Metal complex containing tridentate ligand, and...

Details Metal complex containing tridentate ligand, and... Metal complex containing tridentate ligand, and...

2011-06-07

2011-06-07

Lu, Caixia (Department: 1765)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S134000, C526S335000, C526S340200, C526S340400, C526S346000, C526S347000, C502S162000, C502S167000, C556S009000, C556S013000

Reexamination Certificate

active

07956141

ABSTRACT:
The present invention provides 1) a complex comprising a mono-anionictridentate ligand, represented by the following general formula (I); 2) a polymerization catalyst composition, comprising the complex; and 3) a cis-1,4-isoprene polymer, a cis-1,4-butadiene polymer, a cis-1,4-isoprene-styrene copolymer, a cis-1,4-butadiene-styrene copolymer, a cis-1,4-butadiene-cis-1,4-isoprene copolymer, and a cis-1,4-butadiene-cis-1,4-isoprene-styrene copolymer, each of which has high-cis-1,4 content in a micro structure and a sharp molecular-weight distribution.

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