Cementitious compositions
Patent 4240840 Issued on December 23, 1980. Estimated Expiration Date: 
April 26, 1998. 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.
April 26, 1998. 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 3030258 3169877 3215549 3483007 3716386 3788869 3824107 Cementitious compositions Patent #: 4070199 InventorsAssigneeApplicationNo. 05/900309 filed on 04/26/1978US Classes:106/696, Organic material containing106/711, Mineral fibers or glass fibers containing (e.g., slag wool, cotton wool, mineral wool, rock wool, etc.)106/716, With mica, talc, cinder, glass, vermiculite, coke breeze or kiln dust106/726, Cellulose or silica containing (e.g., sand, etc.)106/780, Cellulose (e.g., wood, cork, bark, etc.)106/782, Slag, cinder, mica, talc, glass, boron or elemental carbon containing524/5, Derived from carboxylic acid or derivative524/8Solid polymer derived from ethylenically unsaturated hydrocarbon onlyExaminersPrimary: Poer, JamesAttorney, Agent or FirmInternational ClassesC04B 28/06 (20060101)C04B 28/02 (20060101) C04B 28/00 (20060101) Foreign Application Priority Data1975-10-28 GBAbstractCementitious compositions having a modulus of rupture greater than 20 MN/m2 are prepared by subjecting a mixture of hydraulic cement, fine aggregate, a selected water-dispersible polymer and water to a homogenization process (in order to very substantially reduce voidage in the product) and by thereafter curing and drying the product. The aggregate improves the modulus of rupture and resists any loss in this strength property due to moisture uptake and loss. | |
