12.
    发明专利
    未知

    公开(公告)号:DE3669840D1

    公开(公告)日:1990-05-03

    申请号:DE3669840

    申请日:1986-08-12

    Applicant: BASF AG

    Abstract: 1. A method for reducing the permeability of blow moldings of thermoplastics, in particular of high molecular weight HDPE, in which a tubular parison is expanded within a blow mold by means of a blow gas and caused to rest against the internal contour of the blow mold, and the blow molding is exposed to the action of a reactive treatment gas, wherein the blow molding is brought into contact with the reactive treatment gas in a cooling mold at a temperature of not less than 110 degrees C at the internal surface of the said molding.

    17.
    发明专利
    未知

    公开(公告)号:AT243236T

    公开(公告)日:2003-07-15

    申请号:AT98919232

    申请日:1998-04-07

    Applicant: BASF AG

    Abstract: The shaped article consists ofa) from 5 to 95% by weight of a molding composition A made from at least one thermoplastic polyamide, copolyamide or blends of these as component A1, fillers and/or reinforcing materials, if desired, as component A2, impact modifiers as component A3 and other additives and processing aids as component A4, andb) from 5 to 95% by weight of a molding composition B, made from at least one thermoplastic polyamide, copolyamide or blends of these as component B1, at least one crosslinked elastomeric polymer as component B2 and, if desired, other additives and processing aids as component B3,where, in the shaped article, segments of molding compositions A and B are connected to one another over a relatively large area. These shaped articles may be used in the motor vehicle sector, for example as air or coolant ducts.

    19.
    发明专利
    未知

    公开(公告)号:DE3529870A1

    公开(公告)日:1987-02-26

    申请号:DE3529870

    申请日:1985-08-21

    Applicant: BASF AG

    Abstract: 1. A method for reducing the permeability of blow moldings of thermoplastics, in particular of high molecular weight HDPE, in which a tubular parison is expanded within a blow mold by means of a blow gas and caused to rest against the internal contour of the blow mold, and the blow molding is exposed to the action of a reactive treatment gas, wherein the blow molding is brought into contact with the reactive treatment gas in a cooling mold at a temperature of not less than 110 degrees C at the internal surface of the said molding.

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