Process for the preparation of ligands for metallogene...

Details Process for the preparation of ligands for metallogene... Process for the preparation of ligands for metallogene...

2005-01-18

2005-01-18

Choi, Ling-Siu (Department: 1713)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

C502S103000, C526S160000, C526S943000, C526S127000, C526S132000, C526S133000, C526S134000, C526S351000, C526S348000, C556S053000

Reexamination Certificate

active

06844288

ABSTRACT:
A process for the preparation of ligands for metallocene catalysts used in the production of amorphous polymers of alpha-olefins having high molecular weight and narrow molecular weight distributions, in which the isotactic sequences are more abundant than the syndiotactic ones.

REFERENCES:
patent: 4522982 (1985-06-01), Ewen
patent: 5053478 (1991-10-01), Moore et al.
patent: 5504169 (1996-04-01), Canich
patent: 5516848 (1996-05-01), Canich et al.
patent: 5539056 (1996-07-01), Yang et al.
patent: 5672668 (1997-09-01), Winter et al.
patent: 5693836 (1997-12-01), Winter et al.
patent: 5789332 (1998-08-01), Kutschera et al.
patent: 6028152 (2000-02-01), Winter et al.
patent: 6197902 (2001-03-01), Dolle et al.
patent: 6225425 (2001-05-01), Dolle et al.
patent: 0399347 (1990-11-01), None
patent: 0584609 (1994-03-01), None
patent: 0604917 (1994-07-01), None
patent: 0633272 (1995-01-01), None
patent: 0693506 (1996-01-01), None
patent: 0722949 (1996-07-01), None
patent: 0722950 (1996-07-01), None
patent: 9200333 (1992-01-01), None
patent: 9500562 (1995-01-01), None
patent: 9525757 (1995-09-01), None
patent: 9526369 (1995-10-01), None
patent: 9532995 (1995-12-01), None
patent: WO 9622995 (1996-08-01), None
patent: 9622995 (1996-08-01), None
patent: 9623838 (1996-08-01), None
patent: 9843931 (1998-10-01), None
patent: 9921896 (1999-05-01), None
patent: 9921899 (1999-05-01), None
Nifant'ev et al., “General Synthetic Route to Substituted Bis(cyclopentadienyl)- and Bis(indenyl)methanes”, Synthesis, p. 469-474 (1997).*
James C. Randall, “A Review of High Resolution Liquid13Carbon Nuclear Magnetic Resonance Characterizations of Ethylene-Based Polymers”, Macromol. Chem. Phys., C29(2&3), (1989) 201-317.
C. J. Carman et al., “Monomer Sequence Distribution in Ethylene-Propylene Rubber Measured by13C NMR 3. Use of Reaction Probability Model”, Macromolecules, vol. 10, No. 3, (1977) 536-44.
Ilya E. Nifantev et al., “General synthetic route to substituted bis(cyclopentadienyl)- and bis(indenyl)methanes”, Synthesis (1997), (4), 469-74.

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