1. An olefin polymer having a melt index of less than or equal to about 50 g10 min, a ratio of MwMn in a range from about 4 to about 20, a density in a range from about 0.90 gcm3 to about 0.945 gcm3, and a substantially constant short chain branch distribution (SCBD).
2. The polymer of claim 1, wherein the olefin polymer has:
a Mn in a range from about 8,000 to about 30,000 gmol; and
a ratio of MwMn in a range from about 4 to about 10.
3. The polymer of claim 1, wherein the olefin polymer has:
a density in a range from about 0.91 to about 0.94 gcm3;
a ratio of HLMIMI in a range from about 10 to about 100;
a Mw in a range from about 50,000 to about 300,000 gmol; and
a ratio of MzMw in a range from about 2 to about 5.
4. The polymer of claim 1, wherein the olefin polymer is an ethylene1-butene copolymer, an ethylene1-hexene copolymer, or an ethylene1-octene copolymer.
5. An article comprising the olefin polymer of claim 4.
6. The polymer of claim 1, wherein the olefin polymer has:
a melt index in a range from about 0.1 to about 10 g10 min;
a ratio of MwMn in a range from about 4.1 to about 8;
a density in a range from about 0.915 gcm3 to about 0.945 gcm3; and
a substantially constant short chain branch distribution (SCBD).
7. The polymer of claim 6, wherein the olefin polymer is an ethylene1-butene copolymer, an ethylene1-hexene copolymer, or an ethylene1-octene copolymer.
8. The polymer of claim 7, wherein the olefin polymer has:
less than about 0.008 long chain branches per 1000 total carbon atoms; and
a bimodal molecular weight distribution.
9. The polymer of claim 7, wherein the olefin polymer has:
a ratio of HLMIMI in a range from about 10 to about 250; and
a ratio of MzMw in a range from about 2 to about 4.
10. An article comprising the olefin polymer of claim 7.
11. A polymerization process, the process comprising:
contacting a catalyst composition with an olefin monomer and an optional olefin comonomer in a polymerization reactor system under polymerization conditions to produce an olefin polymer, wherein the catalyst composition comprises catalyst component I, catalyst component II, an activator, and an optional co-catalyst, wherein:
catalyst component I comprises a boron bridged metallocene compound with a cyclopentadienyl group and an indenyl group; and
catalyst component II comprises a single atom bridged metallocene compound with a fluorenyl group.
12. The process of claim 11, wherein:
the catalyst composition comprises an organoaluminum co-catalyst; and
the activator comprises a fluorided solid oxide andor a sulfated solid oxide.
13. The process of claim 11, wherein the activator comprises an aluminoxane compound, an organoboron or organoborate compound, an ionizing ionic compound, or any combination thereof.
14. The process of claim 11, wherein:
the polymerization reactor system comprises a slurry reactor, a gas-phase reactor, a solution reactor, or a combination thereof; and
the olefin monomer comprises ethylene, and the olefin comonomer comprises 1-butene, 1-hexene, 1-octene, or a mixture thereof.
15. The process of claim 11, wherein the olefin polymer is an ethylenea-olefin copolymer characterized by a substantially constant short chain branch distribution.
16. A catalyst composition comprising catalyst component I, catalyst component II, an activator, and an optional co-catalyst, wherein:
catalyst component I comprises a boron bridged metallocene compound having formula (A):
and
catalyst component II comprises a single atom bridged metallocene compound having formula (B):
wherein:
M and M3 independently are Ti, Zr, or Hf;
each X independently is a monoanionic ligand;
Cp is a cyclopentadienyl group, optionally substituted;
Ind is an indenyl group, optionally substituted;
CpC is a cyclopentadienyl group or an indenyl group, optionally substituted;
RX and RY independently are H, a halide, a C1 to C36 hydrocarbyl group, a C1 to C36 halogenated hydrocarbyl group, a C1 to C36 hydrocarboxy group, or a C1 to C36 hydrocarbylsilyl group;
each R independently is H, a C1 to C36 hydrocarbyl group, or a C1 to C36 hydrocarbylsilyl group; and
each R3 independently is H or a C1 to C18 hydrocarbyl group.
17. The composition of claim 16, wherein the activator comprises an aluminoxane compound, an organoboron or organoborate compound, an ionizing ionic compound, or any combination thereof.
18. The composition of claim 16, wherein the catalyst composition comprises a co-catalyst, and wherein the activator comprises an activator-support, the activator-support comprising a solid oxide treated with an electron-withdrawing anion.
19. The composition of claim 16, wherein a weight ratio of catalyst component Ito catalyst component II is in a range of from about 1:10 to about 10:1.
20. The composition of claim 16, wherein:
M and M3 independently are Zr or Hf;
each X independently is a halide or a C1 to C18 hydrocarbyl group;
at least one of Cp and Ind has an alkenyl substituent;
CpC is a cyclopentadienyl group, optionally substituted;
RX and RY independently are a C1 to C8 hydrocarbyl group;
E3 is C or Si;
each R independently is a C1 to C1e hydrocarbyl group; and
each R3 independently is a C1 to C12 hydrocarbyl group.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A dried fibrillated mixture of lyocell fibers and cellulose pulp fibers having a Canadian Standard Freeness of 250 mL CSF or less, wherein the pulp fibers in the mixture is in the range of 10% to 75% of the total weight of the fibers in the mixture and the mixture has a water content from 0% to 30% of the weight of the fibers and water.
2. The mixture of claim 1 wherein the pulp has a DP of 200 to 1000 as measured by ASTM Test D 1975-96.
3. The mixture of claim 1 wherein the pulp has a DP of greater than 1000 as measured by ASTM Test D 1975-96.
4. The mixture of claim 1 wherein the pulp fibers in the mixture is in the range of 20% to 70% of the total weight of the fibers in the mixture.
5. The mixture of claim 4 wherein the pulp has a DP of 200 to 1000 as measured by ASTM Test D 1975-96.
6. The mixture of claim 4 wherein the pulp has a DP of greater than 1000 as measured by ASTM Test D 1975-96.
7. The mixture of claim 1 wherein the mixture has a water content from 0% to 10% of the weight of the fibers and water.
8. The mixture of claim 7 wherein the pulp has a DP of 200 to 1000 as measured by ASTM Test D 1975-96.
9. The mixture of claim 7 wherein the pulp has a DP of greater than 1000 as measured by ASTM Test D 1975-96.
10. A method of providing a dried fibrillated mixture of lyocell fibers and cellulose pulp fibers comprising
fibrillating a mixture of lyocell fibers and cellulose pulp fibers in water to a Canadian Standard Freeness of 250 mL CSF or less, wherein in the pulp fibers in the mixture is in the range of 10% to 75% of the total weight of the fibers in the fiber mixture,
drying the fiber mixture and water until the water content of the mixture is 0% to 30% of the weight of the fibers and water, and the Canadian Standard Freeness is 250 mL CSF or less.
11. The method of claim 10 wherein the pulp has a DP of 200 to 1000 as measured by ASTM Test D 1975-96.
12. The method of claim 10 wherein the pulp has a DP of greater than 1000 as measured by ASTM Test D 1975-96.
13. The method of claim 10 wherein the pulp fibers in the mixture is in the range of 20% to 70% of the total weight of the fibers in the fiber mixture.
14. The method of claim 13 wherein the pulp has a DP of 200 to 1000 as measured by ASTM Test D 1975-96.
15. The method of claim 13 wherein the pulp has a DP of greater than 1000 as measured by ASTM Test D 1975-96.
16. The method of claim 10 wherein the water content of the mixture is 0% to 10% of the weight of the fibers and water.
17. The method of claim 16 wherein the pulp has a DP of 200 to 1000 as measured by ASTM Test D 1975-96.
18. The method of claim 16 wherein the pulp has a DP of greater than 1000 as measured by ASTM Test D 1975-96.