Shiseido Company, Limited

Toshio Yanaki

Michihiro Yamaguchi

Fumiaki Matsuzaki

Isamu Kaneda

Kazuyuki Miyazawa

Katsunori Yoshida

Tomoyuki Kawasoe

Toshihito Yabu

Tadashi Nakamura

Yasuhiro Arai

Yoshikazu Soyama

Kei Watanabe

Kenzo Ito

Katsuyuki Kaneko

Hideo Nakajima

Takashi Oka

Tadahito Takahashi

Eriko Takeoka

Takafumi Kurosawa

Yoshiharu Tsuji

Takahiro Akutsu

Katsuo Hashimoto

Masatoshi Ochiai

Ryota Yamasaki

Daigo Mizumoto

Masaaki Uemura

Kimio Ohno

Ryuichi Takamoto

Hideko Saito

Kaoru Ichikawa

Francoise M Winnik

Natsuko Fujii

Kazuyoshi Nakamura

Tomoko Sekine

Yoko Nagasawa

Masaaki Yasuda

Hiroko Watanabe

The present invention provides a microgel having a mean particle size of 0.1-1,000 &#x3bc;m, the microgel being produced from a gel which is formed by use of a hydrophilic compound capable of forming a gel. An external composition containing the microgel provides an excellent sensation during use; i.e., the composition provides neither sticky sensation during use nor frictional sensation. Furthermore, even when a large amount of a pharmaceutical ingredient, such as a whitening ingredient, or a salt is incorporated into the composition, the viscosity of the composition is not lowered, and the composition exhibits excellent viscosity increasing property. In addition, the composition exhibits long-term stability, without inviting separation of water.

Microgel and external compositions containing the same

The present invention is a thickener consisting of a microgel obtained by radical polymerization of water soluble ethylene-type unsaturated monomers dissolved in the dispersion phase in a composition having an organic solvent or an oil component as the dispersion medium and water as the dispersion phase, as well as a cosmetic containing said thickener. Also, the present invention is a method of manufacturing a water-swelling polymer in a radical polymerization system consisting of a composition having an organic solvent or oil component as the dispersion medium and an aqueous solution of a water soluble ethylene type unsaturated monomer as the dispersion phase wherein said system contains a surfactant chosen in such a way that the aforementioned composition forms a single phase W/O microemulsion or fine W/O emulsion at a thermal radical polymerization temperature and said thermal radical polymerization is carried out at a temperature equal to or higher than the phase transition temperature of the radical polymerization system, yet not higher than the phase transition temperature by 20&#xb0; C. or more.

Thickener, cosmetic preparation containing the same, and process for producing the same

A method for measuring skin absorbability of a substance, which includes measuring the amount of the substance which is penetrated into hair follicles; and using the resultant data as an index representing the amount of the substance which is absorbed through skin pores, to thereby determine the amount of the substance absorbed through skin pores and a method for measuring skin absorbability of a substance, which includes bringing the substance into contact with a first surface of a thin film that mimics the skin surface layer, a second surface of the film being brought into contact with artificial sebum; and evaluating the sebum transferability of the substance by using the degree of transfer of the substance to the artificial sebum as an index, are disclosed. A kit for performing the measurement method of the present invention is also disclosed.

Method for measuring skin absorbability

The present invention is a method for manufacturing a phosphorylcholine group-containing polysaccharide wherein the aldehyde derivative-containing compound obtained by the oxidative ring-opening reaction of glycerophosphorylcholine is added to a polysaccharide containing amino groups as well as a new polysaccharide having phosphorylcholine groups obtained from this manufacturing method. The object of the present invention is to provide a phosphorylcholine group-containing polysaccharide that is superior in biocompatibility and moisture retention, and is useful as a polymer material for medical use, as well as a simple method of manufacturing it. The polysaccharide of the present invention is utilized, for example, in artificial organs, biomembranes, coating agents for medical tools, drug delivery, and in cosmetics.

Polysaccharide containing phosphorylcholine group and process for producing the same

A hair treatment agent composition characteristically comprising a specific hydrophobically modified polyether urethane and cationic surfactant. The hair treatment agent composition of the present invention provides has good temperature stability in terms of the viscosity, exhibits superior fluid flow characteristics, achieves smoothness and ease of arranging the hair after drying, and gives a superior sensation during use. A cleaning agent composition characteristically comprising a specific hydrophobically modified polyether urethane and anionic surfactant and/or ampholytic surfactant. The cleaning agent composition of the present invention has superior viscosity and is superior in terms of foam formation as well as foam durability and feels refreshing without a slimy sensation after rinsing-off.

Hair grooming preparation

The object of the present invention is to provide a film composition which is solidified in water of which a painted film is rapidly solidified and also has proper usabilities for use as a manicure. To accomplish the object a film composition of the present invention comprises water insoluble film materials, and a solvent which dissolves the water insoluble film materials and soluble with water, wherein the solvent contains specified alkylene glycol ethers and ketones, and characterized by that the film materials are precipitated from the mixture of the remaining solvent and penetrating water in a painted film of the composition when the painted film is dipped in water.

Compositions forming film solidifying in water and nail-care products and nail-care method with the use of the same

The hairdressing cosmetic preparation of the present invention is characterized by comprising a heat-gelling polymer which becomes to gel upon heating. The gelling temperature of the heat-gelling polymer is preferably 60&deg; C. or higher. Preferable heat-gelling polymer is polysaccharides such as &bgr;-1,3-glucan, &bgr;-1,3-xylan, curdlan and the like. The hair dressing preparation of the present invention, due to using such heat-gelling polymer, can give excellent hairdressing effect and hair-setting power when hair applied with the hairdressing preparation is treated with heating.

Hairdressing cosmetic preparation and hairdressing method using the same

The present invention is an emulsion-type pack cosmetic containing polyvinyl alcohol, oil, and water which characteristically contains the oil in the amount of 20-80 wt % or 15-50 wt % of the total emulsion-type pack cosmetic. A fast-drying peel-off type pack cosmetic with a short drying time and superior usability can be provided.

Emulsified cosmetic face pack

Gelling agent and gel compositions

Cosmetic composition

A microcapsule of the present invention is characterized in that it encapsulate oil droplets having average particle size of 0.01 to 3 &mgr;m and its capsulating agent is a hydrophilic polymer gelling agent. The main component of the capsulating agent is preferably a hydrophilic polymer gelling agent which hardens by heating and cooling, and, in particular, agar or carrageenan. In the making method of the present invention, a microcapsule can be made efficiently due to no loss in the inner oil phase, and its particle size can easily be controlled. The microcapsule is excellent in shearing-resistance, store stability. Also, if the fracture strength of the microcapsule is within a specific range, a microcapsule which releasing characteristic of encapsulated oil droplets when applied is immediately-, gradually- or non-releasing can be obtained. Further, when such a hydrophilic microcapsule is coated, the contraction in air, dispersibility to various medium, and elusion of encapsulated components in medium can be also improved.

Microcapsule and method of making the same

In order to provide a liquid crystal composition and a cosmetic preparation, which is favorable in adaptation to skin and gives smooth feeling in case of using as a skin care product, and which is favorable in adaptation to makeup and has high makeup removing effect in case of using as a make-up remover, and which is favorable in adaptation to hair and has favorable feeling of use to provide glossiness to hair in case of using as a hair care product, a cosmetic preparation of the present invention comprises (A) 10 to 60 wt % of a nonionic surfactant, (B) 1 to 50 wt % in all of one or more of a water-soluble substance having a hydroxyl group, (C) 1 to 70 wt % of a silicone oil, and (D) 10 to 60 wt % of water and has a liquid crystal phase and/or an isotropic surfactant continuous phase.

Liquid crystal composition and cosmetic preparation

A copolymer having silyl groups with at least one reactive functional group bonded thereto. The copolymer comprises a monomer (A) shown by the following Formula (I):

Copolymer containing reactive silyl groups, composition containing the same and method of treatment with the same

O/W/O type multiphase emulsion

There is provided a .beta.-1,3 glucan obtained by applying ultrasonic treatment in a mixed solution of an organic solvent containing at least dimethyl sulfoxide to remove the contaminant proteins and there is provided a coupling medium for a probe of an ultrasonograph comprised of a gel composed of a .beta.-1,3 glucan, as a main component, from which contaminant proteins have been removed as a coupling medium for a probe of an ultrasonograph superior in physical properties and safety.

Protein removed .beta.-1,3 glucan and coupling medium for probe of

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Yokohama, Japan

Toshio Yanaki