Kao Corporation

Takashi Kodate

Kazuhisa Fukuhara

Hirohisa Suzuki

Shuichiro Kobaru

Yoshiaki Matsui

Kiyotake Tada

Osamu Takiguchi

Kenichi Ueyama

Katsuhiko Rindo

Yosuke Obata

Masayoshi Ehara

Kayoko Kitada

Noriko Tejima

The present invention relates to an adhesive sheet for cooling which preferably maintains a cooling effect utilizing the heat of vaporization of water and can exert a persistent high cooling effect. The adhesive sheet for cooling a hydrous polymer gel (A) and a fiber sheet (B) laminated thereon:

Adhesive sheet for cooling

There is provided an organopolysiloxane which is excellent in extensibility as well as solubility and dispersibility in water and lower alcohols. There is provided an organopolysiloxane with a poly(N-acylalkyleneimine) segment having a repeating unit represented by the following general formula (1): wherein Rrepresents a hydrogen atom or an alkyl group, an aralkyl group, or an aryl group each having 1 to 22 carbon atoms, and n is 2 or 3, wherein the segment is bound to each of at least two silicon atoms of an organopolysiloxane segment as a main chain via an alkylene group containing a hetero atom, and wherein the number-average molecular weight of the segment is 800 to 1600, the mass ratio of the organopolysiloxane segment as a main chain and the poly(N-acylalkyleneimine) segment is 65/35 to 82/18, and the weight-average molecular weight of the organopolysiloxane segment as a main chain is 10,000 to 100,000.

Organopolysiloxane

A cosmetic composition, comprising the following components (A), (B), (C), and (D): 

Cosmetic composition

A hair styling method, including the steps of: via respective alkylene groups each containing a hetero atom,

Hair styling method

A method of producing an organopolysiloxane compound in which a poly(N-acylalkyleneimine) segment comprising repeating units represented by formula (1): wherein Ris a hydrogen atom, an alkyl group having 1 to 22 carbon atoms, an aralkyl group, or an aryl group, and n is 2 or 3,is bonded to a terminal end and/or a side chain of an organopolysiloxane segment, wherein Ris a hydrogen atom, an alkyl group having 1 to 22 carbon atoms, an aralkyl group, or an aryl group, and n is 2 or 3,to ring opening polymerization in a solvent, thereby preparing a terminal reactive poly(N-acylalkyleneimine) solution;

Process for production of organopolysiloxane compound

The present invention provides an organopolysiloxane obtained by binding, to at least two silicon atoms of an organopolysiloxane segment constituting a main chain, a poly(N-acylalkyleneimine) segment composed of a repeating unit represented by the following formula (1): wherein Rrepresents a hydrogen atom or an alkyl group having from 1 to 3 carbon atoms and n is 2 or 3, via an alkylene group containing a hetero atom, wherein the poly(N-acylalkyleneimine) segment has a number-average molecular weight of from 1,600 to 3,500; a mass ratio (a/b) of the organopolysiloxane segment (a) constituting the main chain to the poly(N-acylalkyleneimine) segment (b) (which will hereinafter be called 'mass ratio (a/b)', simply) is from 42/58 to 58/42; the organopolysiloxane segment between two poly(N-acylalkyleneimine) segments adjacent to each other has a weight-average molecular weight of from 1,600 to 3,500; and the organopolysiloxane segment constituting the main chain has a weight-average molecular weight of 7,000 to 100,000.

The present invention relates to a method for producing an organopolysiloxane compound having a structure in which a poly(N-acylalkylene imine) segment containing a repeating unit represented by the following general formula (1) is bonded to a terminal end and/or a side chain of an organopolysiloxane segment, the method including the steps of (a) subjecting a cyclic iminoether compound represented by the following general formula (I) to ring opening polymerization in a solvent to prepare a solution of a terminal-reactive poly(N-acylalkylene imine); (b) mixing a modified organopolysiloxane containing an amino group bonded to a terminal end and/or a side chain of a molecular chain thereof with a solvent to prepare a solution of the modified organopolysiloxane; (c) mixing the terminal-reactive poly(N-acylalkylene imine) solution prepared in the step (a) with the modified organopolysiloxane solution prepared in the step (b) to react the amino group contained in the modified organopolysiloxane with the terminal-reactive poly(N-acylalkylene imine); (d) adding a basic substance to a reaction product obtained in the step (c); and (e) removing the solvents from a mixture obtained after the addition in the step (d) at a temperature of from 100 to 200&#xb0; C.: wherein Ris a hydrogen atom, an alkyl group having 1 to 22 carbon atoms, an aralkyl group or an aryl group; and n is a number of 2 or 3.

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Wakayama, Japan

Takashi Kodate