A method of rearrangement of polyphenylene ether and a method of rearranging polyphenylene ether

摘要

The present invention relates to a rearrangement process of a polyphenylene ether and a phenolic compound by reacting the polyphenylene ether (At this time, a specific phenol compound is used) in the solution. Rearrangement reaction can be carried out in toluene or a toluene / alcohol blend. The reaction can be carried out in the presence or absence of a catalyst.; A polyphenylene ether with a phenol compound by reacting a polyphenylene ether grown thermal loading method in the solution,; Polyphenylene ether is reacted with a phenolic compound of formula (III) (wherein the phenolic rings are disubstituted with methyl groups or ethyl groups in the ortho-position, the group X is separated from the phenolic ring through at least two carbon atoms, the phenolic compound has a 400g / mole or less, and preferably a molecular weight of less than 300g / mol);; As promoters tree (C ₈ -C ₁₀ alkyl) methyl ammonium chloride as phase transfer with a mixture of methanol of 1 to 30% by volume in the presence of a catalyst in toluene and methanol, or toluene and the rearrangement in the same;; Using a diphenoquinone, preferably of 3,3 ', 5,5'-tetramethyl-4,4'-diphenoquinone as a catalyst;; The molar concentration of the phenolic compound in a reaction solution using a method of selecting between 0.9 to 1.1 times the molar quantity of monomeric units in the polyphenylene ether,; 90% or more phenolic compounds may be incorporated in the polyphenylene.