83.
    发明专利
    未知

    公开(公告)号:DE19919826A1

    公开(公告)日:2000-11-02

    申请号:DE19919826

    申请日:1999-04-30

    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.

    84.
    发明专利
    未知

    公开(公告)号:ES2137025T3

    公开(公告)日:1999-12-01

    申请号:ES96941636

    申请日:1996-12-02

    Applicant: BASF AG

    Abstract: The invention relates to a process for preparing self-releasing, compact or cellular moulded bodies optionally containing reinforcing agents and made of polyisocyanate polyaddition products by reacting a) organic and/or modified organic polyisocyanates with b) at least one compound with at least two reactive hydrogen atoms and a molecular weight of 500 to 9,000 and optionally c) chain extension and/or cross-linking agents in the presence of d) alkyl and/or alkenyl succinic acid monoamides, -monoamides, poly(alkyl succinic acid)- and/or poly(alkenyl succinic acid)-polyamides, -polyimides, -monoamide monoimides, -polyamide imides, -amide polyimides and- polyamide polyimides or mixtures thereof as internal mould release agents, and also in the presence or absence of e) catalysts, f) blowing agents, g) reinforcing agents, h) auxiliary agents, in an open or closed moulding tool, optionally under compression. The invention also relates to the use of alkyl- and/or alkenyl succinic acid amides and/or imides (d) as internal mould release agents for the preparation of moulded bodies made of polyisocyanate polyaddition products.

    A LIQUID URETHANE-CONTAINING POLYISOCYANATE MIXTURE WHICH CAN BE USED TOPREPARE A POLYURETHANE FOAM

    公开(公告)号:CA2056951C

    公开(公告)日:1997-08-19

    申请号:CA2056951

    申请日:1991-12-04

    Applicant: BASF AG

    Abstract: A composite element which comprises A) at least one top layar of polyvinyl chloride or a polyvinyl chloride-containing polymer mixture, and B) a preferably semirigid or rigid polyurethane foam, the top layer (A) or the polyurethane foam (B) or the two constituents (A) and (B) containing units of an .alpha.,.beta.-olefinically unsaturated polyester having a molecular waight factor per double bond of from 150 to 3000, a process for the production of composite element3 of this type, and liquid, urethane-containing polyisocyanate mixtures based on diphenylmethane diisocyanates and higher homologs thereof and .alpha.,.beta.-olefinically unsaturated polyester for the preparation of the polyurethane foam (B) are dsscribed.

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