发明公开
- 专利标题： GRANULE OF PARAHYDROXYBENZOIC ACID OR PARAHYDROXYBENZOIC ESTER AND PROCESS FOR PRODUCING THE SAME
- 专利标题（中）： 玉米淀粉酵母素衍生物对苯二甲酸苄酯
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申请号： EP02720482.5申请日： 2002-04-18
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公开(公告)号： EP1380563A1公开(公告)日： 2004-01-14
- 发明人: UENO, Ryuzo , KITAYAMA, Masaya , IZUMICHI, Nobutaka , KITTAKA, Masaharu
- 申请人： KABUSHIKI KAISHA UENO SEIYAKU OYO KENKYUJO
- 申请人地址： 4-8, 2-chome, Koraibashi, Chuo-ku Osaka-shi, Osaka 541-0043 JP
- 专利权人： KABUSHIKI KAISHA UENO SEIYAKU OYO KENKYUJO
- 当前专利权人： KABUSHIKI KAISHA UENO SEIYAKU OYO KENKYUJO
- 当前专利权人地址： 4-8, 2-chome, Koraibashi, Chuo-ku Osaka-shi, Osaka 541-0043 JP
- 代理机构： Albrecht, Thomas, Dr.
- 优先权： JP2001122933 20010420
- 国际公布： WO2002085835 20021031
- 主分类号： C07C65/03
- IPC分类号： C07C65/03 ; C07C69/84
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 150µm 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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