Kao Corporation

Yoshiyuki Muroi

Yoshinao Kono

Masanori Tanahashi

Tomohiro Uemura

Yasushi Katayama

Yoshinori Murakami

Rikio Tsushima

Kazuhiko Kato

Manabu Tonomura

Ryozo Nakai

Shoji Ohtani

Mitsuyoshi Kashiwagi

Takao Okajima

Kouji Maeda

The invention provides an oral preparation or a chewing gum comprising an organic acid and/or inorganic acid and a fluoride ion supplying compound, wherein a light scattering layer is formed inside enamel of the teeth when the oral preparation or the chewing gum is applied to teeth. An internal tooth colored layer in the enamel is masked by the light scattering layer, and a white appearance is imparted to the teeth.

Oral preparation and chewing gum

A keratotic plug remover composition comprising a polymer compound having a salt forming group is disclosed. The composition according to the invention can effectively remove keratotic plugs in the skin pores, so that the conspicuousness of the skin pores is mitigated and clean and healthy skin pores can be maintained. The composition does not hurt the skin.

Keratotic plug remover

The dentifrice composition includes capsule particles containing agar as a main component of a coat-forming substance and having an average particle size of from 0.3 to 3 mm, and vehicles for use in oral cavity. It may further contain nonionic surfactants and/or water-insoluble abrasive granules as desired.

Dentifrice composition

A copolymer of an olefin and maleic anhydride is produced in the form of particles by co-polymerizing an olefin having 2 to 8 carbon atoms with maleic anhydride in a solvent capable of dissolving both co-monomers, but incapable of dissolving the copolymer in the presence of a dispersant of an oil-soluble, cationic copolymer comprising (a) ethylenically unsaturated monomer units having cationic groups of a quaternary ammonium salt and (b) lipophilic, ethylenically unsaturated monomer units. It has a relatively uniform particle size distribution

Process for preparing particles of olefin-maleic anhydride copolyer

Growing community of inventors

Tokyo, Japan

Yoshiyuki Muroi