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    1.
    发明专利
    未知

    公开(公告)号：DE59711565D1

    公开(公告)日：2004-06-03

    申请号：DE59711565

    申请日：1997-09-23

    Applicant: BASF AG

    Inventor： ROTERMUND DR ,  HEMPEL RENATE ,  SEIFERT DR ,  WIEGMANN WERNER

    IPC: C08J9/12 ,  C08G18/06 ,  C08G18/48 ,  C08G18/50

    Abstract: A process for the production of rigid polyurethane foam with improved thermodimensional stability and reduced thermal conductivity comprises reacting (a) polyisocyanates with (b) compounds with isocyanate-reactive hydrogen atoms in presence of (c) water and optionally (d) physical blowing agents and (e) catalysts and other additives etc. 60-100 wt% of component (b) consists of a polyol mixture containing (b1) a polyol obtained by addition of ethylene oxide (EO) and/or propylene oxide (PO) to a hexitol or hexitol mixture and (b2) a polyol obtained by addition of EO and/or PO to one or more aromatic amines, such that the total hexitol content and the total amine content of the polyol mixture is 15-30 wt% and 1-10 wt% respectively.

    2.
    发明专利
    未知

    公开(公告)号：DE59812630D1

    公开(公告)日：2005-04-14

    申请号：DE59812630

    申请日：1998-09-22

    Applicant: BASF AG

    Inventor： ROTERMUND DR ,  BIEDERMANN ANJA ,  HEMPEL RENATE ,  WIEGMANN WERNER ,  HEINZ MARION

    IPC: C08J3/02 ,  C08G18/40 ,  C08G18/42 ,  C08G18/48 ,  C08G18/50 ,  C08G18/66 ,  C08G101/00 ,  C08J9/12 ,  C08J9/14 ,  C08L75/04

    Abstract: Emulsions containing polyether alcohols are used in the production of hard foams based on isocyanates to improve the temperature stability of the foams. Storage-stable halogen-free emulsions used in the production of hard foams based on isocyanates contain: (a) compounds containing hydrogen atoms reactive towards isocyanate groups; (b) water; (c) halogen-free propellants; and optionally (d) usual auxiliary aids and/or additives. (a) is used in an amount of 0.2-80 wt.% and has a functionality of more than 1.5, and an OH number of 10-100 mg KOH/g. (c) consists of 3-10 C hydrocarbons. Independent claims are also included for: (1) the production of the hard foams described; (2) the foams, and (3) the use of the polyether alcohols described.

    3.
    发明专利
    未知

    公开(公告)号：DE59811932D1

    公开(公告)日：2004-10-21

    申请号：DE59811932

    申请日：1998-03-02

    Applicant: BASF AG

    Inventor： KNORR DR ,  ROTERMUND DR ,  BAUM EVA ,  SEIFERT DR ,  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.

    4.
    发明专利
    未知

    公开(公告)号：DE59811942D1

    公开(公告)日：2004-10-21

    申请号：DE59811942

    申请日：1998-09-23

    Applicant: BASF AG

    Inventor： ROTERMUND DR ,  HEMPEL RENATE ,  SEIFERT DR ,  SCHMIADE WERNER

    IPC: C08G18/40 ,  C08G18/42 ,  C08G18/48 ,  C08G18/66 ,  C08G18/67 ,  C08G101/00 ,  C08J9/14

    Abstract: Emulsions containing polyether alcohols and polyester alcohols are used in the production of hard foams based on isocyanates to improve the temperature stability of the foams. Temperature-stable hard foams based on isocyanates are produced by reacting (a) polyisocyanates with (b) compounds with at least two hydrogen atoms reactive with isocyanate groups and (c) water in the presence of (d) propellants and optionally catalysts and auxiliary aids and additives. (b) comprises (bi) a polyether alcohol present in an amount of 0.2-80 wt.% and having a functionality of at least 1.5 and an OH number of 10-100 mg KOH/g, and (bii) a polyester alcohol present in an amount of 5-90 wt.%. (c) is present in an amount of maximum 2 wt.%. (d) contains hydrocarbons and/or hydrocarbons containing fluorine in an amount of 5-30 wt.%.

    6.
    发明专利
    未知

    公开(公告)号：DE59812321D1

    公开(公告)日：2005-01-05

    申请号：DE59812321

    申请日：1998-09-22

    Applicant: BASF AG

    Inventor： ROTERMUND DR ,  HEINZ MARION ,  BIEDERMANN ANJA ,  HEMPEL RENATE E ,  WIEGMANN WERNER

    IPC: C08J9/00 ,  C08G18/00 ,  C08G18/28 ,  C08G18/34 ,  C08G18/36 ,  C08G18/40 ,  C08G18/42 ,  C08G18/65 ,  C08G18/66 ,  C08G101/00 ,  C08J9/08 ,  C08J9/14 ,  C09K23/34

    Abstract: Storage-stable emulsion, used in the manufacture of fine celled hard foamed materials, contains a polyester alcohol propellant of specified formula as emulsifier. Emulsion contains: (a) compounds containing hydrogen atoms reactive towards isocyanates; (b) a polyester alcohol propellant of formula (I) as emulsifier; and (c) usual polyurethane catalysts, auxiliary aids and/or additives. (b) is emulsified in components (b) and (c). m = 0-15; n = 0-1; o = 0-15; p = 0-1; q = 0-15; r = 0-1; s = 0-15; t = 0-1; u = 0-10; v = 0-15; x = 1-5; y = 1-4 or mixtures between 1-3 with r + n is not 0; R1 = aliphatic structure based on the structure of multivalent alcohols, preferably ethylene glycol, diethylene glycol, triethylene glycol 1,2-propylene glycol, and dipropylene glycol; 1,4-butane diol, 1,6-hexane diol, neopentyl glycol, 1,3-butane diol, trimethylol propane, trimethylol ethane, glycerin, pentaerythrite; R2 = polycarboxylic acid without COOH groups, e.g. adipic acid, terephthalic acid, or o-phthalic acid; and R3 = alcohol as in R1.

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