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Ethylene polymerization using a zirc...

Young, Andrea Elise.

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Ethylene polymerization using a zirconium amidinate-supported catalyst.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Ethylene polymerization using a zirconium amidinate-supported catalyst./
作者:	Young, Andrea Elise.
面頁冊數:	55 p.
附註:	Source: Masters Abstracts International, Volume: 42-06, page: 2214.
Contained By:	Masters Abstracts International42-06.
標題:	Chemistry, Polymer. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1419477
ISBN:	0496242474

Ethylene polymerization using a zirconium amidinate-supported catalyst.
Young, Andrea Elise.

Ethylene polymerization using a zirconium amidinate-supported catalyst. - 55 p.

Source: Masters Abstracts International, Volume: 42-06, page: 2214.

Thesis (M.S.)--University of Maryland, College Park, 2004.

A series of W. R. Grace Davison IOLA(TM), methylaluminoxane-silica (MAO/Silica) and MAO/IOLA support materials were used to activate and immobilize a zirconium amidinate single site catalyst of the formula Cp*ZrMe2[tBuNC(Me)NCEt]. Ethylene homo-polymerizations and co-polymerizations with 1-hexene were conducted in heptane and compared. The catalysts activity was investigated under varying conditions such as pre-catalyst loading, pressure, temperature, co-monomer incorporation and additives. The catalyst supported on the MAO/IOLA B support material proved to be more active than the IOLA and m-IOLA support activators, and the MAO/Silica and MAO/IOLA A support materials. A difference in activity of as much as 1015 gPE/gcat.h-1 was noted. The catalyst sensitivity to varying ethylene polymerization conditions such as temperature and pressure were investigated for the MAO/IOLA B supported catalyst. Catalyst activities of more than 2100 gPE/gcat.h -1 were achieved. Homo-polymer and co-polymer samples were characterized and compared with respect to their melting temperature, molecular weights and polydispersities.

ISBN: 0496242474Subjects--Topical Terms:

1018428
Chemistry, Polymer.

Ethylene polymerization using a zirconium amidinate-supported catalyst.
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300 $a 55 p.
500 $a Source: Masters Abstracts International, Volume: 42-06, page: 2214.
500 $a Chair: Lawrence R. Sita.
502 $a Thesis (M.S.)--University of Maryland, College Park, 2004.
520 $a A series of W. R. Grace Davison IOLA(TM), methylaluminoxane-silica (MAO/Silica) and MAO/IOLA support materials were used to activate and immobilize a zirconium amidinate single site catalyst of the formula Cp*ZrMe2[tBuNC(Me)NCEt]. Ethylene homo-polymerizations and co-polymerizations with 1-hexene were conducted in heptane and compared. The catalysts activity was investigated under varying conditions such as pre-catalyst loading, pressure, temperature, co-monomer incorporation and additives. The catalyst supported on the MAO/IOLA B support material proved to be more active than the IOLA and m-IOLA support activators, and the MAO/Silica and MAO/IOLA A support materials. A difference in activity of as much as 1015 gPE/gcat.h-1 was noted. The catalyst sensitivity to varying ethylene polymerization conditions such as temperature and pressure were investigated for the MAO/IOLA B supported catalyst. Catalyst activities of more than 2100 gPE/gcat.h -1 were achieved. Homo-polymer and co-polymer samples were characterized and compared with respect to their melting temperature, molecular weights and polydispersities.
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