Rubber composition and tire comprising same

Details Rubber composition and tire comprising same Rubber composition and tire comprising same

2006-12-15

2009-08-11

Mulcahy, Peter D (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C425S017000

Reexamination Certificate

active

07572850

ABSTRACT:
A rubber composition comprising the following compound:in-line-formulae description="In-line Formulae" end="lead"?R1—NH-phenyl-NH—R2in-line-formulae description="In-line Formulae" end="tail"?where the amino moieties occupy the 1 and 4 positions of the phenyl ring, and R1 and R2 are selected from the group consisting of H, C1 to C3 straight chain or branched alkyl groups, and wherein R1 and R2 may be the same or different; and where the t90, isothermal at 125° C. is within thirty percent of the t90, after 28 days aging at forty degrees Celsius (40° C.), as the unaged green rubber composition. In another embodiment, R1 and R2 are selected from C4 to C5 straight chain or branched alkyl groups. In another embodiment of the invention, R1 and R2 are selected from C6 to C15 straight chain or branched alkyl groups. In another embodiment of the invention, the rubber compound is greater than 5 parts by weight per hundred parts of the rubber composition.

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International Search Report, PCT/US2004/20961, dated Dec. 8, 2004.
Supplementary Partial European Search Report, EP 04 77 7290 (PCT/US2004/20961), dated Feb. 6, 2008.

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