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25 条记录 (耗时 0.009 秒)

    Preparation of ketones
    2.
    发明授权
    Preparation of ketones 失效
    酮的制备

    公开(公告)号：US3865881A

    公开(公告)日：1975-02-11

    申请号：US23699772

    申请日：1972-03-22

    申请人： UNION CARBIDE CORP

    发明人： MCMULLEN CHARLES H

    IPC分类号： C07C45/00 ,  C07C49/06

    CPC分类号： C07C45/00

    摘要： A process for the preparation of liquid ketones which comprises coupling a saturated aldehyde, e.g., acetaldehyde, with an alphaolefin, e.g., ethylene, in the presence of an organic hydroperoxide initiator and a metal-containing compound as the catalyst therefor, e.g., cobalt(II) acetylacetonate. The novel process results in good productivities and high initiator efficiencies.

    摘要翻译： 一种制备液体酮的方法，其包括在有机氢过氧化物引发剂和含金属化合物作为催化剂的存在下将饱和醛如乙醛与α-烯烃（例如乙烯）偶联，例如， 乙酰丙酮钴（II）。 该新方法具有良好的生产能力和较高的引发剂效率。

    Organic peroxides
    3.
    发明授权
    Organic peroxides 失效
    有机过氧化物

    公开(公告)号：US3796757A

    公开(公告)日：1974-03-12

    申请号：US3796757D

    申请日：1971-05-04

    申请人： REICHHOLD CHEMICALS INC

    发明人： YUN GER CHANG

    IPC分类号： C07C409/38 ,  C08F4/32 ,  C07C49/06

    CPC分类号： C07C409/38 ,  C07C2601/14 ,  C07C2602/08 ,  C07C2602/10 ,  C08F4/32

    摘要： THIS INVENTION DISCLOSES A PROCESS OF MAKING AN ORGANIC BETA-KETO PERESTER. ACCORDINGLY, 2,2,4-TRIMETHYL-3-HYDROXY-3-PENTEONOIC ACID BETA LACTONE IS REACTED WITH AN ORGANIC HYDROPEROXIDE AT A TEMPERATURE RANGING FROM ABOUT -10*C. TO ABOUT 80*C. IN THE PRESENCE OF AN ACIDIC OR A BASIC CATALYST. THE MOLE RATIO O THE REACTANTS CAN VARY FROM ABOUT 1:10 TO ABOUT 10:1.

    Distillation process for recovery of methyl isobutyl ketone
    9.
    发明授权
    Distillation process for recovery of methyl isobutyl ketone 失效
    回收甲基异丁基酮的蒸馏工艺

    公开(公告)号：US4163696A

    公开(公告)日：1979-08-07

    申请号：US913530

    申请日：1978-06-07

    申请人： Wang-Mo Wong

    发明人： Wang-Mo Wong

    IPC分类号： C07C7/06 ,  C07C45/84 ,  B01D3/36 ,  C07C49/06

    CPC分类号： C07C7/06 ,  C07C45/84

    摘要： There is disclosed an azeotropic distillation process for separating toluene from methyl isobutyl ketone (MIBK) in a spent liquor mixture. A toluene azeotrope former, preferably methanol, is added to the liquor in an amount sufficient to form an azeotrope with all of the toluene present in the mixture. The methanol is added in an amount of at least about 2.62, typically an excess amount of about 3.4 to about 6.3 parts by weight of methanol per 1.0 part by weight of toluene. The resulting azeotrope of methanol and toluene is then separated by distillation from the MIBK. The methanol may be subsequently recovered from the toluene by extraction with water. Other toluene azeotrope formers may be utilized.

    摘要翻译： 公开了一种在废液混合物中从甲基异丁基酮（MIBK）中分离甲苯的共沸蒸馏方法。 将甲苯共沸物（优选甲醇）以足以与混合物中存在的所有甲苯形成共沸物的量加入到液体中。 相对于每1.0重量份的甲苯，甲醇的加入量至少约为2.62，通常为约3.4至约6.3重量份的甲醇。 然后通过蒸馏从MIBK中分离得到的甲醇和甲苯的共沸物。 甲醇可以随后通过用水萃取而从甲苯中回收。 可以使用其它甲苯共沸混合物。

    Process for the production of methyl ketones
    10.
    发明授权
    Process for the production of methyl ketones 失效
    生产甲基酮的方法

    公开(公告)号：US3890390A

    公开(公告)日：1975-06-17

    申请号：US26230872

    申请日：1972-06-13

    申请人： UNION CARBIDE CORP

    发明人： APRAHAMIAN NAZAR S

    IPC分类号： C07C45/69 ,  C07C49/04 ,  C07C49/76 ,  C07C49/06

    CPC分类号： C07C45/69 ,  C07C49/04

    摘要： A non-catalytic vapor phase process for the production of methyl ketones having the following structural formula:

    WHEREIN R1, R2, R3 and R4 are hydrogen, a straight or branched chain alkyl radical having 1 to 8 carbon atoms wherein the total number of carbon atoms in all of said alkyl radicals is no greater than 12 carbon atoms, a phenyl radical, or a phenyl radical wherein 1 to 3 hydrogen atoms are substituted by a straight or branched chain alkyl radical having 1 to 3 carbon atoms, and wherein there are no more than 2 phenyl radicals, comprising admixing acetone with an olefin having the following structural formula:

    摘要翻译： 用于生产具有以下结构式的甲基酮的非催化气相方法：