Método para producir elementos compuestos con base en material espumado a base de isocianato

    公开(公告)号:ES2553580T3

    公开(公告)日:2015-12-10

    申请号:ES08709143

    申请日:2008-02-21

    Applicant: BASF SE

    Abstract: Método para producir elementos compuestos, que se componen al menos de una capa de cobertura a) y una espuma rígida a base de isocianato b), en la cual la capa de cobertura a) se mueve continuamente y el material de inicio para la espuma rígida a base de isocianato b) se aplica sobre la capa de cobertura, en cuyo caso la descarga del material de inicio líquido para la espuma rígida a base de isocianato b) se efectúa por medio de un tubo provisto de orificios, parado fijo, dispuesto en paralelo y en ángulo recto a la dirección de movimiento de la capa de cobertura a), caracterizado porque el material de inicio para la espuma rígida a base de isocianato b) se abastece en el centro del tubo provisto de orificios y porque el diámetro del tubo provisto de orificios se disminuye desde el centro hacia los bordes del tubo.

    PROCESS FOR PRODUCING COMPOSITE PROFILES

    公开(公告)号:CA2880780A1

    公开(公告)日:2014-04-03

    申请号:CA2880780

    申请日:2013-09-16

    Applicant: BASF SE

    Abstract: The invention relates to a method for producing composite profiled elements comprising at least two metal shells which are connected by connecting pieces made of a thermoplastic material and comprising a core made of rigid polyurethane foam. The method has the steps of introducing the starting components of the rigid polyurethane foam into a cavity formed by the metal shells, wherein the rigid polyurethane foam is formed, and subsequently coating the outer surface of the composite profile using a powder coating or a baking enamel, said rigid polyurethane foam being obtained by reacting the following components: A) at least one polyisocyanate, B) at least one multifunctional compound which is reactive towards isocyanates, C) one or more propellants at least comprising formic acid, D) optionally one or more flame retardants, E) optionally one or more catalysts, and F) optionally other auxiliary agents or additives. The starting components of the rigid polyurethane foam do not contain inorganic fillers.

    PROCESS FOR PRODUCING COMPOSITE PROFILES

    公开(公告)号:CA2880780C

    公开(公告)日:2021-06-22

    申请号:CA2880780

    申请日:2013-09-16

    Applicant: BASF SE

    Abstract: The invention relates to a method for producing composite profiled elements comprising at least two metal shells which are connected by connecting pieces made of a thermoplastic material and comprising a core made of rigid polyurethane foam. The method has the steps of introducing the starting components of the rigid polyurethane foam into a cavity formed by the metal shells, wherein the rigid polyurethane foam is formed, and subsequently coating the outer surface of the composite profile using a powder coating or a baking enamel, said rigid polyurethane foam being obtained by reacting the following components: A) at least one polyisocyanate, B) at least one multifunctional compound which is reactive towards isocyanates, C) one or more propellants at least comprising formic acid, D) optionally one or more flame retardants, E) optionally one or more catalysts, and F) optionally other auxiliary agents or additives. The starting components of the rigid polyurethane foam do not contain inorganic fillers.

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