Hydrated salt systems for controlled release of water in polyure

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

1990-05-31

1990-11-06

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521106, 521120, 521123, C08J 912

Patent

active

049687247

ABSTRACT:
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 containing at least two hydrated salts that release water at a temperature above 80.degree. C. By using at least an acidic salt and a basic 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).

REFERENCES:
patent: 3169826 (1965-02-01), Pond et al.
patent: 4882363 (1989-11-01), Neuhaus et al.

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