ES2195143T3 - Metodo para la preparacion de melamina. - Google Patents

Metodo para la preparacion de melamina.

Info

Publication number
ES2195143T3
ES2195143T3 ES97926281T ES97926281T ES2195143T3 ES 2195143 T3 ES2195143 T3 ES 2195143T3 ES 97926281 T ES97926281 T ES 97926281T ES 97926281 T ES97926281 T ES 97926281T ES 2195143 T3 ES2195143 T3 ES 2195143T3
Authority
ES
Spain
Prior art keywords
melamine
ammonia
preparation
melt
cooled
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.)
Expired - Lifetime
Application number
ES97926281T
Other languages
English (en)
Inventor
Wijck Julius Gerardus Theo Van
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 IP Assets BV
Original Assignee
DSM IP Assets 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
Application filed by DSM IP Assets BV filed Critical DSM IP Assets BV
Application granted granted Critical
Publication of ES2195143T3 publication Critical patent/ES2195143T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

LA INVENCION SE REFIERE A UN PROCEDIMIENTO PARA LA PREPARACION DE MELAMINA, A PARTIR DE UREA, A TRAVES DE UN PROCESO A ALTA PRESION EN LA QUE SE OBTIENE MELAMINA SOLIDA POR TRANSFERENCIA DE LA MASA FUNDIDA DE MELAMINA QUE SALE DEL REACTOR DE MELAMINA A UN RECIPIENTE DE ENFRIAMIENTO, EN DONDE LA MELAMINA FUNDIDA SE ENFRIA POR MEDIO DE AMONIACO LIQUIDO. LA MELAMINA FUNDIDA SE ENFRIA A UNA TEMPERATURA DE ENTRE 50 Y 350 °C APROXIMADAMENTE POR MEDIO DE AMONIACO LIQUIDO, FORMANDOSE UNA MEZCLA QUE COMPRENDE AMONIACO Y MELAMINA, DESPUES DE LO CUAL, LA TOTALIDAD O PARTE DE ESTA MEZCLA SE TRANSFIERE A UN RECIPIENTE DE EXPANSION, PONIENDOSE LA COMPOSICION EN CONTACTO CON AMONIACO DURANTE ALREDEDOR DE 1 MINUTO HASTA UNAS 5 HORAS, TRAS LO CUAL SE LIBERA DE LA COMPOSICION LA MELAMINA SOLIDA.
ES97926281T 1996-06-13 1997-06-11 Metodo para la preparacion de melamina. Expired - Lifetime ES2195143T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1003328A NL1003328C2 (nl) 1996-06-13 1996-06-13 Werkwijze voor het bereiden van melamine.

Publications (1)

Publication Number Publication Date
ES2195143T3 true ES2195143T3 (es) 2003-12-01

Family

ID=19763010

Family Applications (1)

Application Number Title Priority Date Filing Date
ES97926281T Expired - Lifetime ES2195143T3 (es) 1996-06-13 1997-06-11 Metodo para la preparacion de melamina.

Country Status (12)

Country Link
US (1) US6245909B1 (es)
EP (1) EP0920420B1 (es)
JP (1) JP2000511926A (es)
CN (1) CN1165530C (es)
AT (1) ATE234823T1 (es)
AU (1) AU720041B2 (es)
DE (1) DE69719996T2 (es)
ES (1) ES2195143T3 (es)
NL (1) NL1003328C2 (es)
NO (1) NO311721B1 (es)
PL (1) PL190787B1 (es)
WO (1) WO1997047609A1 (es)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6380385B1 (en) 1995-12-07 2002-04-30 Agrolinz Melanin Gmbh Process for the preparation of pure melamine
KR100495262B1 (ko) 1997-05-21 2005-06-14 코닌클리즈케 디에스엠 엔.브이. 멜라민의 제조방법
CN1130353C (zh) 1997-05-28 2003-12-10 Dsm有限公司 制备蜜胺的方法
WO1998055466A1 (en) * 1997-06-02 1998-12-10 Dsm N.V. Method for preparing melamine
NL1006192C2 (nl) 1997-06-02 1998-12-03 Dsm Nv Werkwijze voor het bereiden van melamine.
NL1008571C2 (nl) * 1998-03-12 1999-07-28 Dsm Nv Kristallijn melamine.
EP1035117A1 (en) * 1999-03-08 2000-09-13 Dsm N.V. Method for preparing melamine from urea
KR20020000220A (ko) * 1999-03-15 2002-01-05 갈러 롤란트, 가이쓸러 디트프리트 고체 멜라민의 제조방법
EP1138676A1 (en) * 2000-03-27 2001-10-04 Casale Chemicals SA Process for producing melamine at high pureness
DE10030453B4 (de) * 2000-06-21 2007-07-12 Faramarz Bairamijamal Verfahren zur Herstellung von hoch reinem Melamin nach trockener Aufbereitung
AT410793B (de) * 2000-12-27 2003-07-25 Agrolinz Melamin Gmbh Verfahren zur herstellung von melamin
WO2003045538A1 (de) * 2001-11-16 2003-06-05 Ami - Agrolinz Melamine International Gmbh Verfahren zur reinigung von offgasen einer melaminanlage
ITMI20021026A1 (it) * 2002-05-14 2003-11-14 Eurotecnica Dev & Licensing S Processo di produzione di melammina da urea e particolarmente per ottenere off-gas privi di melammina nello stadio di prima separazione
CN115944942B (zh) * 2022-12-06 2024-04-12 四川金象赛瑞化工股份有限公司 一种氰胺类物质的制备方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166294A (en) * 1961-05-01 1965-01-19 Ford Motor Co Butterfly valve
CA1220476A (en) * 1984-01-05 1987-04-14 David E. Best Anhydrous high-pressure melamine synthesis
US4565867A (en) * 1984-01-05 1986-01-21 Melamine Chemicals, Inc. Anhydrous high-pressure melamine synthesis
AT402294B (de) * 1994-12-23 1997-03-25 Agrolinz Melamin Gmbh Verfahren zur herstellung von hochreinem melamin
AT402295B (de) * 1994-12-23 1997-03-25 Agrolinz Melamin Gmbh Verfahren zur reinigung von melamin
AT402296B (de) * 1995-02-03 1997-03-25 Agrolinz Melamin Gmbh Verfahren zur reinigung von melamin
US5514797A (en) * 1995-06-07 1996-05-07 Melamine Chemicals, Inc. Method for increasing purity of melamine
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
JP2000511926A (ja) 2000-09-12
EP0920420B1 (en) 2003-03-19
CN1227549A (zh) 1999-09-01
CN1165530C (zh) 2004-09-08
ATE234823T1 (de) 2003-04-15
PL330866A1 (en) 1999-06-07
NO985744L (no) 1999-01-29
EP0920420A1 (en) 1999-06-09
PL190787B1 (pl) 2006-01-31
DE69719996D1 (de) 2003-04-24
NO311721B1 (no) 2002-01-14
DE69719996T2 (de) 2004-01-08
NL1003328C2 (nl) 1997-12-17
WO1997047609A1 (en) 1997-12-18
AU3108597A (en) 1998-01-07
US6245909B1 (en) 2001-06-12
AU720041B2 (en) 2000-05-25
NO985744D0 (no) 1998-12-08

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