PROCEDIMIENTO PARA LA OBTENCION DE ESPUMA SEMIRRIGIDA DE POLIURETANO.

    公开(公告)号:ES2253598T3

    公开(公告)日:2006-06-01

    申请号:ES03008410

    申请日:2003-04-11

    Applicant: BASF AG

    Abstract: Procedimiento para la obtención de espumas semirrígidas de poliuretano mediante reacción de (a) isocianatos con (b) compuestos reactivos frente a los isocianatos en presencia de (d) agentes propulsores y, en caso dado, (c) catalizadores y/o (e) aditivos, caracterizado porque la conversión se lleva a cabo en presencia de al menos un poliéster con un índice de hidroxilo de 40 hasta 100 mg de KOH/g como (b) y los isocianatos (a) contienen MDI polímero y porque como (b) se emplean poliéteralcoholes con una funcionalidad media de 2 hasta 3 y con un índice de OH desde 20 hasta 50 mg de KOH/g y reticulantes con una funcionalidad, frente a los isocianatos, de 3 y con un índice de OH mayor que 900 mg de KOH/g.

    35.
    发明专利
    未知

    公开(公告)号:PT944661E

    公开(公告)日:2001-07-31

    申请号:PT97954345

    申请日:1997-12-12

    Applicant: BASF AG

    Abstract: In a process for producing self-releasing, compact or cellular moldings which comprise polyisocyanate polyaddition products and may contain reinforcing material by reactinga) organic and/or modified organic polyisocyanates withb) at least one compound containing at least two reactive hydrogen atoms and having a molecular weight of from 62 to 10,000 and, if desired,c) chain extenders and/or crosslinkers in the presence ofd) internal mold release agents and in the presence of or absence ofe) catalysts,f) blowing agents,g) reinforcing materials andh) auxiliariesin an open or closed mold, the internal mold release agents (d) used are diesters and/or monoesters of alkylsuccinic acids and/or diesters and/or monoesters of alkenylsuccinic acids.

    37.
    发明专利
    未知

    公开(公告)号:DE19928608A1

    公开(公告)日:2000-12-28

    申请号:DE19928608

    申请日:1999-06-22

    Applicant: BASF AG

    Abstract: A laminated element comprises a thermoplastic polymer bonded to the reaction product of a mixture of an isocyanate, a polyester polyalcohol (functionality of 2-3 and a hydroxyl number of 40-400 mgKOH/g), prepared from adipic acid and/or phthalic acid anhydride with polytetrahydrofuran, 1,6-hexanediol, 1,4-butanediol, monoethylene glycol, diethyleneglycol, trimethylolpropane and/or neopentylglycol. A laminated element (I) comprises: (A) a thermoplastic polymer, to which is bonded; (B) the reaction product a mixture comprising (B1) isocyanate (B2) a polyester polyalcohol, having a functionality of 2-3 and a hydroxyl number of 40-400 mgKOH/g, prepared from the condensation of adipic acid and/or phthalic acid anhydride with polytetrahydrofuran, 1,6-hexanediol, 1,4-butanediol, monoethylene glycol, diethyleneglycol, trimethylolpropane and/or neopentylglycol and optionally (B3) catalyst; (C) propellant; and/or (D) additives and processing aids. Independent claims are included for: (i) a process for the production of (I) by the application of (B) onto (A); and (ii) aircraft components, automobile components or furniture containing (I).

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