Polymerizations of propylene with unsymmetrical (alpha-diimine)nickel(II) catalysts

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dc.contributor.authorJeon, Mko
dc.contributor.authorHan, CJko
dc.contributor.authorKim, Sang Youlko
dc.date.accessioned2013-03-07T18:46:26Z-
dc.date.available2013-03-07T18:46:26Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2006-06-
dc.identifier.citationMACROMOLECULAR RESEARCH, v.14, no.3, pp.306 - 311-
dc.identifier.issn1598-5032-
dc.identifier.urihttp://hdl.handle.net/10203/90973-
dc.description.abstractNew unsymmetrical (a-diimine)nickel(11) catalysts having different pendent groups at the ortho positions on aromatic rings were synthesized and subjected to propylene polymerizations with MAO (methylaluminoxane). Structural analyses of the resulting polypropylenes by H-1 and C-13 NMR showed that the ortho substituents on aromatic rings of (alpha-diimine)nicket(II) catalyst affected significantly the polypropylene microstructure. While C-s symmetric catalyst afforded a syndiotactic polypropylene (rr triad content=66%) due to the syndiospecific chain end control, C-s symmetric catalysts produced much less stereoregular polypropylenes (rr triads content < 50%), presumably because of collision,of the isospecific site control with the syndiospecific chain end control.-
dc.languageEnglish-
dc.publisherPOLYMER SOC KOREA-
dc.subjectSYNDIOTACTIC-SPECIFIC POLYMERIZATION-
dc.subjectALPHA-DIIMINE CATALYSTS-
dc.subjectNICKEL-BASED CATALYSTS-
dc.subjectLATE-METAL-CATALYSTS-
dc.subjectOLEFIN POLYMERIZATION-
dc.subjectETHYLENE POLYMERIZATION-
dc.subjectNEW-GENERATION-
dc.subjectCOMPLEXES-
dc.subjectPROPENE-
dc.subjectLIGANDS-
dc.titlePolymerizations of propylene with unsymmetrical (alpha-diimine)nickel(II) catalysts-
dc.typeArticle-
dc.identifier.wosid000238814000008-
dc.identifier.scopusid2-s2.0-33745847782-
dc.type.rimsART-
dc.citation.volume14-
dc.citation.issue3-
dc.citation.beginningpage306-
dc.citation.endingpage311-
dc.citation.publicationnameMACROMOLECULAR RESEARCH-
dc.identifier.doi10.1007/BF03219086-
dc.contributor.localauthorKim, Sang Youl-
dc.contributor.nonIdAuthorJeon, M-
dc.contributor.nonIdAuthorHan, CJ-
dc.type.journalArticleArticle-
dc.subject.keywordAuthor(alpha-diimine)nickel(II) catalysts-
dc.subject.keywordAuthorlate transition metal complex-
dc.subject.keywordAuthorpoly(propylene) (PP)-
dc.subject.keywordAuthortacticity-
dc.subject.keywordAuthorunsymmetrical ligands-
dc.subject.keywordPlusSYNDIOTACTIC-SPECIFIC POLYMERIZATION-
dc.subject.keywordPlusALPHA-DIIMINE CATALYSTS-
dc.subject.keywordPlusNICKEL-BASED CATALYSTS-
dc.subject.keywordPlusLATE-METAL-CATALYSTS-
dc.subject.keywordPlusOLEFIN POLYMERIZATION-
dc.subject.keywordPlusETHYLENE POLYMERIZATION-
dc.subject.keywordPlusNEW-GENERATION-
dc.subject.keywordPlusCOMPLEXES-
dc.subject.keywordPlusPROPENE-
dc.subject.keywordPlusLIGANDS-
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