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    Preparing polyurethane foam, useful as a cleaning sponge for e.g. cleaning tubes, comprises mixing and reacting polyisocyanate, blowing agent (water) and optionally chain extenders, catalyst, and other auxiliaries and/or additives
    14.
    发明专利
    Preparing polyurethane foam, useful as a cleaning sponge for e.g. cleaning tubes, comprises mixing and reacting polyisocyanate, blowing agent (water) and optionally chain extenders, catalyst, and other auxiliaries and/or additives 未知

    公开(公告)号：DE102009028631A1

    公开(公告)日：2010-02-25

    申请号：DE102009028631

    申请日：2009-08-19

    Applicant: BASF SE

    Inventor： MOHMEYER NILS ,  FRITZ RALF ,  HABICHT ANNIKA ,  TEPE DANIELA ,  PRISSOK FRANK ,  HARMS MICHAEL

    IPC: C08L75/08 ,  C08J9/08

    Abstract: Preparation of a polyurethane foam (I) with a density of 70-300 g/dm 3>and 1-20 cells/cm, comprises mixing and reacting polyisocyanate obtained by reacting diisocyanates e.g. methanediisocyanate, with non-polar polyetherols obtained by alkoxylation of 2 to 4-hydric alcohols with propylene oxide and/or butylene oxide, and/or polytetrahydrofuran, and polar polyetherols obtained by alkoxylation of 2- to 4-hydric alcohols with ethylene oxide and propylene oxide, a blowing agent comprising water, and optionally chain extenders, a catalyst, and other auxiliaries and/or additives to form (I). Preparation of a polyurethane foam (I) with a density of 70-300 g/dm 3>and 1-20 cells/cm, comprises mixing and reacting polyisocyanate obtained by reacting diisocyanates comprising methanediisocyanate and/or naphthalene diisocyanate, with non-polar polyetherols obtained by alkoxylation of 2 to 4-hydric alcohols with propylene oxide and/or butylene oxide and/or polytetrahydrofuran, and polar polyetherols obtained by alkoxylation of 2- to 4-hydric alcohols with ethylene oxide and propylene oxide, where the proportion of oxyethylene units, based on all oxyalkylene units, is at least 15 wt.%, and the isocyanate content of the polyisocyanate is 3-14%, a blowing agent comprising water, and optionally chain extenders, a catalyst, and other auxiliaries and/or additives to form (I) An independent claim is included for the polyurethane foam made by the method.

    Espuma de combinación
    18.
    发明专利
    Espuma de combinación 未知

    公开(公告)号：ES2612859T3

    公开(公告)日：2017-05-19

    申请号：ES13750672

    申请日：2013-08-08

    Applicant: BASF SE

    Inventor： PRISSOK FRANK ,  HARMS MICHAEL ,  VALLO MARTIN

    IPC: C08G18/10 ,  C08G18/36 ,  C08G18/48 ,  C08G18/66 ,  C08J9/35

    Abstract: Espuma de combinación, que contiene una matriz de espuma de poliuretano y partículas espumadas de poliuretano termoplástico contenidas en la misma, en la que la matriz y las partículas en cada caso se componen de componentes de poliol y componentes de poliisocianato, caracterizada porque al menos el 50% en peso de los componentes de poliol de la matriz y las partículas que conforman la unidad estructural son idénticos y al menos el 50% en peso de los componentes de poliisocianato de la matriz y las partículas que conforman la unidad estructural son idénticos, en la que la matriz es completamente de célula abierta y las partículas espumadas contenidas en la matriz son al menos parcialmente de célula cerrada.

    Method for producing rigid polymeric foams
    20.
    发明专利
    Method for producing rigid polymeric foams 未知

    公开(公告)号：AU2013225089B2

    公开(公告)日：2016-01-28

    申请号：AU2013225089

    申请日：2013-02-27

    Applicant: BASF SE

    Inventor： PRISSOK FRANK ,  HARMS MICHAEL

    IPC: C08G18/34

    Abstract: Method for producing a rigid polymeric foam, comprising the conversion of components A to C in the presence of component D or an isocyanate group-containing pre-polymers of components A and B with component C in the presence of component D, the total quantity of which is 100% by weight, (A) 35 to 65% by weight of at least one polyisocyanate component A, (B) 5 to 50% by weight of at least one polyol component B, (C) 1 to 59% by weight of at least one polycarboxylic acid component C and (D) 0.01 to 3% by weight of at least one Lewis base component D, wherein conversion takes place with the release of carbon dioxide.

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