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    1.
    发明专利
    未知

    公开(公告)号：DE69011758T2

    公开(公告)日：1995-03-02

    申请号：DE69011758

    申请日：1990-06-13

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： TSUMURA RYUICHIRO ,  IKEDA KEIICHI ,  MURAISHI TERUO ,  WANG JIN-KAI

    IPC: C07D207/44 ,  C07D207/448 ,  C07D207/452 ,  C07D207/444

    Abstract: A process for the preparation of N-substituted maleimides by conducting heat-dehydration and dehydrating imidization of N-substituted maleamic acids under azeotropic distillation of generated water in a solvent mixture containing a solvent capable of forming water azeotrope and an organic aprotic polar solvent, in the presence as catalyst of metallic tin, tin oxide, a tin salt of a maleamic acid or a tin compound which forms a tin salt of the N-substituted maleamic acid in the reaction system. E.G. N-phenylmaleamic acid (produced in situ from aniline and maleic anyhydride) in xylene and dimethylformamide is converted to N-phenylmaleimide using as a catalyst stannous oxide (0.025 mole per mole of maleic anhydride).

    2.
    发明专利
    未知

    公开(公告)号：DE69011758D1

    公开(公告)日：1994-09-29

    申请号：DE69011758

    申请日：1990-06-13

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： TSUMURA RYUICHIRO ,  IKEDA KEIICHI ,  MURAISHI TERUO ,  WANG JIN-KAI

    IPC: C07D207/44 ,  C07D207/448 ,  C07D207/452 ,  C07D207/444

    Abstract: A process for the preparation of N-substituted maleimides by conducting heat-dehydration and dehydrating imidization of N-substituted maleamic acids under azeotropic distillation of generated water in a solvent mixture containing a solvent capable of forming water azeotrope and an organic aprotic polar solvent, in the presence as catalyst of metallic tin, tin oxide, a tin salt of a maleamic acid or a tin compound which forms a tin salt of the N-substituted maleamic acid in the reaction system. E.G. N-phenylmaleamic acid (produced in situ from aniline and maleic anyhydride) in xylene and dimethylformamide is converted to N-phenylmaleimide using as a catalyst stannous oxide (0.025 mole per mole of maleic anhydride).

    PRODUCION SILANES
    3.
    发明专利
    PRODUCION SILANES 未知

    公开(公告)号：AU6200486A

    公开(公告)日：1987-03-05

    申请号：AU6200486

    申请日：1986-08-27

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： ITOH MASAYOSHI ,  MIYAGAWA HIROHARU ,  MURAKAMI MASAMI ,  ABE TOMOHIRO ,  INOUE KAORU ,  IKEDA KEIICHI

    IPC: C01B33/04 ,  C01B6/00 ,  C01B6/06 ,  C01B25/06

    Abstract: A process for producing silanes represented by the general formula Si n H 2n + 2 wherein n is 1 or 2, which comprises (a) preparing a silicon-magnesium alloy containing at least one element selected from the group consisting of Li, Na, K, Ca, Ba, Ti, Zr, Nb, Cr, Mo, Mn, Fe, Co, Ni, Pd, Cu, Ag, Zn, Cd, Al, Sn, Pb, Bi, Se, S and C as a third component element; (b) reacting the alloy containing the third component element with an acid in an ammonia solvent; and (c) thus, varying the ratio of Si 2 H 6 formed to SiH 4 formed.A process for producing mixtures of hydrides of a first element, which hydrides are producible by treating an alloy or compound of the element and magnesium with an acid in an ammonia solvent, wherein the alloy or compound also contains at least one further element selected from the group consisting of Li, Na, K, Ca, Ba, Ti, Zr, Nb, Cr, Mo, Mn, Fe, Co, Ni, Pd, Cu, Ag, Zn, Cd, Al, Sn, Pb, Bi, Se, S and C as a third component in an amount which influences the composition of the hydride mixture.

    6.
    发明专利
    未知

    公开(公告)号：DE3671204D1

    公开(公告)日：1990-06-21

    申请号：DE3671204

    申请日：1986-09-02

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： ITOH MASAYOSHI ,  MIYAGAWA HIROHARU ,  MURAKAMI MASAMI ,  ABE TOMOHIRO ,  INOUE KAORU ,  IKEDA KEIICHI

    IPC: C01B33/04 ,  C01B6/00 ,  C01B6/06 ,  C01B25/06

    Abstract: A process for producing silanes represented by the general formula Si n H 2n + 2 wherein n is 1 or 2, which comprises (a) preparing a silicon-magnesium alloy containing at least one element selected from the group consisting of Li, Na, K, Ca, Ba, Ti, Zr, Nb, Cr, Mo, Mn, Fe, Co, Ni, Pd, Cu, Ag, Zn, Cd, Al, Sn, Pb, Bi, Se, S and C as a third component element; (b) reacting the alloy containing the third component element with an acid in an ammonia solvent; and (c) thus, varying the ratio of Si 2 H 6 formed to SiH 4 formed.A process for producing mixtures of hydrides of a first element, which hydrides are producible by treating an alloy or compound of the element and magnesium with an acid in an ammonia solvent, wherein the alloy or compound also contains at least one further element selected from the group consisting of Li, Na, K, Ca, Ba, Ti, Zr, Nb, Cr, Mo, Mn, Fe, Co, Ni, Pd, Cu, Ag, Zn, Cd, Al, Sn, Pb, Bi, Se, S and C as a third component in an amount which influences the composition of the hydride mixture.

    PRODUCING SILANES
    7.
    发明专利
    PRODUCING SILANES 未知

    公开(公告)号：AU585641B2

    公开(公告)日：1989-06-22

    申请号：AU6200486

    申请日：1986-08-27

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： ITOH MASAYOSHI ,  MIYAGAWA HIROHARU ,  MURAKAMI MASAMI ,  ABE TOMOHIRO ,  INOUE KAORU ,  IKEDA KEIICHI

    IPC: C01B33/04 ,  C01B6/00 ,  C01B6/06 ,  C01B25/06

    Abstract: A process for producing silanes represented by the general formula Si n H 2n + 2 wherein n is 1 or 2, which comprises (a) preparing a silicon-magnesium alloy containing at least one element selected from the group consisting of Li, Na, K, Ca, Ba, Ti, Zr, Nb, Cr, Mo, Mn, Fe, Co, Ni, Pd, Cu, Ag, Zn, Cd, Al, Sn, Pb, Bi, Se, S and C as a third component element; (b) reacting the alloy containing the third component element with an acid in an ammonia solvent; and (c) thus, varying the ratio of Si 2 H 6 formed to SiH 4 formed.A process for producing mixtures of hydrides of a first element, which hydrides are producible by treating an alloy or compound of the element and magnesium with an acid in an ammonia solvent, wherein the alloy or compound also contains at least one further element selected from the group consisting of Li, Na, K, Ca, Ba, Ti, Zr, Nb, Cr, Mo, Mn, Fe, Co, Ni, Pd, Cu, Ag, Zn, Cd, Al, Sn, Pb, Bi, Se, S and C as a third component in an amount which influences the composition of the hydride mixture.

    PRODUCTION OF METHYLAMINES
    8.
    发明专利
    PRODUCTION OF METHYLAMINES 失效

    公开(公告)号：JPH09249619A

    公开(公告)日：1997-09-22

    申请号：JP5488096

    申请日：1996-03-12

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： KIYOURA TADAMITSU ,  AOKI SHINOBU ,  IKEDA KEIICHI ,  MATSUI KAZUAKI ,  TOKUMOTO SHUICHI ,  INOUE KAORU

    IPC: B01J29/08 ,  C07B61/00 ,  C07C209/16 ,  C07C211/04

    Abstract: PROBLEM TO BE SOLVED: To stably obtain dimethylamine and monomethylamine while suppressing reduction in catalytic performances and subduing formation of trimethylamine even in a case in which a methanol admixed with formaldehyde, etc., is used as a raw material. SOLUTION: Methanol is reacted with ammonia in the presence of hydrogen and a metal zeolite obtained by replacing a zeolite as a catalyst with an ion of a metal having reducing ability such as copper, silver, gold or nickel to give the objective methylamine. Preferably unreacted methanol recovered from the reaction mixture is used as a part of methanol. In the reaction, the content of formaldehyde is

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