Long chain branched (LCB), block or interconnected copolymers of ethylene in combination with one other polymer
View Patent ↗An ethylenic polymer comprising amyl groups from about 0.1 to about 2.0 units per 1000 carbon atoms as determined by Nuclear Magnetic Resonance and both a peak melting temperature, T m , in ° C., and a heat of fusion, H f , in J/g, as determined by DSC Crystallinity, where the numerical values of T m and H f correspond to the relationship T m ≧(0.2143*H f )+79.643. An ethylenic polymer comprising at least one preparative TREF fraction that elutes at 95° C. or greater using a Preparative Temperature Rising Elution Fractionation method, where at least one preparative TREF fraction that elutes at 95° C. or greater has a gpcBR value greater than 0.05 and less than 5 as determined by gpcBR Branching Index by 3D-GPC, and where at least 5% of the ethylenic polymer elutes at a temperature of 95° C. or greater based upon the total weight of the ethylenic polymer.
1. An ethylenic polymer comprising at least 0.1 amyl branches per 1000 carbon atoms as determined by Nuclear Magnetic Resonance and both a highest peak melting temperature, T m , in ° C., and a heat of fusion, H f , in J/g, as determined by DSC Crystallinity, where the numerical values of T m and H f correspond to the relationship:
T m ≧(0.2143 *H f )+79.643,
and wherein the ethylenic polymer has less than about 1 mole percent hexene comonomer, and less than about 0.5 mole percent butene, pentene, or octene comonomer.
2. The ethylenic polymer of claim 1 wherein the polymer has less than about less than about 0.1 mole percent butene, pentene, or octene comonomer.
3. The ethylenic polymer of claim 1 , where the heat of fusion of the ethylenic polymer is less than about 170 J/g.
4. The ethylenic polymer of claim 1 , where the peak melting temperature of the ethylenic polymer is less than 126° C.
5. The ethylenic polymer of claim 1 , where the ethylenic polymer comprises no detectable methyl branches as determined by Nuclear Magnetic Resonance.
6. The ethylenic polymer of claim 1 , where the ethylenic polymer comprises no detectable propyl branches as determined by Nuclear Magnetic Resonance.
7. The ethylenic polymer of claim 1 , where the ethylenic polymer comprises no greater than 2.0 units of amyl groups per 1000 carbon atoms as determined by Nuclear Magnetic Resonance.
8. The ethylenic polymer of claim 1 , where the numerical values of T m and H f correspond to the relationship:
T m ≧(0.2143 *H f )+81.