Kao Corporation

Makoto Tsuji

Ichiro Mori

Satoshi Sugawara

Hiromi Nambu

Takashi Itoi

Yukio Inomata

Yasushi Sasaki

Katsushi Maeda

Satoshi Ishioka

Makoto Inoue

The present invention discloses a material for an absorbent article, the material having an organic hydrophobic antimicrobial agent and a hydrophilic non-volatile organic solvent. The material for an absorbent article is preferably manufactured by a method having a step of applying an antimicrobial agent solution to a material for an absorbent article, the antimicrobial agent solution being formed by dissolving an organic hydrophobic antimicrobial agent in a hydrophilic non-volatile organic solvent. The present invention also discloses an absorbent article in which the material for an absorbent article is used. The absorbent article is preferably manufactured by using a method having a step of making an absorbent core contain an antimicrobial agent solution formed by dissolving an organic hydrophobic antimicrobial agent in a hydrophilic non-volatile organic solvent.

Material for absorbent article, method for manufacturing same, and absorbent article using same

The invention provides a polymer composite particle having superb blending stability even in a W/O emulsion cosmetic, a highly effective ultraviolet protection effect and a good feeling in use. The invention also relates to a method of producing the polymer composite particle and a cosmetic composition containing the polymer composite particle. A preferred polymer composite particle contains a metal oxide coated with a silicone and/or fluorine compound and has an average particle diameter of 1 &#x3bc;m or less, wherein the polymer composite particle is obtained by polymerizing a crosslinking agent with a vinyl monomer contained in an amount of 25% by weight based on 100% by weight of the sum of total of all the monomers and crosslinking agent and wherein the vinyl monomer has a solubility parameter calculated by the Fedors method of less than about 8.9. A preferred cosmetic composition may contain (A) a microparticle metal oxide having an average primary particle diameter of from 0.001 to 0.1 &#x3bc;m, and (B) a flake zinc oxide having an average primary particle size of from 0.1 &#x3bc;m to 1 &#x3bc;m and an average thickness of from 0.01 &#x3bc;m to 0.2 &#x3bc;m, which provides ultraviolet protection ability and visible-light transmittance.

Polymer composite particle comprising metal oxide and silicone and/or fluorine and method of producing the same

To provide a process for producing polymer particles which are spherical and have smooth surfaces and small contents of oil- and the solvent-soluble at the time of being compounded. Polymer particles are produced by adding 0.099 to 47 parts by mass of a crosslinking vinyl monomer to 100 parts by mass of a vinyl monomer (referred to hereinafter as the monomer) during polymerization reaction at a degree of monomer polymerization of 1 to 100% in order to polymerize the monomer in a solvent in the presence of a dispersant and a polymerization initiator to give polymer particles.

Process for producing polymer particles

Growing community of inventors

Wakayama, Japan

Makoto Tsuji