ES2193053T3 - Metodo para preparar melamina. - Google Patents
Metodo para preparar melamina.Info
- Publication number
- ES2193053T3 ES2193053T3 ES00908112T ES00908112T ES2193053T3 ES 2193053 T3 ES2193053 T3 ES 2193053T3 ES 00908112 T ES00908112 T ES 00908112T ES 00908112 T ES00908112 T ES 00908112T ES 2193053 T3 ES2193053 T3 ES 2193053T3
- Authority
- ES
- Spain
- Prior art keywords
- melamine
- ammonia
- melt
- cooled
- powder
- 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
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)
- Paper (AREA)
- Fertilizers (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Un método para preparar melamina a partir de urea por medio de un proceso a alta presión, caracterizado porque se puede producir melamina de alta pureza a partir de un fundido de melamina que tiene una temperatura entre el punto de fusión de la melamina y 450°C, incorporando suficiente exceso de amoniaco en el fundido de melamina en un depósito de inyección de amoniaco para formar una mezcla gas/líquido de dos fases, teniendo la mezcla gas/líquido una relación de masas gas/líquido de entre 0, 01 y 1, 0, y después de esto pulverizando la mezcla gas/líquido mediante un medio de pulverización en un depósito de expansión para enfriar y solidificar la melamina mediante expansión y evaporación del amoniaco incorporado en el depósito de expansión de presión reducida, incluyendo dicho depósito de expansión una atmósfera de amoniaco que está por encima de la presión atmosférica.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99200675A EP1035117A1 (en) | 1999-03-08 | 1999-03-08 | Method for preparing melamine from urea |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2193053T3 true ES2193053T3 (es) | 2003-11-01 |
Family
ID=8239957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES00908112T Expired - Lifetime ES2193053T3 (es) | 1999-03-08 | 2000-03-02 | Metodo para preparar melamina. |
Country Status (17)
Country | Link |
---|---|
US (1) | US6579980B2 (es) |
EP (2) | EP1035117A1 (es) |
JP (1) | JP2002539116A (es) |
KR (1) | KR100621290B1 (es) |
CN (1) | CN1148359C (es) |
AT (1) | ATE233248T1 (es) |
AU (1) | AU764140B2 (es) |
CA (1) | CA2366585C (es) |
DE (1) | DE60001495T2 (es) |
EA (1) | EA003141B1 (es) |
ES (1) | ES2193053T3 (es) |
ID (1) | ID29842A (es) |
NO (1) | NO319833B1 (es) |
PL (1) | PL201689B1 (es) |
RO (1) | RO121902B1 (es) |
TW (1) | TWI272268B (es) |
WO (1) | WO2000053587A1 (es) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1022764C2 (nl) * | 2003-02-24 | 2004-08-26 | Dsm Nv | Natte quench. |
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 |
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 |
US8563115B2 (en) * | 2008-08-12 | 2013-10-22 | Xerox Corporation | Protective coatings for solid inkjet applications |
US8191992B2 (en) | 2008-12-15 | 2012-06-05 | Xerox Corporation | Protective coatings for solid inkjet applications |
US20170211285A1 (en) * | 2016-01-22 | 2017-07-27 | Hayward Industries, Inc. | Systems and Methods for Providing Network Connectivity and Remote Monitoring, Optimization, and Control of Pool/Spa Equipment |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
AT402294B (de) * | 1994-12-23 | 1997-03-25 | Agrolinz Melamin Gmbh | Verfahren zur herstellung von hochreinem melamin |
GB9511357D0 (en) | 1995-06-06 | 1995-08-02 | Johnson Matthey Plc | Improved antiviral compounds |
US5514796A (en) * | 1995-06-07 | 1996-05-07 | Melamine Chemicals, Inc. | Melamine of improved purity produced by high-pressure, non-catalytic process |
AT403579B (de) * | 1995-12-07 | 1998-03-25 | Agrolinz Melamin Gmbh | Verfahren zur herstellung von hochreinem melamin |
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. |
WO1998052928A1 (en) * | 1997-05-21 | 1998-11-26 | Dsm N.V. | Method for preparing melamine |
ES2195338T3 (es) * | 1997-05-28 | 2003-12-01 | Dsm Ip Assets Bv | Metodo para preparar melamina. |
CA2292597A1 (en) * | 1997-06-02 | 1998-12-10 | Dsm N.V. | Method for preparing melamine |
-
1999
- 1999-03-08 EP EP99200675A patent/EP1035117A1/en not_active Withdrawn
-
2000
- 2000-02-15 TW TW089102536A patent/TWI272268B/zh not_active IP Right Cessation
- 2000-03-02 PL PL351354A patent/PL201689B1/pl not_active IP Right Cessation
- 2000-03-02 WO PCT/NL2000/000129 patent/WO2000053587A1/en active IP Right Grant
- 2000-03-02 EP EP00908112A patent/EP1171429B1/en not_active Expired - Lifetime
- 2000-03-02 KR KR1020017011370A patent/KR100621290B1/ko not_active IP Right Cessation
- 2000-03-02 EA EA200100952A patent/EA003141B1/ru not_active IP Right Cessation
- 2000-03-02 RO ROA200101015A patent/RO121902B1/ro unknown
- 2000-03-02 CN CNB008071705A patent/CN1148359C/zh not_active Expired - Fee Related
- 2000-03-02 AU AU29484/00A patent/AU764140B2/en not_active Ceased
- 2000-03-02 DE DE60001495T patent/DE60001495T2/de not_active Expired - Lifetime
- 2000-03-02 ID IDW00200101944A patent/ID29842A/id unknown
- 2000-03-02 CA CA002366585A patent/CA2366585C/en not_active Expired - Fee Related
- 2000-03-02 JP JP2000604026A patent/JP2002539116A/ja not_active Withdrawn
- 2000-03-02 ES ES00908112T patent/ES2193053T3/es not_active Expired - Lifetime
- 2000-03-02 AT AT00908112T patent/ATE233248T1/de active
-
2001
- 2001-09-06 NO NO20014338A patent/NO319833B1/no not_active IP Right Cessation
- 2001-09-06 US US09/946,558 patent/US6579980B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US6579980B2 (en) | 2003-06-17 |
KR20010108327A (ko) | 2001-12-07 |
PL351354A1 (en) | 2003-04-07 |
AU2948400A (en) | 2000-09-28 |
EA003141B1 (ru) | 2003-02-27 |
KR100621290B1 (ko) | 2006-09-13 |
DE60001495T2 (de) | 2003-12-18 |
EP1035117A1 (en) | 2000-09-13 |
DE60001495D1 (de) | 2003-04-03 |
ID29842A (id) | 2001-10-18 |
NO319833B1 (no) | 2005-09-19 |
ATE233248T1 (de) | 2003-03-15 |
CA2366585C (en) | 2008-10-21 |
CA2366585A1 (en) | 2000-09-14 |
NO20014338L (no) | 2001-10-30 |
EA200100952A1 (ru) | 2002-02-28 |
PL201689B1 (pl) | 2009-04-30 |
CN1148359C (zh) | 2004-05-05 |
JP2002539116A (ja) | 2002-11-19 |
RO121902B1 (ro) | 2008-07-30 |
EP1171429A1 (en) | 2002-01-16 |
CN1349513A (zh) | 2002-05-15 |
WO2000053587A1 (en) | 2000-09-14 |
US20020007061A1 (en) | 2002-01-17 |
EP1171429B1 (en) | 2003-02-26 |
TWI272268B (en) | 2007-02-01 |
AU764140B2 (en) | 2003-08-14 |
NO20014338D0 (no) | 2001-09-06 |
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