EG21897A - Method for prepararing melamine - Google Patents

Method for prepararing melamine

Info

Publication number
EG21897A
EG21897A EG80199A EG80199A EG21897A EG 21897 A EG21897 A EG 21897A EG 80199 A EG80199 A EG 80199A EG 80199 A EG80199 A EG 80199A EG 21897 A EG21897 A EG 21897A
Authority
EG
Egypt
Prior art keywords
melamine
melt
treated
ammonia
column
Prior art date
Application number
EG80199A
Other languages
English (en)
Inventor
Tjay T Tjide
Original Assignee
Dsm Nv
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 Dsm Nv filed Critical Dsm Nv
Application granted granted Critical
Publication of EG21897A publication Critical patent/EG21897A/xx

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
    • C07D251/62—Purification of melamine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/14—Fractional distillation or use of a fractionation or rectification column
    • B01D3/16—Fractionating columns in which vapour bubbles through liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/14—Fractional distillation or use of a fractionation or rectification column
    • B01D3/16—Fractionating columns in which vapour bubbles through liquid
    • B01D3/22—Fractionating columns in which vapour bubbles through liquid with horizontal sieve plates or grids; Construction of sieve plates or grids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/14—Fractional distillation or use of a fractionation or rectification column
    • B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
    • B01D3/324—Tray constructions
    • B01D3/328—Sealing between the column and the trays
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Phenolic Resins Or Amino Resins (AREA)
  • Gas Separation By Absorption (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Degasification And Air Bubble Elimination (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Distillation Of Fermentation Liquor, Processing Of Alcohols, Vinegar And Beer (AREA)
  • Compounds Of Unknown Constitution (AREA)
EG80199A 1998-10-14 1999-07-03 Method for prepararing melamine EG21897A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1010316A NL1010316C2 (nl) 1998-10-14 1998-10-14 Werkwijze voor de bereiding van melamine.

Publications (1)

Publication Number Publication Date
EG21897A true EG21897A (en) 2002-04-30

Family

ID=19767963

Family Applications (1)

Application Number Title Priority Date Filing Date
EG80199A EG21897A (en) 1998-10-14 1999-07-03 Method for prepararing melamine

Country Status (20)

Country Link
US (1) US6548669B2 (xx)
EP (1) EP1119556B1 (xx)
JP (1) JP2002527426A (xx)
KR (1) KR100524457B1 (xx)
CN (1) CN1156458C (xx)
AT (1) ATE240946T1 (xx)
AU (1) AU753600B2 (xx)
CA (1) CA2347087C (xx)
DE (1) DE69908161T2 (xx)
EA (1) EA003323B1 (xx)
EG (1) EG21897A (xx)
ES (1) ES2200592T3 (xx)
GB (1) GB2342648B (xx)
ID (1) ID28442A (xx)
NL (1) NL1010316C2 (xx)
NO (1) NO317339B1 (xx)
PL (1) PL194903B1 (xx)
SA (1) SA99200366B1 (xx)
TW (1) TW546292B (xx)
WO (1) WO2000021940A1 (xx)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6670398B2 (en) * 1997-05-14 2003-12-30 Atherogenics, Inc. Compounds and methods for treating transplant rejection
IT1315255B1 (it) * 1999-11-16 2003-02-03 Eurotecnica Dev And Licensing Procedimento di purificazione della melammina.
AT411462B (de) 2001-12-12 2004-01-26 Agrolinz Melamin Gmbh Verfahren zur reinigung einer melaminschmelze
AT411452B (de) * 2001-12-20 2004-01-26 Agrolinz Melamin Gmbh Uv-resistenter, thermohärtbarer aminoplastverbund, dessen herstellung und verwendung
US20070284889A1 (en) * 2006-06-09 2007-12-13 Carlton Leslie Railroad track de-icing method and apparatus
ITUB20152258A1 (it) * 2015-07-17 2017-01-17 Eurotecnica Melamine Luxemburg Zweigniederlassung In Ittigen Procedimento per la produzione di melammina con separazione e recupero di CO2 e NH3 aventi elevata purezza

Family Cites Families (3)

* 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
IT1292427B1 (it) * 1997-06-27 1999-02-08 Eurotecnica Contractors And En Procedimento e apparecchiatura per la produzione di melammina
NL1008573C2 (nl) * 1998-03-12 1999-09-14 Dsm Nv Inrichting voor het uitvoeren van gas/vloeistof contact.

Also Published As

Publication number Publication date
NO20011834D0 (no) 2001-04-10
US6548669B2 (en) 2003-04-15
KR100524457B1 (ko) 2005-10-26
DE69908161T2 (de) 2004-03-25
NO317339B1 (no) 2004-10-11
EP1119556A1 (en) 2001-08-01
DE69908161D1 (de) 2003-06-26
ATE240946T1 (de) 2003-06-15
SA99200366B1 (ar) 2006-11-04
PL194903B1 (pl) 2007-07-31
JP2002527426A (ja) 2002-08-27
EP1119556B1 (en) 2003-05-21
NL1010316C2 (nl) 1999-09-23
EA003323B1 (ru) 2003-04-24
GB9910745D0 (en) 1999-07-07
GB2342648B (en) 2000-08-23
AU753600B2 (en) 2002-10-24
CN1323299A (zh) 2001-11-21
WO2000021940A1 (en) 2000-04-20
GB2342648A (en) 2000-04-19
CA2347087A1 (en) 2000-04-20
TW546292B (en) 2003-08-11
NL1010316A1 (nl) 1999-08-20
CN1156458C (zh) 2004-07-07
NO20011834L (no) 2001-06-07
ID28442A (id) 2001-05-24
PL347174A1 (en) 2002-03-25
EA200100435A1 (ru) 2001-10-22
US20020004597A1 (en) 2002-01-10
ES2200592T3 (es) 2004-03-01
AU4294299A (en) 2000-05-01
KR20010080115A (ko) 2001-08-22
CA2347087C (en) 2008-12-30

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