Industrial Liquid Pool Propene Polymerization With Metallocene/Mao/Silica Catalyst Systems
نویسندگان
چکیده
منابع مشابه
Propene-cycloolefin polymerization
Highly active metallocenes and other single site catalysts have opened up the possibility of polymerizing cycloolefins such as norbornene (N) or of copolymerizing them with ethene (E) or propene (P). The polymers obtained show exciting structures and properties. E-N copolymers are industrially produced materials, with variable and high glass transitions depending on the wide range of their micr...
متن کاملQuasi-Living Polymerization of Propene with an Isotactic-Specific Zirconocene Catalyst.
Propene polymerization with isotactic (iso)-specific C₂-symmetric rac-Me₂Si(2-Me-Benz(e)-Ind)₂ZrCl₂ (1) and rac-Me₂Si(2-Me-4-Ph-1-Ind)₂ZrCl₂ (2) were conducted under various conditions for achieving iso-specific living polymerization of propene. When Complex 1 was activated with trialkylaluminum-free modified methylaluminoxane (dMMAO) at -40 °C, the number-average molecular weight (Mn) linearly...
متن کاملPolymerization of Propylene with [t-BuNSiMe2Ind]TiMe2-MAO Catalyst Systems
ansa-Indenylamidodimethyltitanium complex ([t-BuNSiMe2Ind]TiMe2: 1) was synthesized by one-pot reactions starting from the ligand, MeLi and TiCl4. The structure of 1 was determined by X-ray crystallography and the results obtained revealed that the indenyl ligand coordinate to titanium in an η-tendency. Propylene polymerization was conducted with 1 in toluene or heptane as solvent at 0 ̊C in th...
متن کاملpropene-cycloolefin polymerization
highly active metallocenes and other single site catalysts have opened up the possibility of polymerizing cycloolefins such as norbornene (n) or of copolymerizing them with ethene (e) or propene (p). the polymers obtained show exciting structures and properties. e-n copolymers are industrially produced materials, with variable and high glass transitions depending on the wide range of their micr...
متن کاملPOLYMERIZATION OF PROPENE WITH BuNSiMe2C5Me4TiMe2: EFFECTS OF TRIALKYLALUMINIUMS AS ADDITIVES
ABSTRACT. Propene was polymerized at 0 C with tBuNSiMe2C5Me4TiMe2/MAO. Kinetic features and other parameters indicated quasi-living polymerization. Effects of various trialkylaluminiums as additives have been investigated; it was found that compounds with more bulky groups like iBu3Al, Oct3Al increased the activities significantly whereas Me3Al and Et3Al reduced the activities of the catalyst s...
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ژورنال
عنوان ژورنال: Microscopy and Microanalysis
سال: 2003
ISSN: 1431-9276,1435-8115
DOI: 10.1017/s1431927603442220