Oxygen-Absorbing Resin, Oxygen-Absorbing Resin Composition and Oxygen-Absorbing Container

Abstract

Disclosed is an oxygen-absorbing resin which exhibits excellent oxygen absorption performance even in the absence of a transition metal catalyst. Specifically disclosed is an oxygen-absorbing resin which is composed of a copolyester obtained by copolymerizing at least the following monomers (A)-(C). Monomer (A): a dicarboxylic acid or a derivative thereof having a carbon atom bonded to both the structures (a) and (b) below and also bonded to one or two hydrogen atoms, wherein the carbon atom is contained in an alicyclic structure (a) a carbon-carbon double bond group (b) any one of a functional group containing a heteroatom or a linking group derived from such a functional group, a carbon-carbon double bond group and an aromatic ring Monomer (B): at least one selected from the group'consisting of a dicarboxylic acid having an aromatic ring or a derivative thereof, and a hydroxycarboxylic acid having an aromatic ring or a derivative thereof Monomer (C): a diol

1 - 14 . (canceled) 
   
   
       15 . An oxygen-absorbing resin which is obtainable by copolymerizing at least the following monomers (A′) and (B′) and has a glass transition temperature in the range of −8 to 15° C.:
 monomer (A′): a monomer 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-carbon double bond group; and 
 (b) either a heteroatom-containing functional group, a bonding group derived therefrom, a carbon-carbon double bond group, or an aromatic ring; and 
   monomer (B′): a monomer comprising an aromatic ring.   
   
   
       16 . The oxygen-absorbing resin according to  claim 15 , wherein the monomer (A) is a dicarboxylic acid or a derivative thereof. 
   
   
       17 . The oxygen-absorbing resin according to  claim 15 , wherein the monomer (B′) is at least one of a dicarboxylic acid comprising an aromatic ring, a derivative thereof, a hydroxycarboxylic acid comprising an aromatic ring, or a derivative thereof. 
   
   
       18 - 24 . (canceled) 
   
   
       25 . The oxygen-absorbing resin according to  claim 17 , wherein the rate of the alicyclic structure derived from monomer (A′) in the oxygen-absorbing resin is 0.6 to 7.0 meq/g.