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    Method for producing wood-base materials
    28.
    发明专利
    Method for producing wood-base materials 未知

    公开(公告)号：AU2006219949B2

    公开(公告)日：2011-06-02

    申请号：AU2006219949

    申请日：2006-03-03

    Applicant: BASF SE

    Inventor： WEINGART FRANZ ,  MILITZ HOLGER ,  KINGMA AREND JOUKE ,  WEPNER FALKO ,  KRAUSE ANDREAS

    IPC: B27K3/15 ,  B27D1/00

    Abstract: The present invention relates to a process for the production of wood-base materials which have at least one thin veneer layer adhesively bonded over the surface to a substrate or to further veneer layers, which process comprises the following steps: i. impregnation of a veneer with an aqueous curable composition which comprises a) at least one curable urea compound selected from urea compounds H which have at least one N-bonded group of the formula CH2OR, where R is hydrogen or C1-C4-alkyl, and/or a 1,2-bishydroxyethane-1,2-diyl group bridging the two nitrogen atoms of the urea, precondensates of the urea compound H, and reaction products or mixtures of the urea compound H with at least one alcohol which is selected from C1-C6-alkanols, C2-C6-polyols and oligoethylene glycols, and b) at least one catalyst K effecting crosslinking of the urea compound; ii) gluing of the impregnated veneer and/or the substrate with a glue composition and iii) processing of the glued veneer to give a wood-base material at elevated temperature with curing of the crosslinkable urea compound, the impregnated veneer comprising the crosslinkable urea compound in substantially uncrosslinked form before the gluing in step ii).

    29.
    发明专利
    未知

    公开(公告)号：AT483563T

    公开(公告)日：2010-10-15

    申请号：AT06707410

    申请日：2006-03-03

    Applicant: BASF SE

    Inventor： KINGMA AREND ,  WEINGART FRANZ ,  MILITZ HOLGER ,  WEPNER FALKO ,  KRAUSE ANDREAS

    IPC: B27K3/15 ,  B27D1/00

    Abstract: The present invention relates to a process for the production of wood-base materials which have at least one thin veneer layer adhesively bonded over the surface to a substrate or to further veneer layers, which process comprises the following steps: i. impregnation of a veneer with an aqueous curable composition which comprises a) at least one curable urea compound selected from urea compounds H which have at least one N-bonded group of the formula CH2OR, where R is hydrogen or C1-C4-alkyl, and/or a 1,2-bishydroxyethane-1,2-diyl group bridging the two nitrogen atoms of the urea, precondensates of the urea compound H, and reaction products or mixtures of the urea compound H with at least one alcohol which is selected from C1-C6-alkanols, C2-C6-polyols and oligoethylene glycols, and b) at least one catalyst K effecting crosslinking of the urea compound; ii) gluing of the impregnated veneer and/or the substrate with a glue composition and iii) processing of the glued veneer to give a wood-base material at elevated temperature with curing of the crosslinkable urea compound, the impregnated veneer comprising the crosslinkable urea compound in substantially uncrosslinked form before the gluing in step ii).

    MATERIAL LIGNOCELULOSICO POBRE EN FORMALDEHIDO Y METODO PARA SU PRODUCCION.
    30.
    发明专利
    MATERIAL LIGNOCELULOSICO POBRE EN FORMALDEHIDO Y METODO PARA SU PRODUCCION. 未知

    公开(公告)号：ES2344665T3

    公开(公告)日：2010-09-02

    申请号：ES06806919

    申请日：2006-10-02

    Applicant: BASF SE

    Inventor： KINGMA AREND JOUKE ,  WEINGART FRANZ ,  SCHAFFERT STEFAN ,  MILITZ HOLGER ,  KRAUSE ANDREAS ,  WEPNER FALKO

    IPC: B27K3/15 ,  C08L97/02

    Abstract: Material de lignocelulosa que contiene, distribuido en el material de lignocelulosa, un compuesto de nitrógeno capaz de entrelazarse, el cual es formalmente un producto de adición de formaldehído en forma entrelazada en una fracción de cantidad (N) de al menos 1% en peso, calculada como nitrógeno y referida al peso total del material de lignocelulosas, donde el cociente (FA/N) de emisión de formaldehído (FA), determinado mediante el método de botellas de conformidad con EN 717 parte 3, y la fracción de cantidad del compuesto de nitrógeno (N) tiene un valor de máximo 3,5 x 10-3 y el cual tiene un grado de fijación del compuesto de nitrógeno, determinado de conformidad con DIN EN 84, de más de 73%.

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