Cosmetic or dermatological preparations based on emulsifiers which are free from ethylene oxide and propylene oxide, for the preparation of microemulsion gels
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61K-007/00
A61K-007/48
출원번호
US-0269778
(1999-06-18)
우선권정보
DE-0041672 (1996-10-10)
국제출원번호
PCT/EP97/05553
(1997-10-09)
§371/§102 date
19990618
(19990618)
국제공개번호
WO98/15255
(1998-04-16)
발명자
/ 주소
Khiet Hien Diec DE
Wolfgang Meier CH
Jorg Schreiber DE
출원인 / 주소
Beiersdorf AG DE
대리인 / 주소
Norris McLaughlin & Marcus
인용정보
피인용 횟수 :
42인용 특허 :
3
초록▼
Microemulsion gels a) based on oil in water type, comprising an oil phase, substantially consisting of not easily volatile constituents, and an aqueous phase containing one or more O/W emulsifiers free from ethylene oxide and propylene oxide and possibly one or more additional O/W emulsifiers, an em
Microemulsion gels a) based on oil in water type, comprising an oil phase, substantially consisting of not easily volatile constituents, and an aqueous phase containing one or more O/W emulsifiers free from ethylene oxide and propylene oxide and possibly one or more additional O/W emulsifiers, an emulsifier content which is lower than 20 wt. % related to the full weight of the microemulsion, obtained in such a way that a mixture of basic constituents, consisting of an aqueous phase, an oil phase, one or more O/W emulsifiers, possibly one or more additional O/W emulsifiers, possibly other auxiliary, additional or active agents, is made to react against each other in a mixing ratio so that a microemulsion can be obtained and b) in which droplets of discontinuous oil phase are bound to each other by one or more cross-linking substances, whose molecules are characterized by at least one hydrophylic area having a suitable expansion for bridging of distance between each microemulsion droplet and at least one hydropobic area, which can interact hydrophobically with the microemulsion droplets.
대표청구항▼
1. Oil-in-water microemulsion gels,(a) which comprise a discontinuous oil phase and a continuous aqueous phase, one or more oil-in-water emulsifiers which do not contain ethylene oxide or propylene oxide and optionally furthermore comprising one or more water-in-oil emulsifiers having an emulsifier
1. Oil-in-water microemulsion gels,(a) which comprise a discontinuous oil phase and a continuous aqueous phase, one or more oil-in-water emulsifiers which do not contain ethylene oxide or propylene oxide and optionally furthermore comprising one or more water-in-oil emulsifiers having an emulsifier content of less than 20% by weight, based on the total weight of the microemulsion, and which is formed by formulating a mixture of the base components, comprising the aqueous phase, the oil phase, one or more of said oil-in-water emulsifiers, optionally one or more water-in-oil emulsifiers, and optionally further auxiliaries, additives and/or active compounds, to form a microemulsion, (b) in which the droplets of the discontinuous oil phase are joined to one another by one or more crosslinking substances, the molecules of which have at least one hydrophilic region, which has an extension sufficient to bridge the distance between the microemulsion droplets, and at least one hydrophobic region, which enters into a hydrophobic interaction with the microemulsion droplets.
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이 특허에 인용된 특허 (3)
Bindl Johann (Burghausen DEX) Ninomiya Kiyoshi (Tokyo JPX) Taketa Izura (Osaka JPX), Crosslinkable composition based on aminosilicone.
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