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    Process for bonding water penetrable cellulosic particles
    4.
    发明公开
    Process for bonding water penetrable cellulosic particles 失效
    Verfahren zur Verleimung von wasserdurchdringbaren Zelluloseteilchen。

    公开(公告)号：EP0252867A1

    公开(公告)日：1988-01-13

    申请号：EP87600007.6

    申请日：1987-05-29

    申请人： ENIGMA N.V.

    发明人： Markessini, Vergopoulou Efthalia

    IPC分类号： C08G16/02 ,  C08L97/02 ,  C08G12/02 ,  C08G12/40 ,  C08G8/28 ,  C09J161/32

    CPC分类号： C08L61/04 ,  C08G12/02 ,  C08G14/02 ,  C08L61/20 ,  C08L97/005 ,  C08L97/02 ,  Y10T428/31989 ,  C08L2666/26

    摘要： A substitute for amino and phenolic resins is disclosed. It is used in the polycondensation of such resins based on formaldehyde for bonding water penetrable cellulosic particles. The substitute comprises an aqueous solution of

    a) either at least one aldehyde together with at least one amide and/or together with at least one phenol, or a non-resinous condensation product of formaldehyde and urea, and
    b) a sugar or a sugar derivative or their by-products or a starch or its degradation products or a mixture thereof, and/ or
    c) a raw and/or treated lignosulfonate.

    This substitute also reduces the free formaldehyde of the resulting board without impairing the other properties thereof.

    摘要翻译： 公开了氨基和酚醛树脂的替代物。 用于这种基于甲醛的树脂的缩聚以粘合水可渗透的纤维素颗粒。 替代物包括a）至少一种醛与至少一种酰胺和/或与至少一种苯酚或甲醛和尿素的非树脂缩合产物一起的水溶液，和b）糖或糖 衍生物或其副产物或淀粉或其降解产物或其混合物，和/或c）生和/或处理的木素磺酸盐。 该替代物还可以降低所得板的游离甲醛而不损害其它性能。

    METHOD FOR THE MANUFACTURE OF MINERAL WOOL PRODUCTS
    8.
    发明公开
    METHOD FOR THE MANUFACTURE OF MINERAL WOOL PRODUCTS 审中-公开

    公开(公告)号：EP3561166A1

    公开(公告)日：2019-10-30

    申请号：EP18169926.5

    申请日：2018-04-27

    申请人： URSA Insulation, S.A.

    发明人： Molinero Arenas, Alejandro ,  Aznar Écija, Ana Isabel ,  Querol Piñot, Mireia ,  Casado Domínguez, Arturo Luís

    IPC分类号： D04H1/4209 ,  C03C25/34 ,  C09J161/30 ,  C09J161/32 ,  D04H1/587 ,  D04H1/64 ,  E04B1/76

    摘要： The invention relates to a method for the manufacture of mineral wool, comprising reacting an aqueous phenol-formaldehyde resole with free formaldehyde with a first amount of urea, thereby preparing a prereact; contacting the prereact with a second amount of urea; applying the resulting mixture of prereact and second amount of urea, as part of a binder, optionally with additives, to the surface of mineral fibers; and curing the binder on the surface of the mineral fibers. The total amount of urea used ranges 10-60 wt.% relative to the sum of the dry weight of the phenol-formaldehyde resole and the total amount of urea, provided that when Ut is between 10-40 wt. %, the second amount of urea (U2) used in c) is between 10-39 wt.% of the total amount of urea (Ut), and when Ut is between 41-60 wt.%, the second amount of urea (U2) used in c) is at least 10 wt.% of the total amount of urea (Ut). The invention also relates to a mineral wool product with reduced emissions of formaldehyde obtained by the method of the invention.