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AssigneeThe Dow Chemical Company
InventorsKenneth W. Anderson, Chai-Jing Chou, Jerry E. White, Christine A. Polansky
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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.
A polymer composite comprising a polymer portion of a hydroxy-functionalized polyether or polyester and a particle portion dispersed therein comprising delaminated particles derived from a multilayered inorganic material which possesses organophilic properties wherein the polymer composite provides reduced oxygen transmission as compared to the polymer portion.
A method for forming a composite which comprises contacting a hydroxy-functionalized polyether or polyester, or a precursor to a hydroxy-functionalized polyether or polyester with an inorganic layered filler intercalated with an organic intercalant and optionally an ionic or non-ionic inorganic intercalant.
A method for increasing the interlayer distance of an inorganic layered silicate which comprises blending the inorganic layered silicate with a fatty acid derived intercalating agent.
Dependencies are inferred from the claim text.