Patent Number: 045307830
Section: claims

1. Composition of matter suitable for solidifying radioactive wastes, said composition being formed of unsaturated polyester resins comprising: (a) maleic anhydride and/or maleic acid and/or fumaric acid;  (b) isophthalic acid and/or terephthalic acid;  (c) neopentylglycol;  (d) optionally one or more conventional glycols chosen from the group consisting of ethylene glycol and 1,2-propylene glycol,  (a) maleic anhydride and/or maleic acid and/or fumaric acid;  (b) isopropylidene-bis-(phenyleneoxy-propanol-2)  (c) optionally one or more conventional glycols, chosen from the group consisting of ethylene glycol, 1,2-propylene glycol, and neopentyl glycol,  (a) preparing a solution and/or suspension and/or emulsion composition of claim 1 by means of a stirring system, the ratio of said composition to the aqueous radioactive waste to be blocked being higher than 40:60 by weight  (b) hardening the obtained emulsion by copolymerization of the olefinic double bonds of the resins and of the ethylenically unsaturated monomer in the presence of polymerization initiators. 2. Composition of matter according to claim 1, characterized by the fact that the amount by weight of the aforesaid component (III) with respect to the total of the composition of matter is comprised between 15% and 60%. 3. Process for solidifying radioactive wastes 4. Solid articles obtained by the process of claim 3. 5. Solid articles according to claim 4 characterized by the fact they contain the radioactive material in the form of occluded aqueous particles.