VERFAHREN ZUR HERSTELLUNG VON MELAMIN/FORMALDEHYD-SCHAUMSTOFFEN
    7.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON MELAMIN/FORMALDEHYD-SCHAUMSTOFFEN 有权
    用于生产三聚氰胺/甲醛泡沫

    公开(公告)号:EP2616505A1

    公开(公告)日:2013-07-24

    申请号:EP11824666.9

    申请日:2011-08-31

    Applicant: BASF SE

    CPC classification number: C08J9/30 C08G12/32 C08J2201/026 C08J2361/28

    Abstract: The invention relates to processes for producing melamine-formaldehyde foams comprising the consecutive steps a) and b): a) heating a mixture comprising a melamine-formaldehyde precondensate, a curative and a blowing agent to foam up and crosslink said mixture, and b) tempering the foam obtained in step a), wherein it is essential to the present invention that - step a) utilizes a precondensate which has a melamine:formaldehyde molar ratio in the range from 1:2.1 to 1:3.9, and - which has a sulfite group content, based on the total weight of the melamine-formaldehyde precondensate, in the range from 0% to 1% by weight, and - said tempering in step b) is effected at a temperature in the range from 230 to 290°C, and also to melamine-formaldehyde foams obtainable according to the processes of the invention, and to uses thereof.

    ANTIMIKROBIELL MODIFIZIERTER MELAMIN/FORMALDEHYD-SCHAUMSTOFF
    9.
    发明公开
    ANTIMIKROBIELL MODIFIZIERTER MELAMIN/FORMALDEHYD-SCHAUMSTOFF 有权
    抗菌改性三聚氰胺/甲醛泡沫

    公开(公告)号:EP2134774A1

    公开(公告)日:2009-12-23

    申请号:EP08717323.3

    申请日:2008-03-03

    Applicant: BASF SE

    Abstract: The present invention relates to a method for the production of a foam comprising at least one antimicrobial active agent, comprising the following steps: (1) producing a solution or dispersion comprising at least one pre-condensate 10 of the foam to be produced, and at least one antimicrobial active agent, (2) foaming the pre-condensate by heating the solution or dispersion from step (1) in order to obtain a foam having at least one antimicrobial active agent, and (3) tempering the foam obtained in step (2) at a temperature of 120 to 300°C. The invention further relates a foam produced in this manner, a molded part comprising such a foam, and the use of such a foam for the heat and sound insulation of buildings and building parts, for the heat and sound insulation of the interior spaces of vehicles and aircraft, for low temperature insulation, as an insulating wall covering, as an insulating and impact damping packaging material, as abrasively acting cleaning, grinding, and polishing sponges, in the hygiene sector, and as filter material.

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