EA199800532A1 - Способ получения чистого меламина - Google Patents

Способ получения чистого меламина

Info

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
Application number
EA199800532A
Other languages
English (en)
Other versions
EA000931B1 (ru
Inventor
Лоренцо Канци
Герхард Коуфал
Мартин Мюлльнер
Original Assignee
Агролинц Меламин Гмбх
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 Агролинц Меламин Гмбх filed Critical Агролинц Меламин Гмбх
Publication of EA199800532A1 publication Critical patent/EA199800532A1/ru
Publication of EA000931B1 publication Critical patent/EA000931B1/ru

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)
  • Sorption Type Refrigeration Machines (AREA)
  • Processes Of Treating Macromolecular Substances (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.
EA199800532A 1995-12-07 1996-12-04 Способ получения высокочистого меламина EA000931B1 (ru)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1006095C2 (nl) * 1997-05-21 1998-11-25 Dsm Nv Werkwijze voor het bereiden van melamine.
CN1144792C (zh) 1997-05-21 2004-04-07 Dsm有限公司 制备蜜胺的方法
CA2291736A1 (en) * 1997-05-28 1998-12-03 Dsm N.V. Method for preparing melamine
NL1006147C2 (nl) * 1997-05-28 1998-12-01 Dsm Nv Werkwijze voor het bereiden van melamine.
PL190496B1 (pl) * 1997-06-02 2005-12-30 Dsm Nv Multikrystaliczny melaminowy proszek
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.
CN1160342C (zh) 1998-11-13 2004-08-04 阿格罗林茨蜜胺有限公司 生产纯三聚氰胺的方法
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
DE50010873D1 (de) 1999-03-15 2005-09-08 Ami Agrolinz Melamine Int Gmbh Verfahren zur herstellung von festem melamin
DE50009875D1 (de) * 1999-07-27 2005-04-28 Ami Agrolinz Melamine Int Gmbh Verfahren zur herstellung von festem melamin
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
KR20050025132A (ko) 2001-11-16 2005-03-11 아엠이-아그로린츠 멜라민 인터내셔날 게엠베하 멜렘-비함유 멜라민의 제조 방법 및 냉각기
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)

* Cited by examiner, † Cited by third party
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
DE3500188C2 (de) * 1984-01-05 1994-08-18 Melamine Chemicals Inc Wasserfreie Hochdruck-Melamin-Synthese
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
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
US5514797A (en) * 1995-06-07 1996-05-07 Melamine Chemicals, Inc. Method for increasing purity of melamine
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
NZ324297A (en) 1999-07-29
KR100462920B1 (ko) 2005-04-08
EA000931B1 (ru) 2000-06-26
JP2000501404A (ja) 2000-02-08
AU1175597A (en) 1997-06-27
PL327067A1 (en) 1998-11-23
HRP960575A2 (en) 1997-12-31
DE59609075D1 (de) 2002-05-16
CN1203592A (zh) 1998-12-30
IL124630A0 (en) 1998-12-06
CN1067995C (zh) 2001-07-04
ATE215936T1 (de) 2002-04-15
HUP9904406A2 (hu) 2000-05-28
NO982251L (no) 1998-05-15
TW341567B (en) 1998-10-01
EG20917A (en) 2000-06-28
SK74998A3 (en) 1998-11-04
HUP9904406A3 (en) 2000-07-28
NO982251D0 (no) 1998-05-15
NO309982B1 (no) 2001-04-30
EP0874832A1 (de) 1998-11-04
PL189811B1 (pl) 2005-09-30
CO4770995A1 (es) 1999-04-30
EP0874832B1 (de) 2002-04-10
BG102504A (en) 1999-04-30
AT403579B (de) 1998-03-25
UA46072C2 (uk) 2002-05-15
AU709030B2 (en) 1999-08-19
CA2239542A1 (en) 1997-06-12
AR004873A1 (es) 1999-03-10
ZA9610295B (en) 1997-06-17
MY112761A (en) 2001-08-30
TR199801029T2 (xx) 1999-05-21
BR9611892A (pt) 1999-02-17
DZ2135A1 (fr) 2002-07-23
MX9804435A (es) 1998-09-30
KR19990071932A (ko) 1999-09-27
ATA199495A (de) 1997-08-15
WO1997020826A1 (de) 1997-06-12

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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