Modified Poly(2,6-dimethyl-1,4-phenylene ether)s Prepared by Redistribution

Abstract

DOI to the publisher's website. • The final author version and the galley proof are versions of the publication after peer review. • The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal. If the publication is distributed under the terms of Article 25fa of the Dutch Copyright Act, indicated by the "Taverne" license above, please follow below link for the End User Agreement:

Synthesis and physical properties of low‐molecular‐weight redistributed poly(2,6‐dimethyl‐1,4‐phenylene oxide) for epoxy resin

“…Low‐molecular‐weight PPO was prepared when bisphenols were brought into a reaction with regular PPO in the presence of a suitable initiator 21, 22, 25–27. On the basis of the free‐radical redistribution reaction, BPO was one of the effective initiators reported by White and others 23, 29.…”

“…Redistribution (depolymerization) is an elegant method for obtaining low‐molecular‐weight PPO with a phenolic tail‐end group 20. Most of the previous redistribution studies of PPO have emphasized the understanding of the redistribution mechanism and the screening of potential initiators and phenols 21–27. Few researchers have studied the effects of low‐molecular‐weight redistributed poly(2,6‐dimethyl‐1,4‐phenylene oxide) (rPPO) with a terminal phenolic group on the physical properties of the epoxy network.…”

Selective C–C Coupling Reaction of Dimethylphenol to Tetramethyldiphenoquinone Using Molecular Oxygen Catalyzed by Cu Complexes Immobilized in Nanospaces of Structurally-Ordered Materials

“…The oxidative C–C coupling reaction of 2,6-dimethylphenol (DMP) has attracted interest as a synthetic method for 3,3',5,5'-tetramethyldiphenoquinone (DPQ), which is a useful building block of aryl epoxy resins [ 1 ] and acceptor-doped polymers [ 2 ], and an activator for redistribution of poly(2,6-dimethyl phenylene ether) (PPE) [ 3 ]. Traditionally, the oxidative C–C coupling of DMP to DPQ has been carried out using excess amounts of stoichiometric metal oxidants such as Mn(OAc) 3 [ 4 ], FeCl 3 ·6H 2 O [ 5 ], Co(OAc) 3 [ 6 ], and Ph 3 Bi(OAc) 2 [ 7 ].…”

Synthesis and characterization of low‐molecular‐weight poly(2,6‐dimethyl‐1,4‐phenylene oxide) in water

“…9,10 The phenolic derivatives can be either DMP, 11 3,3 0 ,5,5 0 -tetramethyl-4,4 0 -diphenoquinone (DPQ), 11 or tetramethyl bisphenol-A in the presence of dimethyl-aminopyridine. 9,10 The phenolic derivatives can be either DMP, 11 3,3 0 ,5,5 0 -tetramethyl-4,4 0 -diphenoquinone (DPQ), 11 or tetramethyl bisphenol-A in the presence of dimethyl-aminopyridine.…”