Bis (salicylaldiminato) titanium complex catalysts, highly...

Details Bis (salicylaldiminato) titanium complex catalysts, highly... Bis (salicylaldiminato) titanium complex catalysts, highly...

2006-10-10

2006-10-10

Rabago, Roberto (Department: 1713)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S172000, C526S351000, C502S155000, C502S167000

Reexamination Certificate

active

07119154

ABSTRACT:
Bis(salicylaldiminato)titanium complex with optionally substituted phenyl or cyclohexyl on nitrogen catalyzes highly syndiospecific polymerization of propylene. Syndiotactic polypropylene with defects of the type rmr having [rrrr] content greater than 0.70 and block copolymer containing block(s) of the syndiotactic polypropylene and block(s) of poly(ethylene-co-propylene) and/or poly(alpha-olefin-co-propylene) are obtained. Certain of the catalysts provide living polymerization. Living olefin polymers and olefin terminated oligomers and polymers are also products.

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