EA199800532A1 - Способ получения чистого меламина - Google Patents
Способ получения чистого меламинаInfo
- Publication number
- EA199800532A1 EA199800532A1 EA199800532A EA199800532A EA199800532A1 EA 199800532 A1 EA199800532 A1 EA 199800532A1 EA 199800532 A EA199800532 A EA 199800532A EA 199800532 A EA199800532 A EA 199800532A EA 199800532 A1 EA199800532 A1 EA 199800532A1
- Authority
- EA
- Eurasian Patent Office
- Prior art keywords
- melamine
- partial pressure
- ammonia
- bar
- pure
- 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)
- Processes Of Treating Macromolecular Substances (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
Изобретение относится к способу получения чистого меламина, в котором жидкий, содержащий аммиак меламин подвергают резкому расширению от парциального давления аммиака pв диапазоне между 400 и 50 бар до парциального давления pв диапазоне между 200 бар и атмосферным давлением при температуре, превышающей от 0-60°С фиксированную температуру затвердевания меламина, зависящую от превалирующего в каждом случае парциального давления аммиака, при этом более высокие давления обеспечивают достижение более высокой разности температур от фиксированной температуры затвердевания меламина, чем при более низких давлениях, причем pвсегда больше, чем р. В результате этого чистый меламин осаждается в твердой форме. Затем, если это необходимо, осуществляют дальнейшее расширение меламина до атмосферного давления и охлаждение до комнатной температуры в любой последовательности и отделяют чистый меламин.Международная заявка была опубликована вместе с отчетом о международном поиске.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0199495A AT403579B (de) | 1995-12-07 | 1995-12-07 | Verfahren zur herstellung von hochreinem melamin |
PCT/EP1996/005389 WO1997020826A1 (de) | 1995-12-07 | 1996-12-04 | Verfahren zur herstellung von reinem melamin |
Publications (2)
Publication Number | Publication Date |
---|---|
EA199800532A1 true EA199800532A1 (ru) | 1998-12-24 |
EA000931B1 EA000931B1 (ru) | 2000-06-26 |
Family
ID=3525542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EA199800532A EA000931B1 (ru) | 1995-12-07 | 1996-12-04 | Способ получения высокочистого меламина |
Country Status (29)
Country | Link |
---|---|
EP (1) | EP0874832B1 (ru) |
JP (1) | JP2000501404A (ru) |
KR (1) | KR100462920B1 (ru) |
CN (1) | CN1067995C (ru) |
AR (1) | AR004873A1 (ru) |
AT (2) | AT403579B (ru) |
AU (1) | AU709030B2 (ru) |
BG (1) | BG102504A (ru) |
BR (1) | BR9611892A (ru) |
CA (1) | CA2239542A1 (ru) |
CO (1) | CO4770995A1 (ru) |
DE (1) | DE59609075D1 (ru) |
DZ (1) | DZ2135A1 (ru) |
EA (1) | EA000931B1 (ru) |
EG (1) | EG20917A (ru) |
HR (1) | HRP960575A2 (ru) |
HU (1) | HUP9904406A3 (ru) |
IL (1) | IL124630A0 (ru) |
MX (1) | MX9804435A (ru) |
MY (1) | MY112761A (ru) |
NO (1) | NO309982B1 (ru) |
NZ (1) | NZ324297A (ru) |
PL (1) | PL189811B1 (ru) |
SK (1) | SK74998A3 (ru) |
TR (1) | TR199801029T2 (ru) |
TW (1) | TW341567B (ru) |
UA (1) | UA46072C2 (ru) |
WO (1) | WO1997020826A1 (ru) |
ZA (1) | ZA9610295B (ru) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2197470T3 (es) | 1997-05-21 | 2004-01-01 | Dsm Ip Assets B.V. | Metodo para preparar melamina. |
NL1006095C2 (nl) * | 1997-05-21 | 1998-11-25 | Dsm Nv | Werkwijze voor het bereiden van melamine. |
KR100495264B1 (ko) | 1997-05-28 | 2005-06-14 | 코닌클리즈케 디에스엠 엔.브이. | 멜라민의 제조방법 |
NL1006147C2 (nl) * | 1997-05-28 | 1998-12-01 | Dsm Nv | Werkwijze voor het bereiden van melamine. |
DE69837432T2 (de) * | 1997-06-02 | 2007-12-13 | Dsm Ip Assets B.V. | Kristallines melamin |
NL1006191C2 (nl) * | 1997-06-02 | 1998-12-03 | Dsm Nv | Kristallijn melamine. |
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. |
TR200101341T2 (tr) | 1998-11-13 | 2001-11-21 | Agrolinz Melamin Gmbh | Saf melamin üretimine yönelik yöntem |
KR100575020B1 (ko) | 1998-12-23 | 2006-05-02 | 아엠이-아그로린츠 멜라민 인터내셔날 게엠베하 | 멜라민의 정제방법 |
EP1035117A1 (en) * | 1999-03-08 | 2000-09-13 | Dsm N.V. | Method for preparing melamine from urea |
BR0009017A (pt) * | 1999-03-15 | 2001-12-26 | Agrolinz Melamin Gmbh | Processo para preparar melamina sólida |
AU6697600A (en) * | 1999-07-27 | 2001-02-13 | Agrolinz Melamin Gmbh | Method for producing solid melamine |
NL1013217C2 (nl) * | 1999-10-05 | 2001-04-06 | Dsm Nv | Werkwijze voor de bereiding van melamine. |
EP1138676A1 (en) | 2000-03-27 | 2001-10-04 | Casale Chemicals SA | Process for producing melamine at high pureness |
AT410210B (de) * | 2000-08-07 | 2003-03-25 | Agrolinz Melamin Gmbh | Verfahren zur herstellung von melamin |
AT500297B8 (de) | 2000-11-08 | 2007-02-15 | Agrolinz Melamin Gmbh | Verfahren zur reinigung von melaminhältigen ammoniak |
AT410793B (de) * | 2000-12-27 | 2003-07-25 | Agrolinz Melamin Gmbh | Verfahren zur herstellung von melamin |
CN1315812C (zh) | 2001-11-16 | 2007-05-16 | Ami-阿格罗林茨三聚氰胺有限公司 | 制备不含蜜勒胺的三聚氰胺的方法及骤冷器 |
FR2843964B1 (fr) * | 2002-08-29 | 2004-10-01 | Sanofi Synthelabo | Derives de dioxane-2-alkylcarbamates, leur preparation et leur application en therapeutique |
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 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3116294A (en) * | 1963-12-31 | Process- for preparing high-purity melamine from urea | ||
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 |
DE3546893C3 (de) * | 1984-01-05 | 1998-01-29 | Melamine Chemicals Inc | Wasserfreie Hochdruck-Melamin-Synthese |
DE3500188C2 (de) * | 1984-01-05 | 1994-08-18 | Melamine Chemicals Inc | Wasserfreie Hochdruck-Melamin-Synthese |
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 |
US5514797A (en) * | 1995-06-07 | 1996-05-07 | Melamine Chemicals, Inc. | Method for increasing purity of melamine |
-
1995
- 1995-12-07 AT AT0199495A patent/AT403579B/de active
-
1996
- 1996-12-02 TW TW085114862A patent/TW341567B/zh active
- 1996-12-03 EG EG106896A patent/EG20917A/xx active
- 1996-12-04 DZ DZ960180A patent/DZ2135A1/fr active
- 1996-12-04 BR BR9611892A patent/BR9611892A/pt active Search and Examination
- 1996-12-04 HU HU9904406A patent/HUP9904406A3/hu unknown
- 1996-12-04 EA EA199800532A patent/EA000931B1/ru not_active IP Right Cessation
- 1996-12-04 CA CA002239542A patent/CA2239542A1/en not_active Abandoned
- 1996-12-04 UA UA98063040A patent/UA46072C2/uk unknown
- 1996-12-04 CN CN96198818A patent/CN1067995C/zh not_active Expired - Fee Related
- 1996-12-04 EP EP96942322A patent/EP0874832B1/de not_active Expired - Lifetime
- 1996-12-04 TR TR1998/01029T patent/TR199801029T2/xx unknown
- 1996-12-04 IL IL12463096A patent/IL124630A0/xx unknown
- 1996-12-04 NZ NZ324297A patent/NZ324297A/xx unknown
- 1996-12-04 JP JP9520981A patent/JP2000501404A/ja active Pending
- 1996-12-04 KR KR10-1998-0704219A patent/KR100462920B1/ko not_active IP Right Cessation
- 1996-12-04 SK SK749-98A patent/SK74998A3/sk unknown
- 1996-12-04 PL PL96327067A patent/PL189811B1/pl not_active IP Right Cessation
- 1996-12-04 AU AU11755/97A patent/AU709030B2/en not_active Ceased
- 1996-12-04 MY MYPI96005088A patent/MY112761A/en unknown
- 1996-12-04 DE DE59609075T patent/DE59609075D1/de not_active Expired - Lifetime
- 1996-12-04 WO PCT/EP1996/005389 patent/WO1997020826A1/de active IP Right Grant
- 1996-12-04 AT AT96942322T patent/ATE215936T1/de not_active IP Right Cessation
- 1996-12-05 HR HRA1994/95A patent/HRP960575A2/hr not_active Application Discontinuation
- 1996-12-05 CO CO96063884A patent/CO4770995A1/es unknown
- 1996-12-06 AR ARP960105520A patent/AR004873A1/es active IP Right Grant
- 1996-12-06 ZA ZA9610295A patent/ZA9610295B/xx unknown
-
1998
- 1998-05-15 NO NO982251A patent/NO309982B1/no not_active IP Right Cessation
- 1998-06-02 BG BG102504A patent/BG102504A/xx unknown
- 1998-06-04 MX MX9804435A patent/MX9804435A/es unknown
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EA199800532A1 (ru) | Способ получения чистого меламина | |
DE69620298D1 (de) | Durch nichtkatalytisches, unter Hochdruck arbeitendes Verfahren hergestelltes Melamin von verbesserter Reinheit | |
CA2182339A1 (en) | Thermostatically Controlled Intercooler System for a Multiple Stage Compressor and Method | |
EA200100537A1 (ru) | Способ получения чистого меламина | |
DE59504292D1 (de) | Verfahren zur reinigung von melamin | |
CA2321476A1 (en) | Clip having a tightening fastener | |
HUP9900913A2 (hu) | Eljárás N-monoszubsztituált és N,N'-diszubsztituált aszimmetrikus 7-tagú ciklusos karbamidok előállítására | |
MY134163A (en) | Method for the production of polyamides | |
FR2374539A1 (fr) | Procede de compression de vapeur d'eau, et circuits thermiques pour sa mise en oeuvre | |
NO20012492D0 (no) | Fremgangsmåte for fremstilling av N-alkyl-N'-nitroguanidin | |
EP0340780A3 (en) | Azidochlorination and diazidization of glycals | |
ID28942A (id) | Metode untuk memurnikan melamin | |
EA200100975A1 (ru) | Способ получения твердого меламина | |
ES2096569T3 (es) | Procedimiento para la obtencion de pirrolidin-2-onas n-substituidas. | |
RU96123215A (ru) | Способ получения чистого ксенона из первичного криптонового концентрата | |
ATE1094T1 (de) | Verfahren zur herstellung von n,n'-diformylhydrazin. | |
TH23420A (th) | กระบวนการสำหรับทำให้เมลามีนบริสุทธิ์ | |
IT1263007B (it) | Procedimento per l'integrazione della produzione di urea e melammina che utilizza il riciclo di una soluzione di carbammato di ammonio ed ammoniaca dall'impianto urea all'impianto melammina. | |
TH29891B (th) | กระบวนการสำหรับการเตรียมยูเรีย | |
IT1254416B (it) | Processo e impianto per la produzione di humus e suo sistema d'impiegoper la riforestazione di zone desertiche. | |
MX9704638A (es) | Procedimiento para la produccion de melamina de alta pureza. | |
KR860003897A (ko) | 불소수지 파형관의 제조방법 | |
UY23513A1 (es) | Proceso para la preparacion de 6-alquiltio-2,4-diamino-1,3, 5-triazinas |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s) |
Designated state(s): AM AZ BY KZ KG MD TJ TM |
|
MM4A | Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s) |
Designated state(s): RU |