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    PRODUCTION OF FINELY POROUS RIGID FOAM BY USING ISOCYANATE AS BASE MATERIAL
    2.
    发明专利
    PRODUCTION OF FINELY POROUS RIGID FOAM BY USING ISOCYANATE AS BASE MATERIAL 失效

    公开(公告)号：JPH11158308A

    公开(公告)日：1999-06-15

    申请号：JP27349398

    申请日：1998-09-28

    Applicant: BASF AG

    Inventor： VOLKERT OTTO ,  ROTERMUND UDO ,  BIEDERMANN ANJA ,  HEINZ MARION

    IPC: C08J9/02 ,  B29C44/10

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a finely porous rigid foam by using an isocyanate as a base material, and further to provide an apparatus for carrying out the method. SOLUTION: This method for producing a finely porous rigid foam by reacting a polyisocyanate with a compound having at least two reactive hydrogen atoms in a hermetically sealed mold comprises (a) introducing a gas to the reactive components under pressure before inserting the reactive components into the mold, (b) pressurizing the mold before, during or after insertion of the reaction mixture, and (c) reducing the pressure in the mold after the insertion of the reaction mixture into the mold and before the hardening of the rigid foam.

    MANUFACTURE OF OPEN-CELL RIGID FOAM, OPEN-CELL RIGID FOAM OBTAINED THEREBY AND ITS USAGE
    4.
    发明专利
    MANUFACTURE OF OPEN-CELL RIGID FOAM, OPEN-CELL RIGID FOAM OBTAINED THEREBY AND ITS USAGE 失效

    公开(公告)号：JPH11158244A

    公开(公告)日：1999-06-15

    申请号：JP27013998

    申请日：1998-09-24

    Applicant: BASF AG

    Inventor： HEINZ MARION ,  WIEGMANN WERNER ,  ROTERMUND UDO ,  BIEDERMANN ANJA ,  REICHELT MICHAEL

    IPC: C08J9/02 ,  C08G18/28 ,  C08G18/48 ,  C08G18/66 ,  C08G101/00 ,  C08J9/14

    Abstract: PROBLEM TO BE SOLVED: To obtain an isocyanate-based rigid foam having an open-cell type micro pore by making an polyisocyanate react with a compound having a plural ity of active hydrogen atoms capable of reacting with the isocyanate in the presence of a water foaming agent, a catalyst, an auxiliary and an additive. SOLUTION: A polyisocyante is made to react with a compound containing a plurality of hydrogen atoms capable of reacting with an isocyante such as a hydroxyl group-containing ester represented by the formula having a functionally of 2-8 and a molecular weight of 300-8,000 in the presence of water and, if necessary, an organic compound acting as a physical foaming agent, a catalyst, an auxiliary and an additive to produce an open-cell type rigid foam represented by the formula (wherein (m) is 1-15; (n), (p), (r) and (t) are each 0-1; (o), (q), (s) and (v) are each 0-15; (u) is 0-10; X is 1-5; Y is 1-4; Z is 0-3; Zi is 0.1-3; R1 and R3 have each an aliphtic structure not containing a polyalcoholic hydroxyl group; and R2 is a group not containing COOH group of a polycarboxylic acid.

    6.
    发明专利
    未知

    公开(公告)号：AT386762T

    公开(公告)日：2008-03-15

    申请号：AT03026095

    申请日：2003-11-13

    Applicant: BASF AG

    Inventor： HEINZ MARION ,  ROTERMUND UDO DR ,  HUNTEMANN PETER ,  SCHILLING UDO

    IPC: C08G18/48 ,  C08G18/08 ,  C08G18/66 ,  C08G18/76 ,  C08K7/28 ,  F16L59/14

    Abstract: Isocyanate adducts (I) made by reacting polyisocyanate(s) with compounds containing at least 2 NCO-reactive hydrogens, showing a crystallinity of less than 10 J/g by DSC, and an aromatics content of less than 31 wt.%, given as carbon atoms in aromatic rings. An Independent claim is also included for a method for the production of (I) by reacting (a) at least difunctional isocyanates with (b) compound(s) with at least 2 NCO-reactive H atoms in presence of (c) catalysts, in which (b) comprise (bi) polyether-polyol(s) with a functionality of more than 2.5 and a mol. wt. of more than 300 (preferably 300-1000) and (bii) polyol(s) with a functionality of 1.7-3 and a mol. wt. of more than 1000, and the reaction is carried out with an isocyanate index of less than 200.

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