Journal Article10.1021/MA00180A006
Microtacticity distribution of polypropylenes prepared with heterogeneous Ziegler-Natta catalysts
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TL;DR: L'isotacticite augmente avec la stereospecificite de l'amorceur as discussed by the authors, augmenting the amorceur with l'isotonicity.
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Abstract: L'isotacticite augmente avec la stereospecificite de l'amorceur. Proposition de nouveaux modeles pour les sites actifs
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Citations
Control of molecular weight distribution for polypropylene obtained by commercial ziegler-natta catalyst: Effect of electron donor
TL;DR: In this article, the effect of the external donor on the performance of the catalyst with different internal donors was investigated and the theoretical PDI value was calculated for a mixture of external donor systems.
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Effects of procatalyst composition on the stereospecificity of a Ziegler-Natta catalyst system†
TL;DR: In this paper, it was found that the fraction of atactic polymer formed increased with decreasing ester content in the catalyst, while the stereoregularity of the isotactic polymer fraction increased.
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Patent
Process for producing olefin polymers, olefin-polymerizing catalyst and polypropylene for biaxially oriented film produced with said catalyst
Takeshi Ebara,Koji Mizunuma,Toshio Sasaki,Kazuki Wakamatsu,Junichi Kimura,Yoichi Obata +5 more
- 28 Nov 1994
TL;DR: A process for producing an olefin polymer using a catalyst in which (A) is a solid catalyst component which includes magnesium, titanium, halogen and an electron donative compound as essential constituents; (B) is an organo-aluminum component; and (C) is at least two electron-donative compounds (α) and (β), wherein the pentad stereoregularity of a xylene insoluble fraction of a homopolyproylene is 0.0068
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Effect of isotacticity distribution on the crystallization and melting behavior of polypropylene
TL;DR: In this paper, the isotacticity distribution of three commercial isotactic polypropylenes (iPPs) was characterized using temperature-Rising elution fractionation (Tthis paper) combining with size-exclusion chromatography (SEC).
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