Method for production of zinc acrylate
    1.
    发明授权
    Method for production of zinc acrylate 失效
    丙烯酸锌的生产方法

    公开(公告)号:US5789616A

    公开(公告)日:1998-08-04

    申请号:US874127

    申请日:1997-06-12

    IPC分类号: C07C57/04 C07B61/00 C07C51/41

    CPC分类号: C07C51/412

    摘要: A method is provided for the production of zinc acrylate which possesses an essentially fine constitution, permits easy pulverization into a fine powder, and, when kneaded with a rubber composition, attains uniform diffusion in a state very rarely inducing fast adhesion or formation of cluster. The fine zinc acrylate powder is obtained by a method which comprises causing acrylic acid and a higher fatty acid of 12-30 carbon atoms to react with zinc oxide in an organic solvent while continuing dispersion of the zinc oxide in the organic solvent in the presence of an anionic surfactant.

    摘要翻译: 提供了一种制备具有基本上细微结构的丙烯酸锌的方法,可以容易地粉碎成细粉,并且当与橡胶组合物捏合时,在极少引起快速粘合或形成簇的状态下获得均匀的扩散。 丙烯酸锌粉末是通过使有机溶剂中的丙烯酸和12-30个碳原子的高级脂肪酸与氧化锌反应的方法得到的,同时在存在有机溶剂的情况下将氧化锌分散在有机溶剂中 阴离子表面活性剂。

    Process for separation of carbon dioxide from other gases
    2.
    发明授权
    Process for separation of carbon dioxide from other gases 失效
    二氧化碳与其他气体分离的方法

    公开(公告)号:US4741745A

    公开(公告)日:1988-05-03

    申请号:US43013

    申请日:1987-04-27

    摘要: Diisopropyl ethers of oligomers of ethylene glycol having between 2 and 8 ethylene glycol moieties and an average molecular weight between 190 and 300, are more useful physical absorption solvents for the separation of acid gases than are dimethyl, diethyl, ethyl butyl, propyl butyl, dibutyl, or higher alkyl ethers of the same ethylene glycol oligomers, because of a combination of high solution capacity, high separation efficiencies, low viscosity, low gas pressure, and resistance to hydrolysis during use. The diisopropyl ether of diethylene glycol is especially advantageous for use at absorber temperatures below 0.degree. C. Because of low viscosity, the diisopropyl ethers can often be substituted in separation equipment designed for use with chemical rather than physical solvents, thereby realizing the lower operating costs associated with physical solvents without requiring new capital investment.

    摘要翻译: 具有2至8个乙二醇部分和平均分子量在190和300之间的乙二醇低聚物的二异丙基醚比二甲基,二乙基,乙基丁基,丙基丁基,二丁基等更有用的分离酸性气体的物理吸收溶剂 ,或相应的乙二醇低聚物的高级烷基醚,因为在使用过程中组合了高溶液容量,高分离效率,低粘度,低气体压力和耐水解性。 二乙二醇的二异丙醚特别有利于在低于0℃的吸收器温度下使用。由于低粘度,二异丙醚通常可以在设计用于化学而不是物理溶剂的分离设备中进行取代,从而实现较低的操作成本 与物理溶剂相关,而不需要新的资本投资。

    Silver catalyst for production of ethylene oxide and method for
manufacture thereof
    6.
    发明授权
    Silver catalyst for production of ethylene oxide and method for manufacture thereof 失效
    用于生产环氧乙烷的银催化剂及其制造方法

    公开(公告)号:US4769358A

    公开(公告)日:1988-09-06

    申请号:US930137

    申请日:1986-11-12

    摘要: A silver catalyst having fine silver particles dispersed and deposited fast on the outer surface of a porous inorganic refractory carrier and on the inner wall surface of pores in said carrier and used in the production of ethylene oxide by the catalytic gas-phase oxidation of ethylene with molecular oxygen, which silver catalyst is characterized by containing a compound of at least one metal ion selected from the group consisting of cesium, rubidium, potassium, and thallium (monovalent) as dispersed and deposited fast in an amount in the range of 1.times.10.sup.-6 to 5.times.10.sup.-6 gram equivalent per the unit surface area, m.sup.2, of said silver on the surface of said silver.

    摘要翻译: 一种银催化剂,其具有细小的银颗粒,其分散并快速沉积在多孔无机耐火载体的外表面上,并在所述载体的孔的内壁表面上,并用于通过乙烯的催化气相氧化生产环氧乙烷, 分子氧,该银催化剂的特征在于含有选自铯,铷,钾和铊(一价)中的至少一种金属离子的化合物,其分散并快速沉积在1×10 -6 相对于所述银表面上的所述银的单位表面积m2为5×10 -6克当量。

    Method for production of aqueous dispersion of N-substituted
N',N'-alkylene urea
    7.
    发明授权
    Method for production of aqueous dispersion of N-substituted N',N'-alkylene urea 失效
    制备N-取代的N',N'-亚烷基脲的水分散体的方法

    公开(公告)号:US4696760A

    公开(公告)日:1987-09-29

    申请号:US678247

    申请日:1984-12-05

    CPC分类号: D06M13/487 C07D203/20

    摘要: A method for the production of an aqueous dispersion of a water insoluble N-substituted N',N'-alkylene urea having the general formula I: ##STR1## wherein R.sup.1 denotes alkyl having 6 to 20 carbon atoms, phenyl or ##STR2## in case of m=1, or R.sup.1 denotes alkylene having 6 to 20 carbon atoms, phenylene or ##STR3## in case of m=2, where X denotes H, CH.sub.3 or OCH.sub.3 and n is 0 or 1, R.sup.2 denotes H or CH.sub.3, R.sup.3 denotes H, CH.sub.3 or C.sub.2 H.sub.5 and R.sup.4 denotes H or CH.sub.3, by the reaction of an alkylene imine having 2 to 4 carbon atoms with an isocyanate represented by the general formula II:R-NCO (II)wherein R denotes an alkyl having 6 to 20 carbon atoms, ##STR4## wherein X and n are the same as above in the presence of at least one surface active agent selected from the group consisting of anionic surface active agents and nonionic surface active agents under vigorous stirring.

    摘要翻译: 制备具有通式I的水不溶性N-取代N',N'-亚烷基脲的水分散体的方法:其中R1表示具有6至20个碳原子的烷基,苯基或 在m = 1的情况下,或R 1表示具有6〜20个碳原子的亚烷基,在m = 2的情况下为亚苯基或者IMA图,其中X表示H,CH 3或OCH 3,n为0或1,R 2表示H 或CH3,R3表示H,CH3或C2H5,R4表示H或CH3,通过具有2至4个碳原子的亚烷基亚胺与由通式II表示的异氰酸酯反应:R-NCO(II)其中R表示 在有剧烈搅拌下,在至少一种选自阴离子表面活性剂和非离子表面活性剂的表面活性剂的存在下,X和n与上述相同。