Japan Atomic Energy Agency

Japan Atomic Energy Research Institute

Other

Mitsuba Corporation

Kyushu Hitachi Maxell, Ltd.

Nippon Contact Lens Inc.

Masao Tamada

Naotsugu Nagasawa

Akihiro Hiroki

Noriaki Seko

Noboru Kasai

Toshiaki Yagi

Isao Kaetsu

Charito T Aranilla

Fumio Yoshii

Minoru Kumakura

Eiji Sakata

Machiko Takigami

Norihito Mizote

Akio Katakai

Takuji Kojima

Naoki Itoh

Yuichi Sato

Minoru Kamakura

Akio Ohta

Shigeru Yamanaka

Hisamichi Yamabayashi

Takayoshi Yamamoto

Haruyo Amada

Toshihiro Sato

A method of preparing a gel from carboxymethyl cellulose alkali metal salt, which is an anionic cellulose derivative, by using acid or acid solution. To increase the strength and the elasticity of a gel, a water-insoluble metal compound or organic reinforcement is added when mixing. The obtained gel is one of environmentally friendly type gels because the raw material is derived from plant.

Preparation of gels derived from carboxymethyl cellulose alkali metal salt

Gel for radiation dosimeter including a gel part (A) and a gel part (B) that become cloudy when exposed to a fixed dose or more, wherein said gel part (A) exposed to more than a specified dose above the fixed dose maintains a cloudy state regardless of the decrease in external temperature; and said gel part (B) exposed to less than the specified dose above the fixed dose changes gradually from a cloudy state into a transparent state according to the decrease in external temperature.

Gel for radiation dosimeter and radiation dosimeter which uses the same

A gel manufactured by irradiating ionizing radiation in the range of 5-1000 kGy to an obtained paste compound of a density of 10% by weight or more after adding water to carboxymethyl carrageenan and wherein each gram of dry gel obtained is capable of absorbing 20 grams or more of water. The ionizing radiation may be gamma rays, electron beams or X-rays.

Method of manufacturing gel using polysaccharides as raw materials

After adding water to the carboxymethyl carrageenan which is raw material and mixing them well, the ionizing radiation of more than fixed dose is irradiated to the obtained paste sample of fixed concentration. As a result, an excellent hydrogel in heat resistance which does not dissolve at 50&#xb0; C. or more can be obtained. The manufactured gel can be used for many kinds of products. Because this gel has a biodegradation characteristic, it is possible to dispose by composting.

A method of forming a zirconium-loaded fibrous adsorbent material having phosphoryl groups, the method including: grafting a reactive monomer having phosphoryl groups onto a polymeric substrate; and loading zirconium such that the zirconium-loaded fibrous adsorbent material has a zirconium content in an amount of 4.0 or 4.2 mmol/g.

Method of synthesizing zirconium-loaded fibrous adsorbent materials having phosphoryl groups and removal of objectionable substances using the adsorbents

[Problems to be Solved] To provide highly hydrous contact lenses having a cellulose derivative as an essential component. [Means to Solve the Problems] The highly hydrous contact lens formed by exposing a pasty mixture containing a cellulose derivative, a polymerizable compound couplable to the foregoing cellulose derivative, and water to radiation.

Contact lens and its manufacturing method

A surface-modified blade rubber includes a surface modified by being subjected to irradiation treatment that generates radical active sites in the blade rubber and polymerization for graft polymerization starting from a generated radical active site. A method for modifying a blade rubber surface includes subjecting rubber of a blade rubber to irradiation treatment that generates radical active sites and polymerization for graft polymerization starting from a generated radical active site.

Surface-modified blade rubber, wiper unit, and blade rubber surface modifying method

A zirconium-loaded fibrous adsorbent material having phosphoryl groups which is produced by first grafting a reactive monomer having phosphoryl groups onto a polymeric substrate and then loading zirconium. One or more methods of using the zirconium-loaded fibrous adsorbent material to recover arsenic, phosphoric ions, and/or fluoride ions are disclosed.

The high-frequency substrate is constructed of a base member and a conductor adhered to the base member, and the base member is composed of a polymer which is a fluoropolymer having a conductor-affinitive monomer graftpolymerized at a grafting percentage of 1% or less by weight. After reactive sites necessary for graftpolymerization are formed on a film of a fluoropolymer under an oxygen-free atmosphere by irradiating the film with an electron beam or the like, the fluoropolymer film is introduced into a solution of a conductor-affinitive monomer so as to cause graftpolymerization, and a conductor is adhered thereto to thereby produce a substrate, with a grafting percentage of the monomer to the fluoropolymer being 1% or less by weight in the graftpolymerization. The technique leads to the production of a high-frequency substrate having superior adhesion force with respect to the conductor.

High-frequency substrate and production method therefor

A zirconium-loaded fibrous adsorbent material having phosphoryl groups which is produced by first grafting a reactive monomer having phosphoryl groups onto a polymeric substrate and then loading zirconium.

A carrier for immobilization of microorganisms is prepared by impregnating a fabric such as cotton gauze having a mesh size of 10-50 with 20-50% by weight of a vinyl monomer such as ethlene glycol methacrylate and polymerizing the monomer with ionizing radiation to form a polymer coating on the fabric. A microorganism such as Trichoderma reesei is grown in a liquid culture medium in contact with the polymer-coated fabric and the polymer-coated fabric is recovered containing growing cells of the microorganism. The polymer-coated fabric has high air permeability and permits good diffusion of liquid culture medium.

Immobilization of growing microorganisms on polymer-coated cotton gauze

The efficiency of enzymatic saccharification and fermentation of cellulose in a waste cellulose resource can be increased by a preliminary treatment with ionizing radiation. This irradiation of the waste cellulose resource can be accelerated by the preliminary addition of an aqueous alkali solution.

Growing community of inventors

Takasaki, Japan

Masao Tamada