Abstract: A structural body has an inner layer formed of a resin which does not transmit light with a specific wavelength, an outer layer stacked on the inner layer and formed of a resin which transmits the light with the specific wavelength, and a fine periodic structure provided on at least part of a surface of the inner layer facing the outer layer and having a plurality of photodecomposition generated convex and concave portions. The plurality of convex and concave portions of the fine periodic structure is formed alternatively, and horizontally and vertically with substantially equal intervals in between along the surface of the inner layer facing the outer layer.

Abstract: An oxygen absorbing resin comprising a carbon atom bonded to a carbon to carbon double bond group and further bonded to one hydrogen atom, the carbon atom contained in an alicyclic structure, which oxygen absorbing resin having been exposed to radiation. Further, there is provided an oxygen absorbing resin comprising a carbon atom bonded to both of the structure (a) carbon to carbon double bond group and (b) heteroatom-containing functional group or, as a bonding group derived from the functional group, carbon to carbon double bond group or aromatic ring, and further bonded to one or two hydrogen atoms, the carbon atom contained in an alicyclic structure.

Abstract: Laser marking is surely conducted on the second and subsequent layers of a structural body with a multilayer structure, whereby a marked part can be prevented from being marred, fouled, falsified or erased, as well as marking can be conducted in a variety of colors. A structural body 10 including an inner layer 12 and an outer layer 11 stacked, wherein said inner layer 12 is formed of a resin which does not transmit light with a specific wavelength and said outer layer 11 is formed of a resin which transmits light with the specific wavelength, and a fine periodic structure 14 in the form of convexes and concaves formed by generation of photodecomposition is provided on at least part of the surfaces 13 of the inner layer 12 which is opposite to the outer layer 11.

Abstract: The present invention herein provides an oxygen-absorbing resin composition which is excellent in the oxygen-absorbability and which can inhibit any deterioration through oxidation during the molding operations of the composition and does not accordingly undergo any coloration during the molding operations. The present invention thus provides an oxygen-absorbing resin composition characterized in that it comprises (A) a hydrogenated styrene-diene copolymer; (B) a thermoplastic resin including ethylenic structural units in its molecular structure; and (C) a transition metal catalyst, wherein the oxidation of the thermoplastic resin (B) proceeds while the copolymer (A) serves as a trigger and the composition thus absorbs oxygen. In this respect, the copolymer (A) comprises carbon-carbon double bonds derived from the diene in an amount ranging from 1×10.5 to 1×10.2 eq/g.

Abstract: An oxygen absorbing resin comprising a carbon atom bonded to a carbon to carbon double bond group and further bonded to one hydrogen atom, the carbon atom contained in an alicyclic structure, which oxygen absorbing resin having been exposed to radiation. Further, there is provided an oxygen absorbing resin comprising a carbon atom bonded to both of the structure (a) carbon to carbon double bond group and (b) heteroatom-containing functional group or, as a bonding group derived from the functional group, carbon to carbon double bond group or aromatic ring, and further bonded to one or two hydrogen atoms, the carbon atom contained in an alicyclic structure.

Abstract: The present invention herein provides an oxygen-absorbing resin composition which is excellent in the oxygen-absorbability and which can inhibit any deterioration through oxidation during the molding operations of the composition and does not accordingly undergo any coloration during the molding operations. The present invention thus provides an oxygen-absorbing resin composition characterized in that it comprises (A) a hydrogenated styrene-diene copolymer; (B) a thermoplastic resin including ethylenic structural units in its molecular structure; and (C) a transition metal catalyst, wherein the oxidation of the thermoplastic resin (B) proceeds while the copolymer (A) serves as a trigger and the composition thus absorbs oxygen. In this respect, the copolymer (A) comprises carbon-carbon double bonds derived from the diene in an amount ranging from 1×10?5 to 1×10?2 eq/g.