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US 2002/0165305 A1Published application
Preparation of polymer nanocomposites by dispersion destabilization
AssigneeSouthern Clay Products, Inc.
InventorsMilburn I. Knudson JR., Clois E. Powell
Life of this patent
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Abstract
Nanocomposites may be produced by mixing dispersions of polymers and dispersions of clay minerals. After mixing, the dispersions may be destabilized with the addition of appropriate compounds. The flocculated solid material exhibits characteristics of a nanocomposite, such as exfoliation of the clay mineral platelets as indicated by x-ray diffraction analysis.
Claims100
A method of making a polymer nanocomposite comprising:
- combining a polymer dispersion with a clay mineral dispersion to form a clay-polymer dispersion;
- adding a flocculating agent to the clay-polymer dispersion mixture to form the polymer nanocomposite.
A polymer nanocomposite prepared by the method comprising:
- combining a polymer dispersion with a clay mineral dispersion to form a clay-polymer dispersion;
- adding a flocculating agent to the clay-polymer dispersion mixture to form the polymer nanocomposite.
A method of making a polymer nanocomposite comprising:
- forming a clay mineral dispersion by adding a clay mineral and an onium compound to a liquid carrier, wherein the onium compound is present in excess of the cation exchange capacity of the clay mineral such that a portion of the onium compound present is not bound to the clay mineral;
- combining a polymer dispersion with the clay mineral dispersion to form the polymer nanocomposite.
A polymer nanocomposite prepared by the method comprising:
- forming a clay mineral dispersion by adding a clay mineral and an onium compound to a liquid carrier, wherein the onium compound is present in excess of the cation exchange capacity of the clay mineral such that a portion of the onium compound present is not bound to the clay mineral;
- combining the polymer dispersion with the clay mineral dispersion to form the polymer nanocomposite.
Dependencies are inferred from the claim text.