Kao Corporation

Yoko Hanada

Yasunori Hosokawa

Tadashi Igarashi

Isao Tsuru

Seiichi Miyanaga

Tatsuya Yamada

Hisakazu Furugaki

Takayuki Amiya

Nakako Sato

Hiromi Ito

Takashi Koudate

A method for producing a liquid developer containing toner particles containing a resin containing a polyester and a pigment, and an insulating liquid, wherein the toner particles are dispersed in the insulating liquid, including: step 1: melt-kneading the resin and the pigment, and pulverizing a melt-kneaded mixture to provide toner particles; step 2: dispersing the toner particles obtained in the step 1 in the insulating liquid in the presence of a basic dispersant to provide a dispersion of toner particles; and step 3: wet-milling the dispersion of toner particles obtained in the step 2 to provide a liquid developer, wherein the basic dispersant is an amide compound obtained by a reaction between a polyethyleneimine and a polyester (D) obtained by self-condensation of 12-hydroxystearic acid. The liquid developer obtained by the method of the present invention can be suitably used in development of latent images formed in, for example, an electrophotographic method, an electrostatic recording method, an electrostatic printing method, or the like.

Method for producing liquid developer

The invention provides hair cosmetics which can suppress a frictional feeling of hair in running water during rinsing to improve softness and smoothness thereby preventing the hair from being damaged by twisting during rinsing, and comprises organopolysiloxane having an amino-modified organopolysiloxane chain and a polyoxyalkylene chain, and at least one cationic surfactant selected from compounds represented by formula (1) or (2): wherein at least one of R, R, Rand Rrepresents e.g. an alkyl group containing 8 to 35 carbon atoms in total, and the remainder represents a C1 to C5 alkyl group, hydroxyalkyl group etc., Xrepresents a halogen ion or an organic anion, Rrepresents e.g. an alkyl group containing 8 to 35 carbon atoms in total, and Rrepresents a C1 to C22 alkyl group etc.

Cosmetic hair preparation

Superabsorbent resin composition

The superabsorbent resin composition of the present invention comprises (A) a superabsorbent resin and (B) a metal compound obtained by mixing a hydroxy acid or a salt thereof and a polyvalent metal salt or polyvalent metal alkoxide having at least one metal selected from the group consisting of titanium and zirconium. The method for producing a superabsorbent resin composition comprises mixing the components (A) and (B).

Superabsorbent resin composition and method for producing the same

A super absorbent polymer composition comprising a chelating compound (A) which has a site capable of forming a chelate with a copper ion and whose copper salt has a solubility in physiological saline at 25&deg; C. of 0.01% by weight or less and a super absorbent polymer (B), wherein the chelating compound (A) is present in an amount of from 0.0001 to 30 parts by weight per 100 parts by weight of said super absorbent polymer (B).

Super absorbent polymer composition

A process for producing polymer particles comprising polymerizing a water-soluble polymerizable monomer in a system comprising a hydrophobic organic solvent inert to the polymerization and an aqueous solution of the water-soluble polymerizable monomer, the process being characterized in that the polymerization is carried out in the presence of, as a dispersant, an anionic surface active agent represented by formula (I): ##STR1## wherein R.sup.1 represents a straight-chain or branched alkyl, alkenyl or 2-hydroxyalkyl group having 5 to 29 carbon atoms; M.sup.1 and M.sup.2, which may be the same or different, each represent an alkali metal ion, an ammonium ion or a hydrogen atom; and n represents 1 or 2.

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Wakayama, Japan

Yoko Hanada