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    3.
    发明专利
    未知

    公开(公告)号：DE3784236D1

    公开(公告)日：1993-03-25

    申请号：DE3784236

    申请日：1987-12-22

    Applicant: BASF AG

    Inventor： SCHERZER DIETRICH DR ,  ZAHN ERWIN DR ,  FRANK WOLFRAM DR

    IPC: C08J9/04 ,  C08G18/00 ,  C08G18/70 ,  C08J9/36 ,  C08J9/40 ,  C08L75/04

    Abstract: Light flat moulded parts (I) are mfd. by treating porous materials (II) with an organic cpd. (III) contg. an effective amt. of NCO gps. and hardening, with shaping as required; the novelty is that (III) is used in aq. dispersion or emulsion, which is used to impregnate open-cell foam materials (IV) and then crosslinked. PU parts (I) have thickness, 0.1-40 mm; density, 0.015-0.25 g/cm3; tensile strength 100-500 kPa; elingation at break 10-70%; compression hardness, 10-100 kPa at 40% deformation; thermal flexural strength (DIN 53424), 100-160 deg.C.

    4.
    发明专利
    未知

    公开(公告)号：DE3700245A1

    公开(公告)日：1988-07-21

    申请号：DE3700245

    申请日：1987-01-07

    Applicant: BASF AG

    Inventor： SCHERZER DIETRICH DR ,  ZAHN ERWIN DR ,  FRANK WOLFRAM DR

    IPC: C08J9/04 ,  C08G18/00 ,  C08G18/70 ,  C08J9/36 ,  C08J9/40 ,  C08L75/04 ,  C08J9/02 ,  C08J9/42 ,  C08G18/14 ,  B29C35/02 ,  B29C67/20 ,  D06N3/14

    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/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 DEG C. to 180 DEG 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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