Process for the preparation of lightweight, planar molded articl

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

1987-12-23

1989-03-14

Anderson, Philip

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

264134, 264321, 4284231, B32B 518, B32B 524, C08J 716, B29C 6720

Patent

active

048123684

ABSTRACT:
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/cm.sup.3, 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.degree. C. to 180.degree. 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.

REFERENCES:
patent: 4451310 (1984-05-01), Lairloup
patent: 4508774 (1985-04-01), Grabhoefer et al.

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