公开(公告)号：ES2054144T3

公开(公告)日：1994-08-01

申请号：ES90108544

申请日：1990-05-07

Applicant: BASF AG

Inventor： FUCHS HUGO DR ,  NEUBAUER GERALD DR ,  RITZ JOSEF DR ,  WEISS FRANZ-JOSEF DR

IPC: C01B21/14

Abstract: The crystalline hydroxylammonium sulphate having a low ammonium sulphate content is prepared by bringing an aqueous solution containing 0.02 to 0.3 part by weight of ammonium sulphate and 0.02 to 0.2 part by weight of sulphuric acid per part by weight of hydroxylammonium sulphate into contact with basic ion exchangers to give a solution having a pH of 3.0 to 4.0, concentration of the aqueous hydroxylammonium sulphate solution thus obtained and crystallisation of at most 70 % by weight of the hydroxylammonium sulphate contained in the aqueous solution.

公开(公告)号：DE59005020D1

公开(公告)日：1994-04-21

申请号：DE59005020

申请日：1990-12-21

Applicant: BASF AG

Inventor： FUCHS HUGO DR ,  PELLKOFER ERICH ,  RITZ JOSEF DR

IPC: C08G69/20

公开(公告)号：DE4125599A1

公开(公告)日：1993-02-04

申请号：DE4125599

申请日：1991-08-02

Applicant: BASF AG

Inventor： FUCHS HUGO DR ,  WEISS FRANZ-JOSEF DR ,  RITZ JOSEF DR

IPC: B01J23/644 ,  B01J23/42 ,  B01J37/03 ,  C01B21/14

Abstract: Process for the preparation of hydroxylammonium salts by reducing nitrogen monoxide with hydrogen in dilute aqueous mineral acids in the presence of suspended platinum supported catalysts partly poisoned with arsenic, at elevated temperature, characterised in that catalysts are used which have been obtained by precipitating metallic platinum from aqueous solutions of platinum salts in the presence of an oxidic arsenic compound by means of reductants onto suspended supports.

公开(公告)号：DE4002260A1

公开(公告)日：1991-08-01

申请号：DE4002260

申请日：1990-01-26

Applicant: BASF AG

Inventor： FUCHS HUGO DR ,  PELLKOFER ERICH ,  RITZ JOSEF DR

IPC: C08G69/20

Abstract: Novel catalyst solns. for use in the anionic polymerisation of lactams comprise (a) 30-45 wt.% of an at least 7 ring-membered lactam contg. 3-5 wt.% alkali metal in the form of an alkali lactamate; (b) 3-8 wt.% 2-pyrrolidone; (c) 15-20 wt.% poly 1-4C alkylene glycol of mol wt. 250-350; (d) up to 5 wt.% primary and/or sec. mono- and/or poly-amine with normal pressure b.pt. above 250 deg.C; and (e) up to 40 wt.% of an aromatic hydrocarbon with b.pt. 80-145 deg.C. The sum of (a)-(e) is 100 wt.%.

公开(公告)号：DE3942334A1

公开(公告)日：1991-06-27

申请号：DE3942334

申请日：1989-12-21

Applicant: BASF AG

Inventor： FUCHS HUGO DR ,  NEUBAUER GERALD DR ,  RITZ JOSEF DR

IPC: C01B21/14 ,  C02F1/26 ,  C07C249/08 ,  C07C249/14 ,  C07C251/44

Abstract: Process for processing aqueous mother liquors containing hydrochloric acid, sulphuric acid and their hydroxylammonium and ammonium salts, characterised in that the mother liquors are brought into intimate contact with an excess of cyclohexanone based on the content of hydroxylammonium salts, while maintaining a pH of 3 to 5.5 by adding alkali metal hydroxide solutions, and the cyclohexanone-oxime-containing cyclohexanone phase is separated off and washed with water until it is virtually free from chloride.

公开(公告)号：DE3916320A1

公开(公告)日：1990-11-22

申请号：DE3916320

申请日：1989-05-19

Applicant: BASF AG

Inventor： FUCHS HUGO DR ,  NEUBAUER GERALD DR ,  RITZ JOSEF DR ,  WEISS FRANZ-JOSEF DR

IPC: C01B21/14

Abstract: The crystalline hydroxylammonium sulphate having a low ammonium sulphate content is prepared by bringing an aqueous solution containing 0.02 to 0.3 part by weight of ammonium sulphate and 0.02 to 0.2 part by weight of sulphuric acid per part by weight of hydroxylammonium sulphate into contact with basic ion exchangers to give a solution having a pH of 3.0 to 4.0, concentration of the aqueous hydroxylammonium sulphate solution thus obtained and crystallisation of at most 70 % by weight of the hydroxylammonium sulphate contained in the aqueous solution.

公开(公告)号：DE3735054A1

公开(公告)日：1989-04-27

申请号：DE3735054

申请日：1987-10-16

Applicant: BASF AG

Inventor： NEUBAUER GERALD DR ,  DECKER EMILE DE ,  FUCHS HUGO DR ,  HOLZKNECHT BERNHARD DR ,  RITZ JOSEF DR

IPC: C07D201/16

Abstract: Caprolactam is recovered from caprolactam distillation low boilers or high boilers or mixtures thereof by the following steps: (a) crystallizing a low or high boiler or a mixture thereof to form purified capro-lactam crystals and a mother liquor, (b) separating off the purified caprolactam crystals to leave a mother liquor, (c) recycling from 5 to 90% by weight of the mother liquor of stage (b) into stage (a) and transferring the remainder of the mother liquor into the subsequent stage (d), (d) crystallizing the remaining mother liquor portion from stage (c) to form caprolactam crystals and a mother liquor, separating off the caprolactam crystals of stage (e) (d) and recycling the same into stage (a) to leave a mother liquor, (f) recycling from 20 to 99% by weight of mother liquor of stage (e) into stage (d) and channeling out the remainder of the impurity-containing mother liquor of stage (e).

公开(公告)号：DE3700336A1

公开(公告)日：1988-07-21

申请号：DE3700336

申请日：1987-01-08

Applicant: BASF AG

Inventor： NEUBAUER GERALD DR ,  SCHNABEL ROLF DR ,  RITZ JOSEF DR ,  HARTIG JUERGEN DR

IPC: C07C29/132 ,  C07C29/88 ,  C07C35/08 ,  C07C29/50 ,  C07C49/403

Abstract: A further embodiment of the method for processing reaction mixtures which contain cyclohexyl hydrogen peroxide which have been obtained by oxidising cyclohexane using molecular oxygen, or gases containing molecular oxygen, in the liquid phase at a temperature of 130 to 200@C under a pressure of 5 to 125 bar, by reacting cycloolefins at elevated temperature in the presence of catalysts, cyclohexyl hydrogen peroxide being reacted with cyclohexene at elevated temperature in the presence of compounds of transition metals of group 4 to 6 of the Periodic Table which are soluble in cyclohexane, then hydrogenating the cyclohexene oxide formed in a manner known per se in the presence of hydrogenation catalysts at elevated temperature to give cyclohexanol in accordance with Patent ... (Patent Application P 3636056.2), characterised in that the reaction of cyclohexyl hydrogen peroxide with cyclohexene is carried out in the presence of at least one cyclohexane-insoluble compound of a transition metal of group 4 to 6, selenium, tellurium or a boride.

公开(公告)号：DE3608495A1

公开(公告)日：1987-09-17

申请号：DE3608495

申请日：1986-03-14

Applicant: BASF AG

Inventor： FUCHS HUGO DR ,  NEUBAUER GERALD DR ,  RITZ JOSEF DR ,  THOMAS ERWIN ,  WEISS FRANZ-JOSEF DR

IPC: C01B21/14

公开(公告)号：DE3464578D1

公开(公告)日：1987-08-13

申请号：DE3464578

申请日：1984-12-14

Applicant: BASF AG

Inventor： GROSSKINSKY OTTO-ALFRED DR ,  FROMMER ELMAR DR ,  RITZ JOSEF DR ,  THOMAS ERWIN ,  WEISS FRANZ-JOSEF DR

IPC: C07D311/60 ,  C01B21/14 ,  C07C53/10 ,  C07C53/122

Abstract: Stabilized solutions of hydroxylamine or its salts, containing anthocyans of the formula where R1, R2, R3 and R4 are each hydrogen, hydroxyl or C1-C4-alkoxy and X is an anion of a strong mineral acid, and their preparation.