41.
    发明专利
    未知

    公开(公告)号:PT944661E

    公开(公告)日:2001-07-31

    申请号:PT97954345

    申请日:1997-12-12

    Applicant: BASF AG

    Abstract: In a process for producing self-releasing, compact or cellular moldings which comprise polyisocyanate polyaddition products and may contain reinforcing material by reactinga) organic and/or modified organic polyisocyanates withb) at least one compound containing at least two reactive hydrogen atoms and having a molecular weight of from 62 to 10,000 and, if desired,c) chain extenders and/or crosslinkers in the presence ofd) internal mold release agents and in the presence of or absence ofe) catalysts,f) blowing agents,g) reinforcing materials andh) auxiliariesin an open or closed mold, the internal mold release agents (d) used are diesters and/or monoesters of alkylsuccinic acids and/or diesters and/or monoesters of alkenylsuccinic acids.

    Method for producing polyurethane foams

    公开(公告)号:AU4748300A

    公开(公告)日:2000-11-17

    申请号:AU4748300

    申请日:2000-04-17

    Applicant: BASF AG

    Abstract: According to the inventive method, the polyurethane foams are produced by reacting isocyanates with compounds that react with isocyanates in the presence of foaming agents and optionally, catalysts, additives and/or auxiliary agents. The method is characterised in that the reaction is carried out in the presence of at least one of the following compounds (i): alpha , beta -unsaturated carboxylic acid, alpha , beta -unsaturated carboxylic acid derivative, alpha , beta -unsaturated ketone and or alpha , beta -unsaturated aldehyde.

    PREPARATION OF FLEXIBLE, SOFT POLYURETHANE FOAMS HAVING VISCOELASTIC, STRUCTURE-BORNE SOUNDPROOFING PROPERTIES, AND POLYOXYALKYLENE-POLYOL MIXTURES WHICH CAN BE USED FOR THIS PURPOSE

    公开(公告)号:CA2031910C

    公开(公告)日:1998-06-02

    申请号:CA2031910

    申请日:1990-12-10

    Applicant: BASF AG

    Abstract: The present invention relates to a process for the preparation of flexible, soft polyurethane foams having viscoelastic, structure-borne sound-proofing properties in a temperature range of from -20.degree.C to +80.degree.C by reacting a) a polyoxyalkylene-polyol mixture containing ai) block polyoxypropylene-polyoxyethylene-polyol mixture having a hydroxyl number of from 14 to 65 and containing from 2 to 9 % by weight of terminal ethylene oxide units, based on the weight of the polyoxypropylene units, prepared by anionic polymerization, at elevated temperatures, of 1,2-propyleneoxide onto an initiator molecule mixture having a mean functionality of from 2.3 to 2.8, comprising water and ylycerol and/or trimethylolpropane, and polymerization of acylene oxide onto the resultant polyoxypropylene adduct, and aii) one or more difunctional and/or trifunctional polyoxypropylene-polyoxyethylene-polyol containing from 60 to 85 % by weight of oxyethylene units, based on the total weight of polymerized alkylene oxide units, and having a hydroxyl number of from 20 to 80, and b) if desired low-molecular-weight chain extenders with c) organic and/or modified organic polyisocyanates in the presence of d) catalysts, e) blowing agents, preferably water, and, if desired, f) auxiliaries and/or additives, and to the polyoxyalkylene-polyol mixtures (a) which can be used for this purpose.

    47.
    发明专利
    未知

    公开(公告)号:DE3682159D1

    公开(公告)日:1991-11-28

    申请号:DE3682159

    申请日:1986-09-30

    Applicant: BASF AG

    Abstract: Cellular or compact polyurethane-polyurea mouldings are prepd. by reaction of (a) organic polyisocyanates, (b) higher mol. cpds. with at least 2 reactive H, (c) aromatic diamines and opt. (d) other chain extenders and/or cross-linking agents, in presence of (e) internal realease agents, (f) catalysts, and opt. (g) blowing agents and (h) auxiliaries and/or additives, as a one-shot system, in closed moulds, by reaction injection moulding. The internal release agent (e) is (A) 0.1-10 wt.%, w.r.t. (b)-(d), a mixt. of (i) 5-80 pts. wt. of an amine and/or cyclic lactam, (ii) 20-95 pts. of a metal salt of stearic and/or isostearic acid, and (iii) 0-5 pts. of a metal salt of a mon- and/or di-carboxylic acid, and (B) 0.01-2 wt.%, w.r.t. (b)-(d) of a mono- and/or di-carboxylic acid or anhydride. The release agent is claimed.

    49.
    发明专利
    未知

    公开(公告)号:DE3631842A1

    公开(公告)日:1988-03-24

    申请号:DE3631842

    申请日:1986-09-19

    Applicant: BASF AG

    Abstract: Disclosed are internal mold release agents for the preparation of molded articles using polyisocyanate addition polymerization, which are comprised of: (A) at least one ketimine, aldimine, enamine, cyclic Schiff base or a mixture of at least two of said compounds; (B) at least one metal salt of an organic carboxylic acid having from 8 to 24 carbon atoms; and (C) optionally including at least one carboxylic acid, organic sulphonic acid, mineral acid, or amidosulphonic acid, and their use in preparing molded articles comprised of polyurethane-plastics, polyurea-plastics, polyurethane-polyurea-plastics, polyurethane-polyurea-polyamide-plastics, or polyurea-polyamide-plastics.

Patent Agency Ranking