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    VERFAHREN ZUR HERSTELLUNG VON MELAMIN/FORMALDEHYD-SCHAUMSTOFFEN
    3.
    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

    Inventor： BAUMGARTL, Horst ,  WESTER, Bettina ,  SCHIERHOLZ, Jens-Uwe

    IPC: C08J9/00 ,  C08L61/28

    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.

    VERFAHREN ZUR HERSTELLUNG VON MELAMIN/FORMALDEHYD-SCHAUMSTOFFEN
    6.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON MELAMIN/FORMALDEHYD-SCHAUMSTOFFEN 有权
    VERFAHREN ZUR HERSTELLUNG VON MELAMIN / FORMALDEHYD-SCHAUMSTOFFEN

    公开(公告)号：EP2892640A1

    公开(公告)日：2015-07-15

    申请号：EP13758772.1

    申请日：2013-08-23

    Applicant: BASF SE

    Inventor： GROß, Bernd ,  BAUMGARTL, Horst ,  SCHIERHOLZ, Jens-Uwe ,  WESTER, Bettina ,  WOLF, Peter ,  VATH, Bernhard ,  NESSEL, Peter ,  HAHN, Klaus ,  STEINKE, Tobias Heinz

    IPC: B01F17/00 ,  C08G12/32 ,  C08J9/00 ,  C08J9/36 ,  C11D1/83 ,  C11D1/831

    CPC classification number: C08J9/0033 ,  B29C44/20 ,  B29K2081/00 ,  B29L2031/00 ,  C08J9/0023 ,  C08J9/14 ,  C08J9/30 ,  C08J2361/28 ,  C08L61/28

    Abstract: The invention relates to methods for producing melamine/formaldehyde foams, comprising the method steps of: a) producing an aqueous mixture M1) that comprises 100 parts by weight of at least one melamine/formaldehyde pre-condensate, 2 to 4 parts by weight of at least one hardener, 0.2 to 5 parts by weight of a surfactant mixture, 0.1 to 5 parts by weight of at least one salt of an inorganic acid or a salt of an organic carboxylic acid, 1 to 40 parts by weight of at least one blowing agent, 0 to 5 parts by weight of at least one colouring agent and/or optical brightener, 0 to 20 parts by weight of one or more further additives, and 25 to 60 parts by weight of water, b) heating and foaming the mixture M1) using microwave radiation, c) crosslinking and hardening the foam that has been formed, with the aid of the hardener and microwave radiation, d) drying said foam using microwave radiation, and e) tempering the dried foam using hot air. According to the invention, it is essential for the mixture M1) to contain, as a surfactant mixture, a mixture consisting of 50 to 90 wt.% of an anionic surfactant and 10 to 50 wt.% of a non-ionic surfactant, these weight percentages each relating to the total weight of the surfactant mixture. The invention also relates to melamine/formaldehyde foams that can be produced according to the method in the invention, as well as to the uses of same.

    Abstract translation: 制备三聚氰胺 - 甲醛泡沫体包括（a）制备含有至少一种三聚氰胺 - 甲醛预缩合物，至少一种硬化剂，表面活性剂混合物的含水混合物，其包含阴离子表面活性剂和非离子表面活性剂的混合物，至少一种盐 无机酸和/或有机羧酸，至少一种发泡剂，至少一种染料和/或荧光增白剂，至少一种其它添加剂和水，（b）加热和发泡所得混合物，（c）交联 并固化所形成的泡沫，（d）干燥泡沫，和（e）对干燥的泡沫进行退火。 制备三聚氰胺 - 甲醛泡沫，包括（a）制备含有（i）100个点的含水混合物。 重量。 至少一种三聚氰胺 - 甲醛预缩合物，（ii）2-4份。 重量。 至少一种硬化剂，（iii）0.2-5份。 重量。 表面活性剂混合物，其包含50-90重量％的阴离子表面活性剂和10-50重量％的非离子表面活性剂的混合物，（iv）0.1-5重量份。 重量。 至少一种无机酸和/或有机羧酸的盐，（v）1-40个。 重量。 至少一种发泡剂，（vi）0-5点。 重量。 至少一种染料和/或荧光增白剂，（vii）0-20份。 重量。 至少一种另外的添加剂，和（viii）25-60份。 重量。 水，（b）使用微波辐射加热和发泡得到的混合物，（c）使用硬化剂和微波辐射交联和固化形成的泡沫，（d）使用微波辐射干燥泡沫，和（e）使用 热气。 对于通过上述方法可获得的三聚氰胺 - 甲醛泡沫体，还包括独立权利要求。

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