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Process for the preparation of enteric medicaments

阅读:143发布:2023-03-11

专利汇可以提供Process for the preparation of enteric medicaments专利检索,专利查询,专利分析的服务。并且An improved enteric coating for medicament less soluble in gastric juice or water is obtained by coating a medicament with an organic solvent-soluble cellulose derivative in which the hydrogen atom of one hydroxyl group has been substituted by a carboxymethyl group and at least one of other hydroxyl groups have been esterified or etherified.,下面是Process for the preparation of enteric medicaments专利的具体信息内容。

  • 2. The process of claim 1, wherein said cellulose derivative is a member selected from the group consisting of carboxymethyl, cellulose acetate, carboxymethyl hydroxypropyl cellulose acetate, carboxymethyl ethyl cellulose, and carboxymethyl cellulose stearic acid ester derivatives.
  • 3. The process of claim 1, wherein said organic solvent is a member selected from the group consisting of methanol, ethanol, isopropanol, ethyl acetate, benzene, toluene, dioxane, acetone, methylene chloride, trichloroethylene, and chloroform.
  • 4. The process of claim 1, wherein said medicament to be coated is an enzyme.
  • 5. The process of claim 1, wherein the ester so formed is a member selected from the group consisting of an acetic acid ester group, a propionic acid ester group, a butyric acid ester group, and a higher fatty acid group.
  • 6. The process of claim 1, wherein a nitric acid ester group replaces said carboxy acid ester group.
  • 7. An enteric coated medicament prepared by the process of claim
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