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53 条记录 (耗时 0.018 秒)

    Cement composition
    1.
    发明授权
    Cement composition 失效
    水泥组成

    公开(公告)号：US5413634A

    公开(公告)日：1995-05-09

    申请号：US238566

    申请日：1994-05-05

    申请人： Edward T. Shawl ,  Haven S. Kesling, Jr.

    发明人： Edward T. Shawl ,  Haven S. Kesling, Jr.

    IPC分类号： C04B24/02 ,  C04B24/08 ,  C04B24/10 ,  C04B24/32 ,  C04B28/02 ,  C04B103/60

    CPC分类号： C04B24/023 ,  C04B24/10 ,  C04B24/32 ,  C04B28/02 ,  C04B2111/34

    摘要： The invention relates to a cement composition containing a shrinkage reducing amount of an alkyl ether derivative of an aliphatic polyhydroxy compound of the formula:Q--[(A).sub.n --OR].sub.xwherein Q is a C.sub.3 -C.sub.12 aliphatic hydrocarbon group, R is hydrogen or C.sub.1 -C.sub.10 alkyl, at least one R being the C.sub.1 -C.sub.10 alkyl group, A is C.sub.2 -C.sub.4 oxyalkylene, n is 0-10, and x is 3-5.

    摘要翻译： 本发明涉及含有减缩量的下式的脂肪族多羟基化合物的烷基醚衍生物的水泥组合物：Q- [（A）n -OR] x其中Q是C 3 -C 12脂族烃基，R是 氢或C1-C10烷基，至少一个R为C1-C10烷基，A为C2-C4氧化烯，n为0-10，x为3-5。

    Process for the preparation of methylene diphenylene diisocyanates and polymethylene polyphenylene poly (diisocyanates)
    7.
    发明授权
    Process for the preparation of methylene diphenylene diisocyanates and polymethylene polyphenylene poly (diisocyanates) 失效
    亚甲基二亚苯基二异氰酸酯和聚亚甲基聚亚苯基聚（二异氰酸酯）的制备方法

    公开(公告)号：US4873364A

    公开(公告)日：1989-10-10

    申请号：US283430

    申请日：1988-12-09

    申请人： Edward T. Shawl ,  Haven S. Kesling, Jr.

    发明人： Edward T. Shawl ,  Haven S. Kesling, Jr.

    IPC分类号： C07C263/06

    CPC分类号： C07C263/06

    摘要： An improved process is provided for the preparation of methylene diphenylene diisocyanates (MDI) and polymethylene polyphenylene poly (diisocyanates) by the thermal decomposition of a methylene diphenylene bis (dialkylurea) or a polymethylene polyphenylene poly (dialkylurea) in a solvent in the presence of a tertiary amine hydrohalide, such as pyridine hydrochloride, as a promoter for conversion of the urea groups to the corresponding isocyanate.

    摘要翻译： 提供了一种通过亚甲基二亚苯基双（二烷基脲）或多亚甲基聚亚苯基聚（二烷基脲）在溶剂中在存在下进行热分解制备亚甲基二亚苯基二异氰酸酯（MDI）和多亚甲基聚亚苯基聚（二异氰酸酯）的改进方法 叔胺氢卤化物，例如吡啶盐酸盐，作为将脲基团转化成相应的异氰酸酯的促进剂。

    Preparation of unsaturated monester precursor for pelargonic acid
    10.
    发明授权
    Preparation of unsaturated monester precursor for pelargonic acid 失效
    壬酸不饱和单酯前体的制备

    公开(公告)号：US4318860A

    公开(公告)日：1982-03-09

    申请号：US209625

    申请日：1980-11-24

    申请人： Chao-Yang Hsu ,  Haven S. Kesling, Jr.

    发明人： Chao-Yang Hsu ,  Haven S. Kesling, Jr.

    IPC分类号： C07C69/587 ,  C07C15/00

    CPC分类号： C07C69/587

    摘要： A process for producing unsaturated methyl nonadienoate and methyl nonatrienoate monesters useful as precursors for pelargonic acid which comprises contacting, in a reaction inert medium, butadiene and methyl-2,4-pentadienoate in a molar ratio of 2:1 to 10:1 at a temperature of 40.degree. to 120.degree. C. under an inert atmosphere and in the presence of a catalytic amount of a homogeneous palladium (II) complex of the formula ##STR1## wherein R is alkyl, chloroalkyl, bromoalkyl or fluoroalkyl having from 1 to 6 carbon atoms or aryl having 6 to 12 carbon atoms; Q is phosphorous or arsenic and R' is alkyl, aminoalkyl or alkoxy having 1 to 6 carbon atoms or aryl or aryloxy having 6 to 12 carbon atoms.The foregoing precursors may subsequently be hydrogenated to methyl pelargonate (methyl nonanoate) and pelargonic acid may then be obtained by acid-catalyzed hydrolysis of methyl pelargonate.

    摘要翻译： 可用作壬酸的前体的不饱和甲基非二烯酸甲酯和壬二酸甲酯单体的方法，该方法包括在反应惰性介质中使丁二烯和2,4-二戊烯酸甲酯以摩尔比2:1至10:1的比例在 温度为40-120℃，在惰性气氛下，在催化量的式（Ⅰ）的均匀钯（Ⅱ）络合物存在下，其中R是具有1至6个碳原子的烷基，氯代烷基，溴代烷基或氟代烷基 碳原子或具有6至12个碳原子的芳基; Q是磷或砷，R'是烷基，氨基烷基或具有1至6个碳原子的烷氧基或具有6至12个碳原子的芳基或芳氧基。 随后可将上述前体氢化成壬酸甲酯（壬酸甲酯），然后通过酸催化水解甲基壬酸酯获得壬酸。