C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
403/9
C09D 5/18 (2006.01) C09D 3/48 (1980.01)
Patent
CA 1115000
ABSTRACT The invention is concerned with paints which will intumesce as a result of thermal decomposition to a carbon- aceous residue in the presence of an expanding agent liberating an incombustible gas, the formation of the carbonaceous residue being promoted by a dehydrating agent typically a phosphoric acid source. The novel paint is essentially characterised by the use of certain water- insoluble nitrogen-containing compounds fulfilling the dual role of carbon source and intumescing agent. These nitrogen- containing compounds are either cyclic amine/aldehyde condensation products (with ring N) or the reaction products of polyisocyanates with organic compounds having reactive hydrogen. Typical intumescing agents generating their own carbonaceous residue according to the invention are conden- sation products of ethylene-urea with formaldehyde, and of melamine or glycerol with toluylene diisocyanate.
312878
Bertelli Guido
Locatelli Renato
Roma Pierpaolo
Montedison S.p.a.
Stewart & Kolash Ltd
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