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US08841475B2 Method for producing alkoxylated phosphoric acid triesters 有权
烷氧基化磷酸三酯的制备方法

Method for producing alkoxylated phosphoric acid triesters
Abstract:
The invention relates to a method for producing phosphoric acid triesters of formula (I). According to said method, phosphoric acid or a phosphoric acid derivative selected from orthophosphoric acid, tetraphosphoric decaoxide and polyphosphoric acid is reacted with alkoxylated alcohols of formulae (II) R1—(OA1)x—OH, (III) R2—(OA2)y—OH, and (IV) R3—(OA3)z—OH, in the molar ratio phosphoric acid or phosphoric acid derivative to alkoxylated alcohol of 1:2.5 to 1:3.3, at between 200 and 240° C.
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