公开(公告)号：DE59904211D1

公开(公告)日：2003-03-13

申请号：DE59904211

申请日：1999-10-05

Applicant: BASF AG

Inventor： RUFF DR ,  BAUMANN DIETER ,  AQUILA DR ,  SCHUBERT DR ,  LECHTKEN DR

IPC: B01J31/22 ,  C07B61/00 ,  C07C46/08 ,  C07C46/10 ,  C07C50/02 ,  C07C50/04

Abstract: Purification of 2,3,5-trimethyl-p-benzoquinone (TMQ) or isolation of TMQ from a mixture, by crystallization. An Independent claim is included for preparation of TMQ by catalytic oxidation of TMP with oxygen to give a mixture containing TMQ as well as TMP and/or at least 1 of solvent, catalyst-residue, by-product and intermediate, followed by work-up as above.

公开(公告)号：ES2179252T3

公开(公告)日：2003-01-16

申请号：ES97115933

申请日：1997-09-12

Applicant: BASF AG

Inventor： WEYER HANS-JURGEN DR ,  ECK BERND ,  BAUMANN DIETER ,  MALTRY BERNHARD

IPC: B01J2/00 ,  B01J2/02 ,  B01J2/26 ,  C07C67/52 ,  C07C69/675

Abstract: The production of neopentyl glycolhydroxypivalate (NPG-HP) granules (I) comprises pouring molten NPG-HP onto a cooling surface so that the melt solidifies, using a melt containing 3 wt.% NPG-HP crystals. Also claimed are: (i) NPG-HP granules (I) obtained by the above process, especially: (a) spherical granules with an average diameter of 3-16 mm; or (b) granules with an average diameter of 20-100 mm and at least two parallel faces 15-30 mm apart; and (ii) the use of a granulating system for the above process, with a precooler (2) for the NPG-HP melt, a precrystalliser (3), and a drop-forming system (4) or a flat spreader to bring the melt onto a cooling belt (6), with a crusher if a flat spreader is used.

公开(公告)号：CA2407728A1

公开(公告)日：2002-10-29

申请号：CA2407728

申请日：2001-04-30

Applicant: BASF AG

Inventor： BAUMANN DIETER ,  FUCHS EBERHARD ,  FISCHER ROLF-HARTMUTH ,  MELDER JOHANN-PETER ,  BASSLER PETER ,  OHLBACH FRANK

IPC: C07D223/12 ,  C07D201/08

Abstract: The invention relates to a method for producing caprolactam, which is characterized by a) reacting, in the presence of a catalyst, a mixture (I) that contains 6-aminocapronitrile and water in the gaseous phase to give a mixture (II) that contains caprolactam, ammonia, water, high-boiling and low - boiling substances, subsequently b) removing the ammonia from mixture (II), thereby producing a mixture (III) that contains caprolactam, water, high- boiling and low-boiling substances, c) removing the water from mixture (III) , thereby producing a mixture (IV) that contains caprolactam, high-boiling and low-boiling substances, and finally d) obtaining by crystallization a caprolactam-containing solid substance (V) from mixture (IV), the weight percentage of caprolactam in the solid substance (V) being higher than in mixture (IV).

公开(公告)号：DE59707630D1

公开(公告)日：2002-08-08

申请号：DE59707630

申请日：1997-09-12

Applicant: BASF AG

Inventor： WEYER DR ,  ECK BERND ,  BAUMANN DIETER ,  MALTRY BERNHARD

IPC: B01J2/00 ,  B01J2/02 ,  B01J2/26 ,  C07C67/52 ,  C07C69/675

Abstract: The production of neopentyl glycolhydroxypivalate (NPG-HP) granules (I) comprises pouring molten NPG-HP onto a cooling surface so that the melt solidifies, using a melt containing 3 wt.% NPG-HP crystals. Also claimed are: (i) NPG-HP granules (I) obtained by the above process, especially: (a) spherical granules with an average diameter of 3-16 mm; or (b) granules with an average diameter of 20-100 mm and at least two parallel faces 15-30 mm apart; and (ii) the use of a granulating system for the above process, with a precooler (2) for the NPG-HP melt, a precrystalliser (3), and a drop-forming system (4) or a flat spreader to bring the melt onto a cooling belt (6), with a crusher if a flat spreader is used.

公开(公告)号：IN187727B

公开(公告)日：2002-06-15

申请号：IN2100MA1998

申请日：1998-09-18

Applicant: BASF AG

Inventor： BAUMANN DIETER ,  PUTTER HERMANN ,  HANNEBAUM HEINZ

IPC: C25B3/25 ,  C07D307/88 ,  C07D307/77

Abstract: A process for preparing phthalides byI. reducing phthalic acid or phthalic acid derivatives, where the carboxyl groups may be replaced by units which can be derived from the carboxyl groups by a condensation reaction and where one or more of the hydrogens of the o-phenylene unit may be substituted by inert radicals, at a cathode in a undivided electrolytic cell and dissolved in an electrolyte,II. discharging the electrolyte from the electrolytic cell when the reaction has proceeded to the stage where the molar ratio (M), formed by the proportion of phthalide and the sum of the proportions of phthalide and phthalic acid of phthalic acid derivatives in the electrolyte, is from 0.8:1 to 0.995:1, andIII. crystallizing the phthalides from the electrolyte and removing them from the mother liquor, if appropriate after distillative work-up of the electrolyte is described.

公开(公告)号：BR0011403A

公开(公告)日：2002-05-14

申请号：BR0011403

申请日：2000-05-31

Applicant: BASF AG

Inventor： ECK BERND ,  HEILEK J RG ,  BAUMANN DIETER ,  SCHLIEPHAKE VOLKER

IPC: C07C51/64 ,  C07C51/25 ,  C07C51/43 ,  C07C51/47 ,  C07C57/05 ,  C07C57/07

Abstract: Acrylic acid or methacrylic acid is purified by crystallization to obtain crystals and a mother liquor, by a process in which the crystals are washed with a wash liquid containing the acid and having a temperature from 15 to 40° C. Furthermore, a process for the preparation of acrylic acid or methacrylic acid comprises the abovementioned purification process.

公开(公告)号：DE10036881A1

公开(公告)日：2002-02-07

申请号：DE10036881

申请日：2000-07-28

Applicant: BASF AG

Inventor： HEILEK JOERG ,  ECK BERND ,  BAUMANN DIETER

IPC: C07C51/43 ,  C07C51/47 ,  B01D9/00

Abstract: Purifying crude acrylic acid melt by converting to a crude acrylic acid suspension by cooling, and separating from remaining residual melt in wash column. In purifying a crude melt of acrylic acid (I) containing (excluding water) \- 80 wt.% (I), \- 100 ppm weight acetic acid and \- 10 ppm weight propionic acid, a suspension of purer (I) crystals (IA) and less pure residual melt (II) is produced by cooling the crude melt in the presence of 0.20- 10 wt.% water with respect to (I); and, after optional mechanical separation of part of (II), (IA) are freed from (II) in a column operating with forced transport of (IA) by washing with a melt of purified (IA).

公开(公告)号：CO5100970A1

公开(公告)日：2001-11-27

申请号：CO98054043

申请日：1998-09-18

Applicant: BASF AG

Inventor： BAUMANN DIETER ,  PUTTER HERMANN ,  HANNEBAUM HEIZ

IPC: C07D305/12 ,  C07D307/88 ,  C25B3/25

Abstract: El proceso para la recuperación de ftaluro proveniente de una mezcla de reacción de síntesis de ftaluro así obtenida mediante(a) destilar compuestos que tienen un punto de ebullición por debajo del punto de ebullición de dicho ftaluro de dicha mezcla de reacción, siempre y cuando dichos compuestos estén presentes en dicha mezcla de reacción, para obtener un ftaluro crudo como producto de fondo,(b) cristalizar dicho ftaluro proveniente de un fundido con una temperatura entre -10 y 75°C, de dicho ftaluro crudo, en donde el contenido de sólidos en el cristalizador se encuentra entre 10 y 90 gr por 100 gr de alimentación de ftaluro crudo.

公开(公告)号：DE10021199A1

公开(公告)日：2001-11-08

申请号：DE10021199

申请日：2000-05-03

Applicant: BASF AG

Inventor： BASLER PETER ,  BAUMANN DIETER ,  FISCHER ROLF ,  FUCHS EBERHARD ,  MELDER JOHANN-PETER ,  OHLBACH FRANK

IPC: C07D223/10 ,  C07B61/00 ,  C07D201/08 ,  C07D201/16

Abstract: The invention relates to a method for producing caprolactam, characterized in that a) a mixture (I) containing 6-aminocapronitrile and water in the liquid phase is converted into a mixture (II) containing caprolactam, ammonia, water, high boilers and low boilers in the presence of a catalyst; b) ammonia is then removed from mixture (II), leaving a mixture (III) containing caprolactam, water, high boilers and low boilers; c) water is then removed from mixture (III) leaving a mixture (IV) containing caprolactam, high boilers and low boilers, and d) a solid (V) containing caprolactam is obtained from mixture (IV) by crystallization, the proportion by weight of caprolactam in the solid (V) being greater than that in the mixture (IV).

公开(公告)号：DE59703774D1

公开(公告)日：2001-07-19

申请号：DE59703774

申请日：1997-11-03

Applicant: BASF AG

Inventor： SCHOENHERR DR ,  RAULS DR ,  ASCHERL HERMANN ,  LETZELTER THOMAS ,  BAUMANN DIETER ,  POTTHOFF-KARL DR

IPC: C11D1/04 ,  C07C227/42 ,  C07C229/16 ,  C07C229/24

Abstract: A method for the preparation of a crystalline solid comprising a glycine-N,N-diacetic acid derivative of formula (I) with a very low hygroscopicity, comprises fixing the water content of the starting material containing (I) at 10-30 wt.% and then carrying out crystallisation: MOOC-CH(R)-N(CH2COOM)2 (I) R = 1-30C alkyl or 2-30C alkenyl (both optionally containing 1-5 OH, formyl, 1-4C alkoxy(carbonyl) or phenoxy groups and/or optionally containing up to 5 non-adjacent O atoms in the chain), alkoxylate groups of formula (II), phenyl-(1-20 C)-alkyl (optionally containing up to 3 1-4C alkyl, OH, carboxyl, sulpho or 1-4C alkoxycarbonyl ring substituents), 5- or 6-membered optionally benzalated heterocyclic ring containing up to 3 N, O or S atoms (optionally containing up to 3 1-4C alkyl, OH, carboxyl, sulpho or 1-4C alkoxycarbonyl substituents) or a group of formula (III): -(CH2)k-O-(A O)m-(A O)n-Y (II) -A-CH(COOM)-N(CH2COOM)2 (III) A , A = 2-4C 1,2-alkylene; Y = H, 1-12C alkyl, phenyl or 1-4C alkoxycarbonyl; k = 1-3; m, n = 0-50; A = 1-12C alkylene or single bond; and M = H, alkali(ne earth) metal or optionally substituted ammonium, with the provision that m+n = at least 4.