NL193832B - High pressure process for the preparation of melamine. - Google Patents

High pressure process for the preparation of melamine.

Info

Publication number
NL193832B
NL193832B NL8403843A NL8403843A NL193832B NL 193832 B NL193832 B NL 193832B NL 8403843 A NL8403843 A NL 8403843A NL 8403843 A NL8403843 A NL 8403843A NL 193832 B NL193832 B NL 193832B
Authority
NL
Netherlands
Prior art keywords
melamine
preparation
high pressure
pressure process
pressure
Prior art date
Application number
NL8403843A
Other languages
Dutch (nl)
Other versions
NL193832C (en
NL8403843A (en
Original Assignee
Dsm Melamine Bv
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 Bv filed Critical Dsm Melamine Bv
Publication of NL8403843A publication Critical patent/NL8403843A/en
Publication of NL193832B publication Critical patent/NL193832B/en
Application granted granted Critical
Publication of NL193832C publication Critical patent/NL193832C/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/04—Pressure vessels, e.g. autoclaves
    • B01J3/042—Pressure vessels, e.g. autoclaves in the form of a tube
    • 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
NL8403843A 1984-01-05 1984-12-19 High pressure process for the preparation of melamine. NL193832C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US56840884A 1984-01-05 1984-01-05
US56840884 1984-01-05

Publications (3)

Publication Number Publication Date
NL8403843A NL8403843A (en) 1985-08-01
NL193832B true NL193832B (en) 2000-08-01
NL193832C NL193832C (en) 2000-12-04

Family

ID=24271166

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8403843A NL193832C (en) 1984-01-05 1984-12-19 High pressure process for the preparation of melamine.

Country Status (16)

Country Link
JP (2) JPS60208970A (en)
KR (1) KR920001740B1 (en)
AT (1) AT393124B (en)
AU (1) AU568469B2 (en)
BR (1) BR8500032A (en)
CA (1) CA1220476A (en)
EG (1) EG16900A (en)
ES (1) ES8606303A1 (en)
FR (1) FR2557876B1 (en)
GB (1) GB2152505B (en)
IE (1) IE57911B1 (en)
IT (1) IT1188084B (en)
MX (1) MX164901B (en)
NL (1) NL193832C (en)
NO (1) NO176795C (en)
NZ (1) NZ210678A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5514796A (en) * 1995-06-07 1996-05-07 Melamine Chemicals, Inc. Melamine of improved purity produced by high-pressure, non-catalytic process
NL1002669C2 (en) * 1996-03-21 1997-09-23 Dsm Nv Process for the preparation of melamine.
NL1003105C2 (en) * 1996-05-14 1997-11-18 Dsm Nv Process for the preparation of melamine.
NL1003328C2 (en) * 1996-06-13 1997-12-17 Dsm Nv Process for preparing melamine.
NL1003709C2 (en) * 1996-07-30 1998-02-05 Dsm Nv Process for preparing melamine.
NL1004814C2 (en) * 1996-12-18 1998-06-19 Dsm Nv High purity, white coloured melamine preparation from urea
AU5346298A (en) * 1996-12-16 1998-07-15 Dsm N.V. Method for the preparation of melamine
NL1008571C2 (en) * 1998-03-12 1999-07-28 Dsm Nv Crystalline melamine.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1670286A1 (en) * 1967-11-11 1971-01-28 Basf Ag Process for processing the waste gases produced during melamine synthesis
GB1218522A (en) * 1969-01-24 1971-01-06 Nissan Chemical Ind Ltd A process for recovering the purified melamine
NL7903473A (en) * 1979-05-03 1980-11-05 Stamicarbon METHOD FOR PREPARING MELAMINE.
NL8201479A (en) * 1982-04-07 1983-11-01 Stamicarbon METHOD FOR PREPARING MELAMINE.

Also Published As

Publication number Publication date
KR920001740B1 (en) 1992-02-24
ES539126A0 (en) 1986-04-16
JPH0925271A (en) 1997-01-28
IE843247L (en) 1985-07-05
NO176795B (en) 1995-02-20
BR8500032A (en) 1985-08-13
IT1188084B (en) 1987-12-30
NO845248L (en) 1985-07-08
GB2152505A (en) 1985-08-07
NO176795C (en) 1995-05-31
IE57911B1 (en) 1993-05-19
IT8583302A0 (en) 1985-01-04
AU568469B2 (en) 1987-12-24
MX164901B (en) 1992-09-30
NL193832C (en) 2000-12-04
NL8403843A (en) 1985-08-01
ES8606303A1 (en) 1986-04-16
JPS60208970A (en) 1985-10-21
KR850005425A (en) 1985-08-26
GB8500197D0 (en) 1985-02-13
GB2152505B (en) 1987-07-29
FR2557876B1 (en) 1991-04-19
ATA2185A (en) 1991-01-15
FR2557876A1 (en) 1985-07-12
AU3737685A (en) 1985-07-18
JPH0557984B2 (en) 1993-08-25
JP2757163B2 (en) 1998-05-25
CA1220476A (en) 1987-04-14
EG16900A (en) 1990-10-30
NZ210678A (en) 1987-03-06
AT393124B (en) 1991-08-26

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Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
CNR Transfer of rights (patent application after its laying open for public inspection)

Free format text: DSM MELAMINE B.V.

V4 Discontinued because of reaching the maximum lifetime of a patent

Effective date: 20041219