摘要 |
The object of the present invention is to prepare a calcium hydrogen phosphate that has excellent binding properties, a large oil adsorption capacity and a specific surface area, and is therefore suitable as an excipient. A scale-like calcium hydrogen phosphate is prepared by reacting phosphoric acid with an alkaline calcium compound such as quick lime, in the presence of a multivalent organic acid with coordinating ability, such as citric acid, to obtain a columnar calcium hydrogen phosphate, and then hydrothermally treating the obtained columnar calcium hydrogen phosphate at a temperature of 60 DEG C or higher. |
申请人 |
FUJI CHEMICAL INDUSTRY CO., LTD., TOYAMA, JP |
发明人 |
TAKADO, KANEMASA, C/O FUJI CHEM, IND. CO. LTD., NAKANIIKAWA-GUN, TOYAMA, JP;MURAKAMI, TATSUO, C/O FUJI CHEM, IND. CO. LTD, NAKANIIKAWA-GUN, TOYAMA, JP |