公开(公告)号：JPH10130326A

公开(公告)日：1998-05-19

申请号：JP29967297

申请日：1997-10-17

Applicant: BAYER AG

Inventor： KLIPPER REINHOLD M ,  WAGNER RUDOLF DR ,  HALLE OLAF DR ,  RALL KLAUS DR ,  LUETJENS HOLGER DR

IPC: B01J20/281 ,  B01J31/10 ,  B01J39/20 ,  C08F8/36 ,  B01J20/26

Abstract: PROBLEM TO BE SOLVED: To prepare the subject cationic ion exchanger which is useful for treatment of drinking water with a largely reduced bleeding level of impurities by sulfonating unfuctional polymer at an elevated temperature and/or sulfonation in the absence of oxygen. SOLUTION: The crosslinked styrene polymer is sulfonated at 125-150 deg.C and/or in the absence of oxygen to prepare the polymer preferably having the conductivity profile of

公开(公告)号：JPS61231055A

公开(公告)日：1986-10-15

申请号：JP6610986

申请日：1986-03-26

Applicant: BAYER AG

Inventor： WOLFF JOACHIM ,  WOLF KARLHEINZ ,  KLIPPER REINHOLD M ,  LANGE PETER M

IPC: C07C245/20 ,  C09B29/00 ,  C09B41/00 ,  C09B67/26

公开(公告)号：DE3687182D1

公开(公告)日：1993-01-14

申请号：DE3687182

申请日：1986-03-15

Applicant: BAYER AG

Inventor： WOLFF JOACHIM ,  WOLF KARLHEINZ ,  KLIPPER REINHOLD M ,  LANGE PETER M

IPC: C07C245/20 ,  C09B29/00 ,  C09B41/00 ,  C09B67/26

Abstract: Prodn. of aromatic diazonium salts (I) is effected by diazotising the corresp. amine with a nitrite salt in the presence of an insol. acid. Pref. reaction is effected in aq.(-organic) medium in the presence of (in)organic cation exchanger, esp. a resin contg. SO3H gps.. The exchanger is used in an amt. of at least 1 (esp. 2) equivs. per mole of nitrite. The resulting soln. is then reacted with a coupling component in the presence of 0-30 wt.% of organic solvents and/or hydrotropes and/or dispersants and an acid binder comprising a Li base, NH4OH or an alkylamine or alkylammonium cpd..

公开(公告)号：CA2076429A1

公开(公告)日：1993-02-23

申请号：CA2076429

申请日：1992-08-19

Applicant: BAYER AG

Inventor： HELLER HAROLD ,  MINZ FRANZ-RUDOLF ,  KLIPPER REINHOLD M ,  MITSCHKER ALFRED ,  HOFFMANN HEIKO

IPC: B01J41/04 ,  B01J41/07 ,  B01J41/14 ,  C01D3/16 ,  C02F1/42 ,  C08F8/32 ,  C08F120/56

Abstract: Weakly basic anion exchangers, processes for their preparation by aminolysis and their use for removing sulphate ions from aqueous liquids A b s t r a c t Weakly basic anion exchangers of the poly(meth)acrylamide type which have been prepared by aminolysis of poly(meth)acrylonitrile or poly(meth)acrylate with polyamines of defined composition have an improved absorption capacity for sulphate ions and are suitable for selectively removing sulphate ions from aqueous liquids, in particular from sodium chloride brine and from waste waters.

公开(公告)号：DE3511752A1

公开(公告)日：1986-10-02

申请号：DE3511752

申请日：1985-03-30

Applicant: BAYER AG

Inventor： WOLFF JOACHIM ,  WOLF KARLHEINZ ,  KLIPPER REINHOLD M ,  LANGE PETER M

IPC: C07C245/20 ,  C09B29/00 ,  C09B41/00 ,  C09B67/26 ,  C07C113/04

公开(公告)号：HU212975B

公开(公告)日：1997-01-28

申请号：HU9202703

申请日：1992-08-19

Applicant: BAYER AG

Inventor： HELLER HAROLD ,  HOFFMANN HEIKO ,  KLIPPER REINHOLD M ,  MINZ FRANZ-RUDOLF ,  MITSCHKER ALFRED

IPC: B01J41/04 ,  B01J41/07 ,  B01J41/14 ,  C01D3/16 ,  C02F1/42 ,  C08F8/32 ,  B01J41/12

Abstract: Weakly basic anion exchangers of the poly(meth)acrylamide type, which have been prepared by aminolysis of poly(meth)acrylonitrile or poly(meth)acrylate with polyamines of a defined composition, have an improved uptake capacity for sulphate ions and are suitable for selective removal of sulphate ions from aqueous liquids, especially from sodium chloride brines and from waste waters.

公开(公告)号：BR8601341A

公开(公告)日：1986-12-02

申请号：BR8601341

申请日：1986-03-26

Applicant: BAYER AG

Inventor： WOLFF JOACHIM ,  WOLF KARLHEINZ ,  KLIPPER REINHOLD M ,  LANGE PETER M

IPC: C07C245/20 ,  C09B29/00 ,  C09B41/00 ,  C09B67/26 ,  C07C113/04 ,  C09B62/03