Glass fibers resistant to basic media and their application to reinforcing of cement
US4835122A · kind A · utility
7Cited by
6References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 28, 1986 |
| Grant date | May 30, 1989 |
| Priority date | — |
| Expiry date | Jan 28, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C13/002
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to glass fiber compositions and fibers having use as a reinforcement element of cement-base products. As such, the composition is able to resist attack of strongly basic media. The fibers of the invention comprise the following constituents, in proportions by weight: PA1 SiO.sub.2 --56 to 68%, PA1 ZrO.sub.2 --14 to 17%, PA1 Na.sub.2 O--12 to 20%, PA1 K.sub.2 O--0 to 8%, PA1 Al.sub.2 O.sub.3 --1 to 9%, and wherein the sum of Na.sub.2 O and K.sub.2 O is between 14 and 22%, and wherein the sum of SiO.sub.2 and Al.sub.2 O.sub.3 is less than 70%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.