Denka Company Limited

Denki Kagaku Kogyo Kabushiki Kaisha

Tohoku University

Akira Miyama

Toru Arai

Mutsumi Matsumoto

Shigeru Suzuki

Ayumu Tsukamoto

Masaru Hasegawa

Takashi Sasaki

Hitoshi Kaneko

Yoko Horikoshi

Yoshihiko Tsujimura

Kunihiko Konishi

Atsushi Masamune

Takeshi Kanno

Yularo Arata

[Problem] To provide electroconductive resin compositions that accommodate energy devices and have excellent preservability, and molded articles thereof. [Solution] An electroconductive resin composition and a molded article thereof, the composition containing components: (A) a hydrogenated styrene-based thermoplastic elastomer having an MFR (measured at a temperature of 230° C. and a load of 2.16 kg) of 1 g/10 min or less, at 100 parts by mass; and (B) an oil at 100-1,000 parts by mass; the composition further containing components: (C) a copolymer of a hydrophobic polymer and a hydrophilic polymer, the copolymer having an MFR (measured at 190° C. and a load of 2.16 kg) of 8 g/10 min or more; and (D) an ionic liquid.

Electroconductive resin composition and molded article of same

An artificial blood vessel that gives a sensation of needle insertion upon puncturing and a needle thread passability resembling those of blood vessels of animals including humans, and that has high liquid leakage preventability includes two or more layers which contain a component (A) hydrogenated block copolymer and a component (B) oil, at least one of the layers further containing a component (C) lubricant. It is preferable that the artificial blood vessel has a first peak load value of 0.01 N or more and 1.2 N or less upon needle penetration by puncturing at a speed of 1000 mm/min. under the condition of 23° C.±1° C. using a universal testing machine.

Artificial blood vessel

Disclosed is an ulcer model used to practice a procedure including hemorrhage arrest, the ulcer model including a model main body which includes upper and lower surfaces facing each other and a tubular simulated blood vessel path provided between the upper surface and the lower surface and having an inlet opening and an outlet opening. The upper surface includes a ring-shaped raised surface that rises in a thickness direction of the model main body and a simulated ulcer surface that is a recessed bottom surface surrounded by the raised surface. The simulated blood vessel path extends from a part other than the upper surface of the surfaces of the model main body to the simulated ulcer surface or an area in the vicinity of the inside thereof.

Ulcer model used to practice procedure including hemorrhage arrest

[Problem] To provide a resin composition that can lead to a biological model, which has a softness and provides a sensation of needle insertion close to those of human blood vessels and/or skin, and a biological model using the same. [Solution] A resin composition containing, with respect to 100 parts by mass of a component (A) hydrogenated block copolymer having a MFR (temperature 230° C., load 2.16 kg) of 1 g/10 min or less: 350 parts by mass or more and 1000 parts by mass or less of a component (B) oil; and 0.01 parts by mass or more and less than 150 parts by mass of a component (C) lubricant. The component (B) oil preferably has a kinematic viscosity of 0.1-100 mm/s at 37.8° C. or 40° C.

Resin composition and biological model using same

[Problem] To provide a softer resin material that can be highly filled with an oil and that has almost no seepage (bleed-out) of oil. Additionally, to provide a biological model that is easy to handle and that has a softness and mechanical properties closer to those of organs and a texture close to that of organs. [Solution] A resin composition containing 100 parts by mass of component (A), a hydrogenated block copolymer having an MFR (measured at a temperature of 230&#xb0; C. and with a load of 2.16 kg) of 1 g/10 min or less; more than 1000 parts by mass and at most 2000 parts by mass of component (B), an oil; and at least 10 parts by mass and at most 120 parts by mass of component (C), a polyolefin resin having a specific surface area of 0.01 to 30 m/g.

Resin composition and biological model

[Problem] To provide a thermoplastic resin composition for use in an organ model, wherein said composition has a softness closer to that of an organ, a high mechanical strength, and a texture close to an organ, exhibits excellent durability, and can be handled easily. [Solution] A resin composition for an organ model, said composition containing, as component (A), 100 parts by mass of a hydrogenated block copolymer having an MFR (measured at a temperature of 230&#xb0; C. and a load of 2.16 kg) of 1 g/10 min. or less, and an oil as component (B). Moreover, the composition may also contain a cross copolymer as component (C), a polypropylene resin as component (D), and a filler as component (E).

Resin composition for organ models

By using CNF excellent in dispersibility, conductivity, and crystallinity, a conductive polymer material having high conductivity even with a low CNF content and a shaped article thereof and a conductive polymer material with a less CNF content for same conductivity and a shaped article thereof are provided. A conductive polymer material with high conductivity is produced by using carbon nanofiber with a median diameter D50 value from 0.1 to 8 &#x3bc;m, powder resistivity of 0.03 &#x3a9;cm or less measured under a load of 9.8 MPa, and D/G from 0.5 to 1.3.

Conductive polymer material and molded article using same

To provide a novel cross copolymer and resin composition which are improved in heat resistance and compatibility over conventional ethylene/aromatic vinyl compound copolymers and which have low crystallinity, are excellent in softness, transparency and compatibility and show mechanical properties similar to soft vinyl chloride resins, as compared with conventional cross copolymers. A process for producing a cross copolymer, which comprises a coordination polymerization step and a subsequent anionic polymerization step, wherein in the coordination polymerization step, copolymerization of an olefin monomer, an aromatic vinyl compound monomer and an aromatic polyene is carried out by using a single-site coordination polymerization catalyst to synthesize an olefin/aromatic vinyl compound/aromatic polyene copolymer, and then, in the anionic polymerization step, polymerization is carried out in the coexistence of such an olefin/aromatic vinyl compound/aromatic polyene copolymer and an anionic polymerizable vinyl compound monomer by using an anionic polymerization initiator.

Process for production of cross copolymers, cross copolymers obtained by the process, and use thereof

Disclosed is a thermoplastic resin composition comprising a cross-copolymer which meets specific requirements; and a polyphenylene ether resin, wherein the cross-copolymer is contained in an amount of 5 to 95 mass % and the polyphenylene ether resin is contained in an amount of 95 to 5 mass %. The thermoplastic resin composition has excellent heat resistant, excellent softness, excellent flexibility, excellent stretching properties, and excellent scratch-abrasion resistance.

Growing community of inventors

Machida, Japan

Akira Miyama