Michelin Key statement: A rubber composition comprising the following compound: R1--NH-phenyl-NH--R2 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[degrees]C is within 30% of the t90 after 28 days aging at 40[degrees]C as the unaged green rubber composition.

In practical processing, such as extrusion and film forming, crystallization usually proceeds under isothermal and nonisothermal conditions.

Isothermal Technology has developed a precision thermometer - the microK 100 - which guarantees enhanced levels of performance, as well as being able to measure temperature to an accuracy of more than 0.