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US 5,843,854 AGranted
Mineral fibre composition
AssigneePartek Paroc OY AB
InventorsKirsti Marjatta Karppinen, Michael Stig Folke Perander, Peter Arnold Henrik Solin, Antero Olavi Pehkonen, Seija Marketta Maine
Life of this patent
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Abstract
A mineral fibre composition which is soluble in biological fluids contains substantially 45-65% by weight of SiO.sub.2 15-40% by weight of CaO 0-20% by weight of MgO 0-6% by weight of Na.sub.2 O+K.sub.2 O and in addition aluminium and/or iron oxides as well as phosphorus oxide in such amounts that the weight ratio of P.sub.2 O.sub.5 to the sum of Al.sub.2 O.sub.3 and iron oxide is circa 0.4 to 6.
Claims3
Mineral fiber composition which is soluble in biological fluids, consisting essentially of
- ______________________________________ SiO.sub.2 49-56% by weight Al.sub.2 O.sub.3 0.5-1.7 " Fe.sub.2 O.sub.3 0-4 " CaO 25-35 " MgO 0-15 " Na.sub.2 O + K.sub.2 O 0-6 " P.sub.2 O.sub.5 0.5-5 " ______________________________________
Dependencies are inferred from the claim text.