Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing
Reexamination Certificate
2007-09-11
2007-09-11
Rabago, Roberto (Department: 1713)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heavy metal containing
C556S051000, C556S052000, C556S054000, C502S155000, C502S167000, C526S161000, C526S172000
Reexamination Certificate
active
11503239
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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Coates Geoffrey W.
Tian Jun
Bacon & Thomas PLLC
Cornell Research Foundation Inc.
Rabago Roberto
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