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
2007-03-06
2007-03-06
Moore, Margaret G. (Department: 1712)
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...
C524S575500, C524S574000, C523S212000, C525S106000, C525S105000
Reexamination Certificate
active
10946188
ABSTRACT:
The present invention relates to a sulfur-cross-linkable elastomeric composition that is useful for the manufacture of tires. This elastomeric composition is based on at least one isoprene elastomer (in particular natural rubber), a reinforcing inorganic filler (in particular, silica), and an (inorganic filler/isoprene elastomer) coupling agent. The coupling agent is a multifunctional polyorganosiloxane (POS), which comprises functions denoted as “Y” and “X”, wherein the Y function is at least one hydroxyl or hydrolyzable function grafted to the silicon atoms of the coupling agent and the X function is a group bearing at least one activated ethylene double bond and is grafted to the silicon atoms of the coupling agent. This POS is, in particular, a POS having an imide, acid or ester function, the ethylene double bond of which is activated by at least one adjacent carbonyl group (—C═O). The present invention further relates to a tire comprising the composition described above as well as semi-finished products for tires, in particular, treads, where the tires comprise a rubber composition according to the present invention.
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Guennouni Nathalie
Pagano Salvatore
Tardivat Jean-Claude
Thonier Christel
Buchanan & Ingersoll & Rooney PC
Michelin & Recherche et Technique S.A.
Moore Margaret G.
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