PROBLEM TO BE SOLVED: To provide an oxygen absorbent made of a resin material which has excellent oxygen absorbency, generates a small amount of odor in accordance with oxygen absorption, has excellent heat resistance and prevents deterioration as a molding material in accordance with oxygen absorption.SOLUTION: An oxygen absorbent contains, as an active ingredient, a cyclized conjugated diene polymer obtained by cyclization reaction of a conjugated diene polymer having a vinyl bond content in a conjugated diene unit of 60 mol% or more. An oxygen-absorbing laminate comprises an oxygen-absorbing layer including the oxygen absorbent, a sealant layer laminated on a first surface side of the oxygen-absorbing layer, and an oxygen barrier layer laminated on a second surface side of the oxygen-absorbing layer.COPYRIGHT: (C)2014,JPO&INPIT【課題】酸素吸収性に優れ、酸素吸収に伴って発生する臭気が少なく、耐熱性に優れ、さらには酸素吸収に伴う成形材料としての劣化が防止された樹脂材料からなる酸素吸収剤を提供すること。【解決手段】共役ジエン単位におけるビニル結合含量が60モル%以上である共役ジエン重合体を環化反応させてなる共役ジエン重合体環化物を有効成分とする酸素吸収剤。また、その酸素吸収剤を含んでなる酸素吸収層、酸素吸収層の第1の面側に積層されるシーラント層、および酸素吸収層の第2の面側に積層される酸素バリア層を含んでなる酸素吸収性積層体。【選択図】なし
