AR000529A1 - Procedimiento para preparar melamina de alta pureza - Google Patents
Procedimiento para preparar melamina de alta purezaInfo
- Publication number
- AR000529A1 AR000529A1 AR33477995A AR33477995A AR000529A1 AR 000529 A1 AR000529 A1 AR 000529A1 AR 33477995 A AR33477995 A AR 33477995A AR 33477995 A AR33477995 A AR 33477995A AR 000529 A1 AR000529 A1 AR 000529A1
- Authority
- AR
- Argentina
- Prior art keywords
- melamine
- high purity
- temperature
- ammonia
- bar
- Prior art date
Links
- 229920000877 Melamine resin Polymers 0.000 title abstract 8
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 title abstract 8
- 238000000034 method Methods 0.000 title abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 8
- 229910021529 ammonia Inorganic materials 0.000 abstract 3
- 238000001816 cooling Methods 0.000 abstract 3
- 239000007788 liquid Substances 0.000 abstract 2
- 230000005587 bubbling Effects 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- YSRVJVDFHZYRPA-UHFFFAOYSA-N melem Chemical compound NC1=NC(N23)=NC(N)=NC2=NC(N)=NC3=N1 YSRVJVDFHZYRPA-UHFFFAOYSA-N 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 238000000746 purification Methods 0.000 abstract 1
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)
Abstract
El invento se refiere a un procedimiento para preparar melamina de alta pureza, en el cual se lleva a cabo un tratamiento ulterior de la melamina queconsiste en las etapas siguientes: a) se separa la mezcla gaseosa de NH3/CO2 de la melaminalíqui da, eventualmente b) se reduce el CO2 disuelto en lamelamina líquida por burbujeo con amoníaco gaseoso; c) se deja reposar la melamina líquida durante un tiempo promedio de 0 a 8 horas a una temperaturacomprendida entre 430°C y el puntode fusi ón de la melamina y a una presión parcial de amoníaco de 50 a 400 bares, y d) se enfría lenta y controladamente,disminuyendo la temperatura de a), b), o c) hasta una temperatura comprendida entre 330 y 270°C con una velocidad deenfriamiento de hasta 150°C/min. y a unapresión parcial de amoníaco de 50 a 400 bares, considerando que las presiones más altas permiten obtener velocidades de enfriamiento mayores y viceversa, laspresiones más bajas proporcionan velocidades deenfriamiento menor es, y luego, en un orden cualquiera, se elimina la presión, se enfría a temperaturaambiente y se obtiene la melamina de alta pureza al estado de polvo. El procedimiento del invento permite obtener melamina de alta purezasin llevar acabo pas os adicionales de purificación, con un grado de pureza superior al 99,8% y con un contenido de melem inferior a 100 ppm.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0239294A AT402294B (de) | 1994-12-23 | 1994-12-23 | Verfahren zur herstellung von hochreinem melamin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AR000529A1 true AR000529A1 (es) | 1997-07-10 |
Family
ID=3533515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AR33477995A AR000529A1 (es) | 1994-12-23 | 1995-12-22 | Procedimiento para preparar melamina de alta pureza |
Country Status (29)
| Country | Link |
|---|---|
| US (1) | US5721363A (es) |
| EP (1) | EP0799212B1 (es) |
| JP (1) | JPH10511368A (es) |
| KR (1) | KR100374730B1 (es) |
| CN (1) | CN1082951C (es) |
| AR (1) | AR000529A1 (es) |
| AT (2) | AT402294B (es) |
| BG (1) | BG63203B1 (es) |
| BR (1) | BR9510363A (es) |
| CA (1) | CA2207059A1 (es) |
| DE (1) | DE59505010D1 (es) |
| DK (1) | DK0799212T3 (es) |
| DZ (1) | DZ1956A1 (es) |
| EG (1) | EG20979A (es) |
| ES (1) | ES2128798T3 (es) |
| HR (1) | HRP950607B1 (es) |
| HU (1) | HU217784B (es) |
| IL (1) | IL116515A (es) |
| MY (1) | MY112743A (es) |
| NO (1) | NO307607B1 (es) |
| NZ (1) | NZ298387A (es) |
| PL (1) | PL187258B1 (es) |
| RO (2) | RO115874B1 (es) |
| RU (1) | RU2161609C2 (es) |
| SK (1) | SK281912B6 (es) |
| TR (1) | TR199501628A2 (es) |
| TW (1) | TW299325B (es) |
| WO (1) | WO1996020182A1 (es) |
| ZA (1) | ZA9510900B (es) |
Families Citing this family (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5514797A (en) * | 1995-06-07 | 1996-05-07 | Melamine Chemicals, Inc. | Method for increasing purity of melamine |
| 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. |
| ID22917A (id) * | 1997-05-21 | 1999-12-16 | Dsm Nv | Metode bagi pembuatan melamina |
| NL1006095C2 (nl) * | 1997-05-21 | 1998-11-25 | Dsm Nv | Werkwijze voor het bereiden van melamine. |
| NL1006147C2 (nl) * | 1997-05-28 | 1998-12-01 | Dsm Nv | Werkwijze voor het bereiden van melamine. |
| EP0984946B1 (en) | 1997-05-28 | 2003-03-19 | Dsm N.V. | Method for preparing melamine |
| NL1006191C2 (nl) * | 1997-06-02 | 1998-12-03 | Dsm Nv | Kristallijn melamine. |
| ID24238A (id) * | 1997-06-02 | 2000-07-13 | Dsm Nv | Melamin kristal |
| CN1265100A (zh) * | 1997-06-02 | 2000-08-30 | Dsm有限公司 | 制备蜜胺的方法 |
| NL1006192C2 (nl) * | 1997-06-02 | 1998-12-03 | Dsm Nv | Werkwijze voor het bereiden van melamine. |
| IT1292427B1 (it) * | 1997-06-27 | 1999-02-08 | Eurotecnica Contractors And En | Procedimento e apparecchiatura per la produzione di melammina |
| TWI221472B (en) * | 1997-10-15 | 2004-10-01 | Dsm Ip Assets Bv | Process for the preparation of 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 |
| EP1129080B1 (de) * | 1998-11-13 | 2003-08-20 | Agrolinz Melamin GmbH | Verfahren zur herstellung von reinem melamin |
| CZ20012301A3 (cs) * | 1998-12-23 | 2002-03-13 | Agrolinz Melamin Gmbh | Způsob čiątění melaminu |
| EP1035117A1 (en) * | 1999-03-08 | 2000-09-13 | Dsm N.V. | Method for preparing melamine from urea |
| 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. |
| IT1315255B1 (it) * | 1999-11-16 | 2003-02-03 | Eurotecnica Dev And Licensing | Procedimento di purificazione della melammina. |
| AT410210B (de) * | 2000-08-07 | 2003-03-25 | Agrolinz Melamin Gmbh | Verfahren zur herstellung von melamin |
| EP1188751A1 (en) * | 2000-09-13 | 2002-03-20 | Casale Chemicals SA | Process for the production of high purity melamine from urea |
| AT500297B8 (de) * | 2000-11-08 | 2007-02-15 | Agrolinz Melamin Gmbh | Verfahren zur reinigung von melaminhältigen ammoniak |
| PL209035B1 (pl) * | 2001-11-16 | 2011-07-29 | Ami Agrolinz Melamine Int Gmbh | Sposób wytwarzania melaminy pozbawionej melemu oraz bezprzeponowa chłodnica do stosowania tego sposobu |
| 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 |
| DE102004018784A1 (de) * | 2004-04-14 | 2005-11-03 | Ami-Agrolinz Melamine International Gmbh | Verfahren zur Herstellung von reinem Melamin |
| EP2098516A1 (en) * | 2008-03-04 | 2009-09-09 | Urea Casale S.A. | Process for the production of high purity melamine from urea |
| ITMI20080861A1 (it) * | 2008-05-13 | 2009-11-14 | Eurotecnica Melamine Luxembourg | Processo migliorato per la purificazione della melammina e relativa apparecchiatura |
| 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 |
| RU2417992C2 (ru) * | 2009-07-20 | 2011-05-10 | Открытое акционерное общество "Научно-исследовательский и проектный институт карбамида и продуктов органического синтеза" (ОАО "НИИК") | Способ получения меламина и способ удаления растворенных газов из водного раствора неочищенного меламина |
| IT1400090B1 (it) * | 2010-05-06 | 2013-05-17 | Eurotecnica Melamine Luxemburg Zweigniederlassung In Ittigen | Procedimento a basso consumo energetico per la produzione di melammina ad elevata purezza tramite pirolisi dell'urea, e relativa apparecchiatura |
| RU2692260C1 (ru) * | 2018-05-28 | 2019-06-24 | Георгий Евгеньевич Гайдадин | Способ получения меланина из личинок черной львинки |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3116294A (en) * | 1963-12-31 | Process- for preparing high-purity melamine from urea | ||
| GB800722A (en) * | 1955-03-12 | 1958-09-03 | Montedison Spa | Improvements in the production of melamine from urea |
| AT229876B (de) * | 1959-10-22 | 1963-10-25 | Montedison Spa | Verfahren zur Herstellung von sehr reinem Melamin |
| DE1217964B (de) * | 1961-07-13 | 1966-06-02 | Allied Chem | Verfahren zur Gewinnung von reinem Melamin |
| GB1003277A (en) * | 1963-07-10 | 1965-09-02 | Nissan Chemical Ind Ltd | Process and apparatus for the production and separation of melamine |
| DE1695564A1 (de) * | 1966-07-22 | 1971-05-06 | Nissan Chemical Ind Ltd | Verfahren zur Herstellung von Melamin hoher Reinheit |
| DE1670154C3 (de) * | 1966-10-06 | 1975-01-30 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Abscheidung von reinem Melamin aus den Abgasen der Melamlnsynthese aus Harnstoff |
| US3637686A (en) * | 1969-02-10 | 1972-01-25 | Nissan Chemical Ind Ltd | Process for recovering purified melamine |
| US4565867A (en) * | 1984-01-05 | 1986-01-21 | Melamine Chemicals, Inc. | Anhydrous high-pressure melamine synthesis |
| DE3500188C2 (de) * | 1984-01-05 | 1994-08-18 | Melamine Chemicals Inc | Wasserfreie Hochdruck-Melamin-Synthese |
| IT1270577B (it) * | 1993-02-22 | 1997-05-06 | Wladimiro Bizzotto | Reattore melamina ad alta pressione |
| FI96028C (fi) * | 1993-07-01 | 1996-04-25 | Kemira Oy | Menetelmä melamiinin valmistamiseksi |
| US5514796A (en) * | 1995-06-07 | 1996-05-07 | Melamine Chemicals, Inc. | Melamine of improved purity produced by high-pressure, non-catalytic process |
| US5514797A (en) * | 1995-06-07 | 1996-05-07 | Melamine Chemicals, Inc. | Method for increasing purity of melamine |
-
1994
- 1994-12-23 AT AT0239294A patent/AT402294B/de not_active IP Right Cessation
-
1995
- 1995-11-27 TW TW084112624A patent/TW299325B/zh active
- 1995-12-12 US US08/570,863 patent/US5721363A/en not_active Expired - Lifetime
- 1995-12-13 JP JP8520158A patent/JPH10511368A/ja active Pending
- 1995-12-13 WO PCT/EP1995/004919 patent/WO1996020182A1/de not_active Ceased
- 1995-12-13 RO RO97-01137A patent/RO115874B1/ro unknown
- 1995-12-13 NZ NZ298387A patent/NZ298387A/en unknown
- 1995-12-13 RU RU97112203/04A patent/RU2161609C2/ru not_active IP Right Cessation
- 1995-12-13 DK DK95942661T patent/DK0799212T3/da active
- 1995-12-13 AT AT95942661T patent/ATE176228T1/de not_active IP Right Cessation
- 1995-12-13 CA CA002207059A patent/CA2207059A1/en not_active Abandoned
- 1995-12-13 KR KR1019970704162A patent/KR100374730B1/ko not_active Expired - Fee Related
- 1995-12-13 EP EP95942661A patent/EP0799212B1/de not_active Expired - Lifetime
- 1995-12-13 ES ES95942661T patent/ES2128798T3/es not_active Expired - Lifetime
- 1995-12-13 BR BR9510363-5A patent/BR9510363A/pt not_active IP Right Cessation
- 1995-12-13 CN CN95197018A patent/CN1082951C/zh not_active Expired - Fee Related
- 1995-12-13 SK SK792-97A patent/SK281912B6/sk unknown
- 1995-12-13 DE DE59505010T patent/DE59505010D1/de not_active Expired - Fee Related
- 1995-12-13 PL PL95320789A patent/PL187258B1/pl not_active IP Right Cessation
- 1995-12-13 HU HU9702136A patent/HU217784B/hu not_active IP Right Cessation
- 1995-12-13 RO ROA200000141A patent/RO116276B1/ro unknown
- 1995-12-19 HR HRA2392/94A patent/HRP950607B1/xx not_active IP Right Cessation
- 1995-12-20 DZ DZ950139A patent/DZ1956A1/fr active
- 1995-12-20 MY MYPI95003983A patent/MY112743A/en unknown
- 1995-12-21 ZA ZA9510900A patent/ZA9510900B/xx unknown
- 1995-12-21 EG EG105295A patent/EG20979A/xx active
- 1995-12-21 TR TR95/01628A patent/TR199501628A2/xx unknown
- 1995-12-22 IL IL11651595A patent/IL116515A/xx not_active IP Right Cessation
- 1995-12-22 AR AR33477995A patent/AR000529A1/es unknown
-
1997
- 1997-06-10 BG BG101594A patent/BG63203B1/bg unknown
- 1997-06-20 NO NO972869A patent/NO307607B1/no not_active IP Right Cessation
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