31.
    发明专利
    未知

    公开(公告)号:DE19813107A1

    公开(公告)日:1999-09-30

    申请号:DE19813107

    申请日:1998-03-25

    Applicant: BASF AG

    Abstract: Polyurethane foam is produced by reacting isocyanates with an isocyanurate and/or biuret structure with polyols of molecular weight 400-8000 containing at least 50% primary hydroxyl groups plus compounds with primary amino group(s), optionally low molecular weight diols and/or triols as chain extenders or crosslinkers, tert. amine and metal salt catalysts and water. A process for the production of foam material based on polyisocyanate-polyaddition products by reacting isocyanates with NCO-reactive compounds in the presence of blowing agents, catalysts and optionally additives etc., using (i) isocyanates with an isocyanurate and/or biuret structure; (ii) a di- and/or poly-alcohol(s) with a molecular weight of 400-8000 in which at least 50% of the hydroxyl groups are primary OH groups; (iii) a compound(s) with primary amine group(s), optionally with diols and/or triols with molecular weights of less than 400 as chain extenders and/or crosslinkers; (iv) a tert. amine(s) and/or a metal salt(s) as catalysts; and (v) water. Independent claims are also included for (a) a foam obtained by this process; and (b) a cushion material based on these products.

    39.
    发明专利
    未知

    公开(公告)号:DE502005002887D1

    公开(公告)日:2008-04-03

    申请号:DE502005002887

    申请日:2005-07-19

    Applicant: BASF AG

    Abstract: Preparation of polyurethane-foaming substance (A) with reduced emission comprises: reacting polyisocyante with a compound (B) containing at least two reactive hydrogen atoms of isocyanates in the presence of a catalysts, where the catalyst is at least an alcohol compound (I). Preparation of polyurethane-foaming substance (A) with reduced emission comprises: reacting polyisocyanate with a compound containing at least two reactive hydrogen atoms of isocyanates in the presence of a catalyst, where the catalyst is an alcohol compound of formula (I). R1, R2 : -C aH 2a+1 or -C bH cN d; a : 1-4; b : 3-7; c : 6-14; d : 0-2; R3 : C eH fO g; e : 0-4; f : 0-8; g : 0-2; R4 : H, CH 3 or C 2H 5; and n, m : 1-5. An independent claim is also included for the polyurethane-foaming substance obtained by the method with a content of volatile organic compounds (less than 100 ppm) and condensable compounds (less than 250 ppm). [Image].

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