Patent ID: 8920714

Claim:
A corrosion protection composition comprising: (a) a self-expanding foam and a gas phase corrosion inhibitor in combination with said self-expanding foam; (b) wherein said self-expanding foam comprises a first component and a second component, and wherein said gas phase corrosion inhibitor is combined with said second component prior to combining with said first component; (c) further wherein said first component comprises a cyanate (—NCO) ion containing compound and an isocyanate compound, wherein the isocyanate compound comprises 2,4-tolylene diisocyanate; 2,6-tolylene diisocyanate; p-phenylene diisocyanate; polymethylene polyphenylisocyanate; diphenyl-methane diisocyanate; m-phenylene diisocyanate; hexamethylene diisocyanate; butylene-1,4-diisocyanate; octamethylene diisocyanate; 3,3′-dimethoxy-4,4′-biphenylene diisocyanate; 1,18-octadecamethylene diisocyanate; polymethylene diisocyanate; benzene triisocyanate; naphthylene-2,4-diisocyanate; 3,3′-dimethyl-4,4′-biphenylene diisocyanate; 1-methoxy phenylene-2,4-diisocyanate; diphenylene-4,4′-diisocyanate; 4,4′-diisocyanate diphenyl ether; naphthylene-1,5-diisocyanate; diisocyanate-dicyclohexyl-methane; p-xylylene diisocyanate; xylylene diisocyanate; hydrogenated diphenylene diisocyanate; hydrogenated diphenyl methane diisocyanate; toluene-2,4,6-triisocyanate; 3,-methyl-4,6,4′-triisocyanate diphenyl methane; 2,4,4′-triisocyanate diphenyl; 2,4,4′-triisocyanate diphenyl ether; and mixtures thereof; (d) further wherein said second component comprises a polyol compound, a blowing agent, a catalyst, a surfactant, and a fire retardant agent; (e) wherein said gas phase corrosion inhibitor comprises organic compounds, inorganic compounds and mixtures thereof; and (f) wherein said gas phase corrosion inhibitor comprises from about two (2) to about ten (10) percent by weight of said corrosion protection composition.