Gypsum microfiber sheet material
US5401588A · kind A · utility
82Cited by
38References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1993 |
| Grant date | Mar 28, 1995 |
| Priority date | — |
| Expiry date | Dec 21, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/614
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The novel composition of the present invention comprises a paper-like sheet material or a non-woven mat which contains water-insoluble gypsum anhydrite microfibers and a cellulosic binder, such as cellulose fibers, optionally with glass fibers, which has surprising fire-retardant properties. Typical paper processing methods or wet process mat techniques are utilized in preparing this material. The flexible gypsum microfiber sheet or mat of this invention may be used as microfiber insulation, particularly in a fire retardant barrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.