Stock material or miscellaneous articles – Composite – Of polyamide
Reexamination Certificate
2001-10-31
2010-10-05
Nordmeyer, Patricia L (Department: 1783)
Stock material or miscellaneous articles
Composite
Of polyamide
C428S475200, C428S542800, C428S036700, C428S036600, C428S035700, C428S036910, C215S012200
Reexamination Certificate
active
07807270
ABSTRACT:
The present invention provides compositions useful as a barrier layer in, for example, packaging products. The compositions generally comprise a blend of (i) a polyester material, preferably an aromatic polyester resin such as polyethylene terephthalate (PET) and (ii) a vinyl alcohol material. The blend optionally may further comprise (iii) a polyolefin material (preferably a functionalized polyolefin material, e.g., a BYNEL material); and/or (iv) a polyamide material (preferably an amorphous polyamide material, e.g., a GRIVORY material), that optionally further comprises an oxygen scavenging material. The present invention also provides containers (e.g., containers formed by expansion of preforms) having a multilayered body-forming portion including: a core layer comprising the aforementioned blend, and inner and outer layers of a formable polymer composition. The present invention also provides methods of making such containers.
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The supplementary European search report for corresponding European patent application No. 06 02 0141.5, dated Jan. 16, 2007 (4 pages).
Pillage Keith R.
Share Paul E.
Nordmeyer Patricia L
Shumaker & Sieffert P.A.
Valspar Sourcing Inc.
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