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    PROCESS FOR THE MANUFACTURE OF POSSIBLY CELLULAR POLYURETHANE ELASTOMERS
    31.
    发明专利
    PROCESS FOR THE MANUFACTURE OF POSSIBLY CELLULAR POLYURETHANE ELASTOMERS 未知

    公开(公告)号：DE3274115D1

    公开(公告)日：1986-12-11

    申请号：DE3274115

    申请日：1982-06-25

    Applicant: BASF AG

    Inventor： NISSEN DIETMAR DR ,  STRAEHLE WOLFGANG DR ,  MARX MATTHIAS DR

    IPC: C08G18/48 ,  C08G18/66 ,  C08G18/14

    Abstract: A process for the preparation of optionally cellular and non-cellular polyurethane elastomers, preferably by reaction injection molding, organic polyisocyanates, polyether polyols based on polyoxyalkylene polyether polyols with terminal hydroxyethylene groups and an ethoxylation degree of 1 to 13, having a content of primary hydroxyl groups at the corresponding degree of ethoxylation as the value of curve A to 100 percent with curve A describing the dependency of the primary hydroxyl group content upon the degree of ethoxylation are reacted with chain extenders and/or cross-linking agents in the presence of catalysts as well as optionally blowing agents, auxiliaries and additives.

    PROCESS FOR THE PRODUCTION OF MOULDED BODIES ON THE BASIS OF POLYURETHANE OR POLYURETHANE-POLYUREA ELASTOMERS WITH A PARTICULAR LIGHT AND WEATHER RESISTANCE
    32.
    发明专利
    PROCESS FOR THE PRODUCTION OF MOULDED BODIES ON THE BASIS OF POLYURETHANE OR POLYURETHANE-POLYUREA ELASTOMERS WITH A PARTICULAR LIGHT AND WEATHER RESISTANCE 未知

    公开(公告)号：DE3365987D1

    公开(公告)日：1986-10-16

    申请号：DE3365987

    申请日：1983-04-21

    Applicant: BASF AG

    Inventor： NISSEN DIETMAR DR ,  MARX MATTHIAS DR ,  SCHMIDT HANS ULRICH

    IPC: C08G18/08 ,  C08G18/42 ,  C08G18/66 ,  C08G18/14

    Abstract: The invention relates to a process for the preparation of elastomeric molded parts having urethane or urethane and urea linkages which comprises reacting (a) an organic polyisocyanate, (b) a polyhydroxyl compound selected from the group consisting of (i) polyester polyols with molecular weights of 1000 to 3000 and hydroxyl numbers of 170 to 35 produced by polycondensation of organic dicarboxylic acids and a polyol mixture of at least 3 polyols; (ii) polyether polyols having terminal ester groups, molecular weights of 1000 to 8000 and hydroxyl numbers of 170 to 15; and (iii) mixtures thereof; (c) a chain extender wherein components (a) through (c) are processed according to reaction injection molding techniques in open or closed molds. The reaction is preferably carried out as a one-shot process and may also be carried out in the presence of blowing agents (d), auxiliaries (e), and additives (e). The non-cellular and/or microcellular elastomeric molded parts produced according to the method of this invention are particularly well suited for use in the automobile industry, for example, as bumper covers and body parts such as fenders, spoilers, wheel well expansions as well as engineering housing parts and runners. The cellular foams are used, for example, as shoe soles, armrests, headrests, safety coverings in the passenger compartment in automobiles as well as motorcycle and bicycle seats, seat cushions and cover layers in composite foams.

    36.
    发明专利
    未知

    公开(公告)号：DE3436098A1

    公开(公告)日：1986-04-17

    申请号：DE3436098

    申请日：1984-10-02

    Applicant: BASF AG

    Inventor： WERNER FRANK DR ,  MARX MATTHIAS DR ,  SCHMIDT HANS ULRICH

    IPC: C08G18/65 ,  C08G18/79 ,  C08G18/80 ,  C08G18/78 ,  C08G18/14

    Abstract: The invention relates to a process for the preparation of cellular or non-cellular polyurethane-polyurea molded articles. The new process involves the use of urethane and isocyanurate group modified 2,4- and/or 2,6-toluene diisocyanate mixtures as the polyisocyanate component to improve the flowability of the reaction mixture without adversely affecting the mechanical properties of the resulting molded articles.

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