EA200100952A1 - Способ получения меламина - Google Patents

Способ получения меламина

Info

Publication number
EA200100952A1
EA200100952A1 EA200100952A EA200100952A EA200100952A1 EA 200100952 A1 EA200100952 A1 EA 200100952A1 EA 200100952 A EA200100952 A EA 200100952A EA 200100952 A EA200100952 A EA 200100952A EA 200100952 A1 EA200100952 A1 EA 200100952A1
Authority
EA
Eurasian Patent Office
Prior art keywords
melamine
ammonia
melt
cooled
powder
Prior art date
Application number
EA200100952A
Other languages
English (en)
Other versions
EA003141B1 (ru
Inventor
Тьяй Тьин Тьиу
Original Assignee
Дсм Н.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 Н.В. filed Critical Дсм Н.В.
Publication of EA200100952A1 publication Critical patent/EA200100952A1/ru
Publication of EA003141B1 publication Critical patent/EA003141B1/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Phenolic Resins Or Amino Resins (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Paper (AREA)
  • Fertilizers (AREA)

Abstract

Способ получения меламина из мочевины под высоким давлением, в котором твердый меламин получают подачей расплава меламина в расширительный сосуд, где расплав меламина охлаждается введенным аммиаком. К расплаву меламина добавляют избыточный газообразный аммиак, чтобы получить смесь газ/жидкость, имеющую массовое отношение, по меньшей мере, 0,01. Данную двухфазную смесь затем распыляют через распылительное устройство в расширительный сосуд, имеющий аммиачную среду с пониженным давлением аммиака. Расплав меламина охлаждается и отверждается за счет расширения и испарения введенного аммиака для образования порошка меламина. В результате расплав меламина напрямую превращается в порошок меламина, после чего порошок меламина дополнительно охлаждают и давление аммиака сбрасывают.Международная заявка была опубликована вместе с отчетом о международном поиске.
EA200100952A 1999-03-08 2000-03-02 Способ получения порошкообразного меламина, имеющего высокую степень чистоты EA003141B1 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP99200675A EP1035117A1 (en) 1999-03-08 1999-03-08 Method for preparing melamine from urea
PCT/NL2000/000129 WO2000053587A1 (en) 1999-03-08 2000-03-02 Method for preparing melamine

Publications (2)

Publication Number Publication Date
EA200100952A1 true EA200100952A1 (ru) 2002-02-28
EA003141B1 EA003141B1 (ru) 2003-02-27

Family

ID=8239957

Family Applications (1)

Application Number Title Priority Date Filing Date
EA200100952A EA003141B1 (ru) 1999-03-08 2000-03-02 Способ получения порошкообразного меламина, имеющего высокую степень чистоты

Country Status (17)

Country Link
US (1) US6579980B2 (ru)
EP (2) EP1035117A1 (ru)
JP (1) JP2002539116A (ru)
KR (1) KR100621290B1 (ru)
CN (1) CN1148359C (ru)
AT (1) ATE233248T1 (ru)
AU (1) AU764140B2 (ru)
CA (1) CA2366585C (ru)
DE (1) DE60001495T2 (ru)
EA (1) EA003141B1 (ru)
ES (1) ES2193053T3 (ru)
ID (1) ID29842A (ru)
NO (1) NO319833B1 (ru)
PL (1) PL201689B1 (ru)
RO (1) RO121902B1 (ru)
TW (1) TWI272268B (ru)
WO (1) WO2000053587A1 (ru)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1022764C2 (nl) 2003-02-24 2004-08-26 Dsm Nv Natte quench.
ATE362922T1 (de) * 2004-01-17 2007-06-15 Casale Chemicals Sa Verfahren zur schonenden abkühlung und kristallisation von melamin aus einer melaminschmelze oder aus der gasphase
US7153962B1 (en) 2005-07-12 2006-12-26 Casale Chemicals S.A. Process for gently cooling and crystallizing melamine from a melamine melt or from the gaseous phase
US8563115B2 (en) 2008-08-12 2013-10-22 Xerox Corporation Protective coatings for solid inkjet applications
US8191992B2 (en) 2008-12-15 2012-06-05 Xerox Corporation Protective coatings for solid inkjet applications
US11122669B2 (en) * 2016-01-22 2021-09-14 Hayward Industries, Inc. Systems and methods for providing network connectivity and remote monitoring, optimization, and control of pool/spa equipment

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4565867A (en) * 1984-01-05 1986-01-21 Melamine Chemicals, Inc. Anhydrous high-pressure melamine synthesis
FI96028C (fi) * 1993-07-01 1996-04-25 Kemira Oy Menetelmä melamiinin valmistamiseksi
AT402294B (de) * 1994-12-23 1997-03-25 Agrolinz Melamin Gmbh Verfahren zur herstellung von hochreinem melamin
GB9511357D0 (en) 1995-06-06 1995-08-02 Johnson Matthey Plc Improved antiviral compounds
US5514796A (en) * 1995-06-07 1996-05-07 Melamine Chemicals, Inc. Melamine of improved purity produced by high-pressure, non-catalytic process
AT403579B (de) * 1995-12-07 1998-03-25 Agrolinz Melamin Gmbh Verfahren zur herstellung von hochreinem melamin
NL1002669C2 (nl) * 1996-03-21 1997-09-23 Dsm Nv Werkwijze voor de bereiding van melamine.
NL1003105C2 (nl) * 1996-05-14 1997-11-18 Dsm Nv Werkwijze voor de bereiding van melamine.
NL1003328C2 (nl) * 1996-06-13 1997-12-17 Dsm Nv Werkwijze voor het bereiden van melamine.
KR100495262B1 (ko) * 1997-05-21 2005-06-14 코닌클리즈케 디에스엠 엔.브이. 멜라민의 제조방법
CN1130353C (zh) * 1997-05-28 2003-12-10 Dsm有限公司 制备蜜胺的方法
CA2292597A1 (en) * 1997-06-02 1998-12-10 Dsm N.V. Method for preparing melamine

Also Published As

Publication number Publication date
AU764140B2 (en) 2003-08-14
WO2000053587A1 (en) 2000-09-14
TWI272268B (en) 2007-02-01
ID29842A (id) 2001-10-18
KR20010108327A (ko) 2001-12-07
PL201689B1 (pl) 2009-04-30
EP1035117A1 (en) 2000-09-13
AU2948400A (en) 2000-09-28
CA2366585C (en) 2008-10-21
RO121902B1 (ro) 2008-07-30
CN1349513A (zh) 2002-05-15
NO20014338D0 (no) 2001-09-06
EP1171429A1 (en) 2002-01-16
NO20014338L (no) 2001-10-30
JP2002539116A (ja) 2002-11-19
DE60001495T2 (de) 2003-12-18
ATE233248T1 (de) 2003-03-15
US20020007061A1 (en) 2002-01-17
US6579980B2 (en) 2003-06-17
KR100621290B1 (ko) 2006-09-13
EA003141B1 (ru) 2003-02-27
ES2193053T3 (es) 2003-11-01
CA2366585A1 (en) 2000-09-14
DE60001495D1 (de) 2003-04-03
PL351354A1 (en) 2003-04-07
NO319833B1 (no) 2005-09-19
CN1148359C (zh) 2004-05-05
EP1171429B1 (en) 2003-02-26

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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 BY KZ KG MD TJ TM

PC4A Registration of transfer of a eurasian patent by assignment
PC4A Registration of transfer of a eurasian patent by assignment
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

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