Kocen, Andrew L.; Cui, Shilin; Lin, Ting-Wei; LaPointe, Anne M.; Coates, Geoffrey W. published the artcile< Chemically Recyclable Ester-Linked Polypropylene>, Application of C9H11Br, the main research area is recyclable ester polypropylene.
Polyolefins represent the largest class of commodity materials due to their excellent material properties; however, they have limited pathways to chem. recycling and are often difficult to mech. recycle. Here we demonstrate a new catalyst for the isoselective copolymerization of propylene and butadiene capable of favoring 1,4-insertion over 1,2-insertion while maintaining good mol. weights and turnover frequencies. This isotactic propylene copolymer with main-chain unsaturation was depolymerized to a telechelic macromonomer using an olefin metathesis catalyst and 2-hydroxyethyl acrylate. After hydrogenation, the telechelic macromonomer was repolymd. to form an ester-linked polypropylene material. This polymer shows thermal and mech. properties comparable to linear low-d. polyethylene. Finally, the telechelic macromonomer could be regenerated through the depolymerization of the ester-linked polypropylene material, which allows for the chem. recycling to macromonomer. This process provides a route to transform partially unsaturated polyolefins to chem. recyclable materials with similar properties to their parent polymers.
Journal of the American Chemical Society published new progress about Aluminoxanes, Me Role: CAT (Catalyst Use), USES (Uses) (Methylaluminoxane). 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Application of C9H11Br.
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary