Shiseido Company, Limited

Toho Chemical Industry Co., Ltd.

Akira Noda

Michihiro Yamaguchi

Masanori Aizawa

Yoshimaru Kumano

Takashi Ohmori

Tomohiko Kimura

Yuji Matsushita

Takuji Nozawa

Akio Suzuki

Hiroaki Yokoyama

The present invention is to provide a new surfactant that can be used as an emulsifier excellent in emulsion stability and texture in use and as a cleanser excellent in cleansing power and texture in use and having low skin irritation. A surfactant consisting of a compound represented by the below-described general formula (1).Y&#x2014;O-(EO)-(AO)-(EO)-X&#x2003;&#x2003;(1)(In the formula, AO represents an oxyalkylene group having 3 to 4 carbon atoms; m is the average addition mole number of the oxyalkylene group and satisfies 5&#x2266;m&#x2266;100. EO represents an oxyethylene group; l and n are the average addition mole numbers of the oxyethylene groups and satisfy 0&#x2266;l&#x2266;4 and 0&#x2266;n&#x2266;4. Either X or Y or both are a functional group represented by &#x2014;SOM, &#x2014;COOM, &#x2014;HPOM, &#x2014;(CH)&#x2014;SOM, or &#x2014;(CH)&#x2014;COO, wherein M is a hydrogen ion or a monovalent inorganic or organic cation, and q is the number of carbon atoms of the linked alkylene group and satisfies 1&#x2266;q&#x2266;4. When either X or Y is the above-described functional group, the other one can be a hydrogen atom, a methyl group, or an ethyl group.)

Surfactant and composition containing the same

The present invention provides a novel polymer that can impart a moisturized feeling to the hair and skin after use. A polymer comprising an amphoteric monomer represented by the following general formula (I) and a cationic monomer represented by the following general formula (II) as the essential constituent monomers: (wherein, Rrepresents a hydrogen atom or a methyl group; Rand Reach independently represent an alkyl or alkoxy group having 1 to 4 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, a phenyl group, or a &#x2014;(CHCHO)Rgroup (n is an integer of 1 to 50; and Rrepresents a hydrogen atom or an alkyl or alkoxy group having 1 to 4 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, or a phenyl group); Rrepresents an alkylene group having 1 to 3 carbon atoms; A represents an oxygen atom or NR(Rrepresents a hydrogen atom or an alkyl or alkoxy group having 1 to 4 carbon atoms, a phenyl group, or a &#x2014;(CHCHO)Rgroup (n is an integer of 1 to 50; Rrepresents a hydrogen atom, an alkyl or alkoxy group having 1 to 4 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, or a phenyl group)); and B represents an alkylene group having 1 to 4 carbon atoms), and (wherein, Rand Reach independently represent a hydrogen atom or an alkyl or alkoxy group having 1 to 4 carbon atoms; and Yrepresents a monovalent inorganic or organic anion).

Polymer and cosmetic preparation

A cosmetic composition on an external treatment agent containing microcapsules, with an average particle size of 0.1 to 2000 &mgr;m, enclosing a hydrophobic component, wherein the microcapsules are composed of a gelatin film swollen with water.

Cosmetic containing fine soft microcapsules

A cosmetic composition on an external treatment agent containing microcapsules, with an average particle size of 0.1 to 2000 .mu.m, enclosing a hydrophobic component, wherein the microcapsules are composed of a gelatin film swollen with water.

Growing community of inventors

Yokohama, Japan

Akira Noda