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
2006-03-21
2006-03-21
Wyrozebski-Lee, Katarzyna (Department: 1714)
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...
C524S496000, C524S493000
Reexamination Certificate
active
07015272
ABSTRACT:
A pneumatic rubber tire having a rubber composition prepared with ultra high molecular weight crystalline polyethylene and m-phenylene bismaleimide. Such crystalline polyethylene has a melting point in a range of about 125° C. to about 140° C. Such rubber composition is prepared by blending its elastomers and ultra high molecular weight polyethylene together with m-phenylene bismaleimide at a temperature in a range of from about 150° C. to about 180° C. and at least 10° C. above the melting point of said polyethylene, prior to subsequently blending sulfur curatives therewith at a temperature in a range of from about 90° C. to about 115° C. Such rubber composition may be a tire component such as, for example, circumferential rubber tread, rubber tire sidewall, circumferential cord reinforced rubber belt underlying a tire tread and carcass cord reinforced rubber ply components.
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The Goodyear Tire & Rubber Company
Wyrozebski-Lee Katarzyna
Young, Jr. Henry C.
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