34.
    发明专利
    未知

    公开(公告)号:DK158232C

    公开(公告)日:1990-09-10

    申请号:DK136381

    申请日:1981-03-26

    Applicant: BASF AG

    Abstract: A process for the manufacture of a resilient foam based on a melamine-formaldehyde condensate, wherein an aqueous or alcoholic solution or dispersion containing a melamine-formaldehyde precondensate, an emulsifier, a blowing agent and a hardener is foamed by ultra-high-frequency irradiation and the foam is hardened by crosslinking the precondensate. The foam may be employed for heat and sound insulation, and as a packaging material.

    35.
    发明专利
    未知

    公开(公告)号:NO154843C

    公开(公告)日:1987-01-07

    申请号:NO811029

    申请日:1981-03-26

    Applicant: BASF AG

    Abstract: A process for the manufacture of a resilient foam based on a melamine-formaldehyde condensate, wherein an aqueous or alcoholic solution or dispersion containing a melamine-formaldehyde precondensate, an emulsifier, a blowing agent and a hardener is foamed by ultra-high-frequency irradiation and the foam is hardened by crosslinking the precondensate. The foam may be employed for heat and sound insulation, and as a packaging material.

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