Patent ID: 7910185

Claim:
An oxygen absorbing resin comprising a carbon atom bonded to both of the following structures (a) and (b) and further bonded to one or two hydrogen atoms, the carbon atom being contained in an alicyclic structure: (a) a carbon to carbon double bond group; and (b) either a heteroatom-containing functional group or a bonding group derived from the functional group, a carbon to carbon double bond group, or an aromatic ring, wherein the resin is a polycondensedpolymer prepared from a derivative of tetrahydro-phthalic acid or tetrahydro-phthalic anhydride as a starting material and the derivative of tetrahydro-phthalic acid or tetrahydro-phthalic anhydride comprises a derivative of Δ 3 -tetrahydro-phthalic acid or Δ 3 -tetrahydro-phthalic anhydride.