FLAT COMPOSITE MATERIAL
    23.
    发明专利

    公开(公告)号:DE3566870D1

    公开(公告)日:1989-01-26

    申请号:DE3566870

    申请日:1985-10-18

    Applicant: BASF AG

    Abstract: Sheet-like reinforced materials consisting of A. a core layer comprising a sheet-like textile structure, preferably a glass fiber mat, B. a plastic matrix composed of a nylon which has been polymerized under alkaline conditions and penetrates both the core layer and the surface layer of layers, are produced batchwise by the RIM method or continuously on a double-belt press by impregnating the sheet-line textile structure and the foam sheets with a lactam melt and polymerizing the latter. The reinforced material can be used for the production of finished articles having a satisfactory surface, for example for the automotive or aircraft industry.

    25.
    发明专利
    未知

    公开(公告)号:DE3519692A1

    公开(公告)日:1986-12-04

    申请号:DE3519692

    申请日:1985-06-01

    Applicant: BASF AG

    Abstract: The invention is a process for the preparation of elastic polyurethane flexible foams having densities from approximately 25 to 60 kg/m3, and producing molded articles in closed molds at temperatures from 25 DEG to 80 DEG C., comprising reacting (A) an organic polyisocyanate prepolymer having an isocyanate content from 6 to 20 percent by weight prepared by reacting a toluene diisocyanate and/or a diphenylmethane diisocyanate with a di- to tetrafunctional polyether polyol having a hydroxyl number from 20 to 50 and oxyethylene terminal group content of at least 10 to 30 percent by weight (B) a mixture of compounds containing reactive hydrogen atoms, comprising a mixture of (a) from 55 to 89.5 parts by weight of at least one di- to tetrafunctional polyether polyol having a hydroxyl number of from 20 to 80 and less than 10 percent by weight terminal oxyethylene groups, (b) from 0.5 to 20 parts by weight of at least one alkanolamine, and (c) from 10 to 25 parts by weight water, in the presence of (C) a blowing agent, (D) a catalyst, and optionally (E) auxiliaries and/or additives.

    28.
    发明专利
    未知

    公开(公告)号:AT253604T

    公开(公告)日:2003-11-15

    申请号:AT99104861

    申请日:1999-03-11

    Applicant: BASF AG

    Abstract: A process for the production of compact, transparent polyisocyanate-polyaddition products by reacting (a) isocyanates with (b) compounds which react with isocyanates, optionally in the presence of catalysts and/or additives etc., in which (b) is a mixture with an average functionality of more than 3 and an average hydroxyl number of 300-950 mg KOH/g. Independent claims are also included for (a) compact, transparent polyisocyanate-polyaddition products obtained by this process; and (b) sun roofs, front, rear and side windows for cars or aircraft, and lamp covers containing these products.

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