BR9915040A - Método para produzir melamina pura - Google Patents
Método para produzir melamina puraInfo
- Publication number
- BR9915040A BR9915040A BR9915040-9A BR9915040A BR9915040A BR 9915040 A BR9915040 A BR 9915040A BR 9915040 A BR9915040 A BR 9915040A BR 9915040 A BR9915040 A BR 9915040A
- Authority
- BR
- Brazil
- Prior art keywords
- melamine
- ammonia
- cooling
- solidifies
- aqueous solution
- Prior art date
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)
Abstract
<B>MéTODO PARA PRODUZIR MELAMINA PURA<D> A invenção refere-se a um método para produzir melamina pura. De acordo com esse método, a melamina fundida, que é produzida a partir da uréia em um processo de alta pressão, é resfriada e amónia é adicionada até que a mesma alcance uma temperatura de aproximadamente 1 a 50°C acima da temperatura de fusão da melamina dependendo da respectiva pressão de amónia e : a) do resfriamento com água ou uma solução ou suspensão aquosa contendo amónia e/ou melamina de forma que a melamina solidifique b) do resfriamento com líquido gelado ou amónia gasosa, de forma que a melamina solidifique, a melamina sendo então resfriada ainda com água ou uma solução ou suspensão aquosa contendo amónia e/ou melamina e c) da melamina ser então isolada.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT189498 | 1998-11-13 | ||
| PCT/EP1999/008462 WO2000029393A1 (de) | 1998-11-13 | 1999-11-05 | Verfahren zur herstellung von reinem melamin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR9915040A true BR9915040A (pt) | 2001-07-17 |
Family
ID=3523321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR9915040-9A BR9915040A (pt) | 1998-11-13 | 1999-11-05 | Método para produzir melamina pura |
Country Status (22)
| Country | Link |
|---|---|
| US (1) | US6790956B1 (pt) |
| EP (1) | EP1129080B1 (pt) |
| JP (1) | JP2002529539A (pt) |
| KR (1) | KR100643552B1 (pt) |
| CN (1) | CN1160342C (pt) |
| AR (1) | AR021254A1 (pt) |
| AT (1) | ATE247648T1 (pt) |
| AU (1) | AU767818B2 (pt) |
| BR (1) | BR9915040A (pt) |
| CA (1) | CA2350777A1 (pt) |
| CZ (1) | CZ20011625A3 (pt) |
| DE (1) | DE59906703D1 (pt) |
| EA (1) | EA003233B1 (pt) |
| EE (1) | EE200100262A (pt) |
| ES (1) | ES2209560T3 (pt) |
| HU (1) | HUP0104769A2 (pt) |
| NO (1) | NO20012285L (pt) |
| PL (1) | PL198432B1 (pt) |
| RO (1) | RO119717B1 (pt) |
| SK (1) | SK6192001A3 (pt) |
| TR (1) | TR200101341T2 (pt) |
| WO (1) | WO2000029393A1 (pt) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT410210B (de) * | 2000-08-07 | 2003-03-25 | Agrolinz Melamin Gmbh | Verfahren zur herstellung von melamin |
| US20030028020A1 (en) * | 2001-07-27 | 2003-02-06 | Gupta Ram B. | Process for the synthesis of high purity melamine |
| NL1018936C2 (nl) * | 2001-09-12 | 2003-03-13 | Dsm Nv | Werkwijze voor het verkrijgen van kristallijn melamine uit een melaminesmelt. |
| AT410795B (de) * | 2001-11-16 | 2003-07-25 | Agrolinz Melamin Gmbh | Verfahren zur herstellung von melemfreiem melamin |
| BR0214215A (pt) * | 2001-11-16 | 2004-12-21 | Ami Agrolinz Melamine Int Gmbh | Processo para a preparação de melamina isenta de melem e agentes de resfriamento brusco |
| 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 |
| ITMI20021422A1 (it) * | 2002-06-27 | 2003-12-29 | Eurotecnica Dev & Licensing S | Procedimento e dispositivo per il recupero della melammina per espansione dalle sue miscele grezze prodotte nel processo di pirolisi dell'ur |
| DE102004018784A1 (de) * | 2004-04-14 | 2005-11-03 | Ami-Agrolinz Melamine International Gmbh | Verfahren zur Herstellung von reinem Melamin |
| CN1872842B (zh) * | 2006-06-27 | 2010-05-12 | 山东联合化工股份有限公司 | 常压两步法碳铵联产三聚氰胺工艺 |
| DE102006055571B4 (de) | 2006-11-20 | 2018-09-27 | Urea Casale S.A. | Verfahren und Vorrichtung zur Aufarbeitung einer Melaminschmelze |
| EP2222651A2 (en) * | 2007-12-20 | 2010-09-01 | DSM IP Assets B.V. | Process for the preparation of melamine |
| EP2098516A1 (en) * | 2008-03-04 | 2009-09-09 | Urea Casale S.A. | Process for the production of high purity melamine from urea |
| RU2495876C1 (ru) | 2012-09-10 | 2013-10-20 | Открытое Акционерное Общество "Научно-Исследовательский И Проектный Институт Карбамида И Продуктов Органического Синтеза" (Оао Ниик) | Способ очистки меламина |
| 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 |
| EP3208264A1 (en) * | 2016-02-19 | 2017-08-23 | Casale SA | Method for revamping a high pressure melamine plant |
| EP3272743A1 (en) | 2016-07-22 | 2018-01-24 | Casale SA | Process for melamine purification |
| EP4098356A1 (en) * | 2018-01-26 | 2022-12-07 | Casale Sa | Plant and process for the synthesis of melamine with offgas recovery in a tied-in urea plant |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3386999A (en) * | 1966-02-10 | 1968-06-04 | Chemical Construction Corp | Synthesis of melamine |
| US3637686A (en) * | 1969-02-10 | 1972-01-25 | Nissan Chemical Ind Ltd | Process for recovering purified melamine |
| NL8201479A (nl) * | 1982-04-07 | 1983-11-01 | Stamicarbon | Werkwijze voor het bereiden van melamine. |
| 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 |
| AT403579B (de) * | 1995-12-07 | 1998-03-25 | Agrolinz Melamin Gmbh | Verfahren zur herstellung von hochreinem melamin |
-
1999
- 1999-11-05 US US09/830,074 patent/US6790956B1/en not_active Expired - Lifetime
- 1999-11-05 RO ROA200100516A patent/RO119717B1/ro unknown
- 1999-11-05 KR KR1020017005952A patent/KR100643552B1/ko not_active IP Right Cessation
- 1999-11-05 EA EA200100537A patent/EA003233B1/ru not_active IP Right Cessation
- 1999-11-05 EP EP99972208A patent/EP1129080B1/de not_active Expired - Lifetime
- 1999-11-05 CA CA002350777A patent/CA2350777A1/en not_active Abandoned
- 1999-11-05 EE EEP200100262A patent/EE200100262A/xx unknown
- 1999-11-05 AT AT99972208T patent/ATE247648T1/de active
- 1999-11-05 PL PL347724A patent/PL198432B1/pl unknown
- 1999-11-05 WO PCT/EP1999/008462 patent/WO2000029393A1/de active IP Right Grant
- 1999-11-05 HU HU0104769A patent/HUP0104769A2/hu unknown
- 1999-11-05 BR BR9915040-9A patent/BR9915040A/pt not_active Application Discontinuation
- 1999-11-05 CN CNB998132322A patent/CN1160342C/zh not_active Expired - Lifetime
- 1999-11-05 ES ES99972208T patent/ES2209560T3/es not_active Expired - Lifetime
- 1999-11-05 DE DE59906703T patent/DE59906703D1/de not_active Expired - Lifetime
- 1999-11-05 CZ CZ20011625A patent/CZ20011625A3/cs unknown
- 1999-11-05 JP JP2000582380A patent/JP2002529539A/ja active Pending
- 1999-11-05 SK SK619-2001A patent/SK6192001A3/sk unknown
- 1999-11-05 AU AU11604/00A patent/AU767818B2/en not_active Ceased
- 1999-11-05 TR TR2001/01341T patent/TR200101341T2/xx unknown
- 1999-11-12 AR ARP990105761A patent/AR021254A1/es active IP Right Grant
-
2001
- 2001-05-09 NO NO20012285A patent/NO20012285L/no not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| HUP0104769A2 (hu) | 2002-03-28 |
| WO2000029393A1 (de) | 2000-05-25 |
| AU1160400A (en) | 2000-06-05 |
| PL198432B1 (pl) | 2008-06-30 |
| AR021254A1 (es) | 2002-07-03 |
| TR200101341T2 (tr) | 2001-11-21 |
| CZ20011625A3 (cs) | 2001-08-15 |
| KR100643552B1 (ko) | 2006-11-10 |
| EA003233B1 (ru) | 2003-02-27 |
| CN1160342C (zh) | 2004-08-04 |
| CN1326448A (zh) | 2001-12-12 |
| CA2350777A1 (en) | 2000-05-25 |
| ATE247648T1 (de) | 2003-09-15 |
| EA200100537A1 (ru) | 2001-12-24 |
| AU767818B2 (en) | 2003-11-27 |
| US6790956B1 (en) | 2004-09-14 |
| SK6192001A3 (en) | 2001-12-03 |
| DE59906703D1 (de) | 2003-09-25 |
| KR20010073230A (ko) | 2001-07-31 |
| EE200100262A (et) | 2002-08-15 |
| EP1129080A1 (de) | 2001-09-05 |
| NO20012285D0 (no) | 2001-05-09 |
| EP1129080B1 (de) | 2003-08-20 |
| RO119717B1 (ro) | 2005-02-28 |
| ES2209560T3 (es) | 2004-06-16 |
| JP2002529539A (ja) | 2002-09-10 |
| PL347724A1 (en) | 2002-04-22 |
| NO20012285L (no) | 2001-05-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B07A | Application suspended after technical examination (opinion) [chapter 7.1 patent gazette] | ||
| B09B | Patent application refused [chapter 9.2 patent gazette] |
Free format text: INDEFIRO O PEDIDO DE ACORDO COM O(S) ARTIGO(S) 8,24 E 25 DA LPI |
|
| B09B | Patent application refused [chapter 9.2 patent gazette] |
Free format text: MANTIDO O INDEFERIMENTO UMA VEZ QUE NAO FOI APRESENTADO RECURSO DENTRO DO PRAZO LEGAL. |