BE835105A - Procede de preparation de solutions aqueuses concentrees de formaldehyde et d'uree - Google Patents

Procede de preparation de solutions aqueuses concentrees de formaldehyde et d'uree

Info

Publication number
BE835105A
BE835105A BE161453A BE161453A BE835105A BE 835105 A BE835105 A BE 835105A BE 161453 A BE161453 A BE 161453A BE 161453 A BE161453 A BE 161453A BE 835105 A BE835105 A BE 835105A
Authority
BE
Belgium
Prior art keywords
formaldehyde
urea
aqueous solutions
concentrated aqueous
preparing concentrated
Prior art date
Application number
BE161453A
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.)
Filing date
Publication date
Application filed filed Critical
Publication of BE835105A publication Critical patent/BE835105A/xx

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G12/00Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08G12/02Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
    • C08G12/04Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
    • C08G12/10Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with acyclic compounds having the moiety X=C(—N<)2 in which X is O, S or —N
    • C08G12/12Ureas; Thioureas
    • 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
    • C07C273/025Preparation 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 of solutions of urea and formaldehyde

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Phenolic Resins Or Amino Resins (AREA)
BE161453A 1974-11-02 1975-10-31 Procede de preparation de solutions aqueuses concentrees de formaldehyde et d'uree BE835105A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742451990 DE2451990C3 (de) 1974-11-02 1974-11-02 Verfahren zur Herstellung von konzentrierten, wäßrigen Lösungen von Formaleyhd und Harnstoff

Publications (1)

Publication Number Publication Date
BE835105A true BE835105A (fr) 1976-04-30

Family

ID=5929817

Family Applications (1)

Application Number Title Priority Date Filing Date
BE161453A BE835105A (fr) 1974-11-02 1975-10-31 Procede de preparation de solutions aqueuses concentrees de formaldehyde et d'uree

Country Status (7)

Country Link
JP (1) JPS5170727A (xx)
BE (1) BE835105A (xx)
DE (1) DE2451990C3 (xx)
FR (1) FR2289537A1 (xx)
GB (1) GB1517366A (xx)
IT (1) IT1044595B (xx)
NL (1) NL7512814A (xx)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2411850A1 (fr) * 1977-12-19 1979-07-13 Reichhold Chemicals Inc Procede de production continue de solutions aqueuses d'uree et de formaldehyde
DE2914135A1 (de) * 1979-04-07 1980-10-23 Basf Ag Verfahren zur gleichzeitigen herstellung von konzentrierten, waessrigen formaldehyd/harnstoff-loesungen und formaldehydloesungen
DE3152005A1 (de) * 1981-12-31 1983-07-07 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von konzentrierten, waessrigen loesungen von formaldehyd und harnstoff
EP3585515A1 (de) 2017-02-24 2020-01-01 Basf Se Silber-katalysatorsystem mit verringertem druckabfall zur oxidativen dehydrierung von alkoholen
EP3539657A1 (en) 2018-03-14 2019-09-18 Basf Se Improved catalysts comprising silver based intermetallic compounds

Also Published As

Publication number Publication date
DE2451990B2 (de) 1980-07-31
GB1517366A (en) 1978-07-12
FR2289537A1 (fr) 1976-05-28
NL7512814A (nl) 1976-05-04
DE2451990C3 (de) 1981-04-09
JPS5170727A (en) 1976-06-18
DE2451990A1 (de) 1976-05-13
IT1044595B (it) 1980-03-31
FR2289537B1 (xx) 1979-07-06

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Legal Events

Date Code Title Description
RE20 Patent expired

Owner name: BASF A.G.

Effective date: 19951031