Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Patent
1998-12-29
2000-10-24
Page, Thurman K.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
424 64, 424489, 514550, 514746, 514759, A61K 700, A61K 914, A61K 7025
Patent
active
061363316
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a cosmetic comprising a fluorine-containing oil. The present invention relates to a cosmetic comprising a fluorine-containing oil which can be used in combination with a hydrocarbon-based oil and is incompatible with the hydrocarbon-based oil, and which can be used in combination with powder treated with a fluorine-containing compound and does not inhibit the oil repellency of the powder treated with fluorine-containing compound. In addition to these characteristics, the fluorine-containing oil is characterized by having high safety to skin and high affinity for skin and being inexpensive.
RELATED ART
In recent years, cosmetics into which perfluoropolyethers have been incorporated have been used in many cases. Perfluoropolyethers have the property (lipophobicity) that when used in combination with a hydrocarbon-based oil, they are incompatible with the hydrocarbon-based oil as well as the property that when used in combination with powder treated with a fluorine-containing compound, they do not inhibit the oil repellency of the powder treated with fluorine-containing compound. However, perfluoropolyethers were originally developed as a lubricant in a vacuum pump or the like and are not necessarily the most suitable for incorporation into cosmetics. Specifically, perfluoropolyethers are poor in affinity for skin due to complete replacement of hydrogen atoms in the polyethers by fluorine atoms, and are very expensive.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a fluorine-containing oil which, when used in combination with powder treated with fluorine-containing compound, does not inhibit the oil repellency of the powder treated with fluorine-containing compound, is excellent in affinity for skin, and is inexpensive.
As result of extensive study for solving the above problems, the present inventors found that a specific fluorinated oil is equivalent to perfluoropolyethers in respect of (1) lipophobicity, (2) the property of not inhibiting the oil repellency of the powder treated with fluorine-containing compound and (3) safety for skin and is superior to perfluoropolyethers and in respect of (4) higher affinity for skin and (5) capability of production at lower costs due to incomplete fluorination.
The present invention provides a cosmetic comprising 0.01 to 100% by weight of a fluorine-containing oil (I) represented by the general formula: ##STR2## wherein R.sup.1a and R.sup.1d represent a hydrogen atom or a partially or completely fluorinated C.sub.1 -C.sub.20 aliphatic group; R.sup.1b and R.sup.1c represent a hydrogen atom, a C.sub.1 -C.sub.20 aliphatic group, or a partially or completely fluorinated C.sub.1 -C.sub.20 aliphatic group, provided that at least one of R.sup.1a to R.sup.1d is a partially or completely fluorinated C.sub.1 -C.sub.20 aliphatic group; and n is a number of 1 to 20.
Also, the present invention provides a cosmetic comprising 0.01 to 100% by weight of a fluorine-containing oil (II) represented by the general formula: ##STR3## wherein R.sup.2a represents a hydrogen atom or a partially or completely fluorinated C.sub.1 -C.sub.20 aliphatic group; R.sup.2b, R.sup.2c and R.sup.2d represent a C.sub.1 -C.sub.20 aliphatic group or a partially or completely fluorinated C.sub.1 -C.sub.20 aliphatic group, provided that at least one of R.sup.2a to R.sup.2d is a partially or completely fluorinated C.sub.1 -C.sub.20 aliphatic group; and m is a number of 1 to 20.
Further, the present invention provides a cosmetic comprising 0.01 to 100% by weight of a fluorine-containing oil (III) represented by the general formula: ##STR4## wherein X represents a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, or a partially or completely fluorinated C.sub.1 -C.sub.30 aliphatic group; Y represents a partially or completely fluorinated C.sub.1 -C.sub.30 aliphatic group; and R.sup.3 represents a C.sub.1 -C.sub.22 aliphatic group; and h+o=1 to 100.
Furthermore, the present invention provides a cosmetic compris
Kubo Motonobu
Morita Masamichi
Seki Eiji
Berman Alysia
Daikin Industries LTD
Page Thurman K.
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