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Stabilizing Technology of water-in-Oil Emulsification with Quaternium-18 Hectorite by Gelling Action  

김인영 (엔프라니(주) 피부과학연구소)
조춘구 (숭실대학교 환경ㆍ화학공학과)
이주동 (엔프라니(주) 피부과학연구소)
Publication Information
Journal of the Society of Cosmetic Scientists of Korea / v.29, no.1, 2003 , pp. 135-150 More about this Journal
Abstract
This study is described the stabilizing technology of water-in-oil (w/o) emulsion and the mechanism of emulsification with quaternium-18 hectorite (Q-18 HTRT) by swelling action. When Q-18 HTRT is dispersed in oil, it swells and constructs card-house structure adding ethanol, and formation of water phase is caused by hydrogen bonding. The gelling activities of Q-18 HTRT were excellent such as mineral oil, squalane, cetostearyl isononanoate, isostearic acid, cetyl octanoate, octyl dodecanol and so on. Especially, when oil gel containing Q-18 HTRT passed one to three times by Roll mill. It made the W/O emulsion cream (W/O-ECRM) having 2.0 w/w% of Q-18 HTRT and also produced the control sample (control) including 3.0 w/w% of cetyl PEG/PPG- l0/l dimethicone. The stability of after 24 weeks, Hardness of W/O-ECRM dropped 7.48%, whereas hardness of control went down 57 71%. As a result of these test emulsification of W/O-ECRM is superior compared with control. In cosmetic, 0-18 HTRT can use as suspending agent, oil adsorbent, emulsifying agent, dispersing agent, viscosifier and pigment.
Keywords
bentonite; emulsification; water-in-oil; gelling agent; hardness; stability;
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