Clariant and Lummus Novolen will jointly invest about CHF 65 million in this new stateof-the-art polypropylene catalyst production line at. Lummus Novolen Technology GmbH company research & investing information. Find executives and the latest company news. Lummus Technology licenses its Novolen® gas phase polypropylene (PP) technology for the production of the full range of PP resins. This reliable, versatile .
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The composition of claim 1 wherein said xylene soluble fraction has an intrinsic viscosity of above about 1. The second catalytic component may act as an external electron donor during use, and lummue herein do not require use of any additional external electron donors to control polymerization and reliably vary the properties of the resulting polymer.
The polymerization can be carried out batchwise or, preferably, continuously. Seal strength is a quantitative measure for use in process validation, process control and capability.
Compared to EP B1, the compositions provided in the present invention can be used as the sole component of a sealing layer in a mono- bi- or multi-layer cast or biaxially oriented film due to their low-enough MFR and lower levels of extractables.
The resins of Comparative Examples 38 lmmus 39 represent the relatively low melting point components. A method for making a solid catalyst component for use in a Ziegler-Natta catalyst includes combining in a hydrocarbon solvent a porous particulate support with a hydrocarbon soluble organomagnesium compound to form a suspension. The resins of Examples 5 and 6 represent the relatively low melting point component used in the polymer blend of the invention.
While the vast majority of sealing layer compositions is based on ZN catalysts, some compositions have been described that are based on metallocene catalysts. The results in terms ljmmus population of fractions are set forth in Table 9.
Moreover, the balance between tensile modulus and level of solubles needs improvement. Sterically demanding dialkokxydialkylsilanes as external donors for Ziegler catalysts for the polymerization of propylene. The unreacted monomer is recovered and recycled. I found out about Clariant from a friend. More preferred, a metallocene compound A of the catalyst system used for the polymerization of the composition of the present invention, use is made of at least one compound of the formula II below.
The solid thus obtained was filtered off and washed a llummus of times with ethylbenzene. This makes the present lunmus exhibit the best balance of SIT and level of hexane extractables compared to prior art.
Example 1 This example demonstrates the preparation of a metallocene olefin polymerization catalyst. Thereafter, the polymer solution was discharged while the polymer crystals remained behind in the extractor. Since these compositions are aiming at films with an improved balance of mechanical properties, the SIT is not competitive with the SIT of low sealing compositions.
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Dwell time was 0. The end point of the heat-seal curve is when increasing temperature levels causes a break or tear of material at edge of seal commonly referred to as a fusion seal. The process of to claim 27, wherein the polymerization is carried out lummus gas phase.
M 3 is an alkali metal, an alkaline-earth metal or a metal of the 3rd main group of the Periodic Table i. A process and printer systems for printing a three-dimensional object are disclosed. All films had a target thickness of 2 mil. Comparative Example 36 Example 1 was repeated with the exception that instead of the metallocene rac-dimethylsilanediyl 2-methyl para-tert-butyl-phenyl -indenyl 2-isopropyl para-tert-butyl-phenyl zirconiumdichloride, the metallocene rac-dimethylsilanediylbis 2-methyl-indenyl zirconiumdichloride was used.
Polypropylene Process by Lummus Novolen Technology GmbH | Process Engineering News & Updates
Improved Ziegler-Natta catalysts and methods of making the improved catalyst are described. The solid product was then separated from the extractant by filtration and washed with heptane until the washings contained only 0. This facilitates the production of the composition of the present invention tremendously.
The following specifications were used for running the device: The metallocene compound Aand also the metallocenium-ion-forming compounds Bcan be used in solution, particular reference being given to aromatic hydrocarbons having from 6 to 20 carbon atoms, in particular xylenes and toluene. Comparative Examples 32 to 35 Films were made from the pellets of Comparative Examples 28 to 31 as described above.
Supertransparent high impact strength random block copolymer. R 22 is hydrogen, C 1 -C 10 -alkyl, C 6 -C 15 -aryl, alkylaryl or arylalkyl having in each case from 1 to 10 carbon atoms in the alkyl radical and from 6 to 20 carbon atoms in the aryl radical.
Compounds of the produced resins of Examples 2 to 6 were prepared, extruded and pelletized. Example 19 Film of Lmumus The plant is expected to be on stream in The secant modulus, hexane extractables and seal initiation temperatures of the films of Comparative Examples 32 to 35 were determined as described above.
CROSS-REFERENCE TO RELATED APPLICATIONS
Particularly suitable metallocenium-ion-forming compounds B are open-chain or cyclic aluminoxane compounds of the general formulae V or VI. A composition comprising a polymer blend of: Example 21 Film of Example The polymerization can be carried out in one or more stages, in a known manner in bulk, in suspension or in the gas phase, in reactors usually used for polymerizing propylene.
Referring to Table 5, the amount of hexane extractables from the films of Examplesmade respectively from the resin blends of Examplesrange from 0. R 1R 2and the bridging unit R 9 have the meaning set forth above with respect to formula I. The yield is the sum of all fractions, based on the total amount of polymer novolem to the fractionation procedure.