公开(公告)号：CA2239253C

公开(公告)日：2006-01-31

申请号：CA2239253

申请日：1996-12-20

Applicant: BASF CORP ,  BASF AG

Inventor： WATZENBERGER OTTO ,  SCHNEIDER HANS-MICHAEL ,  LEUTNER BERND ,  FRIEDERANG ALBRECHT WILHELM

IPC: B01D1/28 ,  C01B21/14 ,  B01D3/14 ,  B01D3/38

Abstract: A process is disclosed for producing an aqueous solution of free hydroxylamine. A solution obtained by treating an hydroxylammonium salt with a base is treated with water or water vapour at a temperature ? 80 C, so as to separate the solution into an aqueous hydroxylamine fraction and a salt fraction. This process is soft and easy to implement on a Large scale. The risk of decomposition is minimised because of the low thermal stresses, the low hydroxylamine concentration and the sho rt dwelling time during implementation of the process.

公开(公告)号：NO319309B1

公开(公告)日：2005-07-11

申请号：NO982847

申请日：1998-06-19

Applicant: BASF AG ,  BASF CORP

Inventor： LEUTNER BERND ,  SCHNEIDER HANS-MICHAEL ,  WATZENBERGER OTTO ,  FRIEDERANG ALBRECHT WILHELM

IPC: B01D1/28 ,  B01D3/14 ,  B01D3/38 ,  C01B21/14

公开(公告)号：PT868399E

公开(公告)日：2003-01-31

申请号：PT96944616

申请日：1996-12-20

Applicant: BASF CORP ,  BASF AG

Inventor： SCHNEIDER HANS-MICHAEL ,  LEUTNER BERND ,  WATZENBERGER OTTO ,  FRIEDERANG ALBRECHT WILHELM

IPC: B01D1/28 ,  B01D3/14 ,  B01D3/38 ,  C01B21/14

公开(公告)号：DK0868399T3

公开(公告)日：2002-10-07

申请号：DK96944616

申请日：1996-12-20

Applicant: BASF AG ,  BASF CORP

Inventor： LEUTNER BERND ,  FRIEDERANG ALBRECHT WILHELM ,  WATZENBERGER OTTO ,  SCHNEIDER HANS-MICHAEL

IPC: B01D1/28 ,  B01D3/14 ,  B01D3/38 ,  C01B21/14

公开(公告)号：DK0868397T3

公开(公告)日：2000-07-17

申请号：DK96944046

申请日：1996-12-20

Applicant: BASF AG

Inventor： SCHNEIDER HANS-MICHAEL ,  LEUTNER BERND

IPC: C01B21/14 ,  C07C20060101 ,  C07C215/00 ,  C07D521/00

Abstract: The present invention relates to stabilized hydroxylamine solutions comprising as stabilizer at least one compound of the formula I R1R2N-A-NR3R4 (I) in which A and R1 to R4 are as defined in the description.

公开(公告)号：NO982848L

公开(公告)日：1998-08-19

申请号：NO982848

申请日：1998-06-19

Applicant: BASF AG

Inventor： SCHNEIDER HANS-MICHAEL ,  LEUTNER BERND

IPC: C07C20060101 ,  C01B21/14 ,  C07C215/00 ,  C07D521/00

Abstract: The present invention relates to stabilized hydroxylamine solutions comprising as stabilizer at least one compound of the formula I R1R2N-A-NR3R4 (I) in which A and R1 to R4 are as defined in the description.

公开(公告)号：HRP960601A2

公开(公告)日：1998-04-30

申请号：HRP960601

申请日：1996-12-19

Applicant: BASF AG

Inventor： LEUTNER BERND ,  WATZENBERGER OTTO ,  SCHNEIDER HANS-MICHAEL ,  FRIEDERANG ALBRECHT WILHELM

IPC: B01D1/28 ,  B01D3/14 ,  B01D3/38 ,  C01B21/14

公开(公告)号：PL314547A1

公开(公告)日：1996-12-09

申请号：PL31454796

申请日：1996-05-30

Applicant: BASF AG

Inventor： KROENER RUDI ,  LEUTNER BERND ,  SCHNEIDER HANS-MICHAEL ,  FRIEDRICH HOLGER ,  HECKY KURT ,  SCHLAEFER DIETER ,  STEINER WOLFGANG

IPC: C25B13/00 ,  C25B15/00

Abstract: Regenerating plastic diaphragms comprises mixing a soln. of mineral acid (I) with a corrosion inhibitor (II) and passing the mixt. through the diaphragm for 0.1-84 (pref. 1-72, esp. pref. 2-24) hrs. at 0-100 (pref. 40-80, esp. pref. 50-70) degrees C. Also claimed are plastic diaphragms obtd. by this process. (I) consists at least partly, pref. entirely, of HCl in a concn. of 0.3-20 (pref. 2-10) wt%, pref. contg. NaCl in a concn. up to the satn. pt., pref. up to 250 g/l. Pref. soln. (I) also contains 500-5000 ppm Cu and/or Fe cpds., esp. Cu(II) and/or Fe(III) salts. The mixt. contains 0.005-5 (pref. 0.05-0.5) wt% (II). Component (II) contains alkynol(s), esp. an alkyne-diol, pref. mixed with 1-25 wt% amine, esp. hexamethylenetetramine (HMTA), ethylhexylamine or diethylhexylamine, and/or 0.1-3 wt% surfactant, esp. a quat. ammonium salt.

公开(公告)号：NO962216L

公开(公告)日：1996-12-02

申请号：NO962216

申请日：1996-05-30

Applicant: BASF AG

Inventor： KRONER RUDI ,  LEUTNER BERND ,  SCHNEIDER HANS-MICHAEL ,  FRIEDRICH HOLGER ,  HECKY KURT ,  SCHLAFER DIETER ,  STEINER WOLFGANG

IPC: C25B13/00 ,  C25B15/00 ,  C25B1/16 ,  C25B1/26 ,  C25B15/08

Abstract: Regenerating plastic diaphragms comprises mixing a soln. of mineral acid (I) with a corrosion inhibitor (II) and passing the mixt. through the diaphragm for 0.1-84 (pref. 1-72, esp. pref. 2-24) hrs. at 0-100 (pref. 40-80, esp. pref. 50-70) degrees C. Also claimed are plastic diaphragms obtd. by this process. (I) consists at least partly, pref. entirely, of HCl in a concn. of 0.3-20 (pref. 2-10) wt%, pref. contg. NaCl in a concn. up to the satn. pt., pref. up to 250 g/l. Pref. soln. (I) also contains 500-5000 ppm Cu and/or Fe cpds., esp. Cu(II) and/or Fe(III) salts. The mixt. contains 0.005-5 (pref. 0.05-0.5) wt% (II). Component (II) contains alkynol(s), esp. an alkyne-diol, pref. mixed with 1-25 wt% amine, esp. hexamethylenetetramine (HMTA), ethylhexylamine or diethylhexylamine, and/or 0.1-3 wt% surfactant, esp. a quat. ammonium salt.

公开(公告)号：NO962216D0

公开(公告)日：1996-05-30

申请号：NO962216

申请日：1996-05-30

Applicant: BASF AG

Inventor： KRONER RUDI ,  LEUTNER BERND ,  SCHNEIDER HANS-MICHAEL ,  FRIEDRICH HOLGER ,  HECKY KURT ,  SCHLAFER DIETER ,  STEINER WOLFGANG

IPC: C25B13/00 ,  C25B15/00 ,  C25B

Abstract: Regenerating plastic diaphragms comprises mixing a soln. of mineral acid (I) with a corrosion inhibitor (II) and passing the mixt. through the diaphragm for 0.1-84 (pref. 1-72, esp. pref. 2-24) hrs. at 0-100 (pref. 40-80, esp. pref. 50-70) degrees C. Also claimed are plastic diaphragms obtd. by this process. (I) consists at least partly, pref. entirely, of HCl in a concn. of 0.3-20 (pref. 2-10) wt%, pref. contg. NaCl in a concn. up to the satn. pt., pref. up to 250 g/l. Pref. soln. (I) also contains 500-5000 ppm Cu and/or Fe cpds., esp. Cu(II) and/or Fe(III) salts. The mixt. contains 0.005-5 (pref. 0.05-0.5) wt% (II). Component (II) contains alkynol(s), esp. an alkyne-diol, pref. mixed with 1-25 wt% amine, esp. hexamethylenetetramine (HMTA), ethylhexylamine or diethylhexylamine, and/or 0.1-3 wt% surfactant, esp. a quat. ammonium salt.