Compositions: coating or plastic – Coating or plastic compositions – Contains fireproofing or biocidal agent
Reexamination Certificate
2005-06-20
2008-09-30
Wood, Elizabeth D (Department: 1793)
Compositions: coating or plastic
Coating or plastic compositions
Contains fireproofing or biocidal agent
C252S601000, C252S607000
Reexamination Certificate
active
07429290
ABSTRACT:
The present invention relates to a fire-resistant coating and method thereof, which confers enhanced flame and heat resistance to substrate such as building materials. The invented coating is especially applicable to cellulose-based building materials including but not limited to fiberboards, wallboards, roofing materials, particleboards, ceiling tiles, soundproofing boards and hardboards. This novel composition is also useful in providing a fire-resistant coating for concrete, metals, foamed polymeric materials, gypsum and other substrates. A preferred embodiment generally comprising: mono potassium phosphate, magnesium oxide, silica powder, calcium silicate, rice hull ash and water. A method for imparting fire-retardancy to substrates using the invented composition is also described.
REFERENCES:
patent: 4871477 (1989-10-01), Dimanshteyn
patent: 5194087 (1993-03-01), Berg
patent: 6090315 (2000-07-01), Bai
patent: 6787495 (2004-09-01), Lally
patent: 7045476 (2006-05-01), Lally
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