient 0,01 à 25 % en poids environ de particules plaquettaires, et au moins un polymère dispersible dans l'eau, à une concentration égale à au moins 1 partie environ de polymère pour une partie dudit polyester, lesdites particules plaquettaires étant constituées principalement de particules plaquettaires individuelles et de tactoïdes. Pour préparer les composites de la présente invention, on disperse au moins un matériau argileux dans un polymère dispersible dans l'eau, de façon à former une dispersion de particules plaquettaires; puis on introduit ladite dispersion dans un polyester et on mélange par extrusion ladite dispersion et ledit polyester.
Barbee Robert Boyd
Piner Rodney Layne
Trexler Jack Wesley Jr.
Turner Sam Richard
Eastman Chemical Company
Gowling Lafleur Henderson Llp
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