Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing
Patent
1989-09-07
1991-05-21
Prescott, Arthur C.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heavy metal containing
556 9, 556 11, 502117, C07F 702
Patent
active
050177141
ABSTRACT:
Silicon-bridged transition metal compounds and their use as .alpha.-olefin polymerization catalysts are disclosed. A chiral silicon-bridged metallocene catalyst polymerizes .alpha.-olefins to high isotacity with a minimum of inversions at high rates of catalyst activity. The catalyst is easily made in high yields and readily separated from atactic meso forms.
REFERENCES:
patent: 2956045 (1960-10-01), Merker
patent: 4522982 (1985-06-01), Ewen
patent: 4530914 (1985-06-01), Ewen et al.
patent: 4769510 (1988-09-01), Kaminsky
patent: 4794096 (1988-12-01), Ewen
patent: 4931417 (1990-06-01), Miya et al.
Cotton et al., Advanced Inorganic Chemistry, New York; John Wiley & Sons, Inc. 1980.
Collman et al., Principles and Application of Organotransition Metal Chemistry, Mill Valley, CA; University Science Books, 1980.
W. Kaminsky, H. Sinn (Eds.) Transition Metals and Organometallics as Catalysts for Olefin Polymerization, Sep. 21-24, 1987, pp. 281-289, Printed in Germany.
John A. Ewen et al., "Propylene Polymerizations with Group 4 Metallocene/Alumoxane Systems", Hamburg International Symposium, Sep. 21-24, 1987, Given out by J. A. Ewen.
Abstract-Stereorigid Metallocenes: Correlation Between Structure and Behaviour in 1-Olefin-Polymerization by A. Antberg et al., SW Regional ACS Meeting, Corpus Christi, Texas, 11/30-12/2/99, (#48).
Abstracts of Papers by H. H. Brintzinger (INOR 241) at ACS Meeting in Denver, Colo., Apr. 5-10, 1987.
Transition Metals and Organometallics as Catalysts for Olefin Polymerization--W. Kaminsky and H. Sinn (Eds.), Proceedings of an International Symposium, Hamburg, (FRG), Sep. 21-24, 1987.
Exxon Chemical Patents Inc.
Kurtzman M. B.
Prescott Arthur C.
LandOfFree
Silicon-bridged transition metal compounds does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Silicon-bridged transition metal compounds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Silicon-bridged transition metal compounds will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-239724