Patent 5272236 Issued on December 21, 1993. Estimated Expiration Date: October 15, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
526/348.5, N-hexene502/152, Organic compound including carbon-metal bond526/127, Contains non-transition free metal, hydride thereof, or carbon to non-transition metal atom bond526/160, Transition metal bonded to carbon atom526/170, Transition metal bonded to carbon atom526/348.2, At least six carbon atoms526/348.4, Six carbon atoms only526/348.6, At least four carbon atoms526/943POLYMERIZATION WITH METALLOCENE CATALYSTS
Substantially linear olefin polymers having a melt flow ratio, I10 /I2, ࣙ5.63, a molecular weight distribution, Mw /Mn, defined by the equation: Mw /Mn ࣘ(I10 /I2)-4.63, and a critical shear stress at onset of gross melt fracture of greater than about 4×106 dyne/cm2 and their method of manufacture are disclosed. The substantially linear olefin polymers preferably have at least about 0.01 long chain branches/1000 carbons and a molecular weight distribution from about 1.5 to about 2.5. The new polymers have improved processability over conventional olefin polymers and are useful in producing fabricated articles such as fibers, films, and molded parts.
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October 15, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
