Claims
- 1. A metal catalyst combination for free-radical copolymerization of ethylenically unsaturated monomers, the metal catalyst combination comprising:
- a Cobalt (II) complex of a nitrilomethylidyne dipyrrole and a ligand selected from amine, pyridine, or triphenylphosphine, where the Cobalt (II) nitrilomethylidyne dipyrrole has the structure: ##STR4## where R is a diradical selected from trimethylene bis-, o-phenylenebis-, or ethylenebis-.
- 2. The metal catalyst combination for use in free-radical copolymerization of said monomers in claim 1 where the Cobalt (II) nitrilomethylidyne dipyrrole is Cobalt (II) 2,2'-(trimethylenebis nitrilomethylidyne)dipyrrole.
- 3. The metal catalyst combination for use in free-radical copolymerization of said monomers in claim 2 where the Cobalt (II) nitrilomethylidyne dipyrrole is complexed with pyridine.
- 4. The metal catalyst combination for use in free-radical copolymerization of said monomers in claim 1 where the Cobalt (II) nitrilomethylidyne dipyrrole is Cobalt (II) 2,2'-(o-phenylenebis nitrilomethylidyne)dipyrrole.
- 5. The metal catalyst combination for use in free-radical copolymerization of said monomers in claim 4 where the Cobalt (II) nitrilomethylidyne dipyrrole is complexed with pyridine.
- 6. The metal catalyst combination for use in free-radical copolymerization of said monomers in claim 1 where the Cobalt (II) nitrilomethylidyne dipyrrole is Cobalt (II) 2,2'-(ethylenebis nitrilomethylidyne)dipyrrole.
- 7. The metal catalyst combination for use in free-radical copolymerization of said monomers in claim 6 where the Cobalt (II) nitrilomethylidyne dipyrrole is complexed with pyridine.
Parent Case Info
This is a division of application Ser. No. 865,555 filed May 21, 1986 U.S. Pat. No. 4,680,354.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4659829 |
Saussine |
Apr 1987 |
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Divisions (1)
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Number |
Date |
Country |
Parent |
865555 |
May 1986 |
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