[go: up one dir, main page]

GB1225348A - - Google Patents

Info

Publication number
GB1225348A
GB1225348A GB1225348DA GB1225348A GB 1225348 A GB1225348 A GB 1225348A GB 1225348D A GB1225348D A GB 1225348DA GB 1225348 A GB1225348 A GB 1225348A
Authority
GB
United Kingdom
Prior art keywords
melamine
april
urea
product gases
molten
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
Other languages
English (en)
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 filed Critical
Publication of GB1225348A publication Critical patent/GB1225348A/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
    • 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)
  • Phenolic Resins Or Amino Resins (AREA)
GB1225348D 1968-04-22 1969-04-16 Expired GB1225348A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2673468 1968-04-22

Publications (1)

Publication Number Publication Date
GB1225348A true GB1225348A (pt) 1971-03-17

Family

ID=12201523

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1225348D Expired GB1225348A (pt) 1968-04-22 1969-04-16

Country Status (2)

Country Link
FR (1) FR2006688A1 (pt)
GB (1) GB1225348A (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2498591A1 (fr) * 1980-12-31 1982-07-30 Ugine Kuhlmann Procede continu de preparation en phase gazeuse du trichlorotrifluorethane, du dichlorotetrafluorethane et du monochloropentafluorethane en proportions controlees

Also Published As

Publication number Publication date
FR2006688A1 (pt) 1970-01-02

Similar Documents

Publication Publication Date Title
GB1326159A (en) Headgear structure
GB1175422A (en) Improvements in the Manufacture of Phosphoric Acid
ES438366A1 (es) Procedimiento integrado para la sintesis de urea y amoniaco.
GB977969A (en) Hydrogen recovery
CA992098A (en) Urea synthesis with improved heat recovery and conversion
GB940354A (en) Improvements relating to rotationally fast connection means
GB1225348A (pt)
ES8306103A1 (es) "un procedimiento mejorado para la preparacion de urea".
ES343801A1 (es) Procedimiento para la obtencion de urea cristalizada con unbajo contenido de biuret.
ES386315A1 (es) Un procedimiento para separar melamina desde una mezcla ga-seosa de sintesis, caliente.
CH471088A (it) Procedimento per la produzione di urea per sintesi da ammoniaca e anidride carbonica con riciclo totale della parte non convertita in urea
ES8106896A1 (es) Un procedimiento de preparacion de benzoxazolona
ES331003A1 (es) Procedimiento para la obtencion de melamina.
JPS5389371A (en) Heat sink
GB1204380A (en) Uranium/nitrogen compounds
Savory et al. An insertion reaction involving pentaborane (9). The synthesis of the tetradecahydrononaborate (1–) ion, B 9 H 14–
GB1051634A (pt)
GB1230259A (pt)
GB1281088A (en) Ammonia synthesis
JPS5412312A (en) Preparation of ketazine
GB1027382A (en) Improvements in or relating to cylinder locks
IE35250B1 (en) Process for dehydrating ammonia synthesis gases
GB1204456A (en) Preparation of hydroxy-capronitrile
GB1141538A (en) Columbium addition agent
BURHANS et al. Cycloaliphatic epoxy resins with improved strength and impact coupled with high heat distortion temperature(Cycloaliphatic epoxy resins toughness improvement by modification with elastomers, maintaining high heat distortion temperature)

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee