MINERAL WOOL ANALYSIS Russian patent published in 2005 - IPC

FIELD: mineral fibers.

SUBSTANCE: invention provides mineral wool capable of dissolving in physiological media, which contains following components, wt %: SiO₂ 38-47.54; Al₂O₃ 20-23; SiO₂+Al₂O₃ 56-75, preferably 62-72; RO, (CaO and/or MgO) 9-26, preferably 12-25; MgO 4-20; MgO/CaO ≥ 0.8; R₂O (Na₂O+K₂O) 3.4< R₂O < 10; P₂O₅ 0-5; Fe₂O₃ (total iron) >1.7, preferably >2; B₂O₃ 0-5; MnO 0-4; TiO₂ 0-3; and 0.2 < R₂O/Al₂O₃ < 0.8.

EFFECT: enhanced biodegradation ability and ability of wool to fiber formation via "internal" centrifugation.

13 cl, 1 tbl