RO118201B1 - Procedeu de purificare a melaminei - Google Patents

Procedeu de purificare a melaminei

Info

Publication number
RO118201B1
RO118201B1 RO96-01160A RO9601160A RO118201B1 RO 118201 B1 RO118201 B1 RO 118201B1 RO 9601160 A RO9601160 A RO 9601160A RO 118201 B1 RO118201 B1 RO 118201B1
Authority
RO
Romania
Prior art keywords
melamine
clearing
barrs
unclear
ammonia
Prior art date
Application number
RO96-01160A
Other languages
English (en)
Inventor
David Best
Amit Gupta
Original Assignee
Dsm Melamine B.V.
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 Melamine B.V. filed Critical Dsm Melamine B.V.
Publication of RO118201B1 publication Critical patent/RO118201B1/ro

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Procedeul conform invenţiei constă în aceea că se alimentează melamina impură în reactor, se încălzeşte la temperatura de 121...538°C şi la presiune de 41,4...206,9 bari, în prezenţă de amoniac, după care se recuperează melamina cu puritate de peste 99%.
RO96-01160A 1995-06-07 1996-06-06 Procedeu de purificare a melaminei RO118201B1 (ro)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/479,003 US5514797A (en) 1995-06-07 1995-06-07 Method for increasing purity of melamine

Publications (1)

Publication Number Publication Date
RO118201B1 true RO118201B1 (ro) 2003-03-28

Family

ID=23902255

Family Applications (1)

Application Number Title Priority Date Filing Date
RO96-01160A RO118201B1 (ro) 1995-06-07 1996-06-06 Procedeu de purificare a melaminei

Country Status (14)

Country Link
US (1) US5514797A (ro)
EP (1) EP0747367A1 (ro)
JP (1) JPH08337575A (ro)
KR (1) KR970001337A (ro)
AU (1) AU5473396A (ro)
BR (1) BR9602638A (ro)
CA (1) CA2177520A1 (ro)
EG (1) EG20878A (ro)
NO (1) NO307339B1 (ro)
NZ (1) NZ286590A (ro)
PL (1) PL314674A1 (ro)
RO (1) RO118201B1 (ro)
TW (1) TW408115B (ro)
ZA (1) ZA963944B (ro)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI96028C (fi) * 1993-07-01 1996-04-25 Kemira Oy Menetelmä melamiinin valmistamiseksi
BE1008947A3 (nl) * 1994-12-01 1996-10-01 Dsm Nv Werkwijze voor de bereiding van condensatieproducten van melamine.
AT402294B (de) * 1994-12-23 1997-03-25 Agrolinz Melamin Gmbh Verfahren zur herstellung von hochreinem melamin
AT403579B (de) * 1995-12-07 1998-03-25 Agrolinz Melamin Gmbh Verfahren zur herstellung von hochreinem melamin
US6380385B1 (en) 1995-12-07 2002-04-30 Agrolinz Melanin Gmbh Process for the preparation of pure melamine
NL1003328C2 (nl) * 1996-06-13 1997-12-17 Dsm Nv Werkwijze voor het bereiden van melamine.
NL1003709C2 (nl) * 1996-07-30 1998-02-05 Dsm Nv Werkwijze voor het bereiden van melamine.
ES2197470T3 (es) 1997-05-21 2004-01-01 Dsm Ip Assets B.V. Metodo para preparar melamina.
NL1006095C2 (nl) * 1997-05-21 1998-11-25 Dsm Nv Werkwijze voor het bereiden van melamine.
KR100495264B1 (ko) 1997-05-28 2005-06-14 코닌클리즈케 디에스엠 엔.브이. 멜라민의 제조방법
NL1006147C2 (nl) * 1997-05-28 1998-12-01 Dsm Nv Werkwijze voor het bereiden van melamine.
WO1998055466A1 (en) * 1997-06-02 1998-12-10 Dsm N.V. Method for preparing melamine
NL1006192C2 (nl) * 1997-06-02 1998-12-03 Dsm Nv Werkwijze voor het bereiden van melamine.
IT1292427B1 (it) * 1997-06-27 1999-02-08 Eurotecnica Contractors And En Procedimento e apparecchiatura per la produzione di melammina
KR100575020B1 (ko) * 1998-12-23 2006-05-02 아엠이-아그로린츠 멜라민 인터내셔날 게엠베하 멜라민의 정제방법
NL1013456C2 (nl) * 1999-11-02 2001-05-03 Dsm Nv Kristallijn melamine en de toepassing in aminoformaldehydeharsen.
US20030028020A1 (en) * 2001-07-27 2003-02-06 Gupta Ram B. Process for the synthesis of high purity melamine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3116924A (en) * 1960-09-23 1964-01-07 William F Huck Sheet conveying device
US4565867A (en) * 1984-01-05 1986-01-21 Melamine Chemicals, Inc. Anhydrous high-pressure melamine synthesis
IT1270577B (it) * 1993-02-22 1997-05-06 Wladimiro Bizzotto Reattore melamina ad alta pressione
FI96028C (fi) * 1993-07-01 1996-04-25 Kemira Oy Menetelmä melamiinin valmistamiseksi
AT402295B (de) * 1994-12-23 1997-03-25 Agrolinz Melamin Gmbh Verfahren zur reinigung von melamin
AT402294B (de) * 1994-12-23 1997-03-25 Agrolinz Melamin Gmbh Verfahren zur herstellung von hochreinem melamin

Also Published As

Publication number Publication date
US5514797A (en) 1996-05-07
TW408115B (en) 2000-10-11
EG20878A (en) 2000-05-31
ZA963944B (en) 1997-01-14
JPH08337575A (ja) 1996-12-24
NO962340L (no) 1996-12-09
CA2177520A1 (en) 1996-12-08
EP0747367A1 (en) 1996-12-11
PL314674A1 (en) 1996-12-09
KR970001337A (ko) 1997-01-24
AU5473396A (en) 1996-12-19
BR9602638A (pt) 1998-04-22
NO962340D0 (no) 1996-06-05
NZ286590A (en) 1997-02-24
NO307339B1 (no) 2000-03-20

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