Importance

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Abstract

In the most preferred embodiments, the polypropylene jackets will meet the following specifications: a tensile strength of greater than or equal to 1500 psi (or greater than or equal to 10.3 MPa); and elongation at break of 150% or greater. Additionally, the aged requirements (121° C. for 168 hours) in most preferred embodiments are a retained tensile strength that is 70% of the original, and a retained elongation that is 70% of the original. Additionally, in most 10 preferred embodiments, the heat distortion at 131° C. is less than or equal to 30%. Additionally, in most preferred embodiments then carbon black percentage is 2% or greater. It should be understood, that in other embodiments of the polypropylene jackets, the various specifications and or requirements may fall outside some or all of these ranges.

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First Claim