Continuous preparation of cyclohexanone oxime
    181.
    发明授权
    Continuous preparation of cyclohexanone oxime 失效
    CYCLOHEXANONE OXIME连续制备

    公开(公告)号:US3862230A

    公开(公告)日:1975-01-21

    申请号:US42271273

    申请日:1973-12-07

    Applicant: STAMICARBON

    Abstract: A process for the continuous preparation of an oxime from cyclohexanone and an aqueous buffered solution of a hydroxylammonium salt together with free phosphoric acid, phosphates, nitrates, and optionally sulphates all in controlled amounts and without the use of an organic solvent is disclosed. The resulting aqueous reaction mixture contains a manageable amount of unreacted cyclohexanone which is subsequently recovered and recirculated.

    Abstract translation: 公开了一种从环己酮和羟基铵盐连续制备肟的方法以及游离磷酸,磷酸盐,硝酸盐和任选的硫酸盐,其全部以受控量和不使用有机溶剂。 所得的含水反应混合物含有可处理量的未反应的环己酮,随后回收并再循环。

    Process for the recovery of pure epsilon-caprolactam
    182.
    发明授权
    Process for the recovery of pure epsilon-caprolactam 失效
    恢复纯EPSILON-CAPROLACTAM的方法

    公开(公告)号:US3850910A

    公开(公告)日:1974-11-26

    申请号:US30172672

    申请日:1972-10-30

    Applicant: STAMICARBON

    Inventor: GOETTSCH R VOS H

    CPC classification number: C07D201/04 C07D201/16

    Abstract: 1. IN A PROCESS FOR THE RECOVERY PURE E-CAPROLACTAM CONTAINING LESS THAN 5 MEQ. OF IONOGENIC SUBSTANCES PER KG. OF LACTAM, OBTAINED BY INTRAMOLECULAR CONVERSION OF CYCLOHEXANONE OXIME WITH THE AID OF AN ACID CATALYST FROM THE GROUP CONSISTING OF SULFURIC ACID, OLEUM AND SULPHUR TRIOXIDE, AND EXTRACTION OF THE REACTION MIXTURE AFTER DILUTION WITH WATER AND, OPTIONALLY AFTER PARTIAL NEUTRALIZATION OF THE SULPHURIC ACID, WITH A WATER-IMMISCIBLE ORGANIC SOLVENT FOR THE LACTAM, THE IMPROVEMENT COMPRISING NEUTRALIZING THE RESULTING SOLVENT OF LACTAM IN THE ORGANIC SOLVENT WITH AQUEOUS AMMONIA TO A PH OF AT LEAST 4.5 (MEASURED AT 20* C.), THEREBY FORMING AN EMULSION OF AN AQUEOUS 15-40% WT. AMMONIUM SULPHATE SOLUTION EMULSIFIED IN THE ORGANIC SOLVENT, WASHING THE EMULSION WITH A COUNTERFLOW OF DEMINERALIZED WATER IN A WEIGHT RATIO OF 4-20 PARTS THEREBY REESTRACTING THE LACTAM FROM THE ORGANIC SOLVENT TO PRODUCE AN ECAPROLACTAM SOLUTION WITH LESS THAN 5 MEQ. OF IONOGENIC SUBSTANCES PER KG. OF LACTAM, WHILE THE RESULTING AQUEOUS LACTAM SOLUTION IS EVAPORATED, OPTIONALLY AFTER HAVING BEEN FREED OF ORGANIC IONGENIC COMPOUNDS ON CATION AND ANION EXCHANGERS.

    Process for the preparation of a dialkyl magnesium compound
    185.
    发明授权
    Process for the preparation of a dialkyl magnesium compound 失效
    二氯硅烷化合物的制备方法

    公开(公告)号:US3737393A

    公开(公告)日:1973-06-05

    申请号:US3737393D

    申请日:1970-06-03

    Applicant: STAMICARBON

    Inventor: DE VRIES M

    CPC classification number: C07F3/02

    Abstract: A PROCESS FOR PREPARING SOLUTIONS OF DIALKYL MAGNESIUM COMPOUNDS IS DISCLOSED, WHEREIN AN ALKYL HALOGENIDE IS REACTED WITH MAGNESIUM, AND THE REACTION PRODUCT IS CONTACTED WITH AN ORGANO-ALUMINUM COMPOUND DURING AND/OR AFTER THE REACTION TO FORM A SOLUTION DIALKY MAGNESIUM AND ALUMINUM COMPOUND. SUCH SOLUTIONS ARE USEFUL IN THE POLYMERIZATION OF A-ALKYLENES, SUCH AS ETHYLENE, FOR INSTANCE.

    Process for the preparation of 5- vinylnorbornene-2
    186.
    发明授权
    Process for the preparation of 5- vinylnorbornene-2 失效
    制备5-乙烯基壬烯-2的方法

    公开(公告)号:US3728406A

    公开(公告)日:1973-04-17

    申请号:US3728406D

    申请日:1971-12-07

    Applicant: STAMICARBON

    Abstract: A process for preparing 5-vinyl norbornene-2 is disclosed, wherein butadiene is reacted with cyclopentadiene and/or dicyclopentadiene, with the reaction discontinued when no more than 50 mole percent of the (di)cyclopentadiene is converted. The process produces high efficiencies of converted raw materials into 5-vinyl norbornene-2. 5-vinyl norbornene-2 is a known compound having known use, such as, e.g., as a monomer suitable for polymerization with ehtylene and propylene into rubbery polymers.

    Abstract translation: 公开了一种制备5-乙烯基降冰片烯-2的方法,其中丁二烯与环戊二烯和/或二环戊二烯反应,当不超过50摩尔%的(二)环戊二烯转化时,反应停止。 该方法将转化的原料的高效率转化为5-乙烯基降冰片烯-2。 5-乙烯基降冰片烯-2是具有已知用途的已知化合物,例如作为适用于与乙烯和丙烯聚合成橡胶状聚合物的单体。

    Diphenylolpropane prills
    187.
    发明授权
    Diphenylolpropane prills 失效
    二苯基丙烯酸酯

    公开(公告)号:US3719715A

    公开(公告)日:1973-03-06

    申请号:US3719715D

    申请日:1970-01-08

    Applicant: STAMICARBON

    Inventor: HOOGENDONK J

    CPC classification number: C07C39/16

    Abstract: An improved solid form of diphenylolpropane is disclosed consisting of substantially dust-free, strong prillshaving reduced electrostatic characteristics and improved free flowing characteristics.

    Integrated process for the preparation of urea and melamine
    188.
    发明授权
    Integrated process for the preparation of urea and melamine 失效
    用于制备尿素和梅拉米的综合方法

    公开(公告)号:US3697521A

    公开(公告)日:1972-10-10

    申请号:US3697521D

    申请日:1970-12-15

    Applicant: STAMICARBON

    CPC classification number: C07C273/12 Y02P20/125

    Abstract: An integrated process for the preparation of urea and melamine is described wherein heat requirements for the decomposition of ammonium carbamate contained in the urea product solution, which is cycled as feed to the melamine synthesis stage, is supplied, at least in part, from the heat released by the desublimation of the melamine vapors obtained in the melamine synthesis gas product stream, by bringing this gas stream into direct contact, either in counter-current or co-current flow, with the ammonium carbamate-containing urea product solution.

    Abstract translation: 描述了一种用于制备尿素和三聚氰胺的综合方法,其中包含在作为进料至三聚氰胺合成阶段的尿素产物溶液中的氨基甲酸铵分解的热需求至少部分地从热量 通过在三聚氰胺合成气产物流中获得的三聚氰胺蒸汽的释放,通过使该气流以逆流或并流流动与含氨基甲酸铵的尿素产物溶液直接接触释放。

    Process for preparing unsaturated alcohols
    190.
    发明授权
    Process for preparing unsaturated alcohols 失效
    制备不饱和醇的方法

    公开(公告)号:US3686333A

    公开(公告)日:1972-08-22

    申请号:US3686333D

    申请日:1968-08-30

    Applicant: STAMICARBON

    CPC classification number: C07C29/141 C07C33/03

    Abstract: A process for preparing unsaturated alcohols from the corresponding unsaturated aldehydes with the aid of hydrogen at elevated temperature and pressure and in the liquid phase is disclosed, wherein a catalyst which is dissolved in the liquid phase is utilized. The catalyst contains a cadmium salt and at least one salt of a transition metal from the groups 3b, 4b, 5b and 6b of the Periodic System. The catalyst system is highly selective and the selectivity is retained.

    Abstract translation: 公开了一种在升高的温度和压力以及在液相中借助于氢气从相应的不饱和醛制备不饱和醇的方法,其中使用溶解在液相中的催化剂。 催化剂含有镉盐和至少一种来自周期系的组3b,4b,5b和6b的过渡金属盐。 催化剂体系是高度选择性的,并且保留了选择性。

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