Uninhibited bentonite composition
Patent 4668724 Issued on May 26, 1987. Estimated Expiration Date: 
June 12, 2005. 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.
June 12, 2005. 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 References 3533125 Thermoplastic elastomeric composition, product and method of manufacture Aqueously-swelling water stopper and a process of stopping water thereby Uninhibited bentonite composition Uninhibited bentonite composition Patent #: 4534926 InventorAssigneeApplicationNo. 06/744030 filed on 06/12/1985US Classes:524/108, Two or more chalcogen atoms in the same hetero ring428/543, MISCELLANEOUS (E.G., TREATED SURFACES, ETC.)524/322, Acyl group of the carboxylic acid or derivative has at least fifteen carbon atoms, e.g., stearic acid, etc.524/445, Clay, e.g., fullers earth, fire clay, etc.524/446, With water NRM524/477, At least two solid hydrocarbons524/490, Hydrocarbon having a specified name, molecular weight or chain length524/491, Hydrocarbon having a specified viscosity524/594With phenol or inorganic phenolateExaminersPrimary: Lilling, Herbert J.Attorney, Agent or FirmInternational ClassesC09K 3/10 (20060101)C09J 123/02 (20060101) C09J 123/00 (20060101) C09D 5/34 (20060101) AbstractThe present invention relates to a non-hydrated bentonite intimately contacted with a polypropene, polybutene, or mixtures thereof to provide a formable and shapable non-aqueous bentonite composition particularly useful as a water barrier. The bentonite composition can be extruded in the form of a rope, rod, sheet or the like and is sufficiently tacky for adherence to a wall or conduit, floor or roof in areas of potential water flow to prevent the seepage of water through the bentonite composition. In one embodiment, the bentonite composition includes a polypropene and a polybutene and an elastomer, such as butyl rubber, having sufficient resilience to stretch or expand with the expanding bentonite upon hydration and to aid in maintaining the structural integrity and cohesiveness of the composition. In another embodiment, the composition comprises bentonite, an elastomer, and any plasticizer compatible with the elastomer.Field of SearchClay, e.g., fullers earth, fire clay, etc.With water NRM Kaolin or bentonite Hydrocarbon having a specified name, molecular weight or chain length Hydrocarbon having a specified viscosity Interpolymer with at least one aliphatic hydrocarbon monomer, e.g., butyl rubber, etc. At least two solid hydrocarbons Two or more chalcogen atoms in the same hetero ring | |
