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    Polyhydroxyalkane/aromatic diamine chain extenders
    41.
    发明授权
    Polyhydroxyalkane/aromatic diamine chain extenders 失效
    聚羟基烷烃/芳族二胺增链剂

    公开(公告)号：US4786656A

    公开(公告)日：1988-11-22

    申请号：US158836

    申请日：1988-02-22

    申请人： J. Kenneth Presswood ,  James H. Simon ,  Christopher J. Nalepa

    发明人： J. Kenneth Presswood ,  James H. Simon ,  Christopher J. Nalepa

    IPC分类号： C08G18/10 ,  C08G18/32

    CPC分类号： C08G18/10

    摘要： Blends of 90-99 mol % of a polyhydroxyalkane containing 2-6 carbons and 2-3 hydroxyl groups and 1-10 mol % of an aromatic diamine having a pKb value greater than 11.3 are useful as chain extenders for polyurethanes derived from diphenylmethanediisocyanate (MDI) prepolymers. Their use overcomes the sensitivity to stoichiometry common to MDI prepolymer/polyhydroxyalkane systems and leads to the formation of cast elastomers having better green strength and a shorter demold time. The preferred blends are blends of 1,4-butanediol and di(alkylthio)toluenediamines.

    Preparation of alkanediols
    43.
    发明授权
    Preparation of alkanediols 失效
    烷二醇的制备

    公开(公告)号：US4475004A

    公开(公告)日：1984-10-02

    申请号：US564087

    申请日：1983-12-21

    申请人： Christopher J. Nalepa

    发明人： Christopher J. Nalepa

    IPC分类号： C07C29/10 ,  C07C31/20 ,  C07C29/132 ,  C07C33/26 ,  C07C59/245 ,  C07C67/00

    CPC分类号： C07C31/20 ,  C07C29/172

    摘要： Disclosed is an improved process for producing alkanediols by the hydrolytic reduction of hydrolytically reducible furans. The improvement comprises utilizing a supported nickel catalyst, and trihaloacetic acid, preferably trifluoracetic acid or trichloroacetic acid or a mixture thereof as a promoter for the hydrolytic reduction. The hydrolytic reduction is conducted in an aqueous medium at elevated temperatures and elevated pressures.

    摘要翻译： 公开了通过水解还原呋喃的水解还原制备烷二醇的改进方法。 该改进包括使用负载的镍催化剂和三卤代乙酸，优选三氟乙酸或三氯乙酸或其混合物作为水解还原的促进剂。 水解还原在水介质中在升高的温度和升高的压力下进行。

    Concentrated aqueous bromine solutions and their preparation
    48.
    发明授权
    Concentrated aqueous bromine solutions and their preparation 有权
    浓缩溴水溶液及其制备

    公开(公告)号：US07195782B2

    公开(公告)日：2007-03-27

    申请号：US10269901

    申请日：2002-10-10

    申请人： Robert M. Moore ,  Christopher J. Nalepa

    发明人： Robert M. Moore ,  Christopher J. Nalepa

    IPC分类号： A01N59/02 ,  A61K33/14

    CPC分类号： C02F1/766 ,  A01N59/00 ,  C02F2303/04 ,  A01N2300/00

    摘要： Described is a process of producing a concentrated liquid biocide formulation. Mixed together are (a) bromine chloride or bromine and (b) an aqueous solution of alkali metal salt of sulfamic acid having a pH of at least about 7, in amounts such that (i) the active bromine content of the solution is at least about 100,000 ppm (wt/wt), and (ii) the atom ratio of nitrogen to active bromine from (a) and (b) is greater than 1 when bromine is used and is greater than 0.93 when bromine chloride is used. Use of bromine chloride as the source of the active bromine in the process is preferred because in the resulting aqueous compositions, all of the bromine of the bromine chloride is made available as active bromine in solution. In other words, the chlorine of the bromine chloride is converted in the process to dissolved alkali metal chloride salt, thereby liberating all of the bromine in the biocidal composition as active bromine capable of providing biocidal activity.

    摘要翻译： 描述了生产浓缩液体杀生物剂制剂的方法。 混合在一起是（a）溴化氯或溴，和（b）具有至少约7的pH的氨基磺酸的碱金属盐的水溶液，其量使得（i）溶液的活性溴含量至少为 大约100,000ppm（wt / wt），和（ii）当使用溴时，（a）和（b）的氮与活性溴的原子比大于1，并且当使用溴氯化物时大于0.93。 在该方法中使用溴氯化物作为活性溴的来源是优选的，因为在所得含水组合物中溴溴化物的溴全部作为活性溴在溶液中得到。 换句话说，溴化氯的氯在该过程中转化为溶解的碱金属氯化物盐，从而释放杀生物组合物中的全部溴作为能够提供杀生物活性的活性溴。