Sprayable fireproofing composition
US4981521A · kind A · utility
17Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 1988 |
| Grant date | Jan 1, 1991 |
| Priority date | — |
| Expiry date | May 9, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K21/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Fire retardant coatings for metal structural members are obtained by spraying onto the structural members settable plaster compositions which are air-containing pumpable aqueous slurries of plaster, clay prill aggregate, cellulose and glass fiber reinforcement and foaming agent. The specially prepared clay prill aggregate has a low aspect ratio of near unity and is an acceptable substitute for the exfoliated vermiculite aggregate of prior coating compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.