AR004873A1 - Procedimiento para la elaboración de melamina pura. - Google Patents

Procedimiento para la elaboración de melamina pura.

Info

Publication number
AR004873A1
AR004873A1 ARP960105520A ARP960105520A AR004873A1 AR 004873 A1 AR004873 A1 AR 004873A1 AR P960105520 A ARP960105520 A AR P960105520A AR P960105520 A ARP960105520 A AR P960105520A AR 004873 A1 AR004873 A1 AR 004873A1
Authority
AR
Argentina
Prior art keywords
melamine
ammonia
pure
partial pressure
bar
Prior art date
Application number
ARP960105520A
Other languages
English (en)
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 AR004873A1 publication Critical patent/AR004873A1/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)
  • Sorption Type Refrigeration Machines (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

Un procedimiento para la elaboración de malamina pura, en el que la melamina líquida que contiene amoníaco, que está a una temperatura de 0 a 60°Cpor encima por encima de la que se corresponde con la presión parcial de amoníacoexisten te en el punto de solidificación de la melamina, con lo que lasmayores presiones permiten una separación de las temperaturas del punto de solidificación de la melamina que las bajas presiones, se descomprimerápidamente de una presiónparcial de amoníaco p1 de 400 - 50 bar a una presión parcial de amoníaco p2 de 200 bar -presión atmosférica, donde p1 es siempremayor que p2, con lo que se separa melamina pura en forma sólida, luego de la cual se procede, arbitrariamente , en csonecesario, a seguir descomprimiendohasta la presión atmosférica, a seguir enfriando hasta la temperatua ambiente, y a aislar la melamina pura.
ARP960105520A 1995-12-07 1996-12-06 Procedimiento para la elaboración de melamina pura. AR004873A1 (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
AR004873A1 true AR004873A1 (es) 1999-03-10

Family

ID=3525542

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP960105520A AR004873A1 (es) 1995-12-07 1996-12-06 Procedimiento para la elaboración 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
NL1006095C2 (nl) * 1997-05-21 1998-11-25 Dsm Nv Werkwijze voor het bereiden van melamine.
WO1998052928A1 (en) 1997-05-21 1998-11-26 Dsm N.V. Method for preparing melamine
NL1006147C2 (nl) * 1997-05-28 1998-12-01 Dsm Nv Werkwijze voor het bereiden van melamine.
JP2002500664A (ja) 1997-05-28 2002-01-08 ディーエスエム エヌ．ブイ． メラミンの製造法
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
CA2291627C (en) * 1997-06-02 2008-12-09 Dsm N.V. Crystalline melamine
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.
TR200101341T2 (tr) 1998-11-13 2001-11-21 Agrolinz Melamin Gmbh Saf melamin üretimine yönelik yöntem
AU758664B2 (en) 1998-12-23 2003-03-27 Agrolinz Melamin Gmbh Method for purifying melamine
EP1035117A1 (en) * 1999-03-08 2000-09-13 Dsm N.V. Method for preparing melamine from urea
PL351565A1 (en) 1999-03-15 2003-05-05 Agrolinz Melamin Gmbh Method for producing solid melamine
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
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
JP2000501404A (ja) 2000-02-08
CN1067995C (zh) 2001-07-04
DE59609075D1 (de) 2002-05-16
CN1203592A (zh) 1998-12-30
AU1175597A (en) 1997-06-27
PL189811B1 (pl) 2005-09-30
EA000931B1 (ru) 2000-06-26
ATE215936T1 (de) 2002-04-15
NZ324297A (en) 1999-07-29
NO982251L (no) 1998-05-15
WO1997020826A1 (de) 1997-06-12
AU709030B2 (en) 1999-08-19
DZ2135A1 (fr) 2002-07-23
EG20917A (en) 2000-06-28
IL124630A0 (en) 1998-12-06
PL327067A1 (en) 1998-11-23
KR100462920B1 (ko) 2005-04-08
HRP960575A2 (en) 1997-12-31
NO982251D0 (no) 1998-05-15
TW341567B (en) 1998-10-01
HUP9904406A2 (hu) 2000-05-28
EP0874832B1 (de) 2002-04-10
SK74998A3 (en) 1998-11-04
TR199801029T2 (xx) 1999-05-21
AT403579B (de) 1998-03-25
BG102504A (en) 1999-04-30
EP0874832A1 (de) 1998-11-04
ATA199495A (de) 1997-08-15
MY112761A (en) 2001-08-30
MX9804435A (es) 1998-09-30
UA46072C2 (uk) 2002-05-15
KR19990071932A (ko) 1999-09-27
CO4770995A1 (es) 1999-04-30
CA2239542A1 (en) 1997-06-12
EA199800532A1 (ru) 1998-12-24
HUP9904406A3 (en) 2000-07-28
BR9611892A (pt) 1999-02-17
ZA9610295B (en) 1997-06-17
NO309982B1 (no) 2001-04-30

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