Shin-Etsu Chemical Co., Ltd.

Canon Kabushiki Kaisha

Yamakawa Yakuhin Kogyo Kabushiki Kaisha

Masanao Kamei

Hiroyuki Nohira

Yoko Yamada

Shinichi Nakamura

Kazuharu Katagiri

Takuya Abe

Kiyomi Tachibana

Hideki Kanazawa

Yuko Etoh

Kazuyuki Matsumura

Chihiro Hayakawa

Ryuichi Inaba

Akira Yamamoto

Masaaki Yamaya

Kazuo Yoshinaga

Takashi Iwaki

Fujio Yagihashi

Masayuki Konishi

Tetsuya Abe

Mariko Kai

Masahiro Terada

Hiroshi Yoshioka

Kenji Shinjo

Shoji Ichinohe

Tsuneo Kimura

Masataka Yamashita

Shinji Irifune

Ichiro Ono

Akio Yoshida

Mitsuhiro Takarada

Toshio Ohba

Masahiko Ogawa

Masahiko Minemura

Tetsuya Inukai

Yasuaki Hara

Hiroshi Ohashi

Mitsuo Asai

Toshiharu Uchimi

Hiroyuki Moriya

Toru Shimizu

Teruki Ikeda

Chieko Hioki

Tomoya Kanai

Yoshinori Takamatsu

Hiroomi Iyoku

Mitsugu Saito

Tomohisa Suzuki

Toshiki Tanaka

Hiroko Kikuchi

Tomoki Okawa

Yoshitaka Hamada

Hiroshi Sasaki

Koji Kawashima

Ryuichi c/o Shin-Etsu Chemical Co Ltd Inaba

The present invention addresses the problem of evaluating the hydrophobicity of a powder. According to the present invention, a powder is charged into a mixed solvent composed of a lipophilic solvent and a hydrophilic solvent, the voltage rate R of the mixed solvent is measured at predetermined time intervals while adding a lipophilic solvent to the mixed solvent charged with the powder, a parameter x correlating with the concentration of powder is defined for an arbitrary voltage rate R, a continuous function HP(x) of the ratio of a lipophilic solvent corresponding to x is defined, and HP(x) for required x is set as a representative value of a lipophilic solvent ratio distribution and used as an index of hydrophobicity.

Method for analyzing degree of hydrophobicity of powder, highly hydrophobized coloring pigment, and cosmetic containing said coloring pigment

A cosmetic including at least one cyclic silicone represented by formula (1), and having a boiling point of 205 to 255&#xb0; C. and a viscosity of less than 5 mm/s (25&#xb0; C.). This cosmetic has a light touch, a good spread, and excellent water repellency, forms a uniform cosmetic film, can achieve a feeling of use without a strong oily feeling, and has stability over time and cosmetic persistence when a variety of oil such as a silicone, hydrocarbon oil, and ester, an organic ultraviolet absorber, or an oily component being solid at 25&#xb0; C. is mixed. 

Cosmetic

This organic group-modified organosilicon resin is represented by the average composition formula (1).(RSiO)(RSiO)(RSiO)(RSiO)(RSiO)(SiO)&#x2003;&#x2003;(1)[a, b, c, d, e and f are numbers that satisfy 0&#x2264;a&#x2264;400, 0&#x3c;b&#x2264;200, 0&#x2264;c&#x2264;400, 0&#x2264;d&#x2264;320, 0&#x2264;e&#x2264;320, 0&#x3c;f&#x2264;1,000, and 0.5&#x2264;(a+b+c)/f&#x2264;1.5.] Because this organic group-modified organosilicon resin can form films softer than those formed with trimethylene siloxysilicate, the cosmetic obtained by blending with said silicon resin feels good when used, has good cosmetic holding properties, spreads easily and has an excellent finish, easy removal, and superior scratch resistance.

Organic group-modified organosilicon resin, production method thereof, and cosmetic

An organopolysiloxane that can suppress swelling of a container due to a hydrogen gas derived from Si&#x2014;H groups and occurrence of an offensive odor derived from aliphatic unsaturated groups, and that is excellent in emulsification stability and has good cosmetic durability, and a cosmetic containing the same. The organopolysiloxane being represented by the following average formula (1): wherein, R1 represents a group selected from an alkyl group having 1 to 30 carbon atoms, etc., R2 represents a divalent organic group having 2 to 15 carbon atoms, R3 represents any of a hydrogen atom and an alkyl group having 1 to 30 carbon atoms, R4s each independently represent a group selected from an alkyl group having 2 to 30 carbon atoms and another organopolysiloxane, 'a' is 1 to 500, 'b' is 1 to 10, and &#x201c;c&#x201d; is 1 to 10.

Organopolysiloxane, cosmetics, and method for manufacturing organopolysiloxane

An organic group-modified organosilicon resin having the average compositional formula (1), which is solid or liquid at 25&#xb0; C., is suited for use in cosmetics. The resin is able to form an emulsion having a pleasant feel on use, a high internal water phase, and stability over time. In formula (1), a, b, c, d, e, and f are numbers: 0&#x2264;a&#x2264;400, 0&#x3c;b&#x2264;200, 0&#x2264;c&#x2264;400, 0&#x2264;d&#x2264;320, 0&#x2264;e&#x2264;320, 0&#x3c;f&#x2264;1,000, and 0.5&#x2264;(a+b+c)/f&#x2264;1.5.(RSiO)(RSiO)(RSiO)(RSiO)(RSiO)(SiO)&#x2003;&#x2003;(1)

Organic group-modified organosilicon resin, making method, and cosmetics

A method for producing a hydrosilyl group-containing organic silicon resin of formula (6) in a solid form, wherein after formulae (1) to (3) are hydrolyzed in the presence of an acid catalyst, hydrolysis is carried out by adding hydrosilyl group-containing organic silicon compounds of formulae (4) and (5), followed by neutralization by a base catalyst with the amount thereof being more than a molar equivalent of the acid catalyst, and then by condensation. By so doing, deactivation amount of the hydrosilyl group can be reduced, so that the method for producing the hydrosilyl group-containing organic silicon resin, which is in a solid form without a solvent and to which a hydrosilyl group can be introduced quantitatively and in a large quantity, is provided,RSiOSiR&#x2003;&#x2003;(1)RSiX&#x2003;&#x2003;(2)SiX&#x2003;&#x2003;(3)HRSiOSiRH&#x2003;&#x2003;(4)HRSiX&#x2003;&#x2003;(5)(RSiO)(HRSiO)(SiO)(RSiO)&#x2003;&#x2003;(6).

Method for producing hydrosilyl group-containing organic silicon resin

Provided is a surface-treated powder, where at least one compound of general formula (1) adheres to the surface of the powder. In formula (1), Ris a monovalent aromatic hydrocarbon group having 6-12 carbon atoms, Ris a monovalent non-aromatic hydrocarbon group having 1-30 carbon atoms, Rand Rare a group selected from aforementioned groups defined for Rand R, and Ris a group of formula (2), Ris a divalent hydrocarbon group having 2 to 8 carbon atoms and Ris an alkyl group having 1 to 6 carbon atoms, a, b, c, and d are integers of from 0-3, 0-200, 1-150, and 0-50, respectively, provided that when a is 0, d and e are integers of from 1-50 and 0-2, respectively, and c/(b+c+d) is 0.25 or more. 

Surface-treated powder and cosmetic having the same

There is disclosed a cosmetic comprises a sugar compound obtained by reacting a hydroxyl group of a saccharide, an isocyanate group-containing organopolysiloxane represented by the following general formula (1), and an isocyanate group-containing organic compound represented by the following general formula (2). As a result, there is provided a cosmetic excellent in cosmetic sustainability and storage stability that can improve such undesirable feelings of use as insufficient spreadability and stickiness, improve the solubility to not only a non-polar oil such as a silicone oil and a light liquid paraffin, but also a polar oil such as a UV-absorber, an ester oil, and a natural animal and vegetable oil, provides non-stickiness with a cosmetic containing the polar oil, and prevent adhesion of the cosmetic to clothes (secondary adhesion).

A powder surface-treated with an organopolysiloxane represented by the following average compositional formula (1):RRRSiO&#x2003;&#x2003;(1)wherein Ris selected from the group consisting of C1-30 alkyl, C1-30 fluoroalkyl, C6-30 aryl, and C6-30 aralkyl groups,  wherein Ris as defined above, each Ris, independently, selected from the group consisting of C1-30 alkyl, C1-30 fluoroalkyl, C6-30 aryl, and C6-30 aralkyl groups, Q is CHor an oxygen atom, wherein d is an integer of from 1 to 5, k is an integer of from 0 to 500, and h is an integer of from 0 to 3,

Powder surface-treated with an organopolysiloxane having carboxyl groups, a dispersion of the same, and a cosmetic comprising the same

There is disclosed an organopolysiloxane represented by the following general formula (1). (each Rindependently represents a group selected from an alkyl group having 1 to 30 carbon atoms, a fluorine-substituted alkyl group having 1 to 30 carbon atoms, an aryl group having 6 to 30 carbon atoms, and an aralkyl group having 6 to 30 carbon atoms; Y represents a polyvalent alcohol compound residue; M represents any of a hydrogen atom, an alkaline metal atom, an ammonium ion, and an alkylammonium ion; and reference character m represents an integer of 0 to 300.) There can be an organopolysiloxane capable of providing a cosmetic having excellent emulsion stability, excellent powder-dispersion stability if powders are contained therein, and excellent skin affinity and cosmetic durability, due to a novel organopolysiloxane having a specific structure containing a nonionic hydrophilic group and an anionic hydrophilic group of a carboxylic acid structure; and a cosmetic containing it.

Organopolysiloxane and cosmetic containing the same

An organopolysiloxane hair treatment agent (A) represented by the following formula (1),RRRSiO&#x2003;&#x2003;(1).The hair treatment agent and cosmetic maintain good conditioning effect for a prolonged period of time.

Organopolysiloxane hair treatment agent and hair cosmetic containing the treatment agent

Powder treated with a powder treating agent comprising organohydrogenpolysiloxane, characterized in that the organohydrogenpolysiloxane has a weight average molecular weight of from 300 to 100,000, at least one SiH bond per molecule, and at least one selected from (RSiO) unit and (SiO) unit, wherein Ris selected from the group consisting of a hydrogen atom, and alkyl, fluorinated alkyl, aryl and aralkyl groups each having 1 to 30 carbon atoms.

Powder treated with a power treating agent comprising an organopolysiloxane and cosmetic comprising the powder

The invention provides an organopolysiloxane shown by the following formula (1); such that each Rindependently represents a group selected from an alkyl group having 1 to 30 carbon atoms and optionally substituted with a fluorine atom, an aryl group having 6 to 30 carbon atoms, and an aralkyl group having 7 to 30 carbon atoms; each Rindependently represents a divalent organic group having 2 to 15 carbon atoms and optionally intervened with an oxygen atom; and each Rindependently represents a group selected from a polyoxyalkylene group shown by the following formula (2),&#x2014;(CHO)(CHO)(CHO)(CHO)R&#x2003;&#x2003;(2)a hydrogen atom, and a group shown by the following formula (3), wherein at least one of Rin one molecule is the polyoxyalkylene group shown by the formula (2) with 'm' representing an integer of 0 to 300 and 'n' representing an integer of 1 to 10.

Organopolysiloxane and cosmetic containing it

Provided are an organopolysiloxane that exhibits good dispersion stability within not only organic oil agents but also cosmetic materials that contain a powder, and is able to produce a cosmetic material that exhibits excellent skin affinity, an organopolysiloxane that does not impart a sticky feeling, and exhibits excellent skin affinity and skin adhesion, and a cosmetic material including such an organopolysiloxane. The organopolysiloxane is represented by formula (1) below: in which Rrepresents a hydrocarbon group such as an alkyl group, Rrepresents a group represented by formula (3) or formula (4) below: 

Organopolysiloxane having amide group, and cosmetic material containing same

An organopolysiloxane represented by the following average compositional formula (1):RRRSiO&#x2003;&#x2003;(1)wherein Ris selected from the group consisting of C1-30 alkyl, C1-30 fluoroalkyl, C6-30 aryl, and C6-30 aralkyl groups,  wherein Ris as defined above, each Ris, independently, selected from the group consisting of C1-30 alkyl, C1-30 fluoroalkyl, C6-30 aryl, and C6-30 aralkyl groups, Q is CHor an oxygen atom, wherein d is an integer of from 1 to 5, k is an integer of from 0 to 500, and h is an integer of from 0 to 3,

Organopolysiloxane having carboxyl groups

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Annaka, Japan

Masanao Kamei