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16 条记录 (耗时 0.014 秒)

    Flexible polyurea foams having controlled load bearing qualities
    8.
    发明授权
    Flexible polyurea foams having controlled load bearing qualities 失效
    具有受控承载质量的柔性聚脲泡沫

    公开(公告)号：US5106884A

    公开(公告)日：1992-04-21

    申请号：US264126

    申请日：1988-10-28

    申请人： Robert B. Turner ,  Ralph D. Priester, Jr. ,  Robert A. Kuklies ,  Richard D. Peffley ,  Ronald M. Herrington ,  James R. Porter

    发明人： Robert B. Turner ,  Ralph D. Priester, Jr. ,  Robert A. Kuklies ,  Richard D. Peffley ,  Ronald M. Herrington ,  James R. Porter

    IPC分类号： C08J9/00

    CPC分类号： C08J9/0066 ,  C08J2375/02

    摘要： The invention includes a process for preparing a flexible, water-blown polyurea foam by reacting a reaction mixture containing at least one polyisocyanate component and an active hydrogen component, wherein active hydrogen compounds of relatively high equivalent weight have an average of about 1.5 to about 4 active hydrogen-containing groups per molecule, of which active hydrogen-containing groups: an average of (a) from about 5 to about 60 percent are primary aliphatic amine groups or (b) at least about 25 percent are primary aromatic, secondary aliphatic, Lewis acid-blocked primary or secondary aliphatic or aromatic amine groups or mixtures of such groups. An amount of at least one alkali metal halide salt effective to increase load bearing strength of the foam is incorporated into the reaction mixture. Differing amounts of alkali metal halide salts are suitably incorporated into different areas of the foam to produce areas having differing load bearing strengths. The invention includes the foams formed by the processes of the invention as well as active hydrogen compositions containing the alkali metal halide salts and useful in the processes.

    摘要翻译： 本发明包括通过使包含至少一种多异氰酸酯组分和活性氢组分的反应混合物反应来制备柔性水喷雾聚脲泡沫的方法，其中相当高当量重量的活性氢化合物的平均值为约1.5至约4 活性含氢基团：其中活性含氢基团的平均（a）约5至约60％是伯脂族胺基团，或（b）至少约25％为伯芳族，仲脂肪族， 路易斯酸封闭的伯或仲脂族或芳族胺基或这些基团的混合物。 一定量的至少一种有效增加泡沫承载强度的碱金属卤化物盐被加入到反应混合物中。 不同量的碱金属卤化物盐适当地掺入到泡沫的不同区域中以产生具有不同承载强度的区域。 本发明包括通过本发明方法形成的泡沫以及含有碱金属卤化物盐的活性氢组合物并且可用于该方法。

    Chain extenders for polyurethanes
    9.
    发明授权
    Chain extenders for polyurethanes 失效
    聚氨酯增链剂

    公开(公告)号：US4931487A

    公开(公告)日：1990-06-05

    申请号：US164043

    申请日：1988-03-04

    申请人： Ralph D. Priester, Jr. ,  Edwin J. Strojny ,  Debra H. Stutts

    发明人： Ralph D. Priester, Jr. ,  Edwin J. Strojny ,  Debra H. Stutts

    IPC分类号： C08G18/38 ,  C08G18/65

    CPC分类号： C08G18/3863 ,  C08G18/3814 ,  C08G18/3838 ,  C08G18/3842 ,  C08G18/6529 ,  C08G2120/00

    摘要： Polyurethanes are produced from compositions comprising at least one relatively high equivalent weight component and at least one chain extender selected from the group consisting of heterocyclic diamines, diaromatic disulfides, alkyl ethers of halogen-substituted aromatic diamines, polysubstituted alkyl diamines and alkyl acid esters of halogen-substituted diamino phenols of designated structures. Polyurethanes having high thermal stability, high tear strength and high modulus are produced.

    摘要翻译： 聚氨酯由包含至少一种相对高当量的组分和至少一种选自杂环二胺，二芳族二硫化物，卤素取代的芳族二胺的烷基醚，多取代的烷基二胺和卤素的烷基酸酯的增链剂组成的组合物制备 指定结构的取代二氨基酚。 产生具有高热稳定性，高撕裂强度和高模量的聚氨酯。