中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

158 records (took 0.023 seconds)

    Hydrophilic rigid polyurethane foams, process for their production, and their use
    91.
    发明专利
    Hydrophilic rigid polyurethane foams, process for their production, and their use 未知

    公开(公告)号：DE3627236A1

    公开(公告)日：1988-02-18

    申请号：DE3627236

    申请日：1986-08-12

    Applicant: BASF AG

    Inventor： SCHERZER DIETRICH DR ,  MARX MATTHIAS DR

    IPC: A01G5/06 ,  A01G31/00 ,  C08G18/48 ,  C08G18/66 ,  C08G18/76 ,  C08G18/14 ,  A01G5/04

    Abstract: Hydrophilic rigid polyurethane foams having a density of from 15 to 50 kg/m are produced by reaction of A) 4,4', 2,4'- and/or 2,2'-diphenylmethane diisocyanate, polyphenylpolymethylene polyisocyanates or a mixture of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates with B) a mixture of relatively high- and low-molecular-weight polyhydroxyl compounds containing a) from 5 to 20 parts by weight of polyoxyethylene glycol having a hydroxyl number of from 100 to 500, b) from 10 to 40 parts by weight of at least one tetrafunctional oxypropylated aliphatic diamine having a hydroxyl number of from 500 to 800, c) from 10 to 30 parts by weight of diethylene glycol, d) from 0 to 10 parts by weight of at least one graft and/or filler polyether-polyol dispersion, e) from 0 to 40 parts by weight of at least one difunctional to octafunctional polyoxyalkylene ether polyol having an OH number of from 300 to 500 and f) from 0 to 30 parts by weight of trimethylolpropane, and C) water, in the presence of D) catalysts and optionally E) physical blowing agents, F) assistants and/or additives, where components A, B and C are reacted in such amounts that the NCO index is from 30 to 90. The products are used as substrates for plant cultivation, as support materials for biomasses, catalysts or ion exchangers, as support foams for cut flowers or as cleaning agents.

    PROCESS FOR THE PREPARATION OF OPTIONALLY CELLULAR POLYURETHANE-POLYUREA MOULDED OBJECTS
    92.
    发明专利
    PROCESS FOR THE PREPARATION OF OPTIONALLY CELLULAR POLYURETHANE-POLYUREA MOULDED OBJECTS 未知

    公开(公告)号：DE3560723D1

    公开(公告)日：1987-11-05

    申请号：DE3560723

    申请日：1985-02-06

    Applicant: BASF AG

    Inventor： WERNER FRANK DR ,  MARX MATTHIAS DR ,  HORN PETER DR ,  SCHMIDT HANS ULRICH

    IPC: C08G18/32 ,  C08G18/40 ,  C08G18/65

    Abstract: The invention relates to a one-shot process for the preparation of cellular or noncellular polyurethane polyurea parts having a modulus of flexural elasticity greater than 600 N/mm2 and densities of from 0.8 to 1.2 g/cm3 using the reaction injection molding technique, by reacting organic polyisocyanates, a polyol component, aromatic diamines, additional chain extenders and/or cross-linking agents in the presence of catalysts and optionally blowing agents, auxiliaries and/or additives, wherein the polyol component is a mixture containing (i) from 95 to 60 percent by weight of at least one compound selected from the group consisting of polyols, polyether polyamines, polyesteramides, and their mixtures having functionalities of from 2 to 6 and a molecular weight of from 1000 to 8000 and (ii) from 5 to 40 percent by weight of a least one aromatic and/or aromatic-aliphatic polyester polyol having a functionality of from 2 to 3 and a molecular weight of from 254 to 700, wherein the percents by weight are based on the total weight of the polyol component.

    PROCESS FOR THE PRODUCTION OF POSSIBLY CELLULAR MOULDED ARTICLES FROM POLYUREA ELASTOMERS
    95.
    发明专利
    PROCESS FOR THE PRODUCTION OF POSSIBLY CELLULAR MOULDED ARTICLES FROM POLYUREA ELASTOMERS 未知

    公开(公告)号：DE3367601D1

    公开(公告)日：1987-01-02

    申请号：DE3367601

    申请日：1983-04-21

    Applicant: BASF AG

    Inventor： NISSEN DIETMAR DR ,  SCHOENLEBEN WILLIBALD DR ,  MARX MATTHIAS DR ,  ILLERS KARL HEINZ DR ,  SIMAK PETR DR

    IPC: B29C67/24 ,  C08G18/32 ,  C08G18/50 ,  C08G18/65 ,  C08G18/66 ,  C08G18/14

    Abstract: 1. A process for the preparation of molded parts based on polyurea elastomers by reacting a) organic polyisocyanates, b) polyether polyamines, and c) alkyl-substituted aromatic diamines, wherein the polyether polyamines (b) used are polyoxyalkylene polyamines having a molecular weight of from 1 100 to 16 000 and the general structural formulae H2 N-(R**2 O)x -R**1 -NH2 H2 N-R**1 -(OR**2 )x -NH-(R**2 O)y -R**1 -NH2 see diagramm : EP0093334,P12,F1 and/or see diagramm : EP0093334,P12,F2 where R**1 and R**2 are identical or different optionally substituted alkylene radicals of 2 to 10 carbon atoms, the alkylene radicals R**2 of the alkoxy groups also being identical or different, T is a radical or a trifunctional initiator molecule for the alkylene oxide polymerization, which radical does not contain any reactive hydrogen atoms, and x, x', z, z', y and y' are identical or different integers greater than 0, and the alkyl-substituted aromatic diamines (c) used are meta-phenylene diamines of the formulae see diagramm : EP0093334,P12,F3 and/or see diagramm : EP0093334,P12,F4 where R**3 is a branched alkyl of up to 10 carbon atoms, in which the branching point is at the C1 -carbon atom, and R**4 and R**5 are identical or different alkyls of 1 to 3 carbon atoms, and/or diaminodiphenyl-methanes of the formula see diagramm : EP0093334,P13,F1 where R**6 , R**7 , R**8 and R**9 are identical or different and each denote methyl, ethyl, propyl, isopropyl, sec-butyl and tert-butyl, but at least one of the radicals is isopropyl or sec-butyl.

    99.
    发明专利
    未知

    公开(公告)号：DE3439461A1

    公开(公告)日：1986-05-07

    申请号：DE3439461

    申请日：1984-10-27

    Applicant: BASF AG

    Inventor： HORN PETER DR ,  BAUMANN EDWIN ,  MARX MATTHIAS DR ,  GERARTS PETER

    IPC: B32B5/28 ,  B32B5/24 ,  B32B37/10 ,  B32B38/00 ,  C08G69/16 ,  C08J5/24 ,  C08J9/40 ,  B32B27/04 ,  B32B27/12

    Abstract: Sheet-like reinforced materials consisting of A. a core layer comprising a sheet-like textile structure, preferably a glass fiber mat, B. a plastic matrix composed of a nylon which has been polymerized under alkaline conditions and penetrates both the core layer and the surface layer of layers, are produced batchwise by the RIM method or continuously on a double-belt press by impregnating the sheet-line textile structure and the foam sheets with a lactam melt and polymerizing the latter. The reinforced material can be used for the production of finished articles having a satisfactory surface, for example for the automotive or aircraft industry.

Patent Agency Ranking