发明名称 |
Method for providing enteric coatings on solid dosage forms |
摘要 |
Enteric coatings are provided on solid pharmaceutical dosage forms by a method comprising covering the dosage froms with an aqueous solution of a polymeric substance having carboxyl groups in the watersoluble salt form and contacting the thus coated dosage forms with an inorganic acid to convert the polymeric substance into the water-insoluble acid form. The coating solution includes no organic solvent, and this method is safe from dangers of fires or explosions and air pollution.
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申请公布号 |
US4017647(A) |
申请公布日期 |
1977.04.12 |
申请号 |
US19750584914 |
申请日期 |
1975.06.09 |
申请人 |
SHIN-ETSU CHEMICAL COMPANY LIMITED |
发明人 |
OHNO, SHIGERU;HOSHI, NOBORU;SEKIGAWA, FUJIO |
分类号 |
A61K9/00;A61K9/28;A61K9/30;A61K9/32;A61K9/50;A61K47/30;(IPC1-7):A61K9/00;A61K15/00;A61K21/00 |
主分类号 |
A61K9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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