Preparation of acetaldehyde
    1.
    发明授权
    Preparation of acetaldehyde 失效
    乙醛的制备

    公开(公告)号:US4302611A

    公开(公告)日:1981-11-24

    申请号:US187691

    申请日:1980-09-16

    IPC分类号: C07C27/00 C07C45/49 C07C47/06

    CPC分类号: C07C45/49

    摘要: Acetaldehyde is prepared by reacting methyl acetate and/or dimethyl ether with carbon monoxide and hydrogen in the presence of a palladium catalyst and an iodine moiety in a reaction zone wherein the reaction mixture is in a continuous boiling state.

    摘要翻译: 在反应混合物处于连续沸腾状态的反应区中,在钯催化剂和碘部分的存在下,使乙酸甲酯和/或二甲醚与一氧化碳和氢气反应制备乙醛。

    Separation of tars from carbonylation reaction mixtures
    2.
    发明授权
    Separation of tars from carbonylation reaction mixtures 失效
    从羰基化反应混合物中分离焦油

    公开(公告)号:US4476237A

    公开(公告)日:1984-10-09

    申请号:US267960

    申请日:1981-05-28

    摘要: Tarry residues often are formed in carbonylation reactions, such as those in which esters or ethers are carbonylated to produce ethylidene diacetate or carboxylic acid anhydrides, such as acetic anhydride. Such residues contain Group VIII noble metal catalysts, typically rhodium, which must be separated before the residues can be disposed of. In the process of the invention, a portion of the carbonylation reaction mixture is flashed to a lower pressure and the resulting residues-containing liquid is extracted with solvents which preferentially remove the tars. The tars are separated from the solvents and disposed of while the solvents are recycled for further use. The catalyst-containing liquid is processed to remove residual solvent and returned to the carbonylation reaction.

    摘要翻译: 在羰基化反应中常常形成塔里木渣,例如其中酯或醚被羰基化以产生亚乙基二乙酸酯或羧酸酐如乙酸酐的那些。 这样的残留物含有VIII族贵金属催化剂,通常是铑,必须在残留物被处理之前分离。 在本发明的方法中,将羰基化反应混合物的一部分闪蒸至较低的压力,并将所得含残留液体用优先除去焦油的溶剂萃取。 将这些焦油与溶剂分离并处理,同时将溶剂再循环使用。 处理含催化剂的液体以除去残余溶剂并返回羰基化反应。

    Composition for inhibiting corrosion of titanium
    4.
    发明授权
    Composition for inhibiting corrosion of titanium 失效
    用于抑制钛腐蚀的组合物

    公开(公告)号:US4238551A

    公开(公告)日:1980-12-09

    申请号:US17756

    申请日:1979-03-05

    IPC分类号: C23C30/00 C23F13/00 B32B15/00

    摘要: A process is provided for inhibiting the rate of corrosion of titanium metal surfaces from attack by strong acid media in which at least a portion of the titanium metal surface is coated with rhodium metal to provide a treated metal surface which is substantially impervious to corrosion by strong acid media. The article so prepared appears to be uniquely impervious to corrosion by strong acid media and is also claimed herein.

    摘要翻译: 提供了一种用于抑制钛金属表面的腐蚀速度被强酸介质侵蚀的方法,其中至少一部分钛金属表面被铑金属涂覆以提供经过处理的金属表面,该表面基本上不受腐蚀强烈 酸性介质。 如此制备的制品似乎对强酸性介质的腐蚀是独一无二的,并且也在此要求保护。

    Electrokinetic delivery of medicaments
    5.
    发明申请

    公开(公告)号:US20060052739A1

    公开(公告)日:2006-03-09

    申请号:US11265383

    申请日:2005-11-03

    IPC分类号: A61N1/30

    摘要: An electrokinetic delivery or diagnostic device for personal use and self-administration of a medicament to a treatment site is provided. The device includes a housing containing a power supply, a first active electrode and a ground tactile electrode. An applicator includes a pad for containing medicament for overlying the first electrode of the device. The medicament may be applied by the user to the pad, contained within the pad or contained in rupturable capsules within the pad, together with a hydrogel if necessary for imparting electrical conductivity whereby, upon application of the applicator to the treatment site, the medicament is electrokinetically transported into the treatment site. In another form, the applicator is self-contained, having a power supply, a first electrode overlying a pad and a ground electrode from the opposite side from the pad whereby the individual presses the pad against the treatment site to complete the electrical circuit and electrokinetically drive the medicament into the treatment site.

    Process for inhibiting titanium corrosion
    7.
    发明授权
    Process for inhibiting titanium corrosion 失效
    抑制钛腐蚀的方法

    公开(公告)号:US4330376A

    公开(公告)日:1982-05-18

    申请号:US169534

    申请日:1980-07-17

    IPC分类号: C23C30/00 C23F13/00 C25D3/50

    CPC分类号: C25D3/50 C23C30/00 C23F13/005

    摘要: A process is provided for inhibiting the rate of corrosion of titanium metal surfaces from attack by strong acid media in which at least a portion of the titanium metal surface is coated with rhodium metal to provide a treated metal surface which is substantially impervious to corrosion by strong acid media. The article so prepared appears to be uniquely impervious to corrosion by strong acid media and is also claimed herein.

    摘要翻译: 提供了一种用于抑制钛金属表面的腐蚀速度被强酸介质侵蚀的方法,其中至少一部分钛金属表面被铑金属涂覆以提供经过处理的金属表面,该表面基本上不受腐蚀强烈 酸性介质。 如此制备的制品似乎对强酸性介质的腐蚀是独一无二的,并且也在此要求保护。

    Carbonylation with Group VIII noble metal catalysts
    8.
    发明授权
    Carbonylation with Group VIII noble metal catalysts 失效
    用VIII族贵金属催化剂羰基化

    公开(公告)号:US4252741A

    公开(公告)日:1981-02-24

    申请号:US949344

    申请日:1978-10-06

    CPC分类号: C07C51/56

    摘要: In the carbonylation of alkyl esters in the presence of a Group VIII noble metal catalyst to produce a reaction mixture comprising volatile components and the non-volatile Group VIII noble metal catalyst, and the volatile components are separated from the catalyst, catalyst activity is maintained by providing a partial pressure of hydrogen of at least 10 psi during the separation of the volatile products. A partial pressure of at least 15 psi of carbon monoxide is also preferably provided, particularly when a metal promoter for the Group VIII noble metal catalyst is present, during such separation.

    摘要翻译: 在VIII族贵金属催化剂存在下羰基化烷基酯以产生包含挥发性组分和非挥发性VIII族贵金属催化剂的反应混合物,并将挥发性组分与催化剂分离,催化剂活性由 在分离挥发性产物期间提供至少10psi的氢的分压。 还优选提供至少15psi的一氧化碳的分压,特别是在这种分离期间,存在第VIII族贵金属催化剂的金属助催化剂。