DELAMINATION-RESISTANT MULTILAYER CONTAINER, PREFORM, ARTICLE AND METHOD OF MANUFACTURE
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United States of America Patent
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app pub date -
Jan 30, 2009
filing date -
Oct 16, 2003
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Abandoned
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Abstract
A plastic container, preform or article includes a multilayer wall having at least one layer of matrix resin, at least one layer of barrier resin, and an adhesion-promoting material blended with the barrier resin and/or the matrix resin to promote bonding between the barrier and matrix layers. The matrix resin preferably is an ester-containing resin, most preferably a polyester such as PET. The adhesion-promoting material includes an amine polymer, preferably an imine polymer having a plurality of available primary, secondary or tertiary amine groups. An alkylene imine polymer is preferred, particularly a polyethyleneimine polymer.
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