Polymer-organoclay-composites and their preparation

Details Polymer-organoclay-composites and their preparation Polymer-organoclay-composites and their preparation

C - Chemistry, Metallurgy

08

K

C08K 3/34 (2006.01) C08G 59/42 (2006.01) C08G 59/50 (2006.01) C08K 9/04 (2006.01) C08L 63/00 (2006.01) C08L 67/00 (2006.01) C08L 71/00 (2006.01) C09D 167/00 (2006.01) C09J 167/00 (2006.01)

Patent

CA 2246269

A polymer composite comprising a hydroxy-phenoxyether or polyester polymer matrix having dispersed therein layers of an inorganic material derived from a multilayered inorganic material having organophilic properties. The dispersion of the multilayered inorganic material in the polymer matrix is such that an increase in the average interlayer spacing of the layered inorganic material occurs. This increase in interlayer spacing occurs to a significant extent resulting in the formation of a nanocomposite. The polymers are preferably derived from a diglycidyl ether or ester or an epihalohydrin and a dinucleophile such as a dicarboxylic acid, a difunctional amine, a bisphenol or a sulfonamide. As the organophilic inorganic material clay minerals modified with organic ammonium compounds are used.

Composite polymère comprenant une matrice polymère hydroxy-phénoxyéther ou polyester, dans laquelle sont dispersées des couches d'un matériau dérivés d'un matériau inorganique feuilleté, présentant des propriétés organophiles. La dispersion du matériau inorganique feuilleté dans la matrice polymère est réalisée de manière à produire une augmentation de l'espace interfeuillet moyen. Cette augmentation de l'espacement interfeuillet se produit dans une mesure significative, ce qui entraîne la formation d'un nanocomposite. Les polymères sont de préférence dérivés d'un éther ou ester de diglycidyle ou d'une épihalohydrine et d'un dinucléophile tel que l'acide dicarboxylique, une amine difonctionnelle, un bisphénol ou un sulfamide. Comme matériau inorganique organophile on utilise des argiles modifiées par des composants d'ammonium organiques.

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