Propylene polymerisations with novel heterogeneous combination metallocene catalyst systems
Propylene was polymerised with novel combination metallocene catalyst systems prepared by an emulsion-based heterogenisation method in liquid monomer conditions. The catalyst combinations investigated were rac-dimethylsilanylbis(2-methyl-4-phenyl-1-indenyl)zirconium dichloride/rac-[ethylenebis(2-(te...
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| Veröffentlicht in: | Polymer (Guilford) 2007-03, Vol.48 (7), p.1893-1902 |
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| container_title | Polymer (Guilford) |
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| creator | Tynys, Antti Saarinen, Tapio Bartke, Michael Löfgren, Barbro |
| description | Propylene was polymerised with novel combination metallocene catalyst systems prepared by an emulsion-based heterogenisation method in liquid monomer conditions. The catalyst combinations investigated were rac-dimethylsilanylbis(2-methyl-4-phenyl-1-indenyl)zirconium dichloride/rac-[ethylenebis(2-(tert-butyldimethylsiloxy)indenyl)]zirconium dichloride/methylaluminoxane (MAO) (1+2) and rac-dimethylsilanylbis(2-methyl-4-phenyl-1-indenyl)zirconium dichloride/rac-dimethylsilanylbis(2-isopropyl-4-[3,5-dimethylphenyl]indenyl)zirconium dichloride/MAO (1+3). The effects of polymerisation temperature and hydrogen on catalyst performance and polymer properties, as well as copolymerisation with hexene and ethylene were investigated. Depending on the polymerisation conditions, Mw of polypropylene varied from 144 to 286kg/mol for 1+2 and from 200 to 390kg/mol for 1+3. Combination 1+2 produced broader molecular weight distribution (MWD) than 1+3, and a bimodal MWD with clearly separated low- and high-Mw polymer fractions was observed with 1+2. The two catalyst systems showed similar hydrogen and hexene responses. Each metallocene precursor showed individual response towards the polymerisation conditions, especially polymerisation temperature, suggesting that interaction between the catalyst active sites was negligible in the studied systems. |
| doi_str_mv | 10.1016/j.polymer.2007.02.020 |
| format | Article |
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The catalyst combinations investigated were rac-dimethylsilanylbis(2-methyl-4-phenyl-1-indenyl)zirconium dichloride/rac-[ethylenebis(2-(tert-butyldimethylsiloxy)indenyl)]zirconium dichloride/methylaluminoxane (MAO) (1+2) and rac-dimethylsilanylbis(2-methyl-4-phenyl-1-indenyl)zirconium dichloride/rac-dimethylsilanylbis(2-isopropyl-4-[3,5-dimethylphenyl]indenyl)zirconium dichloride/MAO (1+3). The effects of polymerisation temperature and hydrogen on catalyst performance and polymer properties, as well as copolymerisation with hexene and ethylene were investigated. Depending on the polymerisation conditions, Mw of polypropylene varied from 144 to 286kg/mol for 1+2 and from 200 to 390kg/mol for 1+3. Combination 1+2 produced broader molecular weight distribution (MWD) than 1+3, and a bimodal MWD with clearly separated low- and high-Mw polymer fractions was observed with 1+2. The two catalyst systems showed similar hydrogen and hexene responses. Each metallocene precursor showed individual response towards the polymerisation conditions, especially polymerisation temperature, suggesting that interaction between the catalyst active sites was negligible in the studied systems.</description><identifier>ISSN: 0032-3861</identifier><identifier>EISSN: 1873-2291</identifier><identifier>DOI: 10.1016/j.polymer.2007.02.020</identifier><identifier>CODEN: POLMAG</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Applied sciences ; Combination catalyst ; Exact sciences and technology ; Metallocene catalyst ; Organic polymers ; Physicochemistry of polymers ; Polymerization ; Polypropylene ; Preparation, kinetics, thermodynamics, mechanism and catalysts</subject><ispartof>Polymer (Guilford), 2007-03, Vol.48 (7), p.1893-1902</ispartof><rights>2007 Elsevier Ltd</rights><rights>2007 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c370t-a5ff1e0f5712b6f4c587a022b750adb84390f908ba328995f6e412f8b393506e3</citedby><cites>FETCH-LOGICAL-c370t-a5ff1e0f5712b6f4c587a022b750adb84390f908ba328995f6e412f8b393506e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0032386107001632$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27903,27904,65309</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=18617268$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Tynys, Antti</creatorcontrib><creatorcontrib>Saarinen, Tapio</creatorcontrib><creatorcontrib>Bartke, Michael</creatorcontrib><creatorcontrib>Löfgren, Barbro</creatorcontrib><title>Propylene polymerisations with novel heterogeneous combination metallocene catalyst systems</title><title>Polymer (Guilford)</title><description>Propylene was polymerised with novel combination metallocene catalyst systems prepared by an emulsion-based heterogenisation method in liquid monomer conditions. The catalyst combinations investigated were rac-dimethylsilanylbis(2-methyl-4-phenyl-1-indenyl)zirconium dichloride/rac-[ethylenebis(2-(tert-butyldimethylsiloxy)indenyl)]zirconium dichloride/methylaluminoxane (MAO) (1+2) and rac-dimethylsilanylbis(2-methyl-4-phenyl-1-indenyl)zirconium dichloride/rac-dimethylsilanylbis(2-isopropyl-4-[3,5-dimethylphenyl]indenyl)zirconium dichloride/MAO (1+3). The effects of polymerisation temperature and hydrogen on catalyst performance and polymer properties, as well as copolymerisation with hexene and ethylene were investigated. Depending on the polymerisation conditions, Mw of polypropylene varied from 144 to 286kg/mol for 1+2 and from 200 to 390kg/mol for 1+3. Combination 1+2 produced broader molecular weight distribution (MWD) than 1+3, and a bimodal MWD with clearly separated low- and high-Mw polymer fractions was observed with 1+2. The two catalyst systems showed similar hydrogen and hexene responses. Each metallocene precursor showed individual response towards the polymerisation conditions, especially polymerisation temperature, suggesting that interaction between the catalyst active sites was negligible in the studied systems.</description><subject>Applied sciences</subject><subject>Combination catalyst</subject><subject>Exact sciences and technology</subject><subject>Metallocene catalyst</subject><subject>Organic polymers</subject><subject>Physicochemistry of polymers</subject><subject>Polymerization</subject><subject>Polypropylene</subject><subject>Preparation, kinetics, thermodynamics, mechanism and catalysts</subject><issn>0032-3861</issn><issn>1873-2291</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNqFkE1LAzEQhoMoWKs_QdiL3rZOkmZ3cxIpfkFBD3ryELLpxKZkNzVZlf57U1vwKAwzc3jmnZmXkHMKEwq0ulpN1sFvOowTBlBPgOWAAzKiTc1LxiQ9JCMAzkreVPSYnKS0AgAm2HRE3p5jWG889ljsRVzSgwt9Kr7dsCz68IW-WOKAMbxnKnymwoSudf0vVXQ4aO-D2QoYnftNGoqUE3bplBxZ7ROe7euYvN7dvsweyvnT_ePsZl4aXsNQamEtRbCipqyt7NSIptbAWFsL0Iu2mXIJVkLTas4aKYWtcEqZbVouuYAK-Zhc7nTXMXx8YhpU55JB7_XvvYpJyRkImUGxA00MKUW0ah1dp-NGUVBbK9VK7V1QWysVsByQ5y72C3Qy2tuoe-PS33C2tWZVk7nrHYf52y-XVZJx2BtcuIhmUIvg_tn0A3zLjzA</recordid><startdate>20070323</startdate><enddate>20070323</enddate><creator>Tynys, Antti</creator><creator>Saarinen, Tapio</creator><creator>Bartke, Michael</creator><creator>Löfgren, Barbro</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>JG9</scope></search><sort><creationdate>20070323</creationdate><title>Propylene polymerisations with novel heterogeneous combination metallocene catalyst systems</title><author>Tynys, Antti ; Saarinen, Tapio ; Bartke, Michael ; Löfgren, Barbro</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c370t-a5ff1e0f5712b6f4c587a022b750adb84390f908ba328995f6e412f8b393506e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Applied sciences</topic><topic>Combination catalyst</topic><topic>Exact sciences and technology</topic><topic>Metallocene catalyst</topic><topic>Organic polymers</topic><topic>Physicochemistry of polymers</topic><topic>Polymerization</topic><topic>Polypropylene</topic><topic>Preparation, kinetics, thermodynamics, mechanism and catalysts</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tynys, Antti</creatorcontrib><creatorcontrib>Saarinen, Tapio</creatorcontrib><creatorcontrib>Bartke, Michael</creatorcontrib><creatorcontrib>Löfgren, Barbro</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><jtitle>Polymer (Guilford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tynys, Antti</au><au>Saarinen, Tapio</au><au>Bartke, Michael</au><au>Löfgren, Barbro</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Propylene polymerisations with novel heterogeneous combination metallocene catalyst systems</atitle><jtitle>Polymer (Guilford)</jtitle><date>2007-03-23</date><risdate>2007</risdate><volume>48</volume><issue>7</issue><spage>1893</spage><epage>1902</epage><pages>1893-1902</pages><issn>0032-3861</issn><eissn>1873-2291</eissn><coden>POLMAG</coden><abstract>Propylene was polymerised with novel combination metallocene catalyst systems prepared by an emulsion-based heterogenisation method in liquid monomer conditions. The catalyst combinations investigated were rac-dimethylsilanylbis(2-methyl-4-phenyl-1-indenyl)zirconium dichloride/rac-[ethylenebis(2-(tert-butyldimethylsiloxy)indenyl)]zirconium dichloride/methylaluminoxane (MAO) (1+2) and rac-dimethylsilanylbis(2-methyl-4-phenyl-1-indenyl)zirconium dichloride/rac-dimethylsilanylbis(2-isopropyl-4-[3,5-dimethylphenyl]indenyl)zirconium dichloride/MAO (1+3). The effects of polymerisation temperature and hydrogen on catalyst performance and polymer properties, as well as copolymerisation with hexene and ethylene were investigated. Depending on the polymerisation conditions, Mw of polypropylene varied from 144 to 286kg/mol for 1+2 and from 200 to 390kg/mol for 1+3. Combination 1+2 produced broader molecular weight distribution (MWD) than 1+3, and a bimodal MWD with clearly separated low- and high-Mw polymer fractions was observed with 1+2. The two catalyst systems showed similar hydrogen and hexene responses. Each metallocene precursor showed individual response towards the polymerisation conditions, especially polymerisation temperature, suggesting that interaction between the catalyst active sites was negligible in the studied systems.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.polymer.2007.02.020</doi><tpages>10</tpages></addata></record> |
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| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences Combination catalyst Exact sciences and technology Metallocene catalyst Organic polymers Physicochemistry of polymers Polymerization Polypropylene Preparation, kinetics, thermodynamics, mechanism and catalysts |
| title | Propylene polymerisations with novel heterogeneous combination metallocene catalyst systems |
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