ISSN:
0360-6376
Keywords:
Physics
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The halogen displacement polymerization of 2,4,6-trihalophenol with heterogeneous basic copper(II) complex is described. The corresponding poly(dihalophenylene oxides) have been obtained from 2,4,6-trichloro-, 2,4,6-tribromo-, and 2,4,6-triiodophenol with the present catalytic system. In the halophenols used, the order of reactivity was as follows; 2,4,6-trichloro- 〈 2,4,6-tribromo- 〈 2,4,6-triiodophenol. With 2,4,6-trichlorophenol as a monomer, the 2,4,6-trichlorophenoxo-copper(II) complex, which had the composition Cu(OCH3)(C6H2Cl3O) and was considered to be a reaction intermediate, was isolated. The ESR spectrum of this complex at room temperature showed a sharp peak considered to be free organic radical, in addition to the broad one based on copper(II) ion. Poly(dichlorophenylene oxide) was obtained by thermal decomposition of the phenoxo-copper(II) complex. It was concluded that the formation and decomposition of the phenoxo-copper(II) complex were intermediate steps of halogen displacement polymerization of 2,4,6-trihalogenophenol with heterogeneous basic copper(II) catalyst.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pol.1978.170160208
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