公开(公告)号：JP2000319266A

公开(公告)日：2000-11-21

申请号：JP2000092098

申请日：2000-03-29

Applicant: DEGUSSA

Inventor： LEUTNER JOSEF ,  SCHMIDT MANFRED DR

IPC: C07D251/28

Abstract: PROBLEM TO BE SOLVED: To more economically obtain the subject compound having maximal bulk density, good fluidity and maximal reactivity by including a specific hydrophilic silicic acid with its mean aggregate particle size below a specific value. SOLUTION: This fluid cyanuric chloride is obtained by including 0.05-0.5 wt.% of hydrophilic silicic acid as fluidizing auxiliary. This fluid cyanuric chloride thus obtained has a fluidity evaluation value of

公开(公告)号：JP2000063367A

公开(公告)日：2000-02-29

申请号：JP22159699

申请日：1999-08-04

Applicant: DEGUSSA

Inventor： SCHMIDT MANFRED DR ,  KLATTE CHRISTOPH ,  KUNZ KURT ,  LEUTNER JOSEF ,  OHLEMACHER JUERGEN ,  KRIMMER HANS-PETER DR

IPC: C07D251/26

Abstract: PROBLEM TO BE SOLVED: To provide a method for improving hydrolysis of cyanuric chloride to DCHT-Na under use of caustic soda solution so that the reaction is surely controllable even in industrial scale. SOLUTION: In this producing method, alkali metal hydroxide or alkali earth metal hydroxide in an amount of 1-2.5 equivalent based on 1 mol cyanuric chloride is charged in an aqueous solution or suspension into a vessel and cyanuric chloride is weighed and fed in the form of powder or aqueous suspension to the vessel while keeping pH value of the liquid in the range of 9.5-14 and cooling the liquid and when charging amount of the alkali metal hydroxide or alkaline earth metal hydroxide is stoichiometrically insufficient, residual amount of the above hydroxide including excessive amount up to 25% is weighed and fed during or after addition of cyanuric chloride in order to keep pH value of the liquid and the reaction is finished when the pH value does not substantially change any longer at selected temperature.

公开(公告)号：AT429422T

公开(公告)日：2009-05-15

申请号：AT99114036

申请日：1999-07-20

Applicant: EVONIK DEGUSSA GMBH

Inventor： SCHMIDT MANFRED ,  KLATTE CHRISTOPH ,  KUNZ KURT ,  LEUTNER JOSEF ,  OHLEMACHER JUERGEN ,  KRIMMER HANS-PETER

IPC: C07D251/26

Abstract: Production of alkali(ne earth) metal salts of 2,4-dichloro-6-hydroxy-s-triazine by hydrolysis comprises dosing cyanuric chloride (I) powder or aqueous suspension into an aqueous solution or suspension of 1.2-5 equivalent alkali(ne earth) hydroxide (II)/mole (I) and keeping the pH at 9.5-14 at ≤ 10 degrees C. Production of alkali(ne earth) metal salts of 2,4-dichloro-6-hydroxy-s-triazine by hydrolysis comprises dosing cyanuric chloride (I) powder or aqueous suspension into an aqueous solution or suspension of 1.2-5 equivalent alkali(ne earth) hydroxide (II)/mole (I) and keeping the pH at 9.5-14 at ≤ 10 degrees C. If less than the stoichiometric amount of (II) is present, the rest, including up to 25% excess, is added during and/or after addition of (I) to maintain the pH. Reaction is stopped when the pH no longer changes at the selected temperature.

公开(公告)号：DE19914616A1

公开(公告)日：2000-10-05

申请号：DE19914616

申请日：1999-03-31

Applicant: DEGUSSA

Inventor： SCHMIDT MANFRED ,  LEUTNER JOSEF

IPC: C07D251/28

Abstract: The hydrophilic silica flow improver used with flowable particulate cyanuric chloride of flowability index ≤ 3 is a precipitated silica or a silica gel with an average agglomerate diameter of below 15 microns, as determined by a Coulter Counter An Independent claim is included for the production of cyanuric derivatives by substitution of 1, 2 or 3 Cl atoms in the claimed cyanuric chloride.

公开(公告)号：ID29702A

公开(公告)日：2001-10-04

申请号：ID20000179

申请日：2000-03-09

Applicant: DEGUSSA

Inventor： SCHMIDT MANFRED ,  LEUTNER JOSEF

IPC: C07D251/28

Abstract: The hydrophilic silica flow improver used with flowable particulate cyanuric chloride of flowability index ≤ 3 is a precipitated silica or a silica gel with an average agglomerate diameter of below 15 microns, as determined by a Coulter Counter An Independent claim is included for the production of cyanuric derivatives by substitution of 1, 2 or 3 Cl atoms in the claimed cyanuric chloride.

公开(公告)号：SK133693A3

公开(公告)日：1994-06-08

申请号：SK133693

申请日：1993-11-29

Applicant: DEGUSSA

Inventor： RIEMENSCHNEIDER HERBERT ,  ALT CHRISTIAN ,  CLAUS MARTIN ,  LOROSCH JURGEN ,  LEUTNER JOSEF ,  MONCH HEINZ

IPC: B01J2/04 ,  B01J2/16 ,  C01C3/10

Abstract: The invention relates to new alkali cyanide granules based on sodium cyanide or potassium cyanide and also a process for the preparation thereof. Commercial alkali cyanide granules comprise irregular particles: disadvantages are, in particular, the tendency to form dust and lumps. Alkali cyanide granules of the invention have practically no abrasion and a reduced tendency to form lumps. The granules are characterised by essentially spherical particles, particle diameters in the range from 0.1 to 20 mm, a bulk density above 600 g/dm , an abrasion of less than 1% and a caking index of at most 4. The granules can be prepared by fluidised-bed spray granulation, by an aqueous solution containing an alkali cyanide being sprayed on alkali cyanide nuclei in a fluidised bed and water being evaporated.

公开(公告)号：HRP20000174A2

公开(公告)日：2001-04-30

申请号：HRP20000174

申请日：2000-03-27

Applicant: DEGUSSA

Inventor： LEUTNER JOSEF ,  SCHMIDT MANFRED

IPC: C07D251/28

Abstract: The hydrophilic silica flow improver used with flowable particulate cyanuric chloride of flowability index ≤ 3 is a precipitated silica or a silica gel with an average agglomerate diameter of below 15 microns, as determined by a Coulter Counter An Independent claim is included for the production of cyanuric derivatives by substitution of 1, 2 or 3 Cl atoms in the claimed cyanuric chloride.

公开(公告)号：DE59308248D1

公开(公告)日：1998-04-16

申请号：DE59308248

申请日：1993-11-12

Applicant: DEGUSSA

Inventor： RIEMENSCHNEIDER HERBERT DR ,  ALT CHRISTIAN ,  CLAUS MARTINA ,  LOROESCH JUERGEN DR ,  LEUTNER JOSEF ,  MOENCH HEINZ DR

IPC: B01J2/04 ,  B01J2/16 ,  C01C3/10

Abstract: The invention relates to new alkali cyanide granules based on sodium cyanide or potassium cyanide and also a process for the preparation thereof. Commercial alkali cyanide granules comprise irregular particles: disadvantages are, in particular, the tendency to form dust and lumps. Alkali cyanide granules of the invention have practically no abrasion and a reduced tendency to form lumps. The granules are characterised by essentially spherical particles, particle diameters in the range from 0.1 to 20 mm, a bulk density above 600 g/dm , an abrasion of less than 1% and a caking index of at most 4. The granules can be prepared by fluidised-bed spray granulation, by an aqueous solution containing an alkali cyanide being sprayed on alkali cyanide nuclei in a fluidised bed and water being evaporated.

公开(公告)号：DE4240576C2

公开(公告)日：1996-04-18

申请号：DE4240576

申请日：1992-12-04

Applicant: DEGUSSA

Inventor： RIEMENSCHNEIDER HERBERT DR ,  ALT CHRISTIAN ,  CLAUS MARTINA ,  LOROESCH JUERGEN DR ,  LEUTNER JOSEF ,  MOENCH HEINZ DR

IPC: B01J2/04 ,  B01J2/16 ,  C01C3/10

Abstract: The invention relates to new alkali cyanide granules based on sodium cyanide or potassium cyanide and also a process for the preparation thereof. Commercial alkali cyanide granules comprise irregular particles: disadvantages are, in particular, the tendency to form dust and lumps. Alkali cyanide granules of the invention have practically no abrasion and a reduced tendency to form lumps. The granules are characterised by essentially spherical particles, particle diameters in the range from 0.1 to 20 mm, a bulk density above 600 g/dm , an abrasion of less than 1% and a caking index of at most 4. The granules can be prepared by fluidised-bed spray granulation, by an aqueous solution containing an alkali cyanide being sprayed on alkali cyanide nuclei in a fluidised bed and water being evaporated.

公开(公告)号：CZ9302512A3

公开(公告)日：1994-06-15

申请号：CZ251293

申请日：1993-11-23

Applicant: DEGUSSA

Inventor： RIEMENSCHNEIDER HERBERT DR ,  ALT CHRISTIAN ,  CLAUS MARTIN ,  LOROSCH JURGEN DR ,  LEUTNER JOSEF ,  MONCH HEINZ DR

IPC: B01J2/04 ,  B01J2/16 ,  C01C3/10

CPC classification number: C01C3/10 ,  C01P2004/32 ,  C01P2004/50 ,  C01P2004/61 ,  C01P2006/10 ,  C01P2006/21 ,  C01P2006/80 ,  Y10T428/2982 ,  Y10T428/2991 ,  Y10T428/2993