ES2195078T3 - Metodo para la preparacion de melamina. - Google Patents

Metodo para la preparacion de melamina.

Info

Publication number
ES2195078T3
ES2195078T3 ES97201380T ES97201380T ES2195078T3 ES 2195078 T3 ES2195078 T3 ES 2195078T3 ES 97201380 T ES97201380 T ES 97201380T ES 97201380 T ES97201380 T ES 97201380T ES 2195078 T3 ES2195078 T3 ES 2195078T3
Authority
ES
Spain
Prior art keywords
melamine
preparation
mixture
reaction product
liquid
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
ES97201380T
Other languages
English (en)
Inventor
Wijck Julius Gerardus Theo Van
Haan Andre Banier De
Andreas Johannes Biermans
Van Rudolf Hardeveld
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 ES2195078T3 publication Critical patent/ES2195078T3/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
    • 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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Phenolic Resins Or Amino Resins (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

LA INVENCION SE REFIERE A UN METODO DE PREPARACION DE MELAMINA, A PARTIR DE UREA, EN EL CUAL LA MELAMINA SE RECUPERA A PARTIR DE UN PRODUCTO DE REACCION DE PIROLISIS DE UREA, QUE CONTIENE MELAMINA, MEDIANTE LA COMBINACION DE DICHO PRODUCTO DE REACCION CON UN MEDIO LIQUIDO, PRODUCIENDO UNA MEZCLA LIQUIDA. A CONTINUACION, SI ES NECESARIO, SE INCREMENTA LA PRESION DE LA MEZCLA, A CONTINUACION DE LO CUAL, LA MEZCLA SE EXPANDE, TRAS LO CUAL EL MEDIO SE EVAPORA Y LA MELAMINA SOLIDA, SE OBTIENE COMO UN MATERIAL SECO. PREFERIBLEMENTE, SE UTILIZA AMONIACO COMO MEDIO LIQUIDO.
ES97201380T 1996-05-14 1997-05-07 Metodo para la preparacion de melamina. Expired - Lifetime ES2195078T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1003105A NL1003105C2 (nl) 1996-05-14 1996-05-14 Werkwijze voor de bereiding van melamine.

Publications (1)

Publication Number Publication Date
ES2195078T3 true ES2195078T3 (es) 2003-12-01

Family

ID=19762851

Family Applications (1)

Application Number Title Priority Date Filing Date
ES97201380T Expired - Lifetime ES2195078T3 (es) 1996-05-14 1997-05-07 Metodo para la preparacion de melamina.

Country Status (8)

Country Link
EP (1) EP0808836B1 (es)
JP (1) JPH1045730A (es)
CN (2) CN1065239C (es)
AT (1) ATE234822T1 (es)
DE (1) DE69719850T2 (es)
ES (1) ES2195078T3 (es)
ID (1) ID16895A (es)
NL (1) NL1003105C2 (es)

Families Citing this family (19)

* 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
NL1006095C2 (nl) * 1997-05-21 1998-11-25 Dsm Nv Werkwijze voor het bereiden van melamine.
DE69813545T2 (de) 1997-05-21 2004-04-08 Dsm N.V. Verfahren zur herstellung von melamin
CN1130353C (zh) * 1997-05-28 2003-12-10 Dsm有限公司 制备蜜胺的方法
NL1006147C2 (nl) * 1997-05-28 1998-12-01 Dsm Nv Werkwijze voor het bereiden van melamine.
NL1006192C2 (nl) 1997-06-02 1998-12-03 Dsm Nv Werkwijze voor het bereiden van melamine.
NL1006191C2 (nl) * 1997-06-02 1998-12-03 Dsm Nv Kristallijn melamine.
EP0986547A1 (en) * 1997-06-02 2000-03-22 Dsm N.V. Method for preparing melamine
ES2283056T3 (es) * 1997-06-02 2007-10-16 Dsm Ip Assets B.V. Melamina cristalina.
JPH11209353A (ja) * 1998-01-23 1999-08-03 Nissan Chem Ind Ltd メラミン工程廃液からのメラミン、アンメリン及びアンメリドの回収方法
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
CA2361941A1 (en) 1999-03-15 2000-09-21 Agrolinz Melamin Gmbh Method for producing solid melamine
EP1054006A1 (en) * 1999-05-20 2000-11-22 Dsm N.V. Method for preparing melamine
NL1013217C2 (nl) * 1999-10-05 2001-04-06 Dsm Nv Werkwijze voor de bereiding van melamine.
AT409489B (de) 2000-10-20 2002-08-26 Agrolinz Melamin Gmbh Verfahren zur herstellung von melamin
NL1018283C2 (nl) * 2001-06-13 2002-12-19 Dsm Nv Werkwijze voor het in contact brengen van gesmolten ureum met een gasstroom.
DE10326827A1 (de) 2003-06-12 2004-12-30 Ami-Agrolinz Melamine International Gmbh Verfahren und Vorrichtung zur Herstellung von Melamin im einphasigen Rohrreaktor
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 (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
IT1261841B (it) * 1993-08-23 1996-06-03 Conser Spa Procedimento per la produzione di melammina ad alta purezza.
AT402294B (de) * 1994-12-23 1997-03-25 Agrolinz Melamin Gmbh Verfahren zur herstellung von hochreinem melamin
AT402296B (de) * 1995-02-03 1997-03-25 Agrolinz Melamin Gmbh Verfahren zur reinigung von 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
EP0808836B1 (en) 2003-03-19
CN1065239C (zh) 2001-05-02
ID16895A (id) 1997-11-20
CN1142921C (zh) 2004-03-24
NL1003105C2 (nl) 1997-11-18
DE69719850T2 (de) 2003-12-24
JPH1045730A (ja) 1998-02-17
CN1170720A (zh) 1998-01-21
DE69719850D1 (de) 2003-04-24
ATE234822T1 (de) 2003-04-15
CN1273243A (zh) 2000-11-15
EP0808836A1 (en) 1997-11-26

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