The EPOC Catalyst Family
Density Range
The EPOC Z/N catalysts are capable of a broad density range Traditional Chromoxide catalysts 945 - 955 920 - 945 935 - 960 >955
Chrome catalyst type 1 Chrome catalyst type 3 (titanated) Organometallic Chrome Type I Organometallic Chrome Type II
Typical Z/N: different types for different applications and ranges for density M-type I M-type II
915 - 940 935 - 965
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EPOC 330
EPOC 350
900
905
910
915
920
925
930
935
940
945
950
955
915 - 965
MI
965
Chrome II
Chrome 1
EPOC catalysts traditional catalysts
960
M II
Chrome I
designed chemistry bimodal EPOC 330-350
EPOC 330
Chrome 3
designed chemistry unimodal EPOC 310-320
EPOC 310-320
<900 - >950
Designed Chemistry
The EPOC Catalyst Family
Application Areas
MI2 / Density window showing the ability of the EPOC catalyst family with some typical application areas 100
MI2
Window for EPOC Z/N family, covering both single and bimodal operations Injection molding
10 Rotomolding Cast film Blown film
1 Blow molding Pipe 100 HD Film
0.1
0.0
Density (kg/m3) 900
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910
920
930
940
950
960
970
Designed Chemistry
980
The EPOC Catalyst Family
Activity vs. MFR
Dependence of activity on the hydrogen/ethylene ratio MgCl2-supported Z/N catalyst common Z/N catalysts EPOC catalyst 50
The lack of any reducing agent in the catalyst guarantees a long shelf life.
Activity
45
The recipe and the choice of carrier depends on the process and the resins produced.
40 35 30
Compared to other commercial Zeigler Natta catalysts, the activity of EPOC catalysts is much less dependent on the hydrogen/ethylene ratio.
25 20 15 10 5 MFR
0 100
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All EPOC Ziegler Natta catalysts are Ti-based and silica supported procatalysts. This means they are inactive as long as there is no external co-catalyst added.
200
300
400
500
The general performance features of the EPOC family of catalysts allow the production of PE-resins from LLDPE to HDPE with one catalyst only. Hydrogen selectivity and comonomer response are very good. The catalystâ&#x20AC;&#x2122;s ability to produce high bulk density polymer results in high settling efficiency in loop reactors and improved throughput in gas phase reactors. The need for co-catalyst is low. There is almost no catalyst activity decay over time. The long catalyst lifetime results in stable operations, which makes the EPOC catalysts desirable for long residence time processes such as the ones encountered with series reactor processes.
Designed Chemistry
The EPOC Catalyst Family
Carrier Particle Size
Suitable for all types of processes Gas-phase In gas-phase processes (EPOC 310), the larger particle size of the carrier and other special properties provide the following advantages: →→ good fluidization properties, →→ easily measurable and controllable bed height, →→ high bulk densities, →→ good powder morphology for proper handling, and →→ accurate catalyst injection
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loop-reactor
multistage
In slurry loop-reactor processes (EPOC 320), the larger particle size of the carrier makes it easy to obtain:
In multi-stage processes (bimodal), dual gasphase processes, and others, the smaller particle size of the carrier in EPOC 330 - 350 makes it easy to run the reactors:
→→ high slurry densities, →→ high settling efficiency, and →→ good particle morphology.
→→ under high-productivity conditions (low ash), →→ with long residence times without the formation of too large polymer particles, and →→ with great continuity and desired morphology
Designed Chemistry