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    • 2. 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
    • Apparatus for discharging high viscosity media in chemical engineering
    • 化学工程中用于排放高粘度介质的设备
    • US4617089A
    • 1986-10-14
    • US713615
    • 1985-03-19
    • Martin UllrichManfred HederichFrank Wingler
    • Martin UllrichManfred HederichFrank Wingler
    • B05C5/00B01D1/00B01J4/00B29B7/48B29C47/42C08F6/00C08F6/10
    • B29B7/485B29C47/0014B29C47/0021B29C47/42
    • The discharge apparatus comprises an at least four-shaft screw pump having engaging shafts (1,2,3,4) which rotate in opposite directions in pairs. The viscous product to be processed is caught up over a large area and removed by the screws. A double shaft screw pump is connected downstream of the actual collection zone as a pressure build-up zone. The two center screws (2, 3) of the collection zone merge equiaxially into the screw shafts (2a, 3a) of the pressure build-up zone. The collection zone and the pressure build-up zone are combined into one constructional unit. At least one screw shaft is driven. The resulting high viscosity product strands (7) are caught up by the screws in the collection zone and are moved on into the pressure build-up zone. The double shaft screw pump is used for the build up of a high operational pressure and thus provides the prerequisite for the subsequent connection of further procedural stages. The universal possibilities of use of this discharge apparatus are to be stressed in particular.
    • 排放装置包括至少四轴螺杆泵,其具有成对地以相反方向旋转的接合轴(1,2,3,4)。 待处理的粘性产品被夹在大面积上并用螺丝除去。 双轴螺杆泵连接在实际收集区的下游,作为压力积聚区。 收集区的两个中心螺钉(2,3)均匀地合并到增压区的螺杆轴(2a,3a)中。 收集区和压力积聚区组合成一个结构单元。 至少有一个螺丝轴被驱动。 所得到的高粘度产品股线(7)被收集区域中的螺钉卡住,并移动到压力增加区域中。 双轴螺杆泵用于建立高操作压力,因此为后续连接进一步的程序阶段提供了先决条件。 特别要强调使用该放电装置的普遍可能性。