Preparation of 3-hydroxytetrahydrofuran
    2.
    发明授权
    Preparation of 3-hydroxytetrahydrofuran 失效
    3-羟基四氢呋喃的制备

    公开(公告)号:US4539415A

    公开(公告)日:1985-09-03

    申请号:US587163

    申请日:1984-03-07

    IPC分类号: C07D307/20

    CPC分类号: C07D307/20

    摘要: A process for the preparation of 3-hydroxytetrahydrofuran by catalytic dehydration of butane-1,2,4-triol, in which a catalyst chosen from the group of the bleaching earths is used and the dehydration is carried out in the presence of not less than 3 moles of water per mole of butane-1,2,4-triol.

    摘要翻译: 通过丁烷-1,2,4-三醇的催化脱水制备3-羟基四氢呋喃的方法,其中使用选自漂白土组的催化剂,并且在不少于 每摩尔丁烷-1,2,4-三醇3摩尔水。

    Preparation of catalysts for the hydrogenation of acetylene-alcohols
    4.
    发明授权
    Preparation of catalysts for the hydrogenation of acetylene-alcohols 失效
    乙炔醇氢化催化剂的制备

    公开(公告)号:US4287099A

    公开(公告)日:1981-09-01

    申请号:US143486

    申请日:1980-04-24

    CPC分类号: B01J23/8898 C07C29/172

    摘要: A process for the preparation of a hydrogenation catalyst which contains the oxides of the metals nickel, copper, molybdenum and aluminum and/or iron, and may or may not contain manganese oxide, by precipitating a solution of salts of the metals with an alkali metal carbonate at from 35.degree. to 95.degree. C. and a pH of from 5 to 9 and heating the precipitate at from 350.degree. to 700.degree. C., the amount of the metal salts being selected so that the catalyst contains from 5 to 70 percent by weight of aluminum oxide and/or iron oxide, the remainder being principally nickel oxide and, based on nickel oxide, from 20 to 40 percent by weight of copper oxide, from 0.5 to 6 percent by weight of molybdenum oxide and from 0 to 10 percent by weight of manganese oxide.

    摘要翻译: 制备含有金属镍,铜,钼和铝和/或铁的氧化物的氢化催化剂的方法,并且可以或可以不含氧化锰,通过用碱金属沉淀金属盐溶液 35至95℃的碳酸盐和5至9的pH,并在350℃至700℃下加热沉淀物,选择金属盐的量使催化剂含有5-70% 的氧化铝和/或氧化铁,其余部分主要是氧化镍,以氧化镍为基准,为氧化铜为20〜40重量%,氧化钼为0.5〜6重量%,氧化钼为0〜10 重量百分比的氧化锰。

    Enhanced expression of fusion polypeptides with a biotinylation tag
    5.
    发明申请
    Enhanced expression of fusion polypeptides with a biotinylation tag 审中-公开
    用生物素标记增强融合多肽的表达

    公开(公告)号:US20060046285A1

    公开(公告)日:2006-03-02

    申请号:US11211339

    申请日:2005-08-25

    IPC分类号: C12P21/04 C12N9/10 C07H21/04

    CPC分类号: C07K1/1077 C07K2319/00

    摘要: The invention provides the means to enhance in E. coli-based expression systems the formation of fusion polypeptides containing as an N-terminal tag a biotinylation polypeptide. By way of specifically exchanging in the nucleic acid sequence encoding the biotinylation polypeptide nucleotides at 11 discrete positions enhances the formation of the total fusion polypeptide by at least 40%.

    摘要翻译: 本发明提供了在基于大肠杆菌的表达系统中增强含有作为N-末端标签的融合多肽生物素化多肽的方法。 通过在11个离散位置上特异性交换编码生物素化多肽核苷酸的核酸序列增强总融合多肽的形成至少40%。

    Breaking down aromatic compounds in industrial wastewaters
    6.
    发明授权
    Breaking down aromatic compounds in industrial wastewaters 有权
    打破工业废水中的芳香族化合物

    公开(公告)号:US06258281B1

    公开(公告)日:2001-07-10

    申请号:US09336722

    申请日:1999-06-21

    IPC分类号: C02F178

    CPC分类号: C02F1/78 Y10S210/909

    摘要: A process for breaking down aromatics in industrial wastewaters that contain small amounts of aromatics by reaction with an ozone-containing oxygen stream at a temperature of from 40 to 70° C. and at a pH of from 4 to 7, involves treating industrial wastewaters that contain small amounts of aromatics in two stages with an oxygen stream that contains from 5 to 8% by volume of ozone with thorough mixing by causing the wastewater to flow upward through two reaction zones, the overflow of the wastewater at the top of the first reaction zone entering the second reaction zone at the base, the purified wastewater being obtained at the top of the second reaction zone, the ozone-containing oxygen stream first entering at the base of the second reaction zone, and the waste gas obtained at the top of the second reactor being introduced at the base of the first reaction zone, and, furthermore, a gas containing less than 0.2% by volume of ozone being obtained at the top of the first reaction zone.

    摘要翻译: 在-40〜70℃,pH4〜7的温度下,通过与含臭氧的氧气流反应而含有少量芳族化合物的工业废水中的芳族化合物的分解方法涉及处理工业废水, 在两个阶段中含有少量芳烃,其中含有5-8%(体积)臭氧的氧气,通过使废水通过两个反应区向上流动而充分混合,第一反应顶部的废水溢出 进入第二反应区的第二反应区的第二反应区的第二反应区的净化废水,在第二反应区的顶部得到的纯化废水,首先进入第二反应区的碱的含臭氧的氧流, 第二反应器被引入第一反应区的底部,此外,在第一反应区的顶部获得含有小于0.2体积%的臭氧的气体。

    Control of ABS threshold without accompanying reduction of brake pressure
    7.
    发明授权
    Control of ABS threshold without accompanying reduction of brake pressure 失效
    控制ABS阈值,同时降低制动压力

    公开(公告)号:US5249850A

    公开(公告)日:1993-10-05

    申请号:US791735

    申请日:1991-09-30

    CPC分类号: B60T8/173

    摘要: In a method of controlling the brake pressure of a vehicle brake system equipped with anti-lock protection it is provided to measure the slip and/or rotational retardation of a wheel whose brake is applied and to compare each measured value with a given threshold value so as to lower the brake pressure if the threshold value proves to have been surpassed. Undesired pressure reductions can be avoided by increasing the threshold value for given periods of time from a basic value (S.sub.G) and subsequently decreasing it again. At a point in time T.sub.1 at which the rotational retardation of the braked wheel is greater than a value corresponding to a physically feasible slowdown of the vehicle the threshold value is increased abruptly, to be decreased thereafter according to a predetermined function of time. During the lowering of the threshold value the change in speed of the retarded wheel is measured over given intervals of time .DELTA.T and compared with the instantaneous higher threshold value. If the comparison demonstrates that the change in speed in question is greater than the instantaneous raise in threshold value, the threshold value is reduced to the basic value (S.sub. G).

    摘要翻译: 在控制具有防抱死保护的车辆制动系统的制动压力的方法中,提供了用于测量施加制动器的车轮的滑移和/或旋转延迟并将每个测量值与给定阈值进行比较的方法 如果阈值被证明已被超越,则降低制动压力。 通过从基本值(SG)增加给定时间段的阈值并随后再次减少,可以避免不期望的压力降低。 在制动轮的旋转延迟大于对应于物理上可行的车辆减速的值的时间点T1,阈值突然增加,此后根据预定的时间功能而减小。 在降低阈值期间,在给定的时间间隔DELTA T上测量延迟轮的速度变化,并与瞬时更高的阈值进行比较。 如果比较表明所讨论的速度变化大于阈值瞬时提升,则阈值降低到基本值(S G)。

    Preparation of N-substituted cyclic amines
    9.
    发明授权
    Preparation of N-substituted cyclic amines 失效
    N-取代的环胺的制备

    公开(公告)号:US4910304A

    公开(公告)日:1990-03-20

    申请号:US331942

    申请日:1989-03-31

    IPC分类号: B01J23/78 C07D295/023

    摘要: N-substituted cyclic amines of the general formula I ##STR1## where A is an alkylene group or a --(CH.sub.2).sub.n --[--O--(CH.sub.2).sub.m ].sub.r group which may be monosubstituted or polysubstituted by radicals R without the radicals R in a defined compound having to be identical, R is alkyl, alkoxyalkyl, unsubstituted or alkyl-substituted or alkoxy-substituted cycloalkyl, cycloalkylalkyl, aryl or arylalkyl, n and m independently of one another are each from 2 to 8 and r is from 1 to 3, the --(CH.sub.2).sub.n --[O--(CH.sub.2).sub.m ].sub.r group consisting of from 5 to 12 members, are prepared by reacting a primary amine of the general formula IIR--NH.sub.2 (II)with a diol of the general formula IIIHO--A--OH (III)where R and A have the abovementioned meanings, and hydrogen in the presence of a copper-containing hydrogenation/dehydrogenation catalyst at elevated temperatures and under superatmospheric pressure, by a process in which the reaction is carried out in the presence of a catalytic amount of a basic alkali metal compound or alkaline earth metal compound.

    摘要翻译: 其中A是亚烷基或 - (CH 2)n - [ - O-(CH 2)m] r基团,其可以被未经取代的基团R单取代或多取代, 定义化合物中的基团R必须相同,R是烷基,烷氧基烷基,未取代的或烷基取代的或烷氧基取代的环烷基,环烷基烷基,芳基或芳基烷基,n和m彼此独立地为2-8,r为 通过使通式II R-NH 2(II)的伯胺与式(Ⅳ)所示的式(Ⅳ)化合物与 其中R和A具有上述含义的通式III HO-A-OH(III)的二醇和在含铜氢化/脱氢催化剂存在下在升高的温度和超大气压下的氢,通过其中 反应在催化量的碱金属碱金属化合物或碱性碱存在下进行 h金属化合物。