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公开(公告)号：AT399805T
公开(公告)日：2008-07-15
申请号：AT06708423
申请日：2006-02-21
Applicant: BASF SE
Inventor： HANSEN RALF , JACKISCH PETER , MARTEN ELKE
Abstract: Preparation of cylindrical molded bodies (I) based on cellular polyurethane elastomers with determined density, tensile strength, elongation and a tear resistance, comprises reaction of prepolymers (i) with cross linking components (ii) in a molded form, where (i) are isocyanate groups based on methylenediphenyldiisocyanate and polyetherdiol; and (ii) contains polyetheralcohol with a nominal functionality of 2-3; diol with a molecular weight of 62-499 g/mol; water; and catalysts. Preparation of cylindrical molded bodies (I) based on cellular polyurethane elastomers with a density of 350-900 kg/m 3> according to DIN EN ISO 1798, a tensile strength of >= 2 N/mm 2> according to DIN EN ISO 1798, elongation of >= 200% according to DIN EN ISO 1798 and a tear resistance of >= 8 N/mm according to DIN ISO 34-1 B, comprises reaction of prepolymers (i) with cross linking components (ii) in a molded form, where (i) are isocyanate groups based on methylenediphenyldiisocyanate and polyetherdiol with a molecular weight of 1500-3000 g/mol based on propylene oxide and/or ethyleneoxide; and (ii) contains polyetheralcohol with a nominal functionality of 2-3 in relation to isocyanates and a molecular weight of 1500-6000 g/mol based on propylene oxide and/or ethyleneoxide; diol with a molecular weight of 62-499 g/mol; water; and catalysts, where (i) and (ii) are filled in a molded form by means of a high pressure machine, which exhibits a mixing head, into which (i) and (ii) are mixed and obtained product amounts to 15-60 g/s.
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公开(公告)号：ES2307283T3
公开(公告)日：2008-11-16
申请号：ES06708423
申请日：2006-02-21
Applicant: BASF SE
Inventor： HANSEN RALF , JACKISCH PETER , MARTEN ELKE
Abstract: Procedimiento para producir cuerpos de moldeo cilíndricos, sobre la base de elastómeros de poliuretano celulares que, con una densidad según la DIN EN ISO 1798 de entre 350 y 800 kg/m 3 , una resistencia a la tracción según la DIN EN ISO 1798 de >_ 2,0 N/mm 2 , un alargamiento a la rotura según la DIN EN ISO 1798 de >_ 200%, y una resistencia a las grandes grietas según la DIN ISO 34-1 B de >_ 8 N/mm, mediante transformación de un prepolímero (i) que presenta grupos de isocianato con un componente de reticulación (ii) en un molde, caracterizado porque el prepolímero (i) que presenta grupos de isocianato se basa en diisocianato difenil metileno (MDI) y (b1) poliéterdiol con un peso molecular de entre 1.500 g/mol y 3.000 g/mol sobre la base de óxido de propileno y/o óxido de etileno, y el componente de reticulación (ii) contiene (b2) poliéteralcohol con una funcionalidad nominal frente a isocianatos de 2 a 3 y un peso molecular de entre 1.500 g/mol y 6.000 g/mol sobre la base de óxido de propileno y/o óxido de etileno, así como (c2) diol con un peso molecular de entre 62 g/mol y 499 g/mol, (d) agua y (e) catalizadores, y se vierten en el molde el prepolímero (i) y el componente de reticulación (ii) mediante una máquina de alta presión que presenta una cabeza mezcladora, en la que se mezclan los componentes (i) e (ii), en donde la expulsión de cabeza mezcladora es de entre 15 y 60 g/s.
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公开(公告)号：DE502006001028D1
公开(公告)日：2008-08-14
申请号：DE502006001028
申请日：2006-02-21
Applicant: BASF SE
Inventor： HANSEN RALF , JACKISCH PETER , MARTEN ELKE
Abstract: Preparation of cylindrical molded bodies (I) based on cellular polyurethane elastomers with determined density, tensile strength, elongation and a tear resistance, comprises reaction of prepolymers (i) with cross linking components (ii) in a molded form, where (i) are isocyanate groups based on methylenediphenyldiisocyanate and polyetherdiol; and (ii) contains polyetheralcohol with a nominal functionality of 2-3; diol with a molecular weight of 62-499 g/mol; water; and catalysts. Preparation of cylindrical molded bodies (I) based on cellular polyurethane elastomers with a density of 350-900 kg/m 3> according to DIN EN ISO 1798, a tensile strength of >= 2 N/mm 2> according to DIN EN ISO 1798, elongation of >= 200% according to DIN EN ISO 1798 and a tear resistance of >= 8 N/mm according to DIN ISO 34-1 B, comprises reaction of prepolymers (i) with cross linking components (ii) in a molded form, where (i) are isocyanate groups based on methylenediphenyldiisocyanate and polyetherdiol with a molecular weight of 1500-3000 g/mol based on propylene oxide and/or ethyleneoxide; and (ii) contains polyetheralcohol with a nominal functionality of 2-3 in relation to isocyanates and a molecular weight of 1500-6000 g/mol based on propylene oxide and/or ethyleneoxide; diol with a molecular weight of 62-499 g/mol; water; and catalysts, where (i) and (ii) are filled in a molded form by means of a high pressure machine, which exhibits a mixing head, into which (i) and (ii) are mixed and obtained product amounts to 15-60 g/s.
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