Kao Corporation

Masayoshi Ehara

Masaaki Shimoda

Toshimasa Hamai

Takashi Kodate

Kazuhisa Fukuhara

Kyoichi Shirota

Kenichi Ueyama

Daisuke Hamada

Masato Oshika

Yoshiaki Tanisho

Yoshihiko Watanabe

Yoshikazu Morii

Kayoko Kitada

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 hair cosmetic composition containing a polyether polycarbonate having a structural unit represented by the following formula (1): [wherein A represents a C2 to C6 alkylene group; n represents an average number of 5 to 1,000; p represents an average number of 5 to 100; and (n&#xd7;p) units of AO may be the same or not]. 

Hair cosmetic composition

The invention provides an additive for hydraulic compositions, which exhibits an excellent viscosity reducing effect on a hydraulic composition, for example, a hydraulic composition containing a slurry of water and hydraulic powder, and is excellent in operativeness when used as an aqueous solution. The additive for hydraulic compositions contains a phosphoric monoester having a specific group such as an alkyl ether group or a salt thereof (monoester) and a phosphoric diester having a specific group such as an alkyl ether group or a salt thereof (diester) in a monoester weight content of monoester/(monoester+diester) is 0.4 to 0.95 (diester includes a pyrodiester).

Additive for hydraulic compositions

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Darmstadt, Germany

Masayoshi Ehara