Method for preparing phenyl benzoate ultraviolet absorber through ester exchange
The invention provides a method for preparing a phenyl benzoate ultraviolet absorber through ester exchange. The method comprises the steps that at least one hindered phenol in the formula I reacts with alkali at 100-140 DEG C to obtain hindered phenol salt, then the hindered phenol salt reacts with...
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Hauptverfasser: | , , , , , , , , , |
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Format: | Patent |
Sprache: | chi ; eng |
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