Fire resistant cellulosic materials and rendering such cellulosic materials leach resistant
US6235347A · kind A · utility
10Cited by
17References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1998 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | Apr 24, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31996
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A process for preparing a fire-resistant cellulosic material which comprises contacting cellulosic material with an aqueous solution of aluminum phosphate wherein the molar ratio of aluminum to phosphorous is less than 1:1, optionally containing a metal oxide, to form an initially treated cellulosic material containing aluminum phosphate and an increased amount of water, removing water from and curing said initially treated cellulosic material to form a fire-resistant cellulosic material. The cellulosic material is preferably wood and the wood is preferably a shingle or plywood.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.