Sumitomo Chemical Company, Limited

Yoshihiro Takebayashi

Takao Ishiwatari

Nobuhito Ueda

Toshiro Otsubo

Shugo Nishi

Atsushi Watanabe

Yoshinori Shono

Kousei Kuroda

Shoji Maruyama

A coated granule is obtained by coating a bioactive substance-containing granule with a urethane resin obtained by reaction of an aromatic diisocyanate with a polyol mixture containing a polyesterpolyol and a C2-C8 polymethylene glycol, wherein the molar ratio of the polyesterpolyol to the polymethylene glycol is 1:20 to 20:1. The granule is capable of controlling elution of the bioactive substance appropriately, and the urethane resin forming the coating film shows degradability in soil.

Granule coated with urethane resin

A microencapsulated insect growth regulating composition comprising an insect growth regulation active ingredient in a wall formed of polyurethane or polyurea, having an average particle diameter of 1 to 40 &#x3bc;m, a wall thickness of 0.005 to 0.5 &#x3bc;m, a ratio of a wall thickness/an average particle diameter of 0.0003 to 0.003, and a volume ratio of microencapsulated particles having a particle diameter of not less than 50 &#x3bc;m of not more than 20% by volume based on a total volume of microencapsulated particles sufficiently exerts efficacy of the active ingredient, i.e., the insect growth regulation activity.

Insect growth regulating composition

The present invention provides a microencapsulation method of a solid substance and the microencapsulated composition obtained from said method of: (i) preparing a dispersion phase comprising (a) a solution containing a substance which forms a middle layer and (b) a solid substance that is insoluble or difficult to dissolve in said solution, (ii) obtaining a solid substance which has a layer made of the substance which forms the middle layer by phase-separating the substance which forms the middle layer from the solution and (iii) reacting a monomer that is polymelizable by condensation in the presence of the solid substance that has a layer made of the substance which forms the middle layer. The above method can efficiently microencapsulate pharmaceutical active ingredients, pesticidal ingredients, aroma active ingredient and so on that are solid substances and affords an efficacious microencapsulated composition of solid substances.

Method for microencapsulating of a solid substance

A microencapsulation method of a biologically active solid substance that is characterized by polymerizing a monomer that is polymerizable by condensation in a dispersion containing i) a solution containing a nonionic substance and ii) the biologically active solid substance that is insoluble or difficult to dissolve in said solution, wherein the nonionic substance is effective for dispersing the biologically active substance in said solution, is an effective method for producing a microencapsulated composition without aggregation.

Method for microencapsulating a solid substance

The present invention provides a shampoo composition effective for control of ectoparasites, particularly for extermination of lice. The shampoo composition may contain 0.001% to 5% by weight of pyriproxyfen, 10% to 70% by weight of an anionic surfactant, 0.5% to 20% by weight of a polyhydric alcohol, and optionally 1% to 8% by weight of a pyrethroid compound.

Shampoo composition

An arthropod repellent composition containing a monoterpenediol compound selected from carane-3,4-diol-and p-menthane-3,8-diol and a pyrethroid compound selected from phenothrin and permethrin as active ingredients and an inert carrier exhibits an outstandingly high arthropod repellency for a long period of time.

Growing community of inventors

Toyonaka, Japan

Yoshihiro Takebayashi