BR0113799A - Processo para produção de melamina de alta pureza a partir de uréia - Google Patents

Processo para produção de melamina de alta pureza a partir de uréia

Info

Publication number
BR0113799A
BR0113799A BR0113799-9A BR0113799A BR0113799A BR 0113799 A BR0113799 A BR 0113799A BR 0113799 A BR0113799 A BR 0113799A BR 0113799 A BR0113799 A BR 0113799A
Authority
BR
Brazil
Prior art keywords
melamine
urea
high purity
producing high
purity melamine
Prior art date
Application number
BR0113799-9A
Other languages
English (en)
Inventor
Willi Ripperger
Original Assignee
Casale Chemicals Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Casale Chemicals Sa filed Critical Casale Chemicals Sa
Publication of BR0113799A publication Critical patent/BR0113799A/pt

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/0005—Catalytic processes under superatmospheric pressure
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
    • C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
    • C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
    • C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
    • C07D251/40—Nitrogen atoms
    • C07D251/54—Three nitrogen atoms
    • C07D251/62—Purification of melamine

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

"PROCESSO PARA PRODUçãO DE MELAMINA DE ALTA PUREZA A PARTIR DE URéIA". A presente invenção se refere a um método para purificação de melamina, que contém impurezas do tipo ureído-melamina, oxotriazinas, melam, melem, caracterizado por compreender a etapa de colocar em contato, sob uma temperatura compreendida entre 340<198>C e 410<198>C e uma pressão compreendida entre 8 e 17 MPa, um material fundido de melamina com um leito de um catalisador, obtendo, assim, um produto de melamina com uma pureza de pelo menos 99%.
BR0113799-9A 2000-09-13 2001-09-06 Processo para produção de melamina de alta pureza a partir de uréia BR0113799A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP00119891A EP1188751A1 (en) 2000-09-13 2000-09-13 Process for the production of high purity melamine from urea
PCT/EP2001/010279 WO2002022589A1 (en) 2000-09-13 2001-09-06 Process for the production of high purity melamine from urea

Publications (1)

Publication Number Publication Date
BR0113799A true BR0113799A (pt) 2003-07-08

Family

ID=8169821

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0113799-9A BR0113799A (pt) 2000-09-13 2001-09-06 Processo para produção de melamina de alta pureza a partir de uréia

Country Status (10)

Country Link
US (1) US6858730B2 (pt)
EP (2) EP1188751A1 (pt)
CN (1) CN1197850C (pt)
AU (1) AU2002213885A1 (pt)
BR (1) BR0113799A (pt)
CA (1) CA2421275A1 (pt)
RU (1) RU2288916C2 (pt)
SA (1) SA02220652B1 (pt)
UA (1) UA74389C2 (pt)
WO (1) WO2002022589A1 (pt)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030028020A1 (en) * 2001-07-27 2003-02-06 Gupta Ram B. Process for the synthesis of high purity melamine
FR2852011B1 (fr) * 2003-03-07 2006-07-07 Procede de fabrication de la melamine a partir de l'acide cyanurique et application a la purification de la melamine contenant de l'acide cyanurique comme impurete
CA2543820C (en) * 2003-11-07 2012-07-10 Chiron Corporation Methods for synthesizing quinolinone compounds
JP2007517818A (ja) * 2004-01-17 2007-07-05 カサーレ ケミカルズ エス．エー． メラミン収率を改善する触媒メラミン製造方法
CN100388972C (zh) * 2006-05-16 2008-05-21 梁振玉 三聚氰胺生产用氧化铝催化剂的生产方法
EP2098516A1 (en) * 2008-03-04 2009-09-09 Urea Casale S.A. Process for the production of high purity melamine from urea
CN105903410A (zh) * 2016-06-12 2016-08-31 山东省舜天化工集团有限公司 一种三聚氰胺生产中尿素熔融的方法
CN112495452B (zh) * 2020-12-02 2023-03-14 安徽金禾实业股份有限公司 一种流化床反应器催化剂活化方法
CN114887657B (zh) * 2022-06-10 2024-01-26 宁波中科远东催化工程技术有限公司 一种合成三聚氰胺的催化剂及其制备方法
CN115181070A (zh) * 2022-08-10 2022-10-14 宁波中科远东催化工程技术有限公司 一种生产三聚氰胺的方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1174848A (en) * 1967-12-15 1969-12-17 Chemical Construction Corp Process for the Synthesis of Melamine
AT402294B (de) * 1994-12-23 1997-03-25 Agrolinz Melamin Gmbh Verfahren zur herstellung von hochreinem melamin
US5514796A (en) * 1995-06-07 1996-05-07 Melamine Chemicals, Inc. Melamine of improved purity produced by high-pressure, non-catalytic process

Also Published As

Publication number Publication date
EP1317435A1 (en) 2003-06-11
AU2002213885A1 (en) 2002-03-26
US20040010144A1 (en) 2004-01-15
CN1197850C (zh) 2005-04-20
CA2421275A1 (en) 2002-03-21
US6858730B2 (en) 2005-02-22
WO2002022589A1 (en) 2002-03-21
EP1317435B1 (en) 2012-07-11
CN1455774A (zh) 2003-11-12
UA74389C2 (uk) 2005-12-15
EP1188751A1 (en) 2002-03-20
SA02220652B1 (ar) 2006-12-17
RU2288916C2 (ru) 2006-12-10

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Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]