GB998136A - Preparation of melamine - Google Patents

Preparation of melamine

Info

Publication number
GB998136A
GB998136A GB5181/62A GB518162A GB998136A GB 998136 A GB998136 A GB 998136A GB 5181/62 A GB5181/62 A GB 5181/62A GB 518162 A GB518162 A GB 518162A GB 998136 A GB998136 A GB 998136A
Authority
GB
United Kingdom
Prior art keywords
melamine
preparation
urea
catalyst material
catalyst
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB5181/62A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stamicarbon BV
Original Assignee
Stamicarbon 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 Stamicarbon BV filed Critical Stamicarbon BV
Publication of GB998136A publication Critical patent/GB998136A/en
Expired legal-status Critical Current

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
    • 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)

Abstract

Melamine is made by heating urea and/or one or more pyrolysis products thereof in the presence of ammonia and a catalyst comprising BPO4 and/or AlPO4 adsorbed on a carrier, e.g. SiO2, Al2O3 or C. Examples describe the preparation of melamine using two reactors, the first of which has a fluidized bed of catalyst material and the other a fixed bed of catalyst material, passage of urea amounting to 100 gms./hour. Suitable reaction temperatures are above 220 DEG C., e.g. 350 DEG C. Specifications 767,344, 910,197, 910,198, 915,234, 926,594 and 969,298 are referred to.
GB5181/62A 1961-02-09 1962-02-09 Preparation of melamine Expired GB998136A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL261039 1961-02-09

Publications (1)

Publication Number Publication Date
GB998136A true GB998136A (en) 1965-07-14

Family

ID=19752865

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5181/62A Expired GB998136A (en) 1961-02-09 1962-02-09 Preparation of melamine

Country Status (3)

Country Link
BE (1) BE613729A (en)
CH (1) CH416655A (en)
GB (1) GB998136A (en)

Also Published As

Publication number Publication date
CH416655A (en) 1966-07-15
BE613729A (en) 1962-08-09

Similar Documents

Publication Publication Date Title
GB998136A (en) Preparation of melamine
CA715119A (en) Process for preparing acrylonitrile by catalytic synthesis from olefins, ammonia and oxygen
GB910197A (en) Preparation of melamine
GB910198A (en) Preparation of melamine
GB1092762A (en) Production of melamine
DE3072019D1 (en) Preparation of benzoxazolone
GB1036145A (en) Production of adiponitrile
Martin et al. Effect of gamma radiation on various petrochemical reactions: semi-annual report, July, 1956 to January, 1957
GB947842A (en) Improved process for the preparation of nitrocyclohexane
GB1092662A (en) Vaporizing urea for production of melamine
ES270039A1 (en) A procedure for the obtaining of melamine (Machine-translation by Google Translate, not legally binding)
BE595200A (en) Process for the preparation of modified melamine resins.
GB992871A (en) Adsorption process and regeneration process using a zeolite
CA616743A (en) Hydrocarbon conversion by fluidized catalyst process
GB951924A (en) Process for the preparation of carbamyl chloride
AU1789162A (en) Fluidized process for forming catalyst pellets
GB904418A (en) Production of acrylonitrile
AU273629B2 (en) High temperature fluidized calcination process
CA571674A (en) Derivatives of aldehyde condensation products of the aminotriazine or urea group, and their manufacture and use
ARAKAWA et al. Experimental studies on canine distemper virus (CDV). Report 1. Experiment on the isolation of the virus in mice and embroyonated eggs and the relation of the mouse-adapted CDV to mouse-fixed measles virus and others
GB930092A (en) Improvements in and relating to xylene isomerisation processes
CA621567A (en) Arrangement for the gas-tight, unilateral fastening of reaction tubes exposed to high temperatures
AU1741062A (en) High temperature fluidized calcination process
GB1030587A (en) Production of melamine from urea
CA588268A (en) Method of preparing hydrocyanic acid by reacting hydrocarbons with ammonia in the catalyst bed