Catalysts for the polymerization of unsaturated compounds

Details Catalysts for the polymerization of unsaturated compounds Catalysts for the polymerization of unsaturated compounds

2007-09-25

2007-09-25

Saeed, Kamal A. (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C549S074000, C502S117000, C526S161000

Reexamination Certificate

active

10959212

ABSTRACT:
Bisimine compounds of the formula (I)where the symbols have the following meanings:A is a nonmetal selected from among N, S, O and P,R1is a radical of the formula NR5R6,R2is a radical of the formula NR5R6or NR7R8, alkyl, aryl or cycloalkyl,R5and R6together with the N atom form a 5-, 6- or 7-membered ring in which one or more of the —CH— or —CH2— groups may be replaced by suitable heteroatom groups and which may be saturated or unsaturated and unsubstituted or substituted or be fused with further carbacyclic or heterocarbacyclic 5- or 6-membered rings which may in turn be saturated or unsaturated and substituted or unsubstituted, andR7and R8are, independently of one another, alkyl, aryl or cycloalkyl radicals, andR3, R4are, independently of one another, H or alkyl, aryl or cycloalkyl radicals, andn is 1 or 2,are used to prepare bisimidinato complexes which can be used in the polymerization of unsaturated compounds.

REFERENCES:
patent: 7053020 (2006-05-01), De Boer et al.

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