EA005552B1 - Способ для получения кристаллического меламина из расплава меламина - Google Patents

Способ для получения кристаллического меламина из расплава меламина Download PDF

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Publication number
EA005552B1
EA005552B1 EA200400425A EA200400425A EA005552B1 EA 005552 B1 EA005552 B1 EA 005552B1 EA 200400425 A EA200400425 A EA 200400425A EA 200400425 A EA200400425 A EA 200400425A EA 005552 B1 EA005552 B1 EA 005552B1
Authority
EA
Eurasian Patent Office
Prior art keywords
melamine
pressure
stage
ammonia
melt
Prior art date
Application number
EA200400425A
Other languages
English (en)
Russian (ru)
Other versions
EA200400425A1 (ru
Inventor
Тьяй Тьин Тьиу
Йоханнес Бернардус Якобус Классен
Original Assignee
ДСМ Ай Пи ЭССЕТС Б. В.
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 ДСМ Ай Пи ЭССЕТС Б. В. filed Critical ДСМ Ай Пи ЭССЕТС Б. В.
Publication of EA200400425A1 publication Critical patent/EA200400425A1/ru
Publication of EA005552B1 publication Critical patent/EA005552B1/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
    • C07D251/62—Purification of melamine
    • 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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
EA200400425A 2001-09-12 2002-09-06 Способ для получения кристаллического меламина из расплава меламина EA005552B1 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1018936A NL1018936C2 (nl) 2001-09-12 2001-09-12 Werkwijze voor het verkrijgen van kristallijn melamine uit een melaminesmelt.
PCT/EP2002/010015 WO2003022823A1 (en) 2001-09-12 2002-09-06 Process for obtaining crystalline melamine from melamine melt

Publications (2)

Publication Number Publication Date
EA200400425A1 EA200400425A1 (ru) 2004-08-26
EA005552B1 true EA005552B1 (ru) 2005-04-28

Family

ID=19773994

Family Applications (1)

Application Number Title Priority Date Filing Date
EA200400425A EA005552B1 (ru) 2001-09-12 2002-09-06 Способ для получения кристаллического меламина из расплава меламина

Country Status (6)

Country Link
EP (1) EP1425271A1 (zh)
CN (1) CN1260217C (zh)
EA (1) EA005552B1 (zh)
NL (1) NL1018936C2 (zh)
PL (1) PL368640A1 (zh)
WO (1) WO2003022823A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005021802A1 (de) * 2005-05-04 2006-11-09 Ami-Agrolinz Melamine International Gmbh Verfahren und Vorrichtung zur Kristallisation von Melamin
IT201800005382A1 (it) * 2018-05-15 2019-11-15 Procedimento e dispositivo per separare cristalli di melammina in un processo di produzione di melammina da urea

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3637686A (en) * 1969-02-10 1972-01-25 Nissan Chemical Ind Ltd Process for recovering purified melamine
JPH08333351A (ja) * 1995-06-09 1996-12-17 Mitsui Toatsu Chem Inc メラミンの精製方法
CN1130353C (zh) * 1997-05-28 2003-12-10 Dsm有限公司 制备蜜胺的方法
ES2209560T3 (es) * 1998-11-13 2004-06-16 Ami Agrolinz Melamine International Gmbh Procedimiento para la obtencion de melamina pura.

Also Published As

Publication number Publication date
PL368640A1 (en) 2005-04-04
EA200400425A1 (ru) 2004-08-26
CN1553902A (zh) 2004-12-08
WO2003022823A1 (en) 2003-03-20
CN1260217C (zh) 2006-06-21
EP1425271A1 (en) 2004-06-09
NL1018936C2 (nl) 2003-03-13

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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): AZ KZ KG MD TJ TM