Abstract: An alkanol permeation polymer membrane prepared by dissolving biocompatible, non-allergenic polymer capable of being dissolved in polar organic solvent in methylene chloride to prepare a first solution, dissolving cellulose or glycol type polyol compounds in cosolvent composed of alkanol and methylene chloride to prepare a second solution, and mixing the first solution with the second solution, casting the mixed solution on a glass plate with a controlled thickness and evaporating may control the release of drugs effectively.

Abstract: The invention relates to a microencapsulated emulsion a drug-dispersed oil core surrounded by a water-insoluble capsule material. The capsule material is made up of a polysaccharide which has metal chelating capacity, a biocompatible and water-soluble polymer for improving the physical properties of the capsule material, and emulsifying agents. The ratio of polysaccharide to polymer in the capsule material is at least capsule material, and emulsifying agents. The ratio of polysaccharide to polymer in the capsule material is at least 0.25.

Abstract: A process for the microencapsulation of oil droplets containing a medical drug for oral administration, comprises the steps of mixing the drug with liquid oil by sonication for 5-30 seconds to disperse the drug homogeneously in the oil, and adding the drug-dispersed oil to an aqueous solution mixture to form a two phase system. The aqueous solution mixture will form a capsule material, and comprises a polysaccharide which has metal chelating capacity, a biocompatible and water-soluble polymer for improving the physical properties of the capsule material, and emulsifying agents. The two phase system is then subjected to sonication to produce an oil-in-water emulsion containing the drug-dispersed oil in the form of droplets having a diameter in the range of 1-5 .mu.m. As soon as possible after formation of the emulsion, the emulsion is added to a multivalent cation-containing solution to harden the capsule material.

Abstract: The present invention relates to a biodegradable and high absorbent resin composition, a nonwoven fabric made of the same and pads comprising this fabric. This resin composition can be prepared by mixing sodium alginate in a predetermined ratio with a synthetic polymer electrolyte. This resin composition can be spun into a fiber and a nonwoven fabric can be made from it. Pads made of this fabric have biodegradability, high absorbency and water retentivity, thereby being applicable for sanitary products.

Abstract: The present invention relates to a biodegradable and high absorbent resin composition, a nonwoven fabric made of the same and pads comprising this fabric. This resin composition can be prepared by mixing sodium alginate in a predetermined ratio with a synthetic polymer electrolyte. This resin composition can be spun into a fiber and a nonwoven fabric can be made from it. Pads made of this fabric have biodegradability, high absorbency and water retentivity, thereby being applicable for sanitary products.