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
2006-12-28
2010-02-16
Zemel, Irina S (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...
C525S331900, C525S332900, C525S333100, C525S333300, C525S386000, C524S080000, C524S492000, C152S905000
Reexamination Certificate
active
07662883
ABSTRACT:
The present invention is directed to rubbery block polymers containing a polylactone, such as polycaprolactone, methods of making the same, and to rubber compounds containing those block polymers. The rubbery block polymer is an anionically polymerized block polymer defined by A-B, wherein A includes at least one type of polymerized conjugated diene monomer, a polymerized vinyl aromatic monomer, or a mixture thereof and wherein B is a polylactone, such as polycaprolactone, which is hydroxy terminated. The rubbery block polymer may be compounded so to provide, for example, a tire tread with desirable properties for use in an automobile tire. Such rubber compound, for example, can include the rubbery block polymer, an organosilane coupling agent, such as a bis(trialkoxysilyl) alkane, bis(trialkoxysilylalkyl) polysulfide, or mixtures thereof, and silica filler in specified amounts.
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Halasa Adel Farhan
Hsu Wen-Liang
Khadir Abderrahim
Weydert Marc
Zuppo, III John Robert
Lenihan Jeffrey
The Goodyear Tire & Rubber Company
Wood Herron & Evans L.L.P.
Zemel Irina S
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