Denki Kagaku Kogyo Kabushiki Kaisha

Mebiol Inc.

Denki Kagaku Kogyo Kk

Other

Mori, Yuichi

Akihiro Okamoto

Tetsuro Maeda

Yuichi Mori

Hiroshi Yoshioka

Tomoyoshi Mizutani

Susumu Ohoka

Shigeki Miura

Fukuaki Wada

Shinya Ohtsubo

Makiko Kubota

Manabu Fujii

Yasuo Yoshii

Isamu Nishinakagawa

Yoshimitsu Shimizu

Takashi Nomoto

Kyoji Onaya

Prior art technology has a problem in that when a plant is cultivated for a long period of time on a PVA film having its lower surface positioned in contact with a nutrient fluid, plant roots that have formed penetrate through the film. A plant cultivation system wherein the PVA film has an equilibrium degree of swelling in the range of from 125 to 250% as measured in water at 30&#xb0; C. and has a loss tangent (tan &#x3b4;) in the range of from 0.005 to 0.2 as measured in an equilibrium swollen state in water at 30&#xb0; C., and a method for cultivating a plant by using this plant cultivation system. Plant cultivation can be performed for a long period of time while avoiding infection by bacteria and the like causative of plant diseases. Therefore, the present invention is useful in, e.g., agriculture and the manufacture of pharmaceuticals.

Plant cultivation system and a method for plant cultivation

To provide a system for producing safe and high nutrition vegetables at low cost. A plant cultivation system for cultivating a plant on a nonporous hydrophilic film, which comprises a nonporous hydrophilic film and a feeding means for supplying water or a nutrient fluid to the lower surface of the film in the absence of a hydroponic tank for accommodating water or a nutrient fluid and cultivating a plant therein. As the feeding means, use is made of a water absorbing material which is in contact with the film and which is disposed between the film and a water impermeable material. A system for producing safe and high nutrition vegetables at low cost can be obtained by disposing the water impermeable material directly on ground soil, whereupon the water absorbing material and an irrigation tube are disposed, followed by disposing the film thereon.

Plant cultivation system

A device having a shape capable of receiving the plant body to be cultivated. As at least a portion of the device, a film which can substantially be integrated with the root of the plant body is disposed. Such a structure can provide a plant-cultivating device, a plant-film integrate, and a plant-cultivating method which can preferably attain both of the supply of oxygen and the supply of water and a fertilizer component to the root of the plant body.

Plant-cultivating device and plant-cultivating method

A thermoplastic resin composition composed of a mixture comprising a graft polymer obtained by subjecting a monomer mixture of an aromatic vinyl monomer and a vinyl cyanide monomer to emulsion polymerization in the presence of a diene rubber latex, and a hard polymer obtained by copolymerizing a monomer mixture of an aromatic vinyl monomer and a vinyl cyanide monomer, in which the number average particle size Dn of diene rubber particles contained in the composition is at most 0.1 .mu.m, the ratio (Dw/Dn) of the weight average particle size Dw to the number average particle size Dn of the diene rubber particles is at least 5.0, the graft rate of said graft polymer is at least 60%, and the content of an emulsifier and a reaction product of an emulsifier is not higher than 2% by weight.

Thermoplastic resin composition

A molded article of a transparent ABS resin comprising 10 to 24% by weight of a diene type rubber having a weight average particle size of 150 m.mu. or less and not containing methyl methacrylate in the continuous resin phase is subjected to wet plating. The resulting plated resin article has an excellent adhesion of the plating layer and a good transparency.

Plated resin article

Disclosed is a wet-platable acrylonitrilebutadiene-styrene resin (ABS resin) composition comprising 100 parts by weight of an ABS resin and 0.1 to 10 parts by weight of a compound represented by the following general formula [I]: ##STR1## wherein R.sub.1 stands for an alkyl group, R.sub.2 and R.sub.3 each stand for a hydrogen atom or a methyl group, R.sub.4 and R.sub.5 stand for a hydrogen atom or a group --C(O)R.sub.6 in which R.sub.6 stands for an alkyl group, and m and n are integers of from 1 to 20. A plated resin article having an improved plating adhesion can be obtained by wet-plating a molded article formed from this ABS resin composition.

Resin composition and plated article thereof

A thermoplastic resin composition consists essentially of (A) 100 parts by weight of a rubber-containing styrene type resin and (B) 1 to 45 parts by weight of a polymeric substance selected from the group consisting of a homopolymer of an acrylic acid ester, copolymers of an acrylic acid ester, and a mixture of these polymers, said component (B) having a solubility parameter of from 8.4 to 9.8 (cal/c.c.).sup.1/2, a glass transition temperature of 20.degree. C. or below, a gel content of 70% by weight or below, and relative viscosity of a substance soluble in methylethyl ketone of 20 or below.

An ABS resin composition comprises 100 parts by weight of an ABS resin having a melt index of at least 4.0 g/10 min. and a rubber content of from 10 to 28% by weight and from 0.5 to 30 parts by weight of powder of at least one metal selected from aluminum, copper and an copper alloy.

Growing community of inventors

Yokohama, Japan

Akihiro Okamoto