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Granulated product and a method of manufacturing the p-hydroxybenzoic acid or p-hydroxybenzoic acid ester
Granulated product and a method of manufacturing the p-hydroxybenzoic acid or p-hydroxybenzoic acid ester
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机译:粒状产物和对羟基苯甲酸或对羟基苯甲酸酯的制造方法
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摘要
Granular product of parahydroxybenzoic acid or its ester which exhibits well suppressed dusting and caking tendency and a process for preparing the product are provided. The granular product of parahydroxybenzoic acid or its ester according to the instant invention has an average particle size of equal to or more than 150 mu m and a hardness of 10-3000 g. The granular product of the invention can be prepared by dry compressing powdery parahydroxybenzoic acid or its ester to give compressed material, pulverizing and classifying the material.
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