Process for impregnating a concrete or cement body with a polymeric material
Patent 4828761 Issued on May 9, 1989. Estimated Expiration Date: 
May 4, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 4, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesProcess for disposal of aqueous solutions containing radioactive isotopes Method for encasing waste barrels in a leachproof closed sheath Patent #: 4222889 InventorsAssigneeApplicationNo. 07/188325 filed on 05/04/1988US Classes:588/4, With additional solid material to enhance fixation of radioactivity106/236, With solvent or dispersing medium106/239, Hydrocarbon containing523/129, Composition containing nonresinous organic material derived from municipal solid waste disposal system or process of preparing523/207, Solid polymer or solid polymer-forming system is encapsulated in or impregnated in a nonreactant material523/211, Reactant or catalyst is material encapsulated or impregnated523/375, Radioactive or Group VIIIA atom containing NRM524/2, Water settable inorganic compound as nonreactive material524/650, Inorganic water settable material containing524/8, Solid polymer derived from ethylenically unsaturated hydrocarbon only588/8Polymer derived from ethylenically unsaturated monomerExaminersPrimary: Locker, Howard J.Attorney, Agent or FirmInternational ClassesC04B 41/00 (20060101)G21F 9/16 (20060101) AbstractA process for impregnating cementitious solids with polymeric materials by blending polymeric materials in a grout, allowing the grout to cure, and contacting the resulting solidified grout containing the polymeric materials with an organic mixture containing a monomer, a cross-linking agent and a catalyst. The mixture dissolves the polymerized particles and forms a channel for distributing the monomer throughout the network formed by the polymeric particles. The organic components are then cured to form a substantially water-impermeable mass. | |
