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10 条记录 (耗时 0.02 秒)

    Process for preparing viscosity-stabilized reactive toluene diisocyanate distillation residues and blends thereof
    4.
    发明授权
    Process for preparing viscosity-stabilized reactive toluene diisocyanate distillation residues and blends thereof 失效
    制备粘度稳定的反应性甲苯二异氰酸酯蒸馏残余物及其共混物的方法

    公开(公告)号：US5216042A

    公开(公告)日：1993-06-01

    申请号：US727707

    申请日：1991-07-10

    申请人： Rory D. Daussin ,  Steven B. Lowenkron ,  John L. Nafziger

    发明人： Rory D. Daussin ,  Steven B. Lowenkron ,  John L. Nafziger

    IPC分类号： C07C263/20

    CPC分类号： C07C263/20 ,  C08G18/092 ,  C08G18/721 ,  C08G18/727 ,  C08G18/794 ,  C08G2101/0025 ,  C08G2105/02

    摘要： A method of preparing viscosity-stabilized toluene diisocyanate distillation residues comprising contacting toluene diisocyanate distillation residue with a material suitable for purging chloride-containing vapors under reaction conditions suitable to remove chloride-containing vapors from the toluene diisocyanate distillation residues. The material may be, for example, an aromatic solvent and/or a gas which associates, physically, chemically, or a combination thereof, with the vapors but not with significant amount of other components that may be present in the toluene diisocyanate distillation residue. The viscosity-stabilized and reactive residue can then be used alone or blended with one or more other isocyanate products, such as polymeric methylene diphenylisocyanate, to prepare materials such as polyurethane, polyisocyanurate, polyurethane-polyurea or polyurea compositions including, for example, foams.

    摘要翻译： 制备粘度稳定的甲苯二异氰酸酯蒸馏残余物的方法，包括使甲苯二异氰酸酯蒸馏残余物与适合于在适用于从甲苯二异氰酸酯蒸馏残余物除去含氯化物的蒸气的反应条件下清洗含氯化物蒸气的材料接触。 该材料可以是例如芳族溶剂和/或其物理，化学或其组合与蒸气缔合而不与可能存在于甲苯二异氰酸酯蒸馏残余物中的显着量的其它组分缔合的气体。 然后可以单独使用粘度稳定和反应性残余物或与一种或多种其它异氰酸酯产物（例如聚合亚甲基二苯基异氰酸酯）共混以制备例如聚氨酯，聚异氰脲酸酯，聚氨酯 - 聚脲或聚脲组合物的材料，包括例如泡沫。

    Process for preparing polyols
    6.
    发明授权
    Process for preparing polyols 失效
    多元醇制备方法

    公开(公告)号：US4282387A

    公开(公告)日：1981-08-04

    申请号：US107242

    申请日：1979-12-26

    申请人： Franciszek Olstowski ,  John L. Nafziger

    发明人： Franciszek Olstowski ,  John L. Nafziger

    IPC分类号： C08G18/48 ,  C08G65/26 ,  C08G65/28

    CPC分类号： C08G18/4866 ,  C08G65/2651

    摘要： The invention describes an improved process for preparing polyols by reacting a mono-epoxy compound such as propylene oxide with a hydroxyl-containing initiator compound such as glycerine in the presence of a catalyst, the improvement being that the catalyst is added in the form of a calcium, strontium or barium salt of an organic acid such as acetic acid.Polyols prepared by this process can be employed to prepare polyurethanes without removing the catalyst.

    摘要翻译： 本发明描述了通过在催化剂存在下使单环氧化合物如环氧丙烷与含羟基的引发剂化合物如甘油反应来制备多元醇的改进方法，其改进是以 钙，锶或钡盐等有机酸如乙酸。 通过该方法制备的多元醇可用于制备聚氨酯而不除去催化剂。

    Process for reducing the quantity of hydrolyzable chlorides in isocyanates
    9.
    发明授权
    Process for reducing the quantity of hydrolyzable chlorides in isocyanates 失效
    降低异氰酸酯中可水解氯化物的量的方法

    公开(公告)号：US4996351A

    公开(公告)日：1991-02-26

    申请号：US7317

    申请日：1987-01-27

    申请人： John L. Nafziger ,  Mark J. Hazelrigg

    发明人： John L. Nafziger ,  Mark J. Hazelrigg

    IPC分类号： C07C263/20

    CPC分类号： C07C263/20

    摘要： This invention is a process for removing volatile impurities from a crude isocyanate compound which is prepared in the phosgenation of a primary amine, comprising heating said crude isocyanate compound to a temperature to volatilize said volatile impurities in the presence of an acidic material containing a plurality of strong acid groups. The process permits faster, more complete removal of hydrolyzable chloride impurities than conventional processes.

    摘要翻译： 本发明是一种从在伯胺光气化中制备的粗异氰酸酯化合物中除去挥发性杂质的方法，其中包括将含有多种硫酸的酸性物质存在下将所述粗异氰酸酯化合物加热至挥发所述挥发性杂质的温度 强酸基团。 该方法允许比常规方法更快，更完整地除去可水解的氯化物杂质。

    Process for preparing stable solutions of trimerized isocyanates in monomeric polyisocyanates
    10.
    发明授权
    Process for preparing stable solutions of trimerized isocyanates in monomeric polyisocyanates 失效
    在单体多异氰酸酯中制备三聚异氰酸酯的稳定溶液的方法

    公开(公告)号：US4552902A

    公开(公告)日：1985-11-12

    申请号：US685269

    申请日：1984-12-24

    申请人： John L. Nafziger ,  Mark A. Snyder ,  Larry W. Mobley

    发明人： John L. Nafziger ,  Mark A. Snyder ,  Larry W. Mobley

    IPC分类号： C08G18/79 ,  C08G18/80 ,  C08G18/14 ,  C08G18/18

    CPC分类号： C08G18/791 ,  C08G18/8006 ,  Y10S521/902

    摘要： Trimerized isocyanates having improved solubility in polyisocyanates are prepared by reacting a polyisocyanate with a low equivalent weight polyol to form a first prepolymer, forming a cotrimer from said first prepolymer by reaction of same with diphenylmethane diisocyanate or polymeric derivatives thereof, and forming a second isocyanate terminated prepolymer by reacting said cotrimer with a second low equivalent weight polyol. The resulting cotrimer can be diluted in a polyisocyanate and used to prepare polymers, particularly polyurethane foams, having excellent properties.

    摘要翻译： 通过使多异氰酸酯与低当量多元醇反应以形成第一预聚物，通过与二苯基甲烷二异氰酸酯或其聚合衍生物反应形成来自所述第一预聚物的三聚体，形成第二异氰酸酯封端的三聚体异氰酸酯 通过使所述的聚酰胺与第二低当量多元醇反应来制备预聚物。 所得的三聚体可以在多异氰酸酯中稀释并用于制备具有优异性能的聚合物，特别是聚氨酯泡沫。