Kao Corporation

Kenichi Ueyama

Kazuhisa Fukuhara

Michiko Tada

Akira Shiga

Takashi Kodate

Eiichi Nishizawa

Hiroshi Kawamukai

Masayoshi Ehara

Kayoko Kitada

Nozomi Nagashima

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 leave-on type hair cosmetic composition having the following two layers A and B:

Hair cosmetic composition

A leave-on hair cosmetic composition, which contains the following components (A) and (B):

A leave-on hair cosmetic composition contains (a) malic acid or its salt, (b) lactic acid or its, and (c) an organic solvent selected from the group consisting of aromatic alcohols, N-alkylpyrrolidones, alkylene carbonates, polypropylene glycol, lactones and cyclic ketones. This hair cosmetic composition is excellent in the effect of substantially modifying the hair property to improve its sleekness, styling ease and touch feel.

Cosmetic hair preparation

A leave-on hair cosmetic composition, which contains the following components (A), (B) and (C): wherein the cosmetic composition has a pH of from 2 to 5 at 25&#xb0; C. when diluted to 20 times the weight with water. The present invention also relates to a hair quality improving method which includes treating the hair with the hair cosmetic composition. The hair cosmetic composition of the present invention can provide benefits such as luster, manageability, pliability and elasticity to the hair which is apt to be dry, having lost water therefrom owing to damage by coloring, permanent waving, or repetitive excessive blow drying.

A hair warming tool is in the form of sheet and has at least one heating part in the center thereof and a margin around said heating part. It is designed to wrap tied hair in said heating part and to be held in place to keep the wrapping state by fastening the margin with a fastening means such as an elastic band, a string or a wire. A hair treating method comprises wrapping tied hair with a hair warming tool of sheet form having at least one heating part while leaving at least the part of the hair near the roots unwrapped to warm the hair.

Hair warming tool and hair treating method

A recording medium, showing sufficient resistance to contamination and having excellent reproducing characteristics, comprises a film provided on a surface thereof and this film comprises a copolymer formed by polymerizing a composition which comprises a compound A having a (meth)acryloyl group and a reactive antistatic agent B having a quaternary ammonium salt group, an alkylene glycol chain, a hydrocarbon group of which carbon number is four or more and a copolymerizable group.

Recording medium

An antistatic resin composition comprised of (A) a radiation-curable acrylic, methacrylic or epoxy compound having an --(OR)m-- chain and (B) a minor amount of a quaternary ammonium salt of the formula (1): ##STR1## wherein R and R.sub.4 are an alkylene group of 1 to 3 carbon atoms, R.sub.1, R.sub.2 and R.sub.3 independently represent an alkyl or alkenyl group having up to 20 carbon atoms, or an acryloyl or methacryloyl group, n is an integer of at least 4, and A.sup.- is a counter ion. The antistatic resin-forming composition is useful, for example, for a protective layer of an optical recording medium, which is formed on the light incident side of a substrate of the optical recording medium.

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Tokyo, Japan

Kenichi Ueyama