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US 6,284,684 B1Granted
Mineral wool composition
AssigneeIsover Saint-Gobain
InventorsSerge Vignesoult, Fabrice Lafon, Jean-Luc Bernard
Life of this patent
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Abstract
Mineral wool capable of dissolving in a physiological medium, which mineral wool comprises the constituents below in the following percentages by weight: SiO2 39-55%, preferably 40-52% Al2O3 16-27%, ″ 16-25% CaO 3-35%, ″ 10-25% MgO 0-15%, ″ 0-10% Na2O 0-15%, ″ 6-12% K2O 0-15%, ″ 3-12% R2O (Na2O + K2O) 10-17%, ″ 12-17% P2O5 0-3%, ″ 0-2% Fe2O3 0-15%, B2O3 0-8%, ″ 0-4% TiO2 0-3%, and in that MgO is between 0 and 5%, especially between 0 and 2%, when R2O≦13.0%.
Claims28
A mineral wool capable of dissolving in a physiological medium, comprising the constituents:
- 39 to 55% by weight SiO2,
- 16 to 27% by weight Al2O3,
- 3 to 35% by weight CaO,
- 0 to 15% by weight MgO,
- 0 to 15% by weight Na2O,
- 0 to 15% by weight K2O,
- 10 to 17% by weight R2O(Na2O+K2O),
- 0 to 3% by weight P2O5,
- 0 to 15% by weight Fe2O3,
- 0 to 8% by weight B2O3, and
- 0 to 3% by weight TiO2, wherein
- MgO is between 0 and 5% when R2O≦13.0%.
9 more elements
Dependencies are inferred from the claim text.