Process for leaching of precious metals
    1.
    发明授权
    Process for leaching of precious metals 失效
    贵金属浸出工艺

    公开(公告)号:US5336474A

    公开(公告)日:1994-08-09

    申请号:US956317

    申请日:1992-10-06

    IPC分类号: C22B11/08 B01D11/00

    CPC分类号: C22B11/08

    摘要: A process is disclosed for the leaching of gold and silver from ores and ore concentrates through intimate contact of the ore or ore concentrate with an aqueous leach solution containing cyanide. The leach solution has a pH of 8 to 13. The leaching process takes place in the presence of an oxygen-releasing peroxo compound. The separation of the formed cyano complexes of gold and silver takes place in a known manner. During leaching, at least one peroxoborate compound is present, in an effective quantity, as the peroxo compound. The peroxoborate is preferably a sodium or calcium peroxoborate. Compared to previously known leaching techniques in the presence of hydrogen peroxide or calcium peroxide, the leaching process according to the present invention provides a higher and/or faster precious metal yield and/or minimizes the consumption of cyanide and/or oxidizing agent.

    摘要翻译: 公开了通过矿石或矿石浓缩物与含氰化物的含水浸出溶液的紧密接触从矿石和精矿中浸出金和银的方法。 浸出溶液的pH值为8-13。浸出过程发生在释放氧的过氧化合物的存在下。 形成的金和银的氰基络合物的分离以已知的方式进行。 在浸出过程中,至少有一种过氧化硼化合物作为过氧化合物以有效的量存在。 过氧硼酸盐优选为过氧硼酸钠或钙。 与先前已知的在过氧化氢或过氧化钙存在下的浸提技术相比,根据本发明的浸出方法提供了更高和/或更快的贵金属产率和/或使氰化物和/或氧化剂的消耗最小化。

    Manufacture of .alpha.-haloethylcarbamyl halides
    2.
    发明授权
    Manufacture of .alpha.-haloethylcarbamyl halides 失效
    制造α-卤乙基氨基甲酰卤

    公开(公告)号:US4189446A

    公开(公告)日:1980-02-19

    申请号:US921174

    申请日:1978-07-03

    IPC分类号: C07C20060101 C07C51/58

    CPC分类号: C07C1/00 C07C51/58

    摘要: Novel .alpha.-haloethylcarbamyl halides and a process for their manufacture by reacting vinyl isocyanate with a hydrogen halide.The .alpha.-haloethylcarbamyl halides, especially .alpha.-chloroethylcarbamyl chloride, prepared by the process of the invention, are valuable starting materials for the manufacture of surface-coating raw materials, textile coatings, dyes, drugs and crop protection agents.

    摘要翻译: 新的α-卤乙基氨基甲酰基卤化物及其通过使异氰酸乙烯酯与卤化氢反应制备的方法。 通过本发明的方法制备的α-卤乙基氨基甲酰基卤化物,特别是α-氯乙基氨基甲酰氯,是用于制造表面涂层原料,纺织品涂料,染料,药物和作物保护剂的有价值的原料。

    Preparation of mixtures of 1-monohalogenated isocyanates and
1,2-unsaturated isocyanates
    7.
    发明授权
    Preparation of mixtures of 1-monohalogenated isocyanates and 1,2-unsaturated isocyanates 失效
    1-卤代异氰酸酯和1,2-不饱和异氰酸酯的混合物的制备

    公开(公告)号:US4314948A

    公开(公告)日:1982-02-09

    申请号:US175592

    申请日:1980-08-05

    CPC分类号: C07C263/16

    摘要: 1-Monohalogenated isocyanates, and a process for the preparation of mixtures of 1-monohalogenated isocyanates and 1,2-unsaturated isocyanates by reacting 1-monohalogenated carbamic acid halides or isocyanates with a halogen-free isocyanate or diisocyanate or by reacting 1,2-unsaturated isocyanates with a carbamic acid halide or a bis-carbamic acid halide.The 1,2-unsaturated isocyanates and 1-monohalogenated isocyanates prepared according to the invention are valuable starting materials for the preparation of pest control agents, dyes, drugs, water-repellent textile finishes, detergents, plastics, bleaches and adhesives.

    摘要翻译: 1-单卤代异氰酸酯,以及1-卤代异氰酸酯和1,2-不饱和异氰酸酯的混合物的制备方法,通过使1-单卤代氨基甲酸卤化物或异氰酸酯与无卤素的异氰酸酯或二异氰酸酯反应, 不饱和异氰酸酯与氨基甲酸卤化物或双 - 氨基甲酸卤化物。 根据本发明制备的1,2-不饱和异氰酸酯和1-单卤素异氰酸酯是制备害虫控制剂,染料,药物,拒水织物整理剂,洗涤剂,塑料,漂白剂和粘合剂的有价值的起始材料。

    Aroylureas
    8.
    发明授权
    Aroylureas 失效
    芳香油

    公开(公告)号:US4271171A

    公开(公告)日:1981-06-02

    申请号:US146091

    申请日:1980-05-02

    摘要: Aroylureas of the formula ##STR1## where A denotes a phenyl, thienyl or pyridyl-3 radical which is mono- or polysubstituted by halogen, linear or branched alkyl of 1 to 4 carbon atoms, or linear or branched alkoxy of 1 to 4 carbon atoms, R denotes linear or branched alkyl of 1 to 4 carbon atoms or linear or branched alkoxy of 1 to 4 carbon atoms, and n denotes one of the integers 0,1 and 2, which have an insecticidal and acarididal action, and a process for combating insects and mites with these active ingredients.

    摘要翻译: 其中A表示被卤素,1至4个碳原子的直链或支链烷基或1至4个碳原子的直链或支链烷氧基单取代或多取代的苯基,噻吩基或吡啶基-3基团的芳酰胺 R表示1〜4个碳原子的直链或支链烷基或1〜4个碳原子的直链或支链烷氧基,n表示具有杀虫和抗螨作用的整数0,1和2之一, 用这些活性成分对抗昆虫和螨虫。

    Preparation of 2,2-dimethyl-4-cyano-butyraldoxime N-methyl-carbamate
    9.
    发明授权
    Preparation of 2,2-dimethyl-4-cyano-butyraldoxime N-methyl-carbamate 失效
    制备2,2-二甲基-4-氰基 - 丁酰肟-N-甲基 - 氨基甲酸酯

    公开(公告)号:US4267121A

    公开(公告)日:1981-05-12

    申请号:US73993

    申请日:1979-09-10

    CPC分类号: A01N47/24

    摘要: A process for the preparation of 2,2-dimethyl-4-cyano-butyraldoxime N-methyl-carbamate wherein 2,2-dimethyl-4-cyano-butyraldoxime is reacted with an at least equimolar amount of methylcarbamic acid chloride in the form of a concentrated solution of at least 8 moles thereof per liter of inert organic solvent, in the presence of from 1.05 to 2 moles of a tertiary aliphatic amine per mole of 2,2-dimethyl-4-cyano-butyraldoxime, at from 0.degree. to 30.degree. C.

    摘要翻译: 一种制备2,2-二甲基-4-氰基 - 丁酰醛肟N-甲基 - 氨基甲酸酯的方法,其中2,2-二甲基-4-氰基 - 丁酰肟与至少等摩尔量的甲基氨基甲酰氯以 在每摩尔2,2-二甲基-4-氰基 - 丁酰醛肟存在1.05至2摩尔叔脂族胺存在下,每升惰性有机溶剂至少8摩尔浓缩溶液,在0至 30℃