CO4770995A1 - Procedimiento para la elaboracion de melamina pura - Google Patents

Procedimiento para la elaboracion de melamina pura

Info

Publication number
CO4770995A1
CO4770995A1 CO96063884A CO96063884A CO4770995A1 CO 4770995 A1 CO4770995 A1 CO 4770995A1 CO 96063884 A CO96063884 A CO 96063884A CO 96063884 A CO96063884 A CO 96063884A CO 4770995 A1 CO4770995 A1 CO 4770995A1
Authority
CO
Colombia
Prior art keywords
melamine
ammonia
purest
partial pressure
elaboration
Prior art date
Application number
CO96063884A
Other languages
English (en)
Inventor
Canzi Lorenzo
Gerhard Coufal
Martin Mullner
Original Assignee
Agrolinz Melamin Gmbh
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 Agrolinz Melamin Gmbh filed Critical Agrolinz Melamin Gmbh
Publication of CO4770995A1 publication Critical patent/CO4770995A1/es

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

Un procedimiento para la elaboración de melamina purísima,en el que la melamina líquida saturada con amoníaco, que está a una temperatura de 0 a 60°C por encima de la que corresponde con la presión parcial de amoníaco existente en el punto de solidificación de la melamina, pero inferior a 350°C, con lo que las mayores presiones permiten una mayor separación de las temperaturas del punto de solidificación de la melamina que las bajas presiones, se descomprimen rápidamente de una presión parcial de amoníaco de 40.000.000 - 10.000.000 Pa a una presión parcial de amoníaco de 20.000.000 Pa - presión atmosférica, con lo que se separa melamina purísima en forma sólida, luego de la cual se procede, arbitrariamente, en caso necesario, a seguir descomprimiendo hasta la presión atmosférica, a seguir enfriando hasta la temperatura ambiente, y a aislar la melamina purísima.
CO96063884A 1995-12-07 1996-12-05 Procedimiento para la elaboracion de melamina pura CO4770995A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0199495A AT403579B (de) 1995-12-07 1995-12-07 Verfahren zur herstellung von hochreinem melamin

Publications (1)

Publication Number Publication Date
CO4770995A1 true CO4770995A1 (es) 1999-04-30

Family

ID=3525542

Family Applications (1)

Application Number Title Priority Date Filing Date
CO96063884A CO4770995A1 (es) 1995-12-07 1996-12-05 Procedimiento para la elaboracion de melamina pura

Country Status (29)

Country Link
EP (1) EP0874832B1 (es)
JP (1) JP2000501404A (es)
KR (1) KR100462920B1 (es)
CN (1) CN1067995C (es)
AR (1) AR004873A1 (es)
AT (2) AT403579B (es)
AU (1) AU709030B2 (es)
BG (1) BG102504A (es)
BR (1) BR9611892A (es)
CA (1) CA2239542A1 (es)
CO (1) CO4770995A1 (es)
DE (1) DE59609075D1 (es)
DZ (1) DZ2135A1 (es)
EA (1) EA000931B1 (es)
EG (1) EG20917A (es)
HR (1) HRP960575A2 (es)
HU (1) HUP9904406A3 (es)
IL (1) IL124630A0 (es)
MX (1) MX9804435A (es)
MY (1) MY112761A (es)
NO (1) NO309982B1 (es)
NZ (1) NZ324297A (es)
PL (1) PL189811B1 (es)
SK (1) SK74998A3 (es)
TR (1) TR199801029T2 (es)
TW (1) TW341567B (es)
UA (1) UA46072C2 (es)
WO (1) WO1997020826A1 (es)
ZA (1) ZA9610295B (es)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100495262B1 (ko) 1997-05-21 2005-06-14 코닌클리즈케 디에스엠 엔.브이. 멜라민의 제조방법
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.
ES2195338T3 (es) 1997-05-28 2003-12-01 Dsm Ip Assets Bv Metodo para preparar melamina.
JP2002502416A (ja) * 1997-06-02 2002-01-22 ディーエスエム エヌ．ブイ． メラミンの製造法
KR100569572B1 (ko) * 1997-06-02 2006-04-10 디에스엠 아이피 어셋츠 비.브이. 결정성 멜라민
NL1006191C2 (nl) * 1997-06-02 1998-12-03 Dsm Nv Kristallijn 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.
DE59906703D1 (de) 1998-11-13 2003-09-25 Agrolinz Melamin Gmbh Linz 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
EA200100975A1 (ru) * 1999-03-15 2002-02-28 Агролинц Меламин Гмбх Способ получения твердого меламина
WO2001007420A2 (de) * 1999-07-27 2001-02-01 Agrolinz Melamin 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
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
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
DE3546893C3 (de) * 1984-01-05 1998-01-29 Melamine Chemicals Inc Wasserfreie Hochdruck-Melamin-Synthese
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
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

Also Published As

Publication number Publication date
TW341567B (en) 1998-10-01
NZ324297A (en) 1999-07-29
DZ2135A1 (fr) 2002-07-23
BG102504A (en) 1999-04-30
MX9804435A (es) 1998-09-30
EA199800532A1 (ru) 1998-12-24
AU1175597A (en) 1997-06-27
ATE215936T1 (de) 2002-04-15
EP0874832A1 (de) 1998-11-04
PL327067A1 (en) 1998-11-23
HRP960575A2 (en) 1997-12-31
EG20917A (en) 2000-06-28
JP2000501404A (ja) 2000-02-08
NO982251L (no) 1998-05-15
DE59609075D1 (de) 2002-05-16
EP0874832B1 (de) 2002-04-10
NO309982B1 (no) 2001-04-30
HUP9904406A2 (hu) 2000-05-28
TR199801029T2 (xx) 1999-05-21
MY112761A (en) 2001-08-30
NO982251D0 (no) 1998-05-15
WO1997020826A1 (de) 1997-06-12
CA2239542A1 (en) 1997-06-12
ATA199495A (de) 1997-08-15
AT403579B (de) 1998-03-25
KR19990071932A (ko) 1999-09-27
SK74998A3 (en) 1998-11-04
CN1067995C (zh) 2001-07-04
AR004873A1 (es) 1999-03-10
AU709030B2 (en) 1999-08-19
CN1203592A (zh) 1998-12-30
BR9611892A (pt) 1999-02-17
PL189811B1 (pl) 2005-09-30
HUP9904406A3 (en) 2000-07-28
KR100462920B1 (ko) 2005-04-08
ZA9610295B (en) 1997-06-17
UA46072C2 (uk) 2002-05-15
EA000931B1 (ru) 2000-06-26
IL124630A0 (en) 1998-12-06

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