HYPERBRANCHED CARBOSILANE OXAZOLINE-MACROMONOMERS - POLYMERIZATION AND COUPLING TO A TRIMESIC ACID CORE

Attachment of oxazoline-based hyperbranched macromonomers to a trimesi c acid core affording trimers of the hyperbranched fragments as well a s polymerization of the oxazoline groups is reported. Polymerization a nd copolymerization with 2-phenyl-1,3-oxazoline were investigated for two macromonomers ((M) over bar(w) = 1 700 and 8 000, respectively), r esulting in hyperbranched analogs of combburst polymers. Homopolymeriz ation of the macromonomers yielded a degree of polymerization DP appro ximate to 15. Hyperbranched trimers and the polyethyleneimines with ap olar hyperbranched carbosilane side-chains form superstructures in sol ution and in bulk.