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    PROCESO PARA MEJORAR LA DURABILIDAD, ESTABILIDAD DIMENSIONAL Y DUREZA SUPERFICIAL DE UN CUERPO DE MADERA.
    1.
    发明专利
    PROCESO PARA MEJORAR LA DURABILIDAD, ESTABILIDAD DIMENSIONAL Y DUREZA SUPERFICIAL DE UN CUERPO DE MADERA. 未知

    公开(公告)号：MXPA05003420A

    公开(公告)日：2005-11-23

    申请号：MXPA05003420

    申请日：2003-10-01

    Applicant: BASF AG

    Inventor： HOLGER MILITZ

    IPC: B27K3/08 ,  B27K3/15 ,  B27K5/06 ,  B27K3/34 ,  B27K3/42 ,  B27K3/52

    Abstract: Se describe un proceso para mejorar la durabilidad, estabilidad dimensional y dureza superficial de un cuerpo de madera, en el cual un cuerpo de madera no tratado se impregna con una solucion acuosa de A) un agente de impregnacion del grupo que consiste de 1,3-bis(hidroximetil)-4, 5-dihidroxiimidazolidin-2ona, 1,3-bis(hidroximetil)-4, 5-dihidroxiimidazolidin-2-ona modificadas con un alcohol C1-5, un poliol o mezclas de los mismos, 1, 3-dimetil-4, 5-dihidroxiimidazolidin-2-ona, dimetilolurea, bis(metoximetil)urea, tetrametilolacetilendiurea, 1, 3-bis (hidroximetil)imidazolidin-2-ona, metilolmetilurea o mezclas de los mismos. Y B) un catalizador del grupo que consiste de sales de metal o amonio, acidos organicos o inorganicos y mezclas de los mismos, y se provoca que la madera y el agente de impregnacion reaccionen mientras que se mantienen en condiciones humedas a temperatura eleva.

    Method for producing wood-base materials
    3.
    发明专利
    Method for producing wood-base materials 未知

    公开(公告)号：ZA200708404B

    公开(公告)日：2009-11-25

    申请号：ZA200708404

    申请日：2007-10-02

    Applicant: BASF AG

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

    IPC: B27D20100101 ,  B27K20100101

    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).

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