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Method for producing alkylation catalyst, method for ortho-alkylation of hydroxy aromatic compound and related composition
Method for producing alkylation catalyst, method for ortho-alkylation of hydroxy aromatic compound and related composition
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机译:烷基化催化剂的制造方法,羟基芳香族化合物的正烷基化方法及相关组合物
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摘要
A method for preparing a polyphenylene ether resin is described. In one embodiment the method comprises: preparing a magnesium-based alkylation catalyst, by dry-blending at least one filler with a magnesium reagent which yields magnesium oxide upon calcination; calcining the alkylation catalyst; reacting a phenolic compound and an alkyl alcohol in the presence of the alkylation catalyst, to form a 2,6-alkyl-disubstituted phenolic compound; and oxidatively coupling the 2,6-alkyl-disubstituted phenolic compound in the presence of a suitable polymerization catalyst, to form the polyphenylene ether resin.
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