Method for preparing polar thermoplastic resin compositions havi

Details Method for preparing polar thermoplastic resin compositions havi Method for preparing polar thermoplastic resin compositions havi

1984-06-08

1985-08-20

Pertilla, Theodore E.

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

525119, 525342, 525423, 525431, 525438, 525446, 525463, 525464, B65D 8100, C08L 6702

Patent

active

045364257

ABSTRACT:
A method of preparing a polar thermoplastic resin having improved resistance to gas permeability is disclosed wherein a blend of the resin and coarse mica flakes having an average particle size of less than about 100 mesh is prepared, the blend being prepared under mixing conditions which impart a shear force to the mica flakes sufficient to delaminate the flakes into individual platelets, substantially increasing the original aspect ratio of the flakes whereby an increase in the gas barrier properties of the resin is attained greater than that attained with fine mica flakes having an average particle size greater than about 100 mesh.

REFERENCES:
patent: 3036023 (1962-05-01), Rogers, Jr. et al.
patent: 3464854 (1969-09-01), Bolger
patent: 3515626 (1970-06-01), Duffield
patent: 4405727 (1983-09-01), Brownscombe

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