Catalyst for the selective hydrogenation of diolefinic hydrocarbons
    1.
    发明授权
    Catalyst for the selective hydrogenation of diolefinic hydrocarbons 失效
    用于二烯烃选择性氢化的催化剂

    公开(公告)号:US4695560A

    公开(公告)日:1987-09-22

    申请号:US945139

    申请日:1986-12-22

    摘要: A composition is presented for a catalyst useful in the selective hydrogenation of unconjugated diolefinic hydrocarbons to monoolefinic hydrocarbons. The catalyst comprises nickel and sulfur deposited on the surface of an alumina support. The preferred catalyst does not contain halogens, noble metals, alkaline earth metals, or alkali metals and is characterized by having only a very low percentage of the total pore volume being provided by pores having an average pore diameter less than 150 angstroms. The great majority of the pore volume is present in the form of macropores having diameters of 500 to 1500 angstroms.

    摘要翻译: 介绍了一种可用于将非共轭二烯烃选择氢化成单烯烃的催化剂组合物。 催化剂包含沉积在氧化铝载体表面上的镍和硫。 优选的催化剂不含有卤素,贵金属,碱土金属或碱金属,其特征在于,具有通过平均孔径小于150埃的孔提供的总孔体积百分比非常低。 孔体积的绝大部分以直径为500至1500埃的大孔的形式存在。

    Urea-modified isocyanurates and method of making rigid foams thereof
    3.
    发明授权
    Urea-modified isocyanurates and method of making rigid foams thereof 失效
    尿素改性异氰脲酸酯及其硬质泡沫体的制造方法

    公开(公告)号:US5223551A

    公开(公告)日:1993-06-29

    申请号:US813559

    申请日:1991-12-26

    IPC分类号: C08G18/32

    摘要: Rigid urea-modified polyisocyanurate foams with improved dimensional stability and flame retardancy have densities of 1-12 p.c.f., a limiting oxygen index greater than 22 and dimensional changes at 100% R.H. and 70.degree. C. of less than 2% in any linear dimension and a method of making same. The method comprises reacting an organic polyisocyanate, a blowing agent and an N,N'-dialkyl aromatic diamine in the presence of a trimerization catalyst and, if water is used as the blowing agent, a blowing catalyst, wherein the N,N'-dialkyl aromatic diamine and an amine produced by water, if used, constitute the sole sources of active hydrogen.

    摘要翻译: 具有改进的尺寸稳定性和阻燃性的刚性脲改性聚异氰脲酸酯泡沫具有1-12pcf的密度,大于22的极限氧指数和在100%RH和70℃下的尺寸变化在任何线性尺寸上小于2% 一种制作方法。 该方法包括在三聚催化剂存在下使有机多异氰酸酯,发泡剂和N,N'-二烷基芳族二胺反应,如果使用水作为发泡剂,则发泡催化剂,其中N, 二烷基芳族二胺和由水生成的胺(如果使用的话)构成活性氢的唯一来源。

    Process for preparation of the pharmaceutically desired (S)-oxetine
enantiomers
    4.
    发明授权
    Process for preparation of the pharmaceutically desired (S)-oxetine enantiomers 失效
    制备药学上需要的(S) - 吗啉对映异构体的方法

    公开(公告)号:US6162949A

    公开(公告)日:2000-12-19

    申请号:US255300

    申请日:1999-02-22

    申请人: Mark J. Gattuso

    发明人: Mark J. Gattuso

    摘要: Improved processes for preparation of the (S)-oxetines in high enantiomeric purity centers on resolution using simulated moving bed chromatography of a racemic precursor early in the oxetine synthesis. Resolution is effected with high enantiomeric purity, and subsequent reactions of the desired enantiomer performed with high optical specificity to maintain enantiomeric purity. The undesired enantiomer may be racemized and recycled to the resolution phase to avoid loss.

    摘要翻译: 用于制备高对映异构体纯度的(S) - 氧化亚胺的改进方法主要取决于在氧杂环丁烷合成中早期使用外消旋前体的模拟移动床层析。 以高对映异构体纯度实现分辨率,并且所需对映异构体的后续反应以高光学特异性进行以维持对映体纯度。 不需要的对映异构体可以外消旋化并再循环至分辨相以避免损失。

    Catalyst for the selective hydrogenation of polyunsaturated organics
    6.
    发明授权
    Catalyst for the selective hydrogenation of polyunsaturated organics 失效
    用于多不饱和有机物选择性氢化的催化剂

    公开(公告)号:US4734540A

    公开(公告)日:1988-03-29

    申请号:US71456

    申请日:1987-07-09

    摘要: A process is presented which is useful for the selective hydrogenation of polyunsaturated organic compounds. The resultant product of such a reaction produces the monoolefinic equivalents of the hydrogenated polyunsaturated organic compounds. The catalyst used in this selective hydrogenation process comprises nickel and sulfur deposited on the surface of an alumina support. The preferred catalyst does not contain halogens, noble metals, alkaline earth metals, or alkali metals and is characterized by having only a very low percentage of the total pore volume being provided by pores having an average pore diameter less than 150 angstroms. The great majority of the pore volume is present in the form of macropores having diameters of 500 to 1500 angstroms.

    摘要翻译: 提出了一种可用于多不饱和有机化合物的选择性氢化的方法。 所得的这种反应产物产生氢化的多不饱和有机化合物的单烯烃当量。 在该选择性氢化方法中使用的催化剂包括沉积在氧化铝载体表面上的镍和硫。 优选的催化剂不含有卤素,贵金属,碱土金属或碱金属,其特征在于,具有通过平均孔径小于150埃的孔提供的总孔体积百分比非常低。 孔体积的绝大部分以直径为500至1500埃的大孔的形式存在。

    Process for preparation of pharmaceutically desired enantiomers
    7.
    发明授权
    Process for preparation of pharmaceutically desired enantiomers 失效
    制备药学上需要的对映异构体的方法

    公开(公告)号:US06458955B1

    公开(公告)日:2002-10-01

    申请号:US09705304

    申请日:2000-11-03

    申请人: Mark J. Gattuso

    发明人: Mark J. Gattuso

    IPC分类号: C07C21310

    摘要: Improved processes for preparation of high enantiomeric purity compounds center on resolution using simulated moving bed chromatography of a racemic precursor early in the synthesis. Resolution is effected with high enantiomeric purity, and subsequent reactions of the desired enantiomer performed with high optical specificity to maintain enantiomeric purity. The undesired enantiomer is racemized and recycled to the resolution phase to avoid loss.

    摘要翻译: 制备高对映异构体纯度化合物的改进方法以合成前期的外消旋前体的模拟移动床层析为核心。 以高对映异构体纯度实现分辨率,并且所需对映异构体的后续反应以高光学特异性进行以维持对映体纯度。 将不需要的对映异构体外消旋化并再循环至分解相以避免损失。

    Urea-modified isocyanurates
    9.
    发明授权
    Urea-modified isocyanurates 失效
    脲改性的异氰脲酸酯

    公开(公告)号:US5288768A

    公开(公告)日:1994-02-22

    申请号:US994016

    申请日:1992-12-21

    IPC分类号: C08G18/32

    摘要: Rigid urea-modified polyisocyanurate foams with improved dimensional stability and flame retardancy have densities of 0.5-20 p.c.f., a limiting oxygen index greater than 22 and dimensional changes at 100% R.H. and 70.degree. C. of less than 2% in any linear dimension and a method of making same. The method comprises reacting an organic polyisocyanate, a blowing agent and an N,N'-dialkyl aromatic diamine in the presence of a trimerization catalyst and, if water is used as the blowing agent, a blowing catalyst, wherein the N,N'-dialkyl aromatic diamine and an amine produced by water, if used, constitute the sole sources of active hydrogen.

    摘要翻译: 具有改进的尺寸稳定性和阻燃性的刚性尿素改性的聚异氰脲酸酯泡沫体具有0.5-20pf的密度,大于22的极限氧指数和在100%RH和70℃下的尺寸变化,在任何线性尺度上小于2% 一种制作方法。 该方法包括在三聚催化剂存在下使有机多异氰酸酯,发泡剂和N,N'-二烷基芳族二胺反应,如果使用水作为发泡剂,则发泡催化剂,其中N, 二烷基芳族二胺和由水生成的胺(如果使用的话)构成活性氢的唯一来源。