公开(公告)号：US3728353A

公开(公告)日：1973-04-17

申请号：US3728353D

申请日：1970-07-10

Applicant: STAMICARBON

Inventor： STIJFS P ,  GROEN S ,  DEUMENS J

IPC: C07D295/02 ,  C07D295/027 ,  C07D29/06

CPC classification number: C07D295/027

Abstract: A process for the preparation of a carbon-substituted piperidine by the hydrogenation of a N-substituted gamma -cyanoketoimine in the presence of a hydrogenation catalyst, is disclosed. A primary amine having the same substituent as the nitrogen atom of the starting gamma -cyanoketoimine is receovered in high yield from the reaction mixture. The carbon substituted piperidines thus produced are useful as starting materials for the production of herbicides or pharmaceuticals.

Abstract translation: 公开了在氢化催化剂存在下通过氢化N-取代的γ-氰基酮亚胺制备碳取代的哌啶的方法。 具有与起始γ-氰基酮亚胺的氮原子相同的取代基的伯胺以高产率从反应混合物中回收。 如此制备的碳取代的哌啶可用作生产除草剂或药物的原料。

公开(公告)号：US3723069A

公开(公告)日：1973-03-27

申请号：US3723069D

申请日：1971-02-24

Applicant: STAMICARBON

Inventor： VAN KOPPEN C

IPC: B01D11/04 ,  B06B1/20 ,  F15B21/12 ,  B01F3/08

CPC classification number: B06B1/20 ,  B01D11/0438 ,  B01D11/0488 ,  F15B21/12

Abstract: For controlling the amplitude of pulsations of liquid in a column partly filled with the liquid and having a pulsing chamber which communicates with a gas cushion alternately compressed and expanded at a constant amplitude and frequency comprising: increasing and decreasing the amount of gas in the gas cushion. In the installation according to the invention the space behind the piston in the cylinder is connected with a buffer space, the volume of which is at least as large as that of the gas cushion, while the spaces in front of and behind the piston in the cylinder are connected by means providing a restricted communication.

Abstract translation: 用于控制部分填充有液体的塔中的液体的脉动振幅，并具有与气垫连通的脉冲室，其以恒定的振幅和频率交替地压缩和膨胀，包括：增加和减少气垫中的气体量 。 在根据本发明的装置中，气缸中的活塞后面的空间与缓冲空间连接，该缓冲空间的体积至少与气垫的大小相同，而活塞的前后空间 气缸通过提供有限通信的方式连接。

公开(公告)号：US3720548A

公开(公告)日：1973-03-13

申请号：US3720548D

申请日：1971-04-01

Applicant: STAMICARBON

Inventor： BARAKE F ,  DIJKHUIS C ,  LOGEMANN J

IPC: C07C273/04 ,  C23C8/02 ,  C23C8/14 ,  C23C22/68 ,  C23F9/02 ,  C23F7/04

CPC classification number: C23C22/68 ,  B01J19/02 ,  C07C273/04 ,  C23C8/02 ,  C23C8/14

Abstract: A process is described for enhancing the corrosion resistance of austenitic stainless steels which are exposed to solutions containing ammonium carbamate. The process involves exposing the surfaces of such stainless steel equipment, which are exposed to ammonium carbamate solutions during, e.g., the commercial manufacture of urea and melamine, to the corrosive effects of such solutions for a period of time to induce significant corrosion of such surfaces, followed by contacting said surfaces at a temperature of at least about 100* C for a period of time with an oxidizing agent.

Abstract translation: 描述了一种用于提高暴露于含氨基甲酸铵溶液的奥氏体不锈钢的耐腐蚀性的方法。 该方法包括将例如尿素和三聚氰胺的商业制造期间暴露于氨基甲酸铵溶液的这种不锈钢设备的表面暴露于这种溶液的腐蚀作用一段时间以引起这种表面的显着腐蚀 然后在至少约100℃的温度下与氧化剂接触所述表面一段时间。

公开(公告)号：US3720361A

公开(公告)日：1973-03-13

申请号：US3720361D

申请日：1971-03-26

Applicant: STAMICARBON

Inventor： NOMMENSEN J

IPC: D04H3/02 ,  B65H17/32

CPC classification number: D04H3/05 ,  D04H3/009 ,  D04H3/02

Abstract: Process and apparatus for the preparation of a plastics fiber fleece, wherein filaments are moved towards a conveying plane and, prior to their lying down on the conveying plane, are zigzagged by means of air flows slanting upwards which are effected by simultaneously injecting air on one side of a free space and suctioning off air on the opposite side of the space whereby the air flows hit the filaments in the free space.

Abstract translation: 用于制备塑料纤维羊毛的方法和设备，其中细丝向输送平面移动，并且在它们躺在输送平面之前，通过向上倾斜的空气流而曲折，这是通过同时将空气喷射在一个上而实现的 在空间的相对侧吸入空气，由此空气流动在自由空间中击中细丝。

公开(公告)号：US3717210A

公开(公告)日：1973-02-20

申请号：US3717210D

申请日：1971-03-25

Applicant: STAMICARBON

Inventor： SIESWERDA B

IPC: G01G1/00 ,  G01G3/10 ,  G01G7/04 ,  G01G7/00

CPC classification number: G01G7/04 ,  G01G1/00 ,  G01G3/10 ,  Y10S177/09

Abstract: A thermogravimetric balance comprising a vertically disposed load carrying arm connected at each end through tension wires to first and second horizontally disposed balance arms connected at their mid-points to tension strips or wires. The other ends of the balance arms are linked through tension wires to a connecting element so that the balance arms, load carrying arm and connecting element comprise a vertically disposed parallelogram. Rotation of said first balance arm out of its equilibrium position will actuate a control circuit which will effect the application of a restoring movement to the balance arm, the amount of current required to restore the balance arm being used as a measure of the weight value. Dimensional variations due to temperature changes in the load carrying arm are compensated for by effecting compensating movement in the parallelogram structure.

Abstract translation: 一种热重量平衡包括垂直布置的负载承载臂，每个端部通过张力线连接到第一和第二水平设置的平衡臂，所述平衡臂在其中间点处连接到拉紧带或线。 平衡臂的另一端通过张力线连接到连接元件，使得平衡臂，承载臂和连接元件包括垂直设置的平行四边形。 所述第一平衡臂从其平衡位置的旋转将致动一个控制电路，该控制电路将对平衡臂施加恢复运动，恢复平衡臂所需的电流量作为重量值的量度。 通过实现平行四边形结构中的补偿运动来补偿由承载臂中的温度变化导致的尺寸变化。

公开(公告)号：US3708515A

公开(公告)日：1973-01-02

申请号：US3708515D

申请日：1970-02-04

Applicant: STAMICARBON

Inventor： THOMA J ,  KLEIN J ,  GEURTS L

IPC: C07C255/61 ,  C07C20060101 ,  C07C11/12 ,  C07C67/00 ,  C07C253/00 ,  C07C255/45 ,  C07C121/46 ,  C07C121/42

CPC classification number: C07C255/00

Abstract: 1 PROCESS IS DISCLOSED FOR THE CONVERSION OF AN ACETALDIMINE AND ACRYLONITRILE IN A MOLAR RATIO OF AT LEAST 0.8 TO 1, RESPECTIVELY, AND AT A TEMPERATURE OF 70*C. TO 130*C. TO THE CORRESPONDING Y-CYANOBUTYRALDIMINE, THE UNCONVERTED REACTANTS BEING RECOVERED FROM THE REACTION MIXTURE AND RE-CYCLED. THE RESULTING Y-CYANOBUTYRALDIMINE PRODUCT CAN THEN BE HYDROLIZED TO THE CORRESPONDING Y-CYANOBUTYRALDEHYDE.

公开(公告)号：US3705138A

公开(公告)日：1972-12-05

申请号：US3705138D

申请日：1969-06-30

Applicant: STAMICARBON

Inventor： BERG CORNELIS E P V VAN DEN

IPC: C08F210/00 ,  C08F15/40 ,  C08F1/56 ,  C08F17/00

CPC classification number: C08F210/00

Abstract: A process for the preparation of amorphous copolymers of ethylene, one or more other Alpha -alkenes, and optionally one or more compounds containing more than one C=C bond, using a catalyst comprising an aluminum dihalide, a vanadium compound and an organo metal compound, the catalyst being dispersed in a liquid dispersing agent.

Abstract translation: 使用包含二卤化铝，钒化合物和有机金属化合物的催化剂制备乙烯，一种或多种其它α-烯烃和任选的一种或多种含有多于一个C = C键的化合物的无定形共聚物的方法 ，催化剂分散在液体分散剂中。

公开(公告)号：US3701809A

公开(公告)日：1972-10-31

申请号：US3701809D

申请日：1969-11-12

Applicant: STAMICARBON

Inventor： ROOIJ ABRAHAM H DE ,  KWANTEN FERDINAND J G

IPC: C01B21/02 ,  C01B21/14 ,  C01B21/26 ,  C07C131/00 ,  C01B21/00 ,  C01C1/28

CPC classification number: C01B21/1418 ,  C01B21/02 ,  C01B21/26

Abstract: A CYCLIC PROCESS IN WHICH AN AQUEOUS ACID REACTION MIXTURE IS KEPT IN CIRCULATION BETWEEN A ZONE FOR THE SYNTHESIS OF HYDROXYLAMINE AND A ZONE FOR THE SYNTHESIS OF OXIME. NITRIC ACID IS CONTINUOUSLY ADDED TO THE CIRCULATING LIQUID, THE NITRATE IONS BEING CATALYTICALLY REDUCED WITH H2 TO FORM NH2OH AND SOME NH3 AS BY-PRODUCT. THE NH2OH IS CONSUMED IN OXIME SYNTHESIS ZONE AND THE NH3 BY-PRODCUT IS CONTINUOUSLY REMOVED BY CONTACTING THE CIRCULATING LIQUID WITH A MIXTURE CONTAINING NO AND NO2 UNDER SUCH CONDITIONS THAT N2 AND H2O RESULT.

公开(公告)号：US3691729A

公开(公告)日：1972-09-19

申请号：US3691729D

申请日：1971-05-26

Applicant: STAMICARBON

Inventor： ROOY MICHAEL A DE ,  LOGEMANN JOHAN D ,  KOENDERS HENRICUS A A

IPC: C01C1/12 ,  C07C273/04 ,  B01D53/00

CPC classification number: C07C273/04 ,  C01C1/12

Abstract: A process and apparatus for the recovery of ammonia and carbon dioxide from urea synthesis tail gas is disclosed, wherein the tail gas is intensively contacted with an aqueous media in at least one absorption zone, as is known to the art, and thereafter the gas mixture leaving such absorption zone is immediately mixed with a gas which is inert to the constituents of the tail gas. The apparatus involves a gas bubble washer and an intensive gasliquid contactor, with means for supplying inert gas overlying such contactor. By the use of the present invention the possibility of forming an explosive mixture of the gases leaving the absorption zone is eliminated, or at least minimized.

公开(公告)号：US3683002A

公开(公告)日：1972-08-08

申请号：US3683002D

申请日：1969-02-10

Applicant: STAMICARBON

Inventor： BOESTEN WILHELMUS H J ,  SUVERKROPP GEERTRUDES H

IPC: A47B3/00 ,  C07C121/42

CPC classification number: C07C319/28 ,  C07B2200/07 ,  C07C323/60

Abstract: A process for preparing optically active methionine, methionine nitrile, and methionine amide is disclosed. A mixture of L- and D-methionine nitrile is at least partially converted to a salt of optically active Alpha -phenoxypropionic acid, and the resulting salt is subjected to optical separation by crystallization. The resultant optically active methionine nitrile may be converted into methionine or methionine amide. Optically active methionine or methionine amide is useful as a food and feed supplement.

Abstract translation: 公开了一种制备光学活性甲硫氨酸，甲硫氨酸腈和甲硫氨酰胺的方法。 至少部分地将L-和D-甲硫氨酸腈的混合物转化为光学活性α-苯氧基丙酸的盐，所得盐通过结晶进行光学分离。 所得光学活性甲硫氨酸腈可以转化成甲硫氨酸或甲硫氨酸酰胺。 光活性甲硫氨酸或甲硫氨酸酰胺可用作食品和饲料添加剂。