## Abstract Polystyrene macromonomers, fitted with a norbornenyl unsaturation in α position, have been obtained from a norbornene based carbanionic initiator that has been purposely designed to this end. The advantages of this synthetic scheme over that based on the deactivation of living PS chains
Synthesis of α- and ω-norbornenyl-polybutadiene macromonomers and their ring-opening metathesis polymerization
✍ Scribed by Valérie Héroguez; Jean-Luc Six; Yves Gnanou; Michel Fontanille
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 626 KB
- Volume
- 199
- Category
- Article
- ISSN
- 1022-1352
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✦ Synopsis
Norbornene-ended polybutadiene (PBu) macromonomers have been prepared via two different routes: a-norbornenyl-polybutadiene was derived from a norbornene-containing carbanionic initiator, whereas w-norbornenyl samples were obtained through deactivation of living polybutadienyl anions by a norbornene-based deactivator. Out of four alkylidene complexes tried, the molybdenum alkylidene complex that contains two alkoxide ligands was found to be the most suitable initiator for the ring-opening metathesis polymerization of these macromonomers.
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Poly(-caprolactone) (PCL) macromonomers capped by a polymerizable norbornene end-group have been synthesized and (co)polymerized by ring-opening metathesis with formation of graft copolymers and polymacromonomers. ␣-Norbornenyl PCL macromonomers have been synthesized by ring opening polymerization (
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## Abstract Poly(oxy‐2,6‐dimethyl‐1,4‐phenylene) samples with bicyclic olefin end groups were obtained by esterification of the hydroxyl end group of the poly(phenylene oxide) with bicyclo[2.2.1]hept‐5‐ene‐2‐carbonyl chloride. Mixtures of these macromonomers with bicyclo[2.2.1]hept‐5‐ene‐2‐carboxyl