公开(公告)号：AU748827B2

公开(公告)日：2002-06-13

申请号：AU9158698

申请日：1998-08-04

Applicant: BASF AG

Inventor： WATZENBERGER OTTO ,  MAUER PETER ,  STROFER ECKHARD ,  SCHELLING HEINER ,  SCHNEIDER HANS-MICHAEL

IPC: C01B21/14

Abstract: An aqueous solution of free hydroxylamine is prepared by treating a hydroxylammonium salt with ammonia by the countercurrent method in a stripping column by a process in which hydroxylamine is liberated and at the same time the solution obtained is separated by distillation into an aqueous hydroxylamine solution and a salt fraction. The novel process can be carried out in a simple and gentle manner and on a large scale. The danger of decomposition is minimized owing to the low thermal load, the low concentration of hydroxylamine and the short residence time in the process.

公开(公告)号：MXPA00007646A

公开(公告)日：2001-04-01

申请号：MXPA00007646

申请日：2000-08-04

Applicant: BASF AG

Inventor： STROFER ECKHARD ,  SCHWARZ HANS VOLKMAR ,  SCHARR VOLKER ,  PENZEL ULRICH ,  JACOBS JAN D ,  SEYFERT WILFRIED DR ,  SCHWEERS OLAF DR

IPC: C07B61/00 ,  C07C209/78 ,  C07C211/45 ,  C07C211/50 ,  C07C263/10 ,  C07C265/14

公开(公告)号：CA2320477A1

公开(公告)日：1999-08-12

申请号：CA2320477

申请日：1999-01-26

Applicant: BASF AG

Inventor： SCHARR VOLKER ,  PENZEL ULRICH ,  STROFER ECKHARD ,  JACOBS JAN ,  SEYFERT WILFRIED ,  SCHWARZ HANS VOLKMAR ,  SCHWEERS OLAF

IPC: C07B61/00 ,  C07C209/78 ,  C07C211/45 ,  C07C211/50 ,  C07C263/10 ,  C07C265/14

Abstract: The invention relates to a method for the production of methylenedi(phenylamine) by reacting aniline with formaldehyde in the presence of acid catalysts. The method is characterized in that aniline and optionally an acid catalyst are treated in a semi-continuos method; formaldehyde and optionally an acid catalyst are fed through a mixing organ in a circuit in which aniline, optionally an acid catalyst and optionally an already added formaldehyde are circulated and tempering the reaction mixture at a temperature of over 75 ~C after feeding at least 50 % of the total amount of formaldehyde. The invention also relates to a method for the production of polyisocyanates by phosgenating the amines thus obtained and the polyisocyanates obtained according to this method.

公开(公告)号：NO327773B1

公开(公告)日：2009-09-21

申请号：NO20000551

申请日：2000-02-03

Applicant: BASF AG

Inventor： SCHNEIDER HANS-MICHAEL ,  WATZENBERGER OTTO ,  MAUER PETER ,  STROFER ECKHARD ,  SCHELLING HEINER

IPC: C01B21/14

Abstract: An aqueous solution of free hydroxylamine is prepared by treating a hydroxylammonium salt with ammonia by the countercurrent method in a stripping column by a process in which hydroxylamine is liberated and at the same time the solution obtained is separated by distillation into an aqueous hydroxylamine solution and a salt fraction. The novel process can be carried out in a simple and gentle manner and on a large scale. The danger of decomposition is minimized owing to the low thermal load, the low concentration of hydroxylamine and the short residence time in the process.

公开(公告)号：MX2007014817A

公开(公告)日：2008-02-21

申请号：MX2007014817

申请日：2006-06-12

Applicant: BASF AG

Inventor： SCHELLING HEINER ,  STROFER ECKHARD ,  HASSE HANS ,  BLAGOV SERGEJ

IPC: C07C41/50 ,  C07C43/30

Abstract: La invencion se refiere aun metodo para la produccion de eteres de polioximetilen dialquilo de la formula H2m+1CmO(CH2O)nCmH2m+1, en donde n = 2 -10, m independientemente = 1 o 2, en donde un eter de dialquilo seleccionado a partir de eter dimetilico, eter metil etilico o eter dietilico y trioxano se alimentan en un reactor y reaccionados en presencia de un catalizador acido, por lo que la cantidad de agua introducida en la mezcla de reaccion con el eter de dialquilo, trioxano y/o el catalizador es

公开(公告)号：NO20076505A

公开(公告)日：2008-01-28

申请号：NO20076505

申请日：2007-12-19

Applicant: BASF AG

Inventor： STROFER ECKHARD ,  KARL JORN ,  TEBBEN GERD-DIETER ,  SCHELLING HEINER ,  PINKOS ROLF ,  HAUNERT ANDREA ,  EIERMANN MATTHIAS

IPC: C10L1/02 ,  C10L1/14 ,  C10L1/185 ,  C10L1/198 ,  C10L10/02 ,  C10L10/12

CPC classification number: C10L1/14 ,  C10G2300/1011 ,  C10G2300/307 ,  C10G2300/80 ,  C10L1/026 ,  C10L1/1616 ,  C10L1/1852 ,  C10L1/19 ,  C10L1/1985 ,  C10L10/02 ,  C10L10/12 ,  Y02E50/13 ,  Y02P30/20

公开(公告)号：NO20076301A

公开(公告)日：2008-01-14

申请号：NO20076301

申请日：2007-12-07

Applicant: BASF AG

Inventor： STROFER ECKHARD ,  HASSE HANS ,  BLAGOV SERGEJ

IPC: C08G2/08 ,  C07C41/56

CPC classification number: C07C41/48 ,  C07C41/56 ,  C07C41/58 ,  C08G2/08 ,  C07C43/30

公开(公告)号：CA2623573A1

公开(公告)日：2007-02-15

申请号：CA2623573

申请日：2006-08-01

Applicant: BASF AG

Inventor： GRUETZNER THOMAS ,  BLAGOV SERGEJ ,  FRIESE THORSTEN ,  STAMMER ACHIM ,  LANG NEVEN ,  STROFER ECKHARD ,  SIEGERT MARKUS ,  HASSE HANS

IPC: C07D323/06

Abstract: The invention relates to an integrated process for preparing trioxane from formaldehyde in which, in a first step, a stream A 1 comprising water and formaldehyde and a recycle stream B 2 consisting substantially of water and formaldehyde are fed to a trioxane synthesis reactor in which the formaldehyde is converted to trioxane to obtain a product stream A 2 comprising trioxane, water and formaldehyde. Stream A 2 and a recycle stream D 1 comprising trioxane, water and formaldehyde are fed to a first distillation column and distilled at a pressure in the range from 0.1 to 2.5 bar to obtain a stream B 1 enriched in trioxane, and the stream B 2 consisting substantially of water and formaldehyde. Stream B 1 is fed to a second distillation column and distilled at a pressure in the range from 0.2 to 17.5 bar to obtain a product stream C 2 consisting substantially of trioxane, and a stream C 1 comprising trioxane, water and formaldehyde. Stream C 1 is fed to a third distillation column and distilled at a pressure in the range from 1 to 10 bar to obtain the recycle stream D 1 comprising trioxane, water and formaldehyde, and a stream D 2 consisting substantially of water.

公开(公告)号：ES2256201T3

公开(公告)日：2006-07-16

申请号：ES01907532

申请日：2001-02-14

Applicant: BASF AG

Inventor： WEBER MARKUS ,  STERZEL HANS-JOSEF ,  STROFER ECKHARD ,  WATZENBERGER OTTO

IPC: C01B21/14 ,  C07C217/20 ,  C07C235/60

Abstract: Disoluciones de hidroxilamina estabilizadas que contienen como estabilizador al menos un compuesto seleccionado a partir del grupo constituido por tri-(4- (2, 3-di-hidroxifenil)-4-oxabutil)-amina, tri-(4-(2, 3-di- hidroxifenil)-4-ceto-3-azabutil)-amina, o sus sales.

公开(公告)号：CA2335068C

公开(公告)日：2005-05-17

申请号：CA2335068

申请日：1999-06-02

Applicant: BASF AG

Inventor： SANDER MICHAEL ,  STROFER ECKHARD ,  THERRE JORG ,  RICHTER SIEGFRIED ,  HANTEL BURGHARD ,  LEUTHOLD RENE ,  SCHWARZ HANS VOLKMAR ,  MAURER MARKUS

IPC: C07C263/20 ,  C07C209/62 ,  C07C211/51 ,  C07C263/10 ,  C07C263/18 ,  C07C265/14 ,  C08G18/50 ,  C08G65/26

Abstract: The invention relates to a method for treating distillation residues from th e synthesis of toluene diisocyanate by reacting the distillation residues with water. The invention is characterized in that the TDI distillation residues are reacted with water in a continuos or semi-continuo s method in a back-mixed reactor in the presence of hydrolyzates.