-
公开(公告)号：US3639269A
公开(公告)日：1972-02-01
申请号：US3639269D
申请日：1969-08-25
Applicant: DEGUSSA
Inventor： KOBERSTEIN EDGAR , LUSSLING THEODOR , NOLL EWALD , SUCHSLAND HELMUT , WEIGERT WOLFGANG
IPC: B01J23/843 , B01J23/83 , B01J23/847 , B01J23/882 , B01J23/887 , B01J27/185 , B01J27/186 , B01J27/192 , C07C45/34 , C07C45/35 , B01J11/82
CPC classification number: C07C45/34 , B01J23/8876 , B01J27/186 , B01J27/192 , B01J2523/00 , C07C45/35 , C07C47/22 , B01J2523/3737 , B01J2523/51 , B01J2523/54 , B01J2523/68 , B01J2523/842 , B01J2523/845 , B01J2523/847 , B01J2523/57
Abstract: A catalyst for the oxidation of alkenes to unsaturated aldehydes and carboxylic acids containing Ni, Co, Fe, Bi, P, Mo and O is improved by adding tantallum oxide or samarium oxide. The catalyst can be employed on a carrier.
Abstract translation: 通过加入氧化钽或氧化钐来改善烯烃氧化为不饱和醛和含有Ni，Co，Fe，Bi，P，Mo和O的羧酸的催化剂。 催化剂可以用在载体上。
-
公开(公告)号：US3873595A
公开(公告)日：1975-03-25
申请号：US37210473
申请日：1973-06-21
Applicant: DEGUSSA
Inventor： LUSSLING THEODOR , SCHAEFER HANS , WEIGERT WOLFGANG
IPC: B01J23/18 , B01J23/22 , C07C255/51 , C07C121/02 , C07C121/56
CPC classification number: C07C253/28 , B01J23/22 , C07C255/51 , C07C255/50
Abstract: A catalyst useful in preparing o-phthalodinitrile from o-xylene comprises antimony oxide and vanadium oxide and/or antimony vanadate. The antimony oxide is present as Beta -antimony tetroxide.
Abstract translation: 用于从邻二甲苯制备邻酞二腈的催化剂包括氧化锑和氧化钒和/或钒酸锑。 氧化锑以四氧化锑为主。
-
13.发明授权
公开(公告)号：US3867422A
公开(公告)日：1975-02-18
申请号：US42273873
申请日：1973-12-07
Applicant: DEGUSSA
Inventor： HEIMBERGER WERNER , SCHMITT HERMANN , SCHREYER GERD , THEISSEN FERDINAND , WEIGERT WOLFGANG
IPC: C07C255/04 , C07C20060101 , C07C67/00 , C07C253/00 , C07C253/04 , C07C253/32 , C07C121/20 , C07C121/22
CPC classification number: C07C255/00
Abstract: Malonodinitrile produced from cyanogen halide and acetonitrile and containing fumarodinitrile as an impurity is purified and stabilized by recrystallizing from an aliphatic alcohol or dialkyl ether in the presence of benzonitrile.
Abstract translation: 由氰卤化物和乙腈生成的含有作为杂质的烟草腈的丙二腈是通过在苄腈存在下从脂族醇或二烷基醚中重结晶来纯化和稳定的。
-
公开(公告)号：US3687621A
公开(公告)日：1972-08-29
申请号：US3687621D
申请日：1970-05-15
Applicant: DEGUSSA
Inventor： GEIGER FRIEDHELM , LUSSLING THEODOR , THEISSEN FERDINAND , WEIGERT WOLFGANG
CPC classification number: C01C3/003
Abstract: CYANOGEN IS PREPARED BY REACTING HYDROGEN CYANIDE AND CHLORINE IN THE PRESENCE OF A SURFACE ACTIVE CATALYST. THE PRODUCT STILL CONTAINING HYDROGEN CYANIDE IS TREATED WITH 1 TO 1.1 MOLE OF CHLORINE PER MOLE OF HYDROGEN CYANIDE REMAINING AT 195 TO 800* C. FOR 10 TO 0.01 SECOND AND IN THE PRESENCE OF THE SURFACE ACTIVE CATALYST, PREFERABLY ACTIVATED CARBON.
-
公开(公告)号：US3618295A
公开(公告)日：1971-11-09
申请号：US3618295D
申请日：1969-11-14
Applicant: DEGUSSA
Inventor： GEIGER FRIEDHELM , LUSSLING THEODOR , WEIGERT WOLFGANG
Abstract: A MIXTURE OF CYANOGEN CHLORIDE AND HYDROGEN CHLORIDE IS SEPARATED BY MEANS OF ORGANIC LIQUID IN WHICH THE CYANOGEN CHLORIDE IS ABSORBED BUT IN WHICH THE HYDROGEN CHLORIDE IS INSOLUBLE.
-
Patent Agency Ranking
公开(公告)号：US3595926A
公开(公告)日：1971-07-27
申请号：US3595926D
申请日：1969-10-24
Applicant: DEGUSSA
Inventor： MANN HANS-JOACHIM , POHL WALTER , SIMON KLAUS , WEIGERT WOLFGANG
CPC classification number: C08G2/08
Abstract: PROCESS FOR THE PRODUCTION OF A FREE FLOWING PARAFORMALDEHYDE PRODUCT WHICH COMPRISES SPRAYING A LIQUID FORMALDEHYDE CONCENTRATE CONTAINING 85 TO 90% BY WEIGHT OF FORMALDEHYDE IN THE FORM OF DROPLETS INTO THE UPPER PORTION OF A COOLING TOWER SUPPLYING A COOLING INERT GAS AT A TEMPERATURE WHICH IS BELOW +39*C., AND PREFERABLY BETWEEN -40 AND +30*C., TO THE COOLING TOWER AND PASSING IT UPWARDLY THERETHROUGH, PERMITTING THE DROPLETS TO SOLIDIFY AS THEY DROP THROUGH THE RISING GAS BEFORE THEY REACH THE BOTTOM OF THE TOWER AND WITHDRAWING THE SOLIDIFIED PARTICLES FROM THE BOTTOM OF THE TOWER. PREFERABLY A FLUIDIZED BED OF SOLIDIFIED PARAFORMALDEHYDE PARTICLES IS MAINTINED IN THE BOTTOM PORTION OF THE TOWER AND THE SOLIDIFIED PARTICLES ARE FURTHER COOLED AFTER REMOVAL FROM THE TOWER.
-
公开(公告)号：US3488919A
公开(公告)日：1970-01-13
申请号：US3488919D
申请日：1968-09-23
Applicant: DEGUSSA
Inventor： SCHREYER GERD , WEIGERT WOLFGANG
CPC classification number: C01C3/0295
-
公开(公告)号：US3926744A
公开(公告)日：1975-12-16
申请号：US42830473
申请日：1973-12-26
Applicant: DEGUSSA
Inventor： NOLL EWALD , SCHAEFER HANS , SCHMID HORST , WEIGERT WOLFGANG
IPC: B01D53/72 , B01D53/77 , C07C27/00 , C07C27/14 , C07C27/26 , C07C45/00 , C07C45/78 , C07C47/22 , C07C51/00 , C07C51/25 , C07C51/42 , C07C51/48 , C07C57/07 , C07C67/00 , B01D3/34 , B01D3/00
CPC classification number: C07C51/252 , C07C45/783 , C07C51/43 , C07C51/48 , Y10S203/22 , C07C47/22 , C07C57/04
Abstract: There is provided a process for the recovery of acrylic acid and acrolein from the gas mixture resulting from the catalytic gas phase oxidation of propylene or acrolein by washing the gas mixture with liquids in which at first the acrylic acid is dissolved at higher temperature and then the acrolein is dissolved at lower temperature. The improvement comprises washing the gas mixture for the separation of the acrylic acid at temperatures from about 60* to 120* C. with a washing liquid which is a mixture of water and organic liquid and then washing the gas mixture with a washing liquid which is water or a mixture of water and organic liquid at temperatures between 0* and 30* C. The organic liquid used has a higher boiling point than acrylic acid, does form an azeotrope with water alone, but does not form an azeotrope with acrolein or a mixture of water and acrolein, has slight miscibility with water and forms a solution with acrylic acid in which the acrylic acid has an activity coefficient of less than about 1.5.
-
19.发明授权
公开(公告)号：US3887490A
公开(公告)日：1975-06-03
申请号：US38954373
申请日：1973-08-20
Applicant: DEGUSSA
Inventor： SCHREYER GERD , THEISSEN FERDINAND , WEIBERG OTTO , WEIGERT WOLFGANG
IPC: B01J23/96 , C01B15/023 , B01J11/18 , C01B15/02
CPC classification number: B01J23/96 , C01B15/023 , Y02P20/584
Abstract: In situ regeneration of noble metal catalysts for the synthesis of hydrogen peroxide by the anthraquinone process is provided by employing as the working solution coming from the extraction or desorption step and being introduced into the hydrogenation step a solution which contains at least 250 mg/liter of hydrogen peroxide, to thereby completely regenerate the noble metal catalyst by full capacity of the hydrogenation step.
Abstract translation: 通过使用来自提取或解吸步骤的工作溶液并将其引入氢化步骤中，提供了通过蒽醌法合成过氧化氢的贵金属催化剂的原位再生，所述溶液含有至少250mg / 过氧化氢，从而通过氢化步骤的全部容量完全再生贵金属催化剂。
-
公开(公告)号：US3875186A
公开(公告)日：1975-04-01
申请号：US40508273
申请日：1973-10-10
Applicant: DEGUSSA
Inventor： HEIN HILMAR , JANZON KARLHEINZ , WEIGERT WOLFGANG , LIEDTKE CHRISTA , MULLER RUDOLF
IPC: C07D307/89 , B01J27/00 , C07B61/00 , C07C51/363 , C07C63/14
CPC classification number: C07C51/363 , C07C63/68
Abstract: Tetrabromophthalic anhydride is produced by brominating phthalic anhydride at elevated temperatures in the presence of sulfuric acid and a bromination catalyst using bromine and hydrogen peroxide as the brominating agent.
Abstract translation: 四溴邻苯二甲酸酐通过在硫酸和溴化催化剂的存在下在升高的温度下溴化邻苯二甲酸酐而使用溴和过氧化氢作为溴化剂来制备。
-
-
-
-
-
-
-
-
-
Search Results
101
records
(took 0.021 seconds)
