EP 0368137 A1 19900516 - Method for the preparation of high-density zeolite granules.

Title (en)

Method for the preparation of high-density zeolite granules.

Title (de)

Verfahren zur Herstellung zeolithhaltiger Granulate hoher Dichte.

Title (fr)

Méthode de préparation de granules en zéolite de haute densité.

Publication

EP 0368137 A1 19900516 (DE)

Application

EP 89120266 A 19891102

Priority

DE 3838086 A 19881110

Abstract (en)

In a process for producing granules with high apparent density, containing fine crystalline zeolite and salts of (co)polymeric carboxylic acids, in particular acrylic acid-maleic acid copolymers, a dried preliminary mixture of the zeolite and polycarboxylate is prepared, converted to granules with simultaneous addition of water, and dried. The granules contain 60 to 80 wt.% of zeolite (calculated on the anhydrous basis), 2 to 15 wt.% of polycarboxylate and 14 to 25 wt.% of water, including the water bound to the zeolite.

Abstract (de)

Granulate mit hohem Schüttgewicht, enthaltend feinkristallinen Zeolith und Salze (co-)polymerer Carbonsäuren, insbesondere Acrylsäure-Maleinsäure-Copolymere, werden in der Weise hergestellt, daß man zunächst ein trockenes Vorgemisch des Zeoliths und des Polycarboxylates herstellt, das anschließend unter Zusatz von Wasser in ein Granulat überführt und getrocknet wird. Die Granulate enthalten 60 bis 80 Gew.-% Zeolith (wasserfrei gerechnet), 2 bis 15 Gew.-% Polycarboxylat und 14 bis 25 Gew.-% Wasser einschließlich des an Zeolith gebundenen Wassers.

IPC 1-7

B01J 20/18; C11D 3/12; C11D 3/37

IPC 8 full level

B01J 20/18 (2006.01); C01B 39/14 (2006.01); C11D 3/12 (2006.01); C11D 3/37 (2006.01); C11D 11/00 (2006.01); C11D 17/06 (2006.01)

CPC (source: EP KR)

C11D 3/00 (2013.01 - KR); C11D 3/128 (2013.01 - EP); C11D 3/3761 (2013.01 - EP); C11D 17/065 (2013.01 - EP)

Citation (search report)

[A] EP 0243908 A2 19871104 - HENKEL KGAA [DE]
[AD] DE 3316513 A1 19841108 - BENCKISER GMBH JOH A [DE]
[A] DE 2736903 A1 19780223 - COLGATE PALMOLIVE CO

Designated contracting state (EPC)

DOCDB simple family (publication)

EP 0368137 A1 19900516; EP 0368137 B1 19940105; DE 3838086 A1 19900517; DE 58906639 D1 19940217; DK 86891 A 19910708; DK 86891 D0 19910508; EP 0442923 A1 19910828; ES 2047091 T3 19940216; JP H04501730 A 19920326; KR 900701992 A 19901205; PT 92223 A 19900531; PT 92223 B 19950706; TR 24018 A 19910201; WO 9005175 A1 19900517

DOCDB simple family (application)

EP 89120266 A 19891102; DE 3838086 A 19881110; DE 58906639 T 19891102; DK 86891 A 19910508; EP 8901312 W 19891102; EP 89912426 A 19891102; ES 89120266 T 19891102; JP 51151089 A 19891102; KR 900701431 A 19900705; PT 9222389 A 19891107; TR 95489 A 19891110