DE69620298D1 - Durch nichtkatalytisches, unter Hochdruck arbeitendes Verfahren hergestelltes Melamin von verbesserter Reinheit - Google Patents

Durch nichtkatalytisches, unter Hochdruck arbeitendes Verfahren hergestelltes Melamin von verbesserter Reinheit

Info

Publication number
DE69620298D1
DE69620298D1 DE69620298T DE69620298T DE69620298D1 DE 69620298 D1 DE69620298 D1 DE 69620298D1 DE 69620298 T DE69620298 T DE 69620298T DE 69620298 T DE69620298 T DE 69620298T DE 69620298 D1 DE69620298 D1 DE 69620298D1
Authority
DE
Germany
Prior art keywords
melamine
catalytic
high pressure
pressure process
improved purity
Prior art date
Legal status (The legal status 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 status listed.)
Revoked
Application number
DE69620298T
Other languages
English (en)
Other versions
DE69620298T2 (de
Inventor
David Best
Amit Gupta
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DSM Melamine BV
Original Assignee
DSM Melamine BV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23898467&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69620298(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by DSM Melamine BV filed Critical DSM Melamine BV
Application granted granted Critical
Publication of DE69620298D1 publication Critical patent/DE69620298D1/de
Publication of DE69620298T2 publication Critical patent/DE69620298T2/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • 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
    • C07D251/56—Preparation of melamine
    • C07D251/60—Preparation of melamine from urea or from carbon dioxide and ammonia

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Phenolic Resins Or Amino Resins (AREA)
  • Catalysts (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
DE69620298T 1995-06-07 1996-05-23 Durch nichtkatalytisches, unter Hochdruck arbeitendes Verfahren hergestelltes Melamin von verbesserter Reinheit Revoked DE69620298T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/478,088 US5514796A (en) 1995-06-07 1995-06-07 Melamine of improved purity produced by high-pressure, non-catalytic process

Publications (2)

Publication Number Publication Date
DE69620298D1 true DE69620298D1 (de) 2002-05-08
DE69620298T2 DE69620298T2 (de) 2002-11-28

Family

ID=23898467

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69620298T Revoked DE69620298T2 (de) 1995-06-07 1996-05-23 Durch nichtkatalytisches, unter Hochdruck arbeitendes Verfahren hergestelltes Melamin von verbesserter Reinheit

Country Status (19)

Country Link
US (1) US5514796A (de)
EP (1) EP0747366B1 (de)
JP (1) JPH0912559A (de)
KR (1) KR100472913B1 (de)
AT (1) ATE215534T1 (de)
AU (1) AU706404B2 (de)
BR (1) BR9602673A (de)
CA (1) CA2177521A1 (de)
DE (1) DE69620298T2 (de)
EG (1) EG22590A (de)
ES (1) ES2175034T3 (de)
NO (1) NO307338B1 (de)
NZ (1) NZ286589A (de)
PL (1) PL185494B1 (de)
RO (1) RO119194B1 (de)
RU (1) RU2161608C2 (de)
TW (1) TW334429B (de)
UA (1) UA46722C2 (de)
ZA (1) ZA963945B (de)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT402294B (de) * 1994-12-23 1997-03-25 Agrolinz Melamin Gmbh Verfahren zur herstellung von hochreinem melamin
AT403579B (de) * 1995-12-07 1998-03-25 Agrolinz Melamin Gmbh Verfahren zur herstellung von hochreinem melamin
US6380385B1 (en) 1995-12-07 2002-04-30 Agrolinz Melanin Gmbh Process for the preparation of pure melamine
NL1002669C2 (nl) * 1996-03-21 1997-09-23 Dsm Nv Werkwijze voor de bereiding van melamine.
NL1003105C2 (nl) * 1996-05-14 1997-11-18 Dsm Nv Werkwijze voor de bereiding van melamine.
NL1003328C2 (nl) * 1996-06-13 1997-12-17 Dsm Nv Werkwijze voor het bereiden van melamine.
NL1003709C2 (nl) * 1996-07-30 1998-02-05 Dsm Nv Werkwijze voor het bereiden van melamine.
NL1003923C2 (nl) * 1996-08-30 1998-03-04 Dsm Nv Werkwijze voor de bereiding van ureum.
NL1004814C2 (nl) * 1996-12-18 1998-06-19 Dsm Nv Werkwijze voor het bereiden van melamine.
WO1998027071A1 (en) * 1996-12-16 1998-06-25 Dsm N.V. Method for the preparation of melamine
NL1006095C2 (nl) * 1997-05-21 1998-11-25 Dsm Nv Werkwijze voor het bereiden van melamine.
AU728549B2 (en) 1997-05-21 2001-01-11 Dsm Ip Assets B.V. Method for preparing melamine
KR100495264B1 (ko) 1997-05-28 2005-06-14 코닌클리즈케 디에스엠 엔.브이. 멜라민의 제조방법
NL1006147C2 (nl) * 1997-05-28 1998-12-01 Dsm Nv Werkwijze voor het bereiden van melamine.
DE69837432T2 (de) * 1997-06-02 2007-12-13 Dsm Ip Assets B.V. Kristallines melamin
NL1006191C2 (nl) * 1997-06-02 1998-12-03 Dsm Nv Kristallijn melamine.
NL1006192C2 (nl) * 1997-06-02 1998-12-03 Dsm Nv Werkwijze voor het bereiden van melamine.
CA2292597A1 (en) * 1997-06-02 1998-12-10 Dsm N.V. Method for preparing melamine
US6355797B2 (en) 1998-01-30 2002-03-12 Agrolinz Melamin Gmbh Process for cooling melamine
NL1008571C2 (nl) * 1998-03-12 1999-07-28 Dsm Nv Kristallijn melamine.
US6303781B1 (en) 1998-05-12 2001-10-16 Dsm N.V. Method for preparing melamine
GB2337259B (en) * 1998-05-12 2000-03-29 Dsm Nv Method for preparing melamine
EP1035117A1 (de) * 1999-03-08 2000-09-13 Dsm N.V. Verfahren zur Herstellung von Melamin aus Harnstoff
NL1013456C2 (nl) * 1999-11-02 2001-05-03 Dsm Nv Kristallijn melamine en de toepassing in aminoformaldehydeharsen.
EP1138676A1 (de) * 2000-03-27 2001-10-04 Casale Chemicals SA Verfahren zur Herstellung von Melamin hoher Reinheit
AT410210B (de) 2000-08-07 2003-03-25 Agrolinz Melamin Gmbh Verfahren zur herstellung von melamin
EP1188751A1 (de) * 2000-09-13 2002-03-20 Casale Chemicals SA Verfahren zur Herstellung von von hochreinem Melamin aus Harnstoff
EP1461139B1 (de) * 2001-11-16 2005-08-31 AMI Agrolinz Melamine International GmbH Verfahren zur reinigung von offgasen einer melaminanlage
NL1022764C2 (nl) * 2003-02-24 2004-08-26 Dsm Nv Natte quench.
DE10326827A1 (de) 2003-06-12 2004-12-30 Ami-Agrolinz Melamine International Gmbh Verfahren und Vorrichtung zur Herstellung von Melamin im einphasigen Rohrreaktor
DE502004003874D1 (de) * 2004-01-17 2007-07-05 Casale Chemicals Sa Verfahren zur schonenden Abkühlung und Kristallisation von Melamin aus einer Melaminschmelze oder aus der Gasphase
DE102005028665A1 (de) * 2005-06-15 2007-01-04 Ami-Agrolinz Melamine International Gmbh Verfahren zur Reinigung von Abwässern aus Melaminanlagen
US7153962B1 (en) 2005-07-12 2006-12-26 Casale Chemicals S.A. Process for gently cooling and crystallizing melamine from a melamine melt or from the gaseous phase
DE102006055571B4 (de) * 2006-11-20 2018-09-27 Urea Casale S.A. Verfahren und Vorrichtung zur Aufarbeitung einer Melaminschmelze
CN101863848B (zh) * 2010-05-28 2012-07-18 四川金象赛瑞化工股份有限公司 用于制备三聚氰胺的系统及方法
RU2495875C1 (ru) * 2012-10-11 2013-10-20 Открытое Акционерное Общество "Научно-Исследовательский И Проектный Институт Карбамида И Продуктов Органического Синтеза" (Оао Ниик) Способ охлаждения расплава меламина
EP2907567A1 (de) * 2014-02-18 2015-08-19 Casale Sa Kombinierter Reaktor für Hochdrucksynthese von Melamin
CN114452897A (zh) * 2022-01-06 2022-05-10 四川金象赛瑞化工股份有限公司 一种尿素加料装置、加料方法及三聚氰胺生产装置和方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU184277B (en) * 1979-05-03 1984-07-30 Stamicarbon Process for preparing melamine
IE57911B1 (en) * 1984-01-05 1993-05-19 Melamine Chemicals Inc Production of melamine
US4565867A (en) * 1984-01-05 1986-01-21 Melamine Chemicals, Inc. Anhydrous high-pressure melamine synthesis
FI96028C (fi) * 1993-07-01 1996-04-25 Kemira Oy Menetelmä melamiinin valmistamiseksi

Also Published As

Publication number Publication date
RO119194B1 (ro) 2004-05-28
DE69620298T2 (de) 2002-11-28
NO962339L (no) 1996-12-09
ZA963945B (en) 1996-12-10
EP0747366A2 (de) 1996-12-11
AU706404B2 (en) 1999-06-17
ATE215534T1 (de) 2002-04-15
KR100472913B1 (ko) 2005-08-17
CA2177521A1 (en) 1996-12-08
AU5473296A (en) 1996-12-19
EP0747366A3 (de) 1999-02-10
BR9602673A (pt) 1998-11-10
PL185494B1 (pl) 2003-05-30
NO962339D0 (no) 1996-06-05
JPH0912559A (ja) 1997-01-14
RU2161608C2 (ru) 2001-01-10
KR970001336A (ko) 1997-01-24
EP0747366B1 (de) 2002-04-03
EG22590A (en) 2003-04-30
PL314673A1 (en) 1996-12-09
US5514796A (en) 1996-05-07
TW334429B (en) 1998-06-21
ES2175034T3 (es) 2002-11-16
UA46722C2 (uk) 2002-06-17
NO307338B1 (no) 2000-03-20
NZ286589A (en) 1998-04-27

Similar Documents

Publication Publication Date Title
DE69620298D1 (de) Durch nichtkatalytisches, unter Hochdruck arbeitendes Verfahren hergestelltes Melamin von verbesserter Reinheit
TW341567B (en) Process for the preparation of pure malamine
DE69719850T2 (de) Verfahren zur Herstellung von Melamin
ZA988922B (en) Process for the synthesis of high-grade chloramine
EA200100537A1 (ru) Способ получения чистого меламина
ATE115120T1 (de) Verfahren zur herstellung von harnstoff mit hoher energieausbeute.
TW372984B (en) Preparation of biuret-containing polyisocyanates
EP0648747A4 (de) Neue zwischenprodukte zur synthese und produktion von aminosäure derivaten.
GB1266363A (de)
BG105099A (en) Process for the preparation of urea
TW334350B (en) The producing method for ultra-filter Alumina tube filters
GB1309275A (en) Synthesis of urea from melamine synthesis waste gas
KR850000700B1 (en) Urea production method
ATE219045T1 (de) Verfahren zur herstellung von n,n,n',n'-tetra-(2- hydroxyethyl)ethylendiamin
HK1027560A1 (en) Method for producing 1,3-disubstituted 2-nitroguanidines
ATE180239T1 (de) Verfahren zum stabilisieren von alkalipercarbonatteilchen,durch das verfahren erhaltene teilchen, sowie deren verwendung in wasch- und bleichzusammensetzungen
GB1509323A (en) Production of 3,6-bis-(2-methylcermaptoethyl)-2,5-piperazindione
PT781272E (pt) Sintese de guanidinas penta-substituidas
SU1334658A1 (ru) Способ получения м-хлордифенилметилмочевины
IT1263007B (it) Procedimento per l'integrazione della produzione di urea e melammina che utilizza il riciclo di una soluzione di carbammato di ammonio ed ammoniaca dall'impianto urea all'impianto melammina.
HUT60243A (en) Process for producing 4,4'-dinitrostilbene-2,2'-disulfonic acid derivatives
UA8070C2 (uk) Установка для гідролізу та десорбції аміачної води у виробництві сечовини

Legal Events

Date Code Title Description
8363 Opposition against the patent
8331 Complete revocation