Insertion/Isomerization Polymerization of 1,5-Hexadiene:  Synthesis of Functional Propylene Copolymers and Block Copolymers

Insertion/Isomerization Polymerization of 1,5-Hexadiene:  Synthesis of Functional Propylene Copolymers and Block Copolymers

Polymerization of 1,5-hexadiene with a bis(phenoxyimine) titanium catalyst system is reported. The microstructure of the polymer contains the expected methylene-1,3-cyclopentane units as well as the unexpected 3-vinyl tetramethylene units. A mechanism for formation of this polymer is proposed. This...

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Veröffentlicht in:Journal of the American Chemical Society 2002-10, Vol.124 (39), p.11578-11579
Hauptverfasser: Hustad, Phillip D, Coates, Geoffrey W
Format: Artikel
Sprache:eng
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Zusammenfassung:Polymerization of 1,5-hexadiene with a bis(phenoxyimine) titanium catalyst system is reported. The microstructure of the polymer contains the expected methylene-1,3-cyclopentane units as well as the unexpected 3-vinyl tetramethylene units. A mechanism for formation of this polymer is proposed. This unusual reaction is also employed in the synthesis of vinyl-functional polypropylene copolymers and block copolymers with low polydispersity indices.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja0273748