Nanocomposite polymer container

Details Nanocomposite polymer container Nanocomposite polymer container

1996-07-09

1999-03-02

Achutamurthy, Ponnathapura

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428216, B29D 2200, B32B 702

Patent

active

058768122

ABSTRACT:
The container of the present invention is composed of a polymer material integrated with a plurality of nanosize particles of a clay mineral which act to enhance the barrier properties of the container. The polymer material may be PET, COPET or any mixture thereof. The nanocomposite polymer container decreases the permeability of various gases without substantially altering the fabrication method for producing containers composed of PET or COPET material, and without altering the containers themselves. The nanocomposite polymer containers of the present invention are able to accomplish this due to the minimal amount of clay integrated with the polymer material, between 0.1% and 10% weight of the container. The small amount of clay provides a substantial barrier due to the high aspect ratios of the clay particles which will vary between 100 and 2000. The nanocomposite polymer container may be produced using in situ polymerization, solution intercalation, or melt exfoliation to integrate the clay mineral with the polymer material matrix. The clay mineral may be smectite, vermiculite, halloysite or any synthetic analog thereof, with a preference for the montmorillonite species of smectite clays.

REFERENCES:
patent: 5102948 (1992-04-01), Deguchi et al.
patent: 5122410 (1992-06-01), Lofgren et al.
patent: 5234763 (1993-08-01), Rosen

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