MICROCAPSULE, ITS PRODUCTION, AND GELLED COMPOSITION CONTAINING IT

PROBLEM TO BE SOLVED: To prevent the deterioration of quality by a method in which in a microcapsule in which a hydrophobic organic substance is coated with a membrane material, the membrane material is formed from a polyamide resin by a process in which the relationship between the equivalent of th...

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Bibliographische Detailangaben
Hauptverfasser:	TAKAGI EMI, TAKEI NORIKO, MIZUNO KIYOSHI, TANAKA TAKEZO, IIDA YASUO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY DISINFECTION, STERILISATION, OR DEODORISATION OF AIR HUMAN NECESSITIES HYGIENE MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MEDICAL OR VETERINARY SCIENCE METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To prevent the deterioration of quality by a method in which in a microcapsule in which a hydrophobic organic substance is coated with a membrane material, the membrane material is formed from a polyamide resin by a process in which the relationship between the equivalent of the halide group of a polybasic acid halide and the equivalent of the amino group of a polyamine is set up in specified conditions. SOLUTION: In a microcapsule using a hydrophobic core substance and a polyamide membrane material, the polyamide is obtained by the interfacial polycondensation between a polybasic acid halide and a polyamine in the presence of polyvinyl alcohol in which the relationship between the equivalent A of the halide group and the equivalent B of the amino group is set up to be 0