BPB Limited Patent applications |
Patent application number | Title | Published |
20120322904 | Lightweight Gypsum Products Having Enhanced Water Resistance - The product is produced from a settable aqueous calcium sulphate dispersion which has a water to solids ratio of less than 0.4 to 1, and has distributed therethrough lightweight hollow bodies having water-impervious surfaces (such as expanded polystyrene beads). The dispersion contains a hydratable cement (such as calcium sulpho aluminate) which is capable of hydration in the presence of the calcium sulphate dispersion. The hydratable cement is such that it reacts with excess water in the dispersion thereby enhancing the water resistance of the resulting product. | 12-20-2012 |
20120073899 | Laminated Acoustic Soundproofing Panel - A laminated acoustic building panel comprises a pair of plasterboard substrates ( | 03-29-2012 |
20120058356 | Gypsum Based Formulations - The formulation for making plasterboard with paper cover sheets comprises finely divided gypsum, a minor amount by weight of starch and, as crosslinking agent for the starch, a tri-functional reactive s-triazine having substituents at positions 2, 4 and 6 of the triazine ring which are reactive with the starch. A preferred crosslinking agent is 2,4,6-trichloro-s-triazine, which is preferably partially reacted with the starch before further reaction with the paper cover sheets for the plaster board. | 03-08-2012 |
20110280041 | LUMINOUS PLATE - This board is a complex including a rigid support covered with a luminous fabric. The rigid support has a front face, a rear face, a first edge, and a second edge opposite the first edge. The luminous fabric at least partly covers the front face of the rigid support, extending from the first edge toward the second edge, and includes optical fibers extending over the front face of the rigid support substantially perpendicular to the first edge and the second edge. First ends of the optical fibers are bent around the first edge toward the rear face of the rigid support, and a gripping element are provided on the first edge and form a clamp for gripping the bent parts of the optical fibers and the first edge of the rigid support. | 11-17-2011 |
20110228548 | LUMINOUS PARTITION - This interior wall includes at least one cladding panel ( | 09-22-2011 |
20110113961 | PLASTER-BASED MATERIAL INCLUDING AN AGENT CAPABLE OF TRAPPING FORMALDEHYDE - The present invention relates to a plaster-based material which includes an agent capable of trapping formaldehyde, in particular a plasterboard intended for the interior fittings of residential buildings. | 05-19-2011 |
20100288415 | Gypsum Based Compositions - A gypsum stucco composition comprising the following components finely divided; calcium sulphate hemihydrate in calcined solid beta crystalline form; and in intimate mixture with said finely divided calcium sulphate hemihydrate and mixed therewith no later than calcination to form the hemihydrate, a sulphate salt comprising at least one of ammonium sulphate and aluminium sulphate, in an amount such that when the stucco composition is mixed with water and allowed to set, the resulting set plaster has increased compressive strength, flexural strength and/or E-modulus compared to a set plaster produced from said finely divided calcium sulphate hemihydrate containing no said sulphate salt. | 11-18-2010 |