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
2006-07-04
2006-07-04
Hendrickson, Stuart (Department: 1754)
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
active
07071257
ABSTRACT:
Rubber compositions comprising a precipitated silica with the following physico-chemical properties:BET surface area 35 to 350 m2/gBET/CTAB surface area ratio 0.8 to 1.1Pore volume, PV 1.6 to 3.4 ml/gSilanol group density 6 to 20 ml/(5 g)Average aggregate size 250 to 1500 nmCTAB surface area 30 to 350 m2/gDBP value 150 to 300 ml/100 gV2/V1by Hg porosimetry0.19 to 0.46DBP/CTAB 1.2 to 3.5.
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Esch Heinz
Görl Udo
Kuhlmann Robert
Rausch Ralf
Degussa - AG
Hendrickson Stuart
Pillsbury Winthrop Shaw & Pittman LLP
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