1.
    发明专利
    未知

    公开(公告)号:DE50101434D1

    公开(公告)日:2004-03-11

    申请号:DE50101434

    申请日:2001-10-26

    Applicant: DEGUSSA

    Abstract: A molding composition of at least 50% by weight of a polyamine-polyamide copolymer obtained from 0.05 to 2.5% by weight of a polyamine having at least 4 nitrogen atoms and having a viscosity of at least 5 000 Pa.s at 250° C. and at a shear rate of 0.1 l/s, and having a viscosity ratio of at least 7 at 250° C., when the melt viscosities at shear rates of 0.1 l/s and 100 l/s are compared with one another, has high melt stiffness and is easy to cut, and performs well in blow molding.

    2.
    发明专利
    未知

    公开(公告)号:DE59702997D1

    公开(公告)日:2001-03-22

    申请号:DE59702997

    申请日:1997-08-21

    Applicant: DEGUSSA

    Abstract: The multi-layer plastics pipe has a support polymer inside which is embedded at least one layer of a blocking polymer. The two types of polymer are bonded together to provide a flexible pipe for the safe handling of different chemicals eg. fuels. The bonding/support polymer layers each side of the layer of blocking polymer are linked by narrow bridges through the blocking polymer. The bonding between the layers is improved by surface profiling of the blocking polymer.

    6.
    发明专利
    未知

    公开(公告)号:DE50004759D1

    公开(公告)日:2004-01-29

    申请号:DE50004759

    申请日:2000-01-21

    Applicant: DEGUSSA

    Abstract: The thermoplastic composite material comprises a polyamide layer bonded to a polyester layer by means of an adhesive (I) comprising a blend of polyamide prepared from stoichiometric amounts of a diamine containing 6-12C atoms and dicarboxylic acids, and a polyester prepared from a diol containing a mixture of dicarboxylic acids. Thermoplastic composite material comprises a polyamide layer bonded to a polyester layer by means of an adhesive (I) comprising at least 50 wt.% of a blend of: (a) 20-80 wt.% of a polyamide prepared from stoichiometric amounts of a diamine containing 6-12C atoms and dicarboxylic acids, including at least 5 mol% of dicarboxylic acids (II) containing 10-36 C atoms; and (b) 20-80 wt.% of a polyester prepared from a diol containing 2-12 C atoms and a mixture of 30-95 mol% of an aromatic dicarboxylic acid containing 6-20 C atoms and 5-70 mol% (II). Independent claims are also included for the following: (1) production of the composite material by multicomponent injection molding, coextrusion or coextrusion/blow molding; (2) an adhesive as defined for (I).

    7.
    发明专利
    未知

    公开(公告)号:DE50100321D1

    公开(公告)日:2003-07-24

    申请号:DE50100321

    申请日:2001-10-26

    Applicant: DEGUSSA

    Abstract: A multilayer composite comprising the following layers bound directly to one another:I. a layer I of a polyamide molding composition;II. a layer II of a bonding agent comprising at least 50% by weight of a mixture ofa) from 30 to 70 parts by volume of polyamide andb) from 70 to 30 parts by volume of polyolefin, where the sum of the parts by volume is 100 and in addition at least some of the polyamide is present either in the form of a polyamide-polyolefin graft copolymer or as a highly branched polyamine-polyamide copolymer;III. if desired a layer III of a polyolefin molding composition,displays good adhesion between layers which remains largely intact even on prolonged contact with alcohol-containing or aqueous media at elevated temperature.

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