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    • 4. 发明授权
    • Thermoplastic polyurethaneurea elastomers
    • 热塑性聚氨酯脲弹性体
    • US5739252A
    • 1998-04-14
    • US657852
    • 1996-05-31
    • Stephan KirchmeyerHanns Peter MullerMartin UllrichUlrich Liesenfelder
    • Stephan KirchmeyerHanns Peter MullerMartin UllrichUlrich Liesenfelder
    • C08G18/00C08G18/08C08G18/30C08G18/32C08G18/65C08G18/10
    • C08G18/302C08G18/08C08G18/65
    • Thermoplastic polyurethaneurea elastomers prepared from organic polyisocyanates (A) and a mixture (B) containing Zerewitinoff active hydrogen atoms are disclosed. The mixture (B) is prepared from 1) 40 to 85 equivalent-% (relative to isocyanate groups in (A)) of one or more compounds having an average of at least 1.8 Zerewitinoff active hydrogen atoms and a number average molecular weight of 400 to 10,000, 2) 10 to 60 equivalent-% (relative to isocyanate groups in (A)) of water and 3) 0 to 45 equivalent-% (relative to isocyanate groups in (A)) of one or more chain extenders having an average of at least 1.8 Zerewitinoff active hydrogen atoms and a molecular weight of 62 to 400. The preparation process comprise mixing (A) and (B) in a static mixer under conditions in which no reaction occurs between (A) and (B), and reacting the mixture in a second static mixer. The resulting polyurethaneurea elastomer is useful for the production of moldings.
    • 公开了由有机多异氰酸酯(A)和含有Zerewitinoff活性氢原子的混合物(B)制备的热塑性聚氨酯脲弹性体。 混合物(B)由1)40至85当量%(相对于(A)中的异氰酸酯基团)制备的平均具有至少1.8兹列维诺夫活性氢原子和数均分子量为400的一种或多种化合物 至10,000,2)10至60当量%(相对于(A)中的异氰酸酯基团))和3)0至45当量%(相对于(A)中的异氰酸酯基团))的一种或多种扩链剂,其具有 平均为至少1.8兹列维诺夫活性氢原子,分子量为62至400.制备方法包括在(A)和(B)之间不发生反应的条件下,在静态混合器中混合(A)和(B) 并在第二静态混合器中使混合物反应。 所得的聚氨酯脲弹性体可用于制造模制品。
    • 6. 发明授权
    • Process for polyaddition products which contain uretdione groups and use
in coatings
    • 含有脲二酮基团并用于涂料的加聚产物的方法
    • US4044171A
    • 1977-08-23
    • US569112
    • 1975-04-17
    • Hanns Peter MullerKuno WagnerRichard Muller
    • Hanns Peter MullerKuno WagnerRichard Muller
    • C09D5/03C08G18/00C08G18/28C08G18/30C08G18/79C09D5/46C09D175/00B05D7/26
    • C08G18/30C08G18/2805C08G18/798C08G2150/20C08G2250/00
    • The present invention teaches a novel polyisocyanate lacquer binder and a method preparing it. The binder is prepared by reacing uretidione containing polyisocyanates optionally mixed with uretdione free diisocyanates with water or with low molecular weight compounds which have two alcoholic hyroxyl groups per molecule. Optionally these compounds may be mixed with up to 60 wt.% based on the total weight of hydroxyl bearing compounds, of low molecular weight compounds with one active alcoholic hydroxyl group per molecule. The proportion of reactants is so selected that the binder produces has from 5 to 20 wt.% of latent isocyanate groups in the form of unopened uretdione rings. The binder can then be mixed with polyhydroxyl compounds having molecular weights of 400 to 10,000 and conventional lacquer pigments and fillers. This mixture can then be coated on a substrate and the coating heated to above 110.degree. C to effect hardening.
    • 本发明教导了一种新型多异氰酸酯漆粘合剂及其制备方法。 粘合剂通过将含有脲基二酮的多异氰酸酯任选与不含二脲二脲的二异氰酸酯与水或每分子具有两个醇羟基的低分子量化合物混合来制备。 任选地,这些化合物可以与每分子具有一个活性醇羟基的低分子量化合物相比,含羟基化合物的总重量高达60重量%。 反应物的比例如此选择,使得粘合剂产生具有未打开的脲二酮环形式的5至20重量%的潜在异氰酸酯基团。 然后可以将粘合剂与分子量为400至10,000的多羟基化合物和常规漆颜料和填料混合。 然后将该混合物涂布在基材上,并将涂层加热至110℃以上以进行硬化。