Metallocene preparation and use

Details Metallocene preparation and use Metallocene preparation and use

1997-03-07

1998-06-23

Nagumo, Mark

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526160, 526943, 526114, 526119, C08F 4642

Patent

active

057706638

ABSTRACT:
Double bound metallocenes, i.e. metallocenes having a cyclopentadienyl-containing radical that is bound to a transition metal both by a pi bond and by a sigma carbon bond of a substituent of that same cyclopentadienyl-containing radical can be prepared by reducing metallocenes having a cyclopentadienyl-containing radical having at least one an unsaturated substituent. Also a process for producing polymers comprising contacting at least one olefinic monomer under suitable polymerization conditions with such double bound metallocenes.

REFERENCES:
patent: 4808561 (1989-02-01), Welborn, Jr.
patent: 5627117 (1997-05-01), Mukaiyama et al.
Coleman, JP et al, "Principles and Applications of Organotransition Metal Chemistry," pp. 168-169, University Science Books, Mill Valley CA, 1987.

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