Title:
【発明の名称】水中油型エマルジョンの製造方法
Document Type and Number:
Japanese Patent JP2628512
Kind Code:
B2
Abstract:
PURPOSE:To obtain an oil-in-water type emulsion with excellently stable viscosity by forming a liquid crystal phase from an oil phase containing a cationic surfactant of a specific quaternary ammonium salt-type and a part of an aqueous phase and then adding the rest of the aqueous phase so as to transform the phase. CONSTITUTION:A part of an aqueous phase such as ethylene glycol is added to an oil phase containing a sparingly water-soluble quaternary ammonium salt-type cationic surfactant such as dioleyldimethylammonium chloride having two or three alkyl or alkenyl of 14-24 carbons in one molecule. At this time, a liquid crystal phase to give the concentration of the cationic surfactant in 20-60wt.% is formed. Then, the rest of the aqueous phase is added to the liquid crystal phase so as to transform the phase and to obtain an oil-in-water type emulsion. As a result, even in the case of high concentration, the emulsion is prevented from gelling and has excellently stable viscosity even after storage for a long period.
Inventors:
Sakurai Susumu
Mototaka Kinoshita
Shoji Konishi
Mototaka Kinoshita
Shoji Konishi
Application Number:
JP22068188A
Publication Date:
July 09, 1997
Filing Date:
September 03, 1988
Export Citation:
Assignee:
LION Corporation
International Classes:
A61K8/40; A61Q5/12; B01J13/00; C09K23/18; D06M13/02; A61K8/00; D06M13/148; D06M13/322; D06M13/46; D06M13/463; D06M13/47; D06M13/473; (IPC1-7): B01J13/00; B01F17/18
Domestic Patent References:
| JP63194725A | ||||
| JP6031825A | ||||
| JP63134047A | ||||
| JP6227495A |
Attorney, Agent or Firm:
Fumio Usmura