RU2000102901A

RU2000102901A - COMPOSITION OF MINERAL WOOL

Info

Publication number: RU2000102901A
Application number: RU2000102901/03A
Authority: RU
Inventors: МЕРЕНГО Ален ДЕ; Жан-Люк Бернар; Фабрис ЛАФФОН
Original assignee: Изовер Сэн-Гобэн
Priority date: 1998-05-06
Filing date: 1999-05-04
Publication date: 2002-01-20

Claims

1. Mineral wool, capable of dissolving in a physiological environment, characterized in that it includes the following components with an indication of their quantity, wt. %:
SiO ₂ - 38-52%, preferably at least 40%, especially 41-48%
Al ₂ O ₃ - 16-23%, preferably 17-21%
RO (CaO + MgO) - 4-15%, preferably 5-12%
R ₂ O (Na ₂ O + K ₂ O) - 16-25%, preferably 17-22%
In ₂ O ₃ - 0-10%, especially at least 1%, preferably 3-9%
Fe ₂ O ₃ (total iron) - 0-3%, preferably 0-1.5%
P ₂ O ₅ - 0-3%, preferably 0-1.5%
TiO ₂ - 0-2%
2. Mineral wool according to claim 1, characterized in that it contains CaO in an amount between 4 and 11%.

3. Mineral wool according to one of the preceding paragraphs, characterized in that it contains MgO in an amount between 0.1 and 7%, especially between 0.3 and 6.5%.

4. Mineral wool according to one of the preceding paragraphs, characterized in that it respects the ratio
MgO / CaO≥0.8 especially ≥1 or 1.05.

5. Mineral wool according to one of paragraphs. 1-3, characterized in that it respects the ratio
CaO / MgO≥1.25, especially ≥5 or ≥10.

6. Mineral wool according to one of the preceding paragraphs, characterized in that it contains Na ₂ O in an amount of at least 12%, especially between 13 and 19.5%.

7. Mineral wool according to one of the preceding paragraphs, characterized in that it contains K ₂ O in an amount of at least 0.5%, especially between 0.5 and 8%.

8. Mineral wool according to one of the preceding paragraphs, characterized in that it respects the ratio
R ₂ O / RO> 1.8, especially between 2 and 4.

9. Mineral wool according to one of the preceding paragraphs, characterized in that it contains
SiO ₂ + Al ₂ O ₃ in an amount of at least 60%, especially 61-67%.

10. Mineral wool according to one of the preceding claims, characterized in that it has a temperature T _log2.5 and / or a temperature T _log3 and a liquid transition temperature T _liq such that the difference (T _log2.5 -T _liq or (T _log3 -T _liq ) is at least 10 ^{° C.} , especially at least 20 ^{° C.} and preferably at least 40 ^° C.

11. Mineral wool according to one of the preceding paragraphs, characterized in that it has a dissolution rate of at least 30 ng / cm ² per hour when measured in tests at pH 4.5 and at least 30 ng / cm ² per hour when measured in tests at pH 7.5.

12. Mineral wool according to one of the preceding paragraphs, characterized in that it has a dissolution rate of at least 30 ng / cm ² per hour when measured in tests at pH 4.5 and at least 30 ng / cm per hour when measured in tests at pH 6.9.

13. Mineral wool according to one of the preceding paragraphs, characterized in that it has a dissolution rate of at least 60 ng / cm ² per hour when measured in tests at pH 4.5 and / or at least 40 ng / cm ² per hour when measured in tests at pH 7.5 and / or at least 40 ng / cm ² per hour when measured in tests at pH 6.9.

14. Mineral wool according to one of the preceding paragraphs, characterized in that it is obtained using internal centrifugation.

15. Heat and / or soundproofing product or substrate for growing plants without soil, including at least partially mineral wool according to one of the preceding paragraphs.