Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2002-05-29
2009-02-03
Jagannathan, Vasu (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C524S552000, C525S379000, C525S380000
Reexamination Certificate
active
07485677
ABSTRACT:
The present invention is a blend of an halogenated elastomer and a clay, desirably an exfoliated clay, to form a nanocomposite suitable for an air barrier. In one embodiment, the halogenated elastomer is a polymer comprising C4to C7isoolefin derived units, a para-methylstyrene derived units, and para-(halomethylstyrene) derived units. In another embodiment, the halogenated elastomer is a butyl-type rubber. The clay may or may not have an additional exfoliating treatment present prior to blending with the interpolymer. The interpolymer/clay mixture forms a distinct phase in the nanocomposite blend of the invention. The blend of the invention has improved air barrier properties and is suitable as an innerliner or innertube.
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Chung David Yen-Lung
Dias Anthony Jay
Gong Caiguo
Tsou Andy Haishung
Weng Weiqing
ExxonMobil Chemical Patents Inc.
Faulkner Kevin M.
Feng Xiaobing
Jagannathan Vasu
Krawczyk Nancy T.
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