The oxidative coupling polymerization of 2,6-dimethylphenol (DMP) catalysed by copper(II) complexes of N-methylimidazole in toluene/iso-propanol (13/2v/v) or 1,2-dichlorobenzene/methanol (ODCB/MeOH) (13/2 v/v) was investigated. EPR spectra of these complexes indicated that the complex had a mononucl
Oxidative polymerization of 2,6-dimethylphenol catalysed by insoluble polymer copper complexes
β Scribed by H. Nishide; Y. Suzuki; E. Tsuchida
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 331 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0014-3057
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β¦ Synopsis
Catalysis by insoluble polymer Cu complexes was studied for the oxidative polymerization of 2,6-dimethylphenol. The polymerization was heterogeneously catalysed by the insoluble complex. The catalyst was readily recovered by filtration and could be re-used. Compared with the homogeneous system, the catalytic activity and the molecular weight of the produced polymer were lower for the insoluble polymer Cu complex because of steric hindrance, low flexibility of the ligand part and low concentration of the effective copper ion.
π SIMILAR VOLUMES
The oxidative coupling reaction of 2,6dimethylphenol (DMP) with H 2 O 2 catalyzed by four copper(II) complexes was investigated in Tris-HNO 3 buffer solution at 25 C. The kinetics of formation of diphenoquinone (DPQ, 4-(3,5-dimethyl-4-oxo-2,5-cyclohexadienylidene)-2,6-dimethyl-2,5-cyclohexadienone)
## Abstract Polyphenylene oxide (PPO) was prepared via oxidative coupling polymerization of 2,6βdimethylphenol (DMP) catalyzed by copper salt. The ligand was a novel series of random copolymers (PSVP) of styrene and 4βvinylpyridine prepared by reversible additionβfragmentation chain transfer (RAFT)