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    Removal of lactams from a medium which contains concentrated sulphuric acid or sulphur trioxide
    1.
    发明授权
    Removal of lactams from a medium which contains concentrated sulphuric acid or sulphur trioxide 失效
    从含有浓硫酸或三氧化硫的介质中除去纤维素

    公开(公告)号：US3801566A

    公开(公告)日：1974-04-02

    申请号：US3801566D

    申请日：1971-06-15

    Applicant: STAMICARBON

    Inventor： ELMENDORP J ,  DE ROOIJ A

    IPC: C07D201/16 ,  C07D41/06

    CPC classification number: C07D201/16

    Abstract: A PROCESS FOR RECOVERING E-CAPROLATAM FRO SOLUTIONS OF E-CAPROLACTAM AND SULPHURIC ACID AND SO3 IS DISCLOSED WHEREIN AMMONIUM DIHYDROGEN PHOSPHATE OR ALKALI METAL DIHYDROGEN PHOSPHATE IS ADDED TO THE LACTAM, SULPHURIC ACID SOLUTION AND THE SOLUTION THEN SUBJECTED TO EXTRACTION BY A SUBSTANTIALLY WATER IMMISCIBLE SOLVENT FOR THE LACTAM WHEREBY THE LACTAM IS EXTRACTED FROM THE SULPHURIC ACID SOLUTION AND THE LACTAM FREE SULPHURIC ACID SOLUTION CAN BE USED TO PROCESS ROCK PHOSPHATE TO GYPSUM AND PHOSPHORIC ACID AND THE PHOSPHORIC ACID BEING CONVERTED TO AMMONIUM OR ALKALI METAL DIHYDROGEN PHOSPHATE TO BE USED IN TREATING FURTHER SOLUTIONS OF LACTAM AND SULPHURIC ACID.

    Process for the preparation of oximes
    2.
    发明授权
    Process for the preparation of oximes 失效
    制备氧化物的方法

    公开(公告)号：US3729304A

    公开(公告)日：1973-04-24

    申请号：US3729304D

    申请日：1971-06-15

    Applicant: STAMICARBON

    Inventor： ELMENDORP J ,  DE ROOIJ A

    IPC: C05B7/00 ,  C05B11/04

    CPC classification number: C05B7/00

    Abstract: A process for synthesizing an oxime by reacting an organic carbonyl compound with a hydroxylammonium sulfate and ammonium hydrogen sulfate in the presence of ammonium dihydrogen phosphate whereby an aqueous solution of phosphoric acid and ammonium sulfate is obtained after separating the oxime product therefrom. The phosphoric acid, ammonium sulfate solution can be used in processing rock phosphate with the aid of nitric acid to product a fertilizer composition having a N to P2O5 ratio of approximately 1:1.

    Abstract translation: 在磷酸二氢铵存在下使有机羰基化合物与羟基硫酸铵和硫酸氢铵反应合成肟的方法，由此在分离出肟产物后得到磷酸和硫酸铵的水溶液。 磷酸，硫酸铵溶液可用硝酸处理岩石磷酸盐，产生N = P2O5比约为1:1的肥料组合物。

    5.
    发明专利
    未知

    公开(公告)号：BR7405226D0

    公开(公告)日：1975-01-21

    申请号：BR522674

    申请日：1974-06-26

    Applicant: STAMICARBON

    Inventor： DE ROOIJ A ,  ELMENDORP J

    IPC: C01C1/24 ,  C01C1/242 ,  C05C3/00 ,  C07D201/16 ,  C07D41/06

    Abstract: epsilon -CAPROLACTAM IS RECOVERED FROM A Beckmann rearrangement mixture of the lactam and aqueous sulfuric acid by simultaneously neutralizing the rearrangement mixture with ammonia at a pressure of 1-5 atmospheres and crystallizing out ammonium sulfate, the heat liberated by the neutralization reaction is removed from the system by evaporating a portion of the water from the solution. At the conditions employed hydrolysis of the lactam is substantially reduced if not entirely avoided.

    POSTUPAK CIKLICNI ZA PROIZVODNJU I PRERADU RASTVORA HIDROKSILAMONIJUMOVE SOLI
    10.
    发明专利
    POSTUPAK CIKLICNI ZA PROIZVODNJU I PRERADU RASTVORA HIDROKSILAMONIJUMOVE SOLI 未知

    公开(公告)号：YU282269A

    公开(公告)日：1975-12-31

    申请号：YU282269

    申请日：1969-11-11

    Applicant: STAMICARBON

    Inventor： DE ROOIJ A ,  ELMENDORP J

    IPC: C01B21/02 ,  C01B21/14 ,  C01B21/26 ,  C07C85/10

    Abstract: 1287302 Oximes STAMICARBON NV 11 Nov 1969 [12 Nov 1968] 55238/69 Heading C2C In a continuous process for the production of an oxime in which an aqueous reaction medium is recycled between a hydroxylamine saltforming zone in which nitrate ions are catalytically reduced with molecular hydrogen and an oxime formation zone in which hydroxylamine salt is reacted with a ketone or an aldehyde, the nitrate ions in the said aqueous reaction medium are replenished by absorption of nitrous gases, i.e. a mixture of NO 2 and NO therein to form nitric acid. The preparation is described of cyclohexanone oxime, referring to Figs. 1-3 (not shown).

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