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Calcium sulphate-based products having enhanced water resistance
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BPB Limited, Walton, Richard Ian and Fisher, Robin (2011) Calcium sulphate-based products having enhanced water resistance. WIPO: World Intellectual Property Organization no.WO/2010/133898 [Online]. Available at: http://www.wipo.int/patentscope/search/en/WO201013....
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Official URL: http://www.wipo.int/patentscope/search/en/WO201013...
Abstract
A water-resistant calcium sulphate based body comprises a matrix of crystalline calcium sulphate anhydrite, crystals of the matrix being connected to one another by water-resistant phosphate bonding zones, optionally also containing aluminium. The body can be produced by impregnating a porous calcium sulphate with a source of phosphate ions (optionally containing aluminium), and then calcining. Alternatively, a paste comprising calcium sulphate and a source of phosphate ions (optionally containing aluminium) is heated or compressed to form a 'green body' and then calcined to produce the body.
| Item Type: | Patent | ||||
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| Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) |
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| Divisions: | Faculty of Science > Chemistry | ||||
| Library of Congress Subject Headings (LCSH): | Calcium sulfate -- Permeability, Phosphates, Binding sites (Biochemistry), Porosity | ||||
| Publisher: | WIPO: World Intellectual Property Organization | ||||
| Place of Publication: | Geneva | ||||
| Official Date: | 25 November 2011 | ||||
| Dates: |
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| DOI: | WO/2010/133898 | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Open Access |
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