Mitsubishi Heavy Industries Limited

Nobuo Ishihara

Noriya Hayashi

Katsunari Ohsono

Masahiro Kishi

Kiichiro Sakashita

Yoshiyuki Tasaka

Wataru Kawamura

Kiyoshi Ono

Makio Atsumi

Kikuo Okazaki

A neutron shield material that exhibits high heat resistance and ensures neutron shielding capacity. A composition for neutron shield material excelling in heat resistance and ensuring neutron shielding capacity is provided by comprising a hydrogenated bisphenol type epoxy of the formula: (1) (wherein each of Rto Ris independently selected from the group consisting of CH, H, F, Cl and Br, and n=0 to 2), a hardening agent component having at least one cyclic structure and two or more amino groups, a density increasing agent and a boron compound.

Neutron shielding material composition, shielding material and container

A cask includes a trunk body that includes a basket having a square pipe or a plate member forming a cell that contains a spent fuel assembly, and a neutron shield that is formed by filling a composition for neutron shielding between the trunk body and an outer cover surrounding the trunk body. The composition includes a refractory material, a density increasing agent, and a neutron shielding material composed mainly of a polymer.

Cask, composition for neutron shielding body, and method of manufacturing the neutron shielding body

The present invention provides a process for the decomposition of a polyester which can accelerate the reaction for decomposing the polyester to form monomers serving as raw materials or raw material derivatives. This process for the decomposition of a polyester is characterized in that the polyester is decomposed by solvolysis with methanol to form a dimethyl carboxylate and a dihydroxy compound, and these decomposition products are added to and mixed with a melt of the polyester for the purpose of decomposing the polyester by solvolysis.

Polyester decomposition process and polyester monomerization system

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Takasago, Japan

Nobuo Ishihara