Butyl nanocomposite via low Mw elastomer pre-blend

Details Butyl nanocomposite via low Mw elastomer pre-blend Butyl nanocomposite via low Mw elastomer pre-blend

2006-04-07

2009-12-29

Sanders, Kriellion A (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...

C524S447000, C524S449000, C524S451000, C524S492000, C524S495000, C524S497000

Reexamination Certificate

active

07638573

ABSTRACT:
The present invention provides a method to form a nanocomposite including blending a high molecular weight elastomer, a low molecular weight elastomer, and a clay to form a nanocomposite; wherein the high molecular weight elastomer has a weight average molecular weight greater than 250000; wherein the low molecular weight elastomer has a weight average molecular weight less than 150000. In another embodiment, the invention provides a method to form a nanocomposite including the steps of blending a low molecular weight elastomer and a clay to form a first mixture; blending a high molecular weight elastomer and the first mixture to form the nanocomposite; wherein the low molecular weight elastomer has a weight average molecular weight less than 150000; and, wherein the high molecular weight elastomer has a weight average molecular weight greater than 250000.

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