Process for the preparation of lightweight, planar molded...

Details Process for the preparation of lightweight, planar molded... Process for the preparation of lightweight, planar molded...

B - Operations, Transporting

32

B

18/650

B32B 5/18 (2006.01) C08G 18/70 (2006.01) C08J 9/40 (2006.01)

Patent

CA 1277815

PROCESS FOR THE PREPARATION OF LIGHTWEIGHT, PLANAR MOLDED ARTICLES Abstract of The Disclosure The subject of this invention is a process for the preparation of lightweight, planar molded articles, e.g. those having a thickness from 0.1 to 40 mm and having a density of 0.015 to 0.25 g/cm3, by treating porous materials, preferably open celled or flexible or semi-rigid polyurethane foams, with an effective amount of an aqueous dispersion or emulsion of organic compounds containing NCO groups and allowing the isocyanate compound to cure, optionally while molding, at a temperature from 25°C to 180°C and optionally at a pressure of 1 to 50 bar. The invention also relates to molded articles prepared according to this process which have special mechanical properties.

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