Hydrated salt systems for controlled release of water in...

Details Hydrated salt systems for controlled release of water in... Hydrated salt systems for controlled release of water in...

C - Chemistry, Metallurgy

08

J

C08J 9/08 (2006.01) C08J 9/02 (2006.01)

Patent

CA 2043392

HYDRATED SALT SYSTEMS FOR CONTROLLED RELEASE OF WATER IN POLYURETHANE FOAMS Abstract of the Disclosure Novel polyurethane resin foam compositions are provided which are only water-blown and require no halocarbon blowing agents, yet suffer no degradation in physical properties. The formulations include a hydrated salt system containing at least two hydrated salts that release water at a temperature above 80°C. By using at least an acidic salt and abasic salt, the pH of the salt system may be balanced. A preferred hydrated salt system is a combination of borax (sodium tetraborate decahydrate) and alum (aluminum potassium sulfate dodecahydrate).

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