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METHOD FOR PREPARING HYDROXY CARBOXYLIC ACID OR DIMER THEREOF, AND METHOD FOR PREPARING amp;alpha;, amp;beta;-UNSATURATED CARBOXYLIC ACID
METHOD FOR PREPARING HYDROXY CARBOXYLIC ACID OR DIMER THEREOF, AND METHOD FOR PREPARING amp;alpha;, amp;beta;-UNSATURATED CARBOXYLIC ACID
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机译:制备羟基羧酸或其二聚体的方法,以及制备α,β-不饱和羧酸的方法
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摘要
He present invention relates to a method for preparing hydroxy carboxylic acid or a dimer thereof from a raw material including hydroxy carboxylic acid salt, and to a method for preparing α, β-unsaturated carboxylic acid by using the hydroxy carboxylic acid or the dimer thereof prepared by the method. The preparation method comprises the steps of: preparing a hydroxy carboxylic acid salt-containing raw material; reacting the hydroxy carboxylic acid salt-containing raw material with an inorganic acid in the presence of non-amine or non-alcohol organic solvent, and generating a hydroxy carboxylic acid-containing non-aqueous solution and inorganic acid sa and removing the inorganic acid.;COPYRIGHT KIPO 2015
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