REAKTIVE POLYURETHAN-ZUSAMMENSETZUNGEN MIT NIEDRIGEM RESTMONOMERGEHALT
    1.
    发明公开
    REAKTIVE POLYURETHAN-ZUSAMMENSETZUNGEN MIT NIEDRIGEM RESTMONOMERGEHALT 无效
    稀释性聚氨酯 - 苏木精

    公开(公告)号:EP1434811A1

    公开(公告)日:2004-07-07

    申请号:EP02782814.4

    申请日:2002-10-02

    摘要: Reaction products, from diphenylmethane-2,4'-diisocyanate with a fraction of at least 95 wt. % of 2,4' isomer with at least one polyether polyol and/or polyalkylene glycol with a molecular weight of less than 1,000 and/or a crystalline or part-crystalline, or glassy amorphous polyester polyol and, optionally, polyester polyols and/or polyether polyols with a molecular weight greater than 1,000, which are liquid at room temperature, can be reacted to give adhesive compositions with a very low content of residual monomeric diisocyanate of less than 0.5, preferably less than 0.25 wt. %. Said hot-melt adhesive compositions comprise, in addition to the low content of monomeric diisocyanate a high fusion stability and a low viscosity.

    摘要翻译: 本发明描述了含有至少95重量%的2,4'-二苯基甲烷二异氰酸酯的反应产物。 %的2,4'异构体与至少一种分子量小于1,000的聚醚多元醇和/或聚亚烷基二醇和/或一种结晶或部分结晶或玻璃态无定形聚酯多元醇和任选的聚酯多元醇和/或聚醚 在室温下液体并具有大于1,000的分子量的多元醇可以转化成具有小于0.5,优选小于0.25重量%的非常低含量的单体二异氰酸酯的粘合剂组合物。 %。 除了低含量的单体二异氰酸酯之外,这种热熔粘合剂组合物具有高熔体稳定性和低粘度。

    SEGMENTIERTE POLYURETHAN-SCHMELZKLEBSTOFF-ZUSAMMENSETZUNGEN
    8.
    发明公开
    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:EP1525243A1

    公开(公告)日:2005-04-27

    申请号:EP03766250.9

    申请日:2003-07-22

    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.