摘要:
The present invention is directed to ultraviolet shielding composite fine particles having transparency in a visible light region, comprising (a) matrix particles comprising an aggregate of primary particles having an average particles diameter of from 0.001 to 0.3 .mu.m, said aggregate being formed while retaining the shapes of the primary particles; and (b) daughter particles having an average particle diameter of from 0.001 to 0.1 .mu.m, said daughter particles being dispersed in and supported by said matrix particles, wherein said daughter particles have a smaller band gap energy than that of particles constituting said matrix particles, and possess capability of absorbing ultraviolet light. The composite fine particles are produced by preparing a liquid mixture containing a mixture comprising starting materials for matrix particles and for daughter particles; forming droplets from the liquid mixture; and drying the formed droplets and/or pyrolyzing starting materials for pyrolysis therein. The cosmetics of the present invention contain the above composite fine particles.
摘要:
The present invention is directed to ultraviolet shielding composite fine particles having transparency in a visible light region include (a) matrix particles comprising an aggregate of primary particles having an average particle diameter of from 0.001 to 0.3 .mu.m, the aggregate being formed while the primary particles retain their shapes; and (b) daughter particles having an average particle diameter of from 0.001 to 0.1 .mu.m, the daughter particles being dispersed in and supported by the matrix particles. In the composite fine particles, the daughter particles have a smaller band gap energy than the particles constituting the matrix particles and are capable of absorbing ultraviolet light, and the resulting ultraviolet shielding composite fine particles have substantially no catalytic activity.
摘要:
The present invention is directed to a fluorine-modified silicone derivative the organopolysiloxane chain which is partly substituted by the siloxane chain of the following general formula (1), (2) or (3), a preparation process thereof, intermediates useful for the preparation thereof and cosmetic compositions containing this derivative. ##STR1## wherein Rf and Rf' mean individually a perfluoroalkyl group having 1-20 carbon atoms or a .omega.-H-perfluoroalkyl group represented by the formula H(CF.sub.2).sub.t -- in which t stands for an integer of 1-20, R.sup.1 may be identical with or different from each other and means a straight-chain or branched aliphatic hydrocarbon group having 1-20 carbon atoms, or an alicyclic or aromatic hydrocarbon group having 5-10 carbon atoms, R.sup.2 denotes a hydrogen atom, a straight-chain or branched aliphatic hydrocarbon group having 1-20 carbon atoms, an alicyclic or aromatic hydrocarbon group having 5-10 carbon atoms, a perfluoroalkyl group having 1-20 carbon atoms, or a .omega.-H-perfluoroalkyl group represented by the formula H(CF.sub.2).sub.u --in which u stands for an integer of 1-20, R.sup.3 is a divalent hydrocarbon group having 2-16 carbon atoms, X and Y mean individually a single bond, --CO-- or a divalent hydrocarbon group having 1-6 carbon atoms, l stands for a number of 2-16, m and n are individually a number of 1-6, and r is a number of 0-50. Cosmetic compositions containing this compound have excellent water and oil repellency and are also good in lastingness of makeup and feeling upon use.
摘要:
An emulsified, water-in-oil type composition comprises the following components (A), (B), (C) and (D): (A) an oil phase, (B) a high molecular compound having orientation to oil-water interfaces, (C) a lower alcohol, and (D) water. A skin cosmetic preparation containing the emulsified, water-in-oil type composition is also disclosed.
摘要:
The present invention is directed to cosmetic compositions containing a fluorine-modified silicon derivative the organopolysiloxane chain which is partly substituted by the siloxane chain of the following general formula (1), (2) or (3) ##STR1## wherein Rf and Rf' mean individually a perfluoroalkyl group having 1-20 carbon atoms or a .omega.-H-perfluoroalkyl group represented by the formula H(CF.sub.2).sub.t -- in which t stands for an integer of 1-20, R.sup.1 may be identical with or different from each other and means a straight-chain or branched aliphatic hydrocarbon group having 1-20 carbon atoms, or an alicyclic or aromatic hydrocarbon group having 5-10 carbon atoms, R.sup.2 denotes a hydrogen atom, a straight-chain or branched aliphatic hydrocarbon group having 1-20 carbon atoms, an alicyclic or aromatic hydrocarbon group having 5-10 carbon atoms, a perfluoroalkyl group having 1-20 carbon atoms, or a .omega.-H-perfluoroalkyl group represented by the formula H(CF.sub.2).sub.u -- in which u stands for an integer of 1-20, R.sup.3 is a divalent hydrocarbon group having 2-16 carbon atoms, X and Y mean individually a single bond, --CO-- or a divalent hydrocarbon group having 1-6 carbon atoms, l stands for a number of 2-16, m and n are individually a number of 1-6, and r is a number of 0-50.
摘要:
A fluorine-modified silicon compound having a polymerization degree of from 1 to 400 and containing at least one siloxane unit represented by formula (1): ##STR1## wherein R.sup.1 represents an aliphatic straight-chain or branched hydrocarbon group having 1 to 20 carbon atoms or an alicyclic hydrocarbon group having 5 to 10 carbon atoms or an aromatic hydrocarbon compound having 6 to 10 carbon atoms; and m represents 0 or an integer of from 1 to 10; a process for preparing the same; and a cosmetic containing the same are disclosed. The fluorine-modified silicone derivative exhibits high water- and oil-repellency to provide cosmetics which wear long and have a good feel on use.
摘要:
Compounds represented by the following general formula: ##STR1## wherein Rf and Rf' mean a perfluoroalkyl group having 1-20 carbon atoms or a (.omega.-H-perfluoroalkyl group represented by the formula H(CF.sub.2).sub.t in which t stands for an integer of 1-20, R.sup.2 denotes a hydrogen atom, a straight-chain or branched aliphatic hydrocarbon group having 1-20 carbon atoms, an alicyclic or aromatic hydrocarbon group having 5-10 carbon atoms, a perfluoroalkyl group having 1-20 carbon atoms, or .omega.-H-perfluoroalkyl group represented by the formula H(CF.sub.2).sub.u - in which u stands for an integer of 1-20, X and Y mean individually a single bond, --CO-- or a divalent hydrocarbon group having 1-6 carbon atoms, l stands for a number of 2-16, and m and n are individually a number of 1-6. The compounds are useful for preparing fluorine-modified silicone derivatives suitable for cosmetic compositions.
摘要:
Cosmetics comprising a hydrophobic powder or a fluorine compound-treated powder, and a liquid perfluoro organic compound are disclosed. These cosmetics are excellent in water repellency, water resistance, sebum resistance and oil resistance, prevents cosmetic components from the removal due to sweat or sebum, shows a good spreadability on the skin and gives a desirable feel at the use, for example, a moist and refreshing feel.
摘要:
A fluorine-modified silicone derivative having an organopolysiloxane chain which is partly substituted by the siloxane chain of the following general formula (1), (2) or (3), ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sub.f, R.sub.f ', l, m, n and r are as described herein, a preparation process thereof, intermediates useful for the preparation thereof and cosmetic compositions containing this derivative.