Patent Number: 
Section: claims

1. A epoxy resin composition which, when cured, provides a transparent product having a high neutron shielding capability, said epoxy resin composition comprising a 4,4xe2x80x2-isopropylidenecyclohexanol type epoxy resin, without any non-transparent inorganic substance, and a hardener, said epoxy resin composition having a viscosity at ambient temperatures of less than 7000 mPaxc2x7s and being curable at said temperatures. 2. The epoxy resin composition of  claim 1 , wherein said hardener is selected from the group consisting of aliphatic amine, alicyclic amine, heterocyclic amine, heterocyclic diamine and modified products thereof. claim 1 3. A transparent neutron shield material produced from the epoxy resin composition which, when cured, provides a transparent product having a high neutron shielding capability, said epoxy resin composition comprising a 4,4xe2x80x2-isopropylidenecyclohexanol type epoxy resin, without any non-transparent inorganic sustance, and a hardener, said epoxy resin composition having a viscosity at ambient temperatures of less than 7000 mPaxc2x7s and being curable at said temperatures. 4. The transparent neutron shield material of  claim 3 , wherein said hardener is selected from the group consisting of aliphatic amine, alicyclic amine, heterocyclic amine, heterocyclic diamine and modified products thereof. claim 3 5. The transparent neutron shield material of  claim 3  comprising a single body comprising a transparent mold and said epoxy resin composition. claim 3