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    52.
    发明专利
    未知

    公开(公告)号：ES2137027T3

    公开(公告)日：1999-12-01

    申请号：ES96943967

    申请日：1996-12-16

    Applicant: BASF AG

    Inventor： KRECH RUDIGER ,  ROTERMUND UDO ,  BOLLMANN HEINZ ,  HEMPEL RENATE ,  SCHOLZ WOLFGANG ,  GENZ MANFRED

    IPC: C08G18/08 ,  C08G18/40 ,  C08G18/76 ,  C08G101/00 ,  C08J9/36

    Abstract: PCT No. PCT/EP96/05639 Sec. 371 Date Nov. 18, 1998 Sec. 102(e) Date Nov. 18, 1998 PCT Filed Dec. 16, 1996 PCT Pub. No. WO97/23534 PCT Pub. Date Jul. 3, 1997A microcellular PU elastomer having improved dynamic-mechanical properties and based on an isocyanate component consisting essentially of 4,4'-MDI and also further customary constituents has, after heating at from 100 to 120 DEG C. for from 8 to 24 hours, a melting range of from 130 DEG C. as the minimum lower limit to 230 DEG C. as a minimum upper limit, measured by differential scanning calorimetry (DSC) at a heating rate of 20 DEG C./min, and a urea content of from 14 to 18% by weight. A process is also provided for preparing such a microcellular PU elastomer having improved dynamic mechanical properties. The microcellular PU elastomers can be used for producing damping elements.

    53.
    发明专利
    未知

    公开(公告)号：NO992527L

    公开(公告)日：1999-11-29

    申请号：NO992527

    申请日：1999-05-26

    Applicant: BASF AG

    Inventor： BIEDERMANN ANJA ,  HEMPEL RENATE ,  ROTERMUND UDO ,  SCHILLING UDO ,  SCHLEGEL KARL

    IPC: B32B5/18 ,  C08G18/48 ,  E04C2/292 ,  E04C2/296 ,  F16L9/147 ,  F16L59/14 ,  B32B27/40 ,  B32B27/06 ,  C08J5/18

    Abstract: In a composite element comprising layers of (i) polyisocyanate poly-addition product (PU), (ii) optionally at least one plastic, (iii) a gas permeation barrier and (iv) at least one thermoplastic, layers (iii) and (iv) are bonded together by melting a layer (iiia) between them. Independent claims are also included for: (a) sandwich elements with the following layers: (iv) 1-25 mm thermoplastic, (iii) 0.1-200 micro m metal foil coated on the opposite side from (i) and (ii) with 20-500 micro m thermoplastic (iiia) which is melted to bond (iii) with (iv), (ii) optionally 5-1000 micro m plastic, (i) 0.5-80 cm PU and then layers (ii), (iii) and (iv) as above; (b) tubes with the following layers: (iv) as above and/or metal as inner tube, (i), (ii), (iii) as above and (iv) (above) as an outer tube; (c) tubes with the following layers: (iv) plastic as above and/or metal as inner tube, (iii), (ii), (i), (ii), (iii) as above and (iv) plastic (above) as an outer tube; (d) the production of composite elements by reacting isocyanates with NCO-reactive compounds in the presence of blowing agents and optionally catalysts and other additives etc. in a reaction space bounded by layers (ii) (optional), (iii) gas barrier material, (iiia) 20-500 micro m thermoplastic and (iv) 1-25 mm thermoplastic(s), so that layer (iiia) is melted by the heat of reaction and binds layers (iii) and (iv) together after cooling; and (e) composite elements obtained by (d).

    MICRO-CELLULAR POLYURETHANE ELASTOMER CONTAINING UREA GROUPS, PROCESS OF ITS PREPARATION AND USE
    54.
    发明专利
    MICRO-CELLULAR POLYURETHANE ELASTOMER CONTAINING UREA GROUPS, PROCESS OF ITS PREPARATION AND USE 未知

    公开(公告)号：CZ189298A3

    公开(公告)日：1999-09-15

    申请号：CZ189298

    申请日：1996-12-16

    Applicant: BASF AG

    Inventor： KRECH RUDIGER ,  ROTERMUND UDO ,  BOLLMANN HEINZ ,  HEMPEL RENATE ,  SCHOLZ WOLFGANG ,  GENZ MANFRED

    IPC: C08J9/36 ,  C08G18/08 ,  C08G18/76

    Abstract: PCT No. PCT/EP96/05640 Sec. 371 Date Oct. 7, 1998 Sec. 102(e) Date Oct. 7, 1998 PCT Filed Dec. 16, 1996 PCT Pub. No. WO97/23535 PCT Pub. Date Jul. 3, 1997A microcellular PU elastomer having improved dynamic mechanical properties and based on an isocyanate component consisting essentially of 4,4'-MDI and further customary constituents has a physicochemical structure which, in the gel permeation chromatograph (GPC) of a solution of the microcellular polyurethane elastomer prepared at 90 DEG C. in N,N-dimethylformamide containing 1 percent of di-n-butylamine measured against polymethyl methacrylate (PMMA) as standard, displays a signal occurring in addition to low molecular weight main signal and comprising one or more peaks at an (apparent) molar mass of greater than 250,000 g/mol which becomes smaller or disappears on addition of lithium chloride to this solution, and a urea content of from 14 to 18% by weight. A process is also provided for preparing such a microcellular PU elastomer having improved dynamic mechanical properties. The microcellular PU elastomers can be used for producing damping elements.

    55.
    发明专利
    未知

    公开(公告)号：BR9612233A

    公开(公告)日：1999-07-13

    申请号：BR9612233

    申请日：1996-12-16

    Applicant: BASF AG

    Inventor： KRECH RUEDIGER ,  ROTERMUND UDO ,  BOLLMANN HEINZ ,  HEMPEL RENATE ,  SCHOLZ WOLFGANG ,  GENZ MANFRED

    IPC: C08J9/36 ,  C08G18/08 ,  C08G18/40 ,  C08G18/76 ,  C08G101/00

    Abstract: PCT No. PCT/EP96/05639 Sec. 371 Date Nov. 18, 1998 Sec. 102(e) Date Nov. 18, 1998 PCT Filed Dec. 16, 1996 PCT Pub. No. WO97/23534 PCT Pub. Date Jul. 3, 1997A microcellular PU elastomer having improved dynamic-mechanical properties and based on an isocyanate component consisting essentially of 4,4'-MDI and also further customary constituents has, after heating at from 100 to 120 DEG C. for from 8 to 24 hours, a melting range of from 130 DEG C. as the minimum lower limit to 230 DEG C. as a minimum upper limit, measured by differential scanning calorimetry (DSC) at a heating rate of 20 DEG C./min, and a urea content of from 14 to 18% by weight. A process is also provided for preparing such a microcellular PU elastomer having improved dynamic mechanical properties. The microcellular PU elastomers can be used for producing damping elements.

    MICRO-CELLULAR POLYURETHANE ELASTOMER CONTAINING UREA GROUPS
    57.
    发明专利
    MICRO-CELLULAR POLYURETHANE ELASTOMER CONTAINING UREA GROUPS 未知

    公开(公告)号：CZ176998A3

    公开(公告)日：1998-10-14

    申请号：CZ176998

    申请日：1996-12-16

    Applicant: BASF AG

    Inventor： KRECH RUDIGER ,  ROTERMUND UDO ,  BOLLMANN HEINZ ,  HEMPEL RENATE ,  SCHOLZ WOLFGANG ,  GENZ MANFRED

    IPC: C08J9/36 ,  C08G18/08 ,  C08G18/40 ,  C08G18/76 ,  C08G101/00

    Abstract: PCT No. PCT/EP96/05639 Sec. 371 Date Nov. 18, 1998 Sec. 102(e) Date Nov. 18, 1998 PCT Filed Dec. 16, 1996 PCT Pub. No. WO97/23534 PCT Pub. Date Jul. 3, 1997A microcellular PU elastomer having improved dynamic-mechanical properties and based on an isocyanate component consisting essentially of 4,4'-MDI and also further customary constituents has, after heating at from 100 to 120 DEG C. for from 8 to 24 hours, a melting range of from 130 DEG C. as the minimum lower limit to 230 DEG C. as a minimum upper limit, measured by differential scanning calorimetry (DSC) at a heating rate of 20 DEG C./min, and a urea content of from 14 to 18% by weight. A process is also provided for preparing such a microcellular PU elastomer having improved dynamic mechanical properties. The microcellular PU elastomers can be used for producing damping elements.

    PROCESS FOR PRODUCING LOW DENSITY RIGID POLYURETHANE FOAMS
    58.
    发明专利
    PROCESS FOR PRODUCING LOW DENSITY RIGID POLYURETHANE FOAMS 未知

    公开(公告)号：HU9800529D0

    公开(公告)日：1998-05-28

    申请号：HU9800529

    申请日：1998-03-10

    Applicant: BASF AG

    Inventor： BAUM EVA ,  KNORR GOTTFRIED ,  ROTERMUND UDO ,  SEIFERT HOLGER ,  WIEGMANN WERNER

    IPC: C08J9/08 ,  C08G18/48 ,  C08G18/50 ,  C08G18/66 ,  C08J9/14

    Abstract: The production of rigid polyurethane (PUR) foam with a low bulk density (I) comprises reacting (a) polyisocyanates and/or modified polyisocyanates with (b) high-mol. wt. compound(s) with at least two reactive hydrogens and optionally (c) low-mol. wt. chain-extenders and/or crosslinkers in presence of (d) blowing agents, (e) catalysts and optionally (f) other additives etc. Component (d) consists of a mixture of (d-1) cyclopentane, (d-2) at least one 3-4C alkane and/or alkene which forms a homogeneous mixture with cyclopentane and (d-3) the carbon dioxide from the reaction of water and isocyanate. Component (b) comprises aromatic nitrogen-containing polyethers.

    MICROCELLULAR POLYURETHANE ELASTOMER CONTAINING UREA GROUPS
    59.
    发明专利
    MICROCELLULAR POLYURETHANE ELASTOMER CONTAINING UREA GROUPS 未知

    公开(公告)号：CA2239790A1

    公开(公告)日：1997-07-03

    申请号：CA2239790

    申请日：1996-12-16

    Applicant: BASF AG

    Inventor： KRECH RUEDIGER ,  BOLLMANN HEINZ ,  HEMPEL RENATE ,  GENZ MANFRED ,  SCHOLZ WOLFGANG ,  ROTERMUND UDO

    IPC: C08G18/08 ,  C08G18/76 ,  C08J9/04 ,  C08L75/00

    Abstract: The invention relates to a microcellular PU elastomer with improved dynamicmechanical characteristics, based on an isocyanate component consisting essentially of 4,4'-MDI and on other standard components. The proposed elastomer following tempering at temperatures of 100-120 ~C for 8-24 hours has a melting range of between 130 ~C as minimum lower limit and 230 ~C as minimum upper limit, as measured by differential scanning calorimetry (DSC) at a heating rate of 20 ~C/min and a urea content of 14-18 wt.%. Also disclosed are a process for producing such a microcellular PU elastomer with improved dynamic-mechanical characteristics and the use of said elastomers in the production of damping elements.

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