Carbamate process
    2.
    发明授权
    Carbamate process 失效
    氨基甲酸酯工艺

    公开(公告)号:US4321402A

    公开(公告)日:1982-03-23

    申请号:US179065

    申请日:1980-08-18

    CPC分类号: C07C271/06

    摘要: In the process of producing an aromatic polyisocyanate from a methylated benzene compound having the sequential steps of ammoxidation, hydrolysis, conversion of amide to carbamate, condensation and conversion of polycarbamate ester to polyisocyanate, the improvement of converting said amide to said carbamate in a one-step reaction wherein said amide is reacted with an N-halogenating agent in the presence of alcohol and in a reaction medium having a pH of from neutral to basic and a temperature greater than 40.degree. C.

    摘要翻译: 在由具有氨氧化,水解,酰胺转化为氨基甲酸酯的顺序步骤的甲基化苯化合物制备芳族多异氰酸酯的方法中,聚氨酯酸酯与多异氰酸酯的缩合和转化,改进了将所述酰胺转化为所述氨基甲酸酯, 其中所述酰胺在醇的存在下和在pH为中性至碱性且温度大于40℃的反应介质中与N-卤化剂反应。

    Modified zeolite catalyst composition for alkylating toluene with
methanol to form styrene
    3.
    发明授权
    Modified zeolite catalyst composition for alkylating toluene with methanol to form styrene 失效
    用甲醇烷基化甲苯以形成苯乙烯的改性沸石催化剂组合物

    公开(公告)号:US4483936A

    公开(公告)日:1984-11-20

    申请号:US487585

    申请日:1983-04-22

    IPC分类号: B01J29/14 B01J29/16 C07C2/86

    摘要: A modified zeolite catalyst composition and process for using the catalyst composition to alkylate toluene (or derivative thereof) with methanol to form e.g. styrene and ethylbenzene (or derivatives thereof) is disclosed. The catalyst composition is exemplified by a type X- or Y-zeolite modified with (1) at least one alkali metal selected from Cs, K, and Rb; (2) at least one metal selected from Mn, Fe, Cu, and Zn; and (3) boron and/or phosphorus.

    摘要翻译: 一种改性沸石催化剂组合物和使用该催化剂组合物使甲苯(或其衍生物)与甲醇烷基化以形成例如甲醇的方法。 公开了苯乙烯和乙苯(或其衍生物)。 催化剂组合物的例子是用(1)至少一种选自Cs,K和Rb的碱金属改性的X型或Y型沸石; (2)选自Mn,Fe,Cu和Zn中的至少一种金属; 和(3)硼和/或磷。

    Modified zeolite catalyst composition and process for alkylating toluene
with methanol to form styrene
    4.
    发明授权
    Modified zeolite catalyst composition and process for alkylating toluene with methanol to form styrene 失效
    改性沸石催化剂组合物和用甲醇烷基化甲苯以形成苯乙烯的方法

    公开(公告)号:US4499317A

    公开(公告)日:1985-02-12

    申请号:US627339

    申请日:1984-07-02

    摘要: A modified zeolite catalyst composition and process for using the catalyst composition to alkylate toluene (or derivative thereof) with methanol to form e.g. styrene and ethylbenzene (or derivatives thereof) is disclosed. The catalyst composition is exemplified by a type X- or Y-zeolite modified with (1) at least one alkali metal selected from Cs, K, and Rb; (2) at least one metal selected from Mn, Fe, Cu, and Zn; and (3) boron and/or phosphorus.

    摘要翻译: 一种改性沸石催化剂组合物和使用该催化剂组合物使甲苯(或其衍生物)与甲醇烷基化以形成例如甲醇的方法。 公开了苯乙烯和乙苯(或其衍生物)。 催化剂组合物的例子是用(1)至少一种选自Cs,K和Rb的碱金属改性的X型或Y型沸石; (2)选自Mn,Fe,Cu和Zn中的至少一种金属; 和(3)硼和/或磷。

    Production of isocyanates from esters of aromatic carbamic acids
(urethanes)
    5.
    发明授权
    Production of isocyanates from esters of aromatic carbamic acids (urethanes) 失效
    由芳族氨基甲酸酯(氨基甲酸酯)生产异氰酸酯

    公开(公告)号:US4487713A

    公开(公告)日:1984-12-11

    申请号:US343584

    申请日:1982-01-28

    申请人: Ralph J. Spohn

    发明人: Ralph J. Spohn

    IPC分类号: C07C263/04 C07C118/00

    CPC分类号: C07C263/04 C07C263/20

    摘要: A process for converting aromatic carbamates to their corresponding isocyanates by thermolysis at a pressure of at least atmospheric in the presence of a catalyst selected from Ti, Sn, Sb, and Zr is disclosed.

    摘要翻译: 公开了一种在选自Ti,Sn,Sb和Zr的催化剂存在下,在至少大气压下通过热分解将芳族氨基甲酸酯转化为相应的异氰酸酯的方法。

    Dual demetalling of oxo products with catalyst recycle
    6.
    发明授权
    Dual demetalling of oxo products with catalyst recycle 失效
    催化剂再循环的双重脱氧产物

    公开(公告)号:US4255279A

    公开(公告)日:1981-03-10

    申请号:US59474

    申请日:1979-07-20

    摘要: This invention relates to a process for dual demetalling of an oxo product contaminated with cobalt-containing catalyst residues and recovering catalytically active cobalt carbonyls which comprises treating the oxo product in a first zone with an aqueous solution of a cobalt salt of an organic or inorganic acid to extract cobalt carbonyl partially from the oxo product into the aqueous phase containing Co.sup.++ ions to form Co[Co(CO).sub.4 ].sub.2 therein and in a second zone substantially completing the demetalling of the thus treated oxo product by treatment with an aqueous organic or inorganic acid in the presence of air or oxygen to form a Co.sup.++ salt and using the resulting aqueous solution as feed to the first zone; subjecting the aqueous phase obtained from the first zone to preforming in a high pressure preformer under synthesis gas to convert any excess or residual Co.sup.++ salt contained in said aqueous phase to Co[Co(CO).sub.4 ].sub.2 and extracting cobalt carbonyls from the aqueous phase with an organic solvent, the organic solvent extract being recycled to the oxo reactors as catalyst.

    摘要翻译: 本发明涉及用含钴催化剂残余物污染的氧代产物的双重脱金属的方法,并回收催化活性的羰基钴,其包括用有机或无机酸的钴盐的水溶液处理第一区中的羰基产物 将羰基羰基部分地从羰基产物中提取到含有Co ++离子的水相中以在其中形成Co [Co(CO)4] 2,并且在第二区域中,通过用有机水溶液处理基本上完成如此处理的羰基产物的脱金属, 无机酸在空气或氧气存在下形成Co ++盐,并使用所得水溶液作为第一区的进料; 使由第一区获得的水相在合成气中在高压预成型机中预成型,以将所述水相中所含的任何过量或残留的Co ++盐转化为Co [Co(CO)4] 2,并从水相中提取羰基钴 使用有机溶剂,将有机溶剂萃取物作为催化剂再循环到羰基反应器中。