BE450974A - - Google Patents

Info

Publication number
BE450974A
BE450974A BE450974DA BE450974A BE 450974 A BE450974 A BE 450974A BE 450974D A BE450974D A BE 450974DA BE 450974 A BE450974 A BE 450974A
Authority
BE
Belgium
Prior art keywords
lead
corrosion
urea
emi
ammonia
Prior art date
Application number
Other languages
English (en)
French (fr)
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.)
Publication of BE450974A publication Critical patent/BE450974A/fr

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/02Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
    • C07C273/04Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds from carbon dioxide and ammonia
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C275/00Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C275/04Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/141Feedstock

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)
BE450974D 1940-09-24 BE450974A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE238331X 1940-09-24

Publications (1)

Publication Number Publication Date
BE450974A true BE450974A (enrdf_load_stackoverflow)

Family

ID=5903516

Family Applications (1)

Application Number Title Priority Date Filing Date
BE450974D BE450974A (enrdf_load_stackoverflow) 1940-09-24

Country Status (3)

Country Link
BE (1) BE450974A (enrdf_load_stackoverflow)
CH (1) CH238331A (enrdf_load_stackoverflow)
FR (1) FR895394A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
CH238331A (de) 1945-07-15
FR895394A (fr) 1945-01-23

Similar Documents

Publication Publication Date Title
FR2447394A1 (fr) Procede et composition de revetement protecteur pour substrat metallique
CN100363526C (zh) 耐蚀性好的锌铝镁镀层钢材生产方法及锌铝镁镀层钢材
FR2672058A1 (fr) Composition d'inhibiteur de la corrosion des metaux ferreux, procede pour sa preparation, et son utilisation.
CN1052317A (zh) 水性带锈涂料
CH260309A (fr) Procédé pour l'obtention d'un revêtement sur des surfaces métalliques.
BE424906A (fr) Moyen pour le traitement de zinc et d'alliages de zinc
BE450974A (enrdf_load_stackoverflow)
CH260320A (fr) Procédé pour l'obtention d'un revêtement protecteur insoluble sur des surfaces métalliques à l'aide d'une solution phosphatante acide.
FR2564478A1 (fr) Additifs aqueux inhibiteurs de corrosion et procede pour leur preparation
US1565536A (en) Process of removing rust
FR2466514A1 (fr) Procede pour controler la corrosion des surfaces en fer et en acier dans des systemes aqueux, et complexe aluminium-acide gluconique inhibiteur de la corrosion
US1405167A (en) Lead-coating process
CH385700A (fr) Procédé d'enrobage de substances métalliques granuleuses ou poudreuses destinées à former un mélange explosif
GB1110530A (en) Process for the purification of coating lubricant
CH651059A5 (en) Process for the treatment of a noncorrosive salt employed for combatting black ice
BE404183A (fr) Procede permettant d'appliquer a des metaux des revetements de phosphates assurant la protection contre la rouille
US1567066A (en) Nickel-copper alloy
BE1001732A6 (fr) Procede de traitement chimique de pieces metalliques.
CH346087A (fr) Procédé pour inhiber ou réduire l'agressivité d'acides concentrés vis-à-vis de métaux et composition pour la mise en oeuvre de ce procédé
CH242705A (fr) Liquide pour rendre difficilement congelable l'eau et procédé pour le fabriquer.
BE891163A (fr) Perfectionnements aux procedes de traitement de produits en acier
US1535340A (en) Rust-resisting mild steel and process of producing the same
GB191029504A (en) Improvements in and relating to the Treatment of Iron or Steel for the Prevention of Oxidation or Rust.
CH207041A (fr) Procédé pour la formation de surfaces de corrosion sur l'aluminium et alliages d'aluminium.
LU84471A1 (fr) Perfectionnements aux procedes de traitement de produits en acier