Patent ID: 11945745
Assignee: KNAUF INSULATION SPRL
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 14:
15. The method of claim 1, wherein the second batch material comprises fibers comprising:
55 to 75 wt % SiO2, and
5 to 20 wt % of the combination of CaO and MgO, and
5 to 20 wt % of the combination of Na2O and K2O, and
0 to 5 wt % Al2O3, and
0 to 2 wt % total iron expressed as Fe2O3, and
an alkali/alkaline-earth ratio expressed in terms of wt % of alkali metal oxides/wt % of alkaline-earth metal oxides which is >1.