Process for the preparation of lightweight, planar molded articles
    29.
    发明授权
    Process for the preparation of lightweight, planar molded articles 失效
    制备轻质,平面成型制品的方法

    公开(公告)号:US4812368A

    公开(公告)日:1989-03-14

    申请号:US136990

    申请日:1987-12-23

    摘要: 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.

    摘要翻译: 本发明的主题是制备轻质,平面模塑制品的方法,例如, 通过处理多孔材料,优选开孔或柔性或半刚性聚氨酯泡沫,使用有效量的有机水分散体或乳液,厚度为0.1至40mm,密度为0.015至0.25g / cm3的那些 含有NCO基团的化合物,并允许异氰酸酯化合物任选地在25℃至180℃的温度和任选地在1至50巴的压力下固化。 本发明还涉及根据该方法制备的具有特殊机械性能的模塑制品。