Glass yarn for reinforcing organic and/or inorganic materials
US7811954B2 · kind B2 · utility
11Cited by
9References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2005 |
| Grant date | Oct 12, 2010 |
| Priority date | — |
| Expiry date | Apr 3, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C3/091
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to glass reinforcement strands, the composition of which comprises the following constituents in the limits defined below, expressed as percentages by weight: 59 to 63% SiO2; 10 to 16% Al2O3; 16 to 23% CaO; 1 to 3.2% MgO; 0 to 2% Na2O+K2O+Li2O; 0 to 1% TiO2; 0.1 to 1.8% B2O3; 0 to 0.5% Li2O; 0 to 0.4% ZnO; 0 to 1% MnO; and 0 to 0.5% F. These strands have improved properties in terms of mechanical strength, acid resistance and high-temperature resistance for a low-cost composition. The invention also relates to a process for producing the said strands and to the composition allowing them to be produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.