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29 条记录 (耗时 0.019 秒)

    Graft polyols prepared by a continuous process
    1.
    发明授权
    Graft polyols prepared by a continuous process 有权
    通过连续方法制备的接枝多元醇

    公开(公告)号：US06780932B2

    公开(公告)日：2004-08-24

    申请号：US10146280

    申请日：2002-05-15

    申请人： Duane A. Heyman ,  Mao-Yao Huang

    发明人： Duane A. Heyman ,  Mao-Yao Huang

    IPC分类号： C08F1606

    CPC分类号： C08F290/062

    摘要： Disclosed is a process for preparation of final graft polyols via a continuous process. In, addition, a final graft polyol formed by the process is disclosed. The process includes the steps of reacting a plurality of ethylenically unsaturated monomers and a reaction moderator with a macromer having induced unsaturation in the presence of a carrier polyol, a free radical polymerization initiator, and a first graft polyol. The process provides for the preparation of a final graft polyol having a solids level of from 30 to 70% in a continuous process. The final graft polyol produced by the process has a lower viscosity over a range of solids levels, a reduced amount of very large irregularly shaped particles, a reduced viscosity change in response to a change in reaction temperature compared to a typical graft polyol, a reduced tendency to foul the continuous reactor, and a broader particle size distribution compared to an identical graft polyol prepared by a semi-batch process.

    摘要翻译： 公开了通过连续方法制备最终的接枝多元醇的方法。 另外，公开了通过该方法形成的最终的接枝多元醇。 该方法包括以下步骤：在载体多元醇，自由基聚合引发剂和第一接枝多元醇的存在下使多个烯属不饱和单体和反应缓和剂与具有诱导的不饱和度的大分子单体反应。 该方法提供在连续方法中制备固体含量为30至70％的最终接枝多元醇。 通过该方法生产的最终的接枝多元醇在固体含量范围内具有较低的粘度，减少了非常大的不规则形状的颗粒的量，响应于与典型的接枝多元醇相比反应温度的变化而降低的粘度变化， 与通过半间歇法制备的相同的接枝多元醇相比，污染连续反应器的倾向和更宽的粒度分布。

    Polymer dispersions and their uses
    4.
    发明授权
    Polymer dispersions and their uses 失效
    聚合物分散体及其用途

    公开(公告)号：US4503193A

    公开(公告)日：1985-03-05

    申请号：US600885

    申请日：1984-04-16

    申请人： Duane A. Heyman

    发明人： Duane A. Heyman

    IPC分类号： C08F2/24 ,  C08L75/04 ,  C08L27/06

    CPC分类号： C08F2/24 ,  C08L75/04

    摘要： This invention relates to polymer dispersions prepared by the in situ polymerization of an ethylenically unsaturated monomer or mixture of monomers in a chain extender in the presence of a free radical polymerization initiator and a polyamide stabilizer.The invention also relates to mixtures of the polymer dispersions with compounds having two or more active hydrogen atoms as determined by the Zerewittinoff method. These mixtures are used to prepare polyurethane products.

    摘要翻译： 本发明涉及通过在自由基聚合引发剂和聚酰胺稳定剂的存在下在扩链剂中烯属不饱和单体或单体混合物的原位聚合制备的聚合物分散体。 本发明还涉及通过Zerewittinoff方法测定的聚合物分散体与具有两个或多个活性氢原子的化合物的混合物。 这些混合物用于制备聚氨酯产品。

    Process for preparing 2-benzimidazolones
    5.
    发明授权
    Process for preparing 2-benzimidazolones 失效
    制备2-苯并咪唑的方法

    公开(公告)号：US4113952A

    公开(公告)日：1978-09-12

    申请号：US818172

    申请日：1977-07-22

    申请人： Duane A. Heyman

    发明人： Duane A. Heyman

    IPC分类号： C07D235/26

    CPC分类号： C07D235/26

    摘要： This invention is directed to a process for preparing 2-benzimidazolone which comprises reacting 2'-carbamoylphthalanilic acid in an alkaline medium with a metal hypohalite.

    Polyether polyol for foam applications
    6.
    发明授权
    Polyether polyol for foam applications 失效
    用于泡沫应用的聚醚多元醇

    公开(公告)号：US06710096B2

    公开(公告)日：2004-03-23

    申请号：US10200650

    申请日：2002-07-22

    申请人： Raymond A. Neff ,  Duane A. Heyman

    发明人： Raymond A. Neff ,  Duane A. Heyman

    IPC分类号： C08G1828

    CPC分类号： C08G18/4072 ,  C08G18/482 ,  C08G18/4883 ,  C08G65/2606 ,  C08G65/2696 ,  C08G2101/0025 ,  C08G2101/005 ,  C08G2101/0083 ,  C08G2650/24

    摘要： Polyols initiated with a first initiator having a relatively high functionality averaging greater than eight and comprising a range of species of different functionality, and optionally a second initiator, having low functionality, i.e. a two to eight nominal functionality initiator molecule. Another aspect of the invention is a process for making the polyol. The invention is also directed to a process for producing polyurethane foam by reacting the polyol of the invention with isocyanates, and the foam produced thereby.

    摘要翻译： 由第一引发剂引发的多元醇具有平均大于8的相对高的功能，并且包含具有低官能度的两种不同官能团的范围，以及任选的第二引发剂，即2至8个标称官能度引发剂分子。 本发明的另一方面是制备多元醇的方法。 本发明还涉及通过使本发明的多元醇与异氰酸酯反应生产聚氨酯泡沫的方法，以及由此产生的泡沫。