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1. WO2004108693 - GRANULAR MELAMINE

Publication Number WO/2004/108693
Publication Date 16.12.2004
International Application No. PCT/NL2004/000399
International Filing Date 03.06.2004
IPC
B01J 2/22 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
2Processes or devices for granulating materials, in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
22by pressing in moulds or between rollers
CPC
B01J 2/22
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
2Processes or devices for granulating materials ; , e.g. fertilisers; in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
22by pressing in moulds or between rollers
C07D 251/56
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
251Heterocyclic compounds containing 1,3,5-triazine rings
02not condensed with other rings
12having three double bonds between ring members or between ring members and non-ring members
26with only hetero atoms directly attached to ring carbon atoms
40Nitrogen atoms
54Three nitrogen atoms
56Preparation of melamine
Y10T 428/2982
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
428Stock material or miscellaneous articles
29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
2982Particulate matter [e.g., sphere, flake, etc.]
Applicants
  • DSM IP ASSETS B.V. [NL]/[NL] (AllExceptUS)
  • VAN DIJK, Saskia, Ingeborg [NL]/[NL] (UsOnly)
  • VONK, Pieter [NL]/[NL] (UsOnly)
Inventors
  • VAN DIJK, Saskia, Ingeborg
  • VONK, Pieter
Agents
  • SCHELTUS, I.
Priority Data
102361706.06.2003NL
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) GRANULAR MELAMINE
(FR) MELAMINE GRANULAIRE
Abstract
(EN) The invention relates to a granular melamine, wherein the D99 lies between 300µm and 1800µm. The invention further relates to a process for compacting melamine comprising: - a roll pressing step wherein a melamine powder is pressed into compacted melamine; - a crushing step wherein the compacted melamine is crushed into granular melamine; - a coarse screening step to which the granular melamine is supplied, wherein particles greater than a desired particle size are separated from the granular melamine, wherein the coarse screening step is carried out in such a fashion that the granular melamine has a D99 lying between 300µm and 1800µm.
(FR) Cette invention se rapporte à un mélamine granulaire, dont la valeur D99 est comprise entre 300µm et 1800µm. cette invention concerne en outre un procédé de compactage de mélamine, qui comprend : une étape de pressage au rouleau, dans laquelle une poudre de mélamine est compressée jusqu'à former de la mélamine compactée ; une étape de broyage, dans laquelle le mélamine compactée est broyée pour former une mélamine granulaire ; et une étape de tamisage grossier, à laquelle est soumise la mélamine granulaire et dans laquelle les particules ayant une taille supérieure à la taille souhaitée sont séparées de la mélamine granulaire, cette étape de tamisage grossier étant effectuée de telle sorte que la mélamine granulaire possède une valeur D99 comprise entre 300µm et 1800µm.
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