1955
DOI: 10.1002/ange.19550671610
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Polymerisation von Äthylen und anderen Olefinen

Abstract: b ) liefert aus Athylen alle geradzahligen primaren Fettalkohole, cbenso 0). Der Vorteil von b ) gcgenuber c ) liegt in folgendem: Bei c ) sind die Reaktionsprodukte nur in der urspriinglichcn relativ flachen VerMung zu erhalten. b ) gestattet vorherige Trennung der Olefine (die leichter als bei den Alkoholen geht) und direkte Herstellung reinen Octanols, Decanols usw. oder die Vorfractionierung der Olefine etwa in C,HIs + C,HIB einerseits, andererseits. I n der Zwisohenphase der Aluminiumverbindungen kann man… Show more

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Cited by 308 publications
(205 citation statements)
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“…15,16 The polymerization by t-C 4 H 9 Li alone gives an isotactic rich polymer with broad MWD, and the M n of the polymer is much larger than the calculated value. Addition of an R 3 Al such as (n-C 4 H 9 ) 3 Al decreases the isotacticity, accompanied by an increase in syndiotacticity. With an increase in Al/Li ratio, the syndiotacticity increases and the MWD becomes narrower, and highly syndiotactic PMMAs with narrow MWD are formed at ratios of Al/Li !…”
Section: Syndiotactic-specific Living Polymerizationmentioning
confidence: 95%
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“…15,16 The polymerization by t-C 4 H 9 Li alone gives an isotactic rich polymer with broad MWD, and the M n of the polymer is much larger than the calculated value. Addition of an R 3 Al such as (n-C 4 H 9 ) 3 Al decreases the isotacticity, accompanied by an increase in syndiotacticity. With an increase in Al/Li ratio, the syndiotacticity increases and the MWD becomes narrower, and highly syndiotactic PMMAs with narrow MWD are formed at ratios of Al/Li !…”
Section: Syndiotactic-specific Living Polymerizationmentioning
confidence: 95%
“…Another important structural feature to be controlled is stereoregularity. With one preceding ®nding of stereoregular poly(vinyl ether) by Schildknecht et al 2 in 1947, the ®eld of stereospeci®c polymerization actually came into existence when Ziegler et al 3 and Natta et al 4 developed new polymerization systems which exhibited unique stereoregulating powers in ole®n polymerization. For the precise control of the structure of a polymer molecule, a combination of these two types of polymerization is desirable, ie stereospeci®c living polymerization.…”
Section: Introductionmentioning
confidence: 98%
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“…The discovery of the olefin polymerization catalysts achieved by Ziegler and Natta [1][2][3][4][5] in the 1950 th was a worldwide breakthrough. This discovery has allowed the introduction of plastics in everyday life.…”
Section: Introductionmentioning
confidence: 99%