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    POLYURETHAN-SCHMELZKLEBSTOFFE MIT LANGER REAKTIVIERBARKEIT
    1.
    发明授权
    POLYURETHAN-SCHMELZKLEBSTOFFE MIT LANGER REAKTIVIERBARKEIT 有权
    WITH LONG reactivability聚氨酯热熔胶

    公开(公告)号：EP1664146B1

    公开(公告)日：2012-02-08

    申请号：EP04765098.1

    申请日：2004-09-11

    申请人： Henkel AG & Co. KGaA

    发明人： KREBS, Michael ,  FRANKEN, Uwe ,  KREMER, Christian

    IPC分类号： C08G18/10 ,  C08G18/76 ,  C09J175/04 ,  C09J5/06

    CPC分类号： C08G18/4202 ,  C08G18/12 ,  C08G2170/20 ,  C08G2250/00 ,  C08L75/04 ,  C09J5/06 ,  C09J2475/00 ,  C08G18/307

    摘要： Adhesives based on polyurethane reactive compounds which are obtainable by reacting at least one type of polyol with at least one type of diisocyanate containing at least 80 percent by weight 2,4'-diphenyl- associated with a along reactivation time. The inventive method consists in applying methyl diisocyanate (2,4'-MDI) are convenient for hot-melt adhesion methods associated with a along reactivation time. The inventive method consists in applying adhesive to a surface to be glued of at least one substrate, thermally reactivating the adhesive layers of substrates provided with the adhesive in association with temporal and/or spatial separation of the adhesive application and after said reactivation in jointing the substrates to be stuck together. According to said invention, the substrates jointed according said method do not exhibit any negative difference with respect to adherence or ageing characteristics in comparison with substrates bonded according to classic methods, i.e. directly jointed after an adhesive application.

    REAKTIVE POLYURETHANE MIT EINEM GERINGEN GEHALT AN MONOMEREN DIISOCYANATEN
    6.
    发明授权
    REAKTIVE POLYURETHANE MIT EINEM GERINGEN GEHALT AN MONOMEREN DIISOCYANATEN 有权
    具有低单体二异氰酸酯含量聚氨酯反应性

    公开(公告)号：EP1456266B1

    公开(公告)日：2012-08-01

    申请号：EP02798333.7

    申请日：2002-12-13

    申请人： Henkel AG & Co. KGaA

    发明人： KREBS, Michael

    IPC分类号： C08G18/10 ,  C08G18/72 ,  C09J175/04

    CPC分类号： C09J175/04 ,  C08G18/10 ,  C08G2170/20 ,  C08G18/7671 ,  C08G18/307

    摘要： The invention relates to reactive polyurethane compositions that can be produced by reacting polyols with a stoichiometric excess of mixtures consisting of asymmetric polyisocyanates having a molecular weight of less than 500 and an NCO functionality ranging from 0.175 to 2.5 and high-molecular isocyanates. These high-molecular polyisocyanates consist, according to WO 01/40342, of low-molecular diols and of monomeric diisocyanates. These reactive polyurethane compositions are suited for producing reactive hot-melt-type adhesives, solvent-free or solvent-containing laminating adhesives, assembly foams, casting compounds, soft/hard and integral foams and for producing reactive one-component or two-component adhesives/sealants.

    SEGMENTIERTE POLYURETHAN-SCHMELZKLEBSTOFF-ZUSAMMENSETZUNGEN
    9.
    发明授权
    SEGMENTIERTE POLYURETHAN-SCHMELZKLEBSTOFF-ZUSAMMENSETZUNGEN 有权
    链段化聚氨酯熔融粘合剂组合物

    公开(公告)号：EP1525243B1

    公开(公告)日：2009-02-25

    申请号：EP03766250.9

    申请日：2003-07-22

    申请人： Henkel AG & Co. KGaA

    发明人： KREBS, Michael ,  FRANKEN, Uwe ,  LOHR, Christoph

    IPC分类号： C08G18/10 ,  C08G18/42 ,  C09J175/04

    CPC分类号： C09J175/04 ,  C08G18/10 ,  C08G18/4252 ,  C08G18/307

    摘要： Compositions containing a reaction product of a stochiometic excess of a polyisocyanate with hydroxy functional polyester-ether-block copolymers based on aromatic dicarboxylic acids, a reaction product of a polyisocyanate with a polyester polyol and/or optionally, a reaction product of a polyisocyanate with a polyester polyol and/or, optionally, a reaction product of a polyisocyanate with a polyether polyol and, optionally, non-reactive thermoplastic polymers. Said compositions are suitable for use as reactive melt adhesives. The use of reaction products of the hydrofunctional polyester-ether block copolymers with polyisocyantaes enables the block copolymer constitutional unit to be solidly incorporated into the adhesive matrix, increases the reactive part in the adhesive composition and results in better heat resistance and hydrolysis resistance while, at the same time, lowering ther melting point of the polyester-ether copolymer components without any adverse effects on heat resistance and setting speed. The compatibility of the components of the composition is also increased as a result of said incorporation into the polymer matrix.