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    Process for the production of a foamed article.
    8.
    发明公开
    Process for the production of a foamed article. 审中-公开
    赫尔斯特朗·赫斯特伦

    公开(公告)号：EP2039489A1

    公开(公告)日：2009-03-25

    申请号：EP07117005.4

    申请日：2007-09-21

    Applicant: Recticel

    Inventor： Bracke, Kristiaan

    IPC: B29C44/12 ,  B29C44/22

    CPC classification number: B29C44/1209 ,  B29C44/22 ,  B29C44/5618 ,  C08J9/405 ,  C08J2205/05 ,  C08J2375/04 ,  C08J2461/00 ,  C08J2475/00

    Abstract: The foamed article is produced starting from a core layer (1) which comprises a flexible, open-cell foam having voids forming at least 90% of the volume of the open-cell foam. The core layer (1) is applied in a mould (6, 8), optionally together with an upper (3) and/or a lower cover layer (2), between a lower (5) and an upper mould surface (9) thereof. The mould (6, 8) is closed and a curable, foamable composition (7) is allowed to foam in the mould to produce a further foam filling the voids of the open-cell foam. In order to enable to use less foamable composition (7) to fill the voids of the open-cell foam, the core layer (1) is laid onto the lower mould surface (5) and the foamable composition (7) is sprayed onto the core layer (1) lying onto the lower mould surface so that the foamable composition (7) can penetrate at least partially by gravity into the open-cell foam core layer (1). Moreover, the foamable composition (7) has a dynamic viscosity, measured at a shear rate of 1/s, of lower than 1000 mPa.s when arriving onto the core layer (1).

    Abstract translation: 泡沫制品从核心层（1）开始制造，该芯层包括具有形成开孔泡沫体积的至少90％的空隙的柔性开孔泡沫。 将核心层（1）可选地与上部（3）和/或下部覆盖层（2）一起施加在模具（6,8）中，在下部（5）和上部模具表面（9）之间， 它们。 封闭模具（6,8），并使可固化的可发泡组合物（7）在模具中发泡以产生填充开孔泡沫体的空隙的另外的泡沫。 为了能够使用较少的可发泡组合物（7）以填充开孔泡沫的空隙，将芯层（1）铺设在下模具表面（5）上，将可发泡组合物（7）喷涂到 芯层（1）位于下模具表面上，使得可发泡组合物（7）可以至少部分地通过重力穿透到开孔泡沫芯层（1）中。 此外，当到达芯层（1）时，可发泡组合物（7）具有在1 / s剪切速率下测得的低于1000mPa.s的动态粘度。

    MODIFIZIERTE OFFENZELLIGE SCHAUMSTOFFE UND VERFAHREN ZU IHRER HERSTELLUNG
    10.
    发明公开
    MODIFIZIERTE OFFENZELLIGE SCHAUMSTOFFE UND VERFAHREN ZU IHRER HERSTELLUNG 有权

    公开(公告)号：EP1819760A2

    公开(公告)日：2007-08-22

    申请号：EP05810889.5

    申请日：2005-11-26

    Applicant: BASF AKTIENGESELLSCHAFT

    Inventor： KARL, Ulrich ,  FRENZEL, Stefan ,  SCHWENDEMANN, Volker ,  STEINBRENNER, Ulrich ,  LEININGER, Hartmut

    IPC: C08J9/40

    CPC classification number: C08J9/40 ,  C08J9/405 ,  C08J2205/05

    Abstract: The invention relates to a method for producing modified open-cell foams consisting in bringing into contact (a) open-cell foams whose density ranges from 5 to 500 kg/m3 and average pore diameter ranges from 1νm to 1mm with (b) an aqueous formulation of at least one type of compound containing at least one half-aminal or aminal group per molecule or at least one type of polymer, in which at least one type of comonomer containing an OH or β-dicarbonyl or epoxy group is incorporated by polymerisation.

    Abstract translation: 本发明涉及一种生产改性开孔泡沫塑料的方法，该方法包括使（a）密度范围为5-500kg / m 3，平均孔径范围为1μm-1mm的开孔泡沫与（b）含水 每个分子含至少一个半缩醛或缩醛基团的至少一种类型的化合物或至少一种类型的聚合物的制剂，其中至少一种含有OH或β-二羰基或环氧基团的共聚单体通过聚合引入 。

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