AT335485B - Verfahren zur herstellung eines harnstoff-formaldehyd-dungers - Google Patents

Verfahren zur herstellung eines harnstoff-formaldehyd-dungers

Info

Publication number
AT335485B
AT335485B AT352875A AT352875A AT335485B AT 335485 B AT335485 B AT 335485B AT 352875 A AT352875 A AT 352875A AT 352875 A AT352875 A AT 352875A AT 335485 B AT335485 B AT 335485B
Authority
AT
Austria
Prior art keywords
dunger
formaldehyde
urea
producing
formaldehyde dunger
Prior art date
Application number
AT352875A
Other languages
German (de)
English (en)
Other versions
ATA352875A (de
Original Assignee
Saarbergwerke Ag
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 Saarbergwerke Ag filed Critical Saarbergwerke Ag
Publication of ATA352875A publication Critical patent/ATA352875A/de
Application granted granted Critical
Publication of AT335485B publication Critical patent/AT335485B/de

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
    • C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
    • C08G12/10—Condensation 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
    • C08G12/12—Ureas; Thioureas
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C9/00—Fertilisers containing urea or urea compounds
    • C05C9/02—Fertilisers containing urea or urea compounds containing urea-formaldehyde condensates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Fertilizers (AREA)
  • Phenolic Resins Or Amino Resins (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
AT352875A 1974-05-08 1975-05-07 Verfahren zur herstellung eines harnstoff-formaldehyd-dungers AT335485B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742422238 DE2422238C2 (de) 1974-05-08 1974-05-08 Verfahren zur Herstellung eines Harnstoff-Formaldehyd-Düngers

Publications (2)

Publication Number Publication Date
ATA352875A ATA352875A (de) 1976-07-15
AT335485B true AT335485B (de) 1977-03-10

Family

ID=5914975

Family Applications (1)

Application Number Title Priority Date Filing Date
AT352875A AT335485B (de) 1974-05-08 1975-05-07 Verfahren zur herstellung eines harnstoff-formaldehyd-dungers

Country Status (5)

Country Link
AT (1) AT335485B (ro)
CH (1) CH610288A5 (ro)
DE (1) DE2422238C2 (ro)
FR (1) FR2270221B1 (ro)
NL (1) NL181362C (ro)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1152197B (it) * 1982-05-27 1986-12-31 Montedison Spa Procedimento per la preparazione di fertilizzanti a lenta cessione di azoto
DE3539631C2 (de) * 1985-11-08 1997-07-31 Basf Ag Verfahren zur Herstellung von Oligomethylenharnstoffgemischen
IT1301970B1 (it) * 1998-07-30 2000-07-20 Sadepan Chimica S A S Di Savio Procedimento per la formulazione di un fertilizzante azotato stabilein forma liquida per un rilascio dell'azoto protratto nel tempo.
EP1195365A1 (de) 2000-09-21 2002-04-10 Agra Dünger GmbH Verfahren zur Herstellung von Methylenharnstoff-Polymeren
BR0308607B1 (pt) * 2002-03-26 2013-07-16 método de produzir um polímero de ureia-formaldeído em partículas
CN115024188B (zh) * 2022-01-21 2024-02-23 江苏省农业科学院 一种氮缓释型秸秆育秧基质盘的制备方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE528582C (de) * 1929-10-08 1931-07-09 I G Farbenindustrie Akt Ges Verfahren zur Herstellung von kristallisierten Kondensationsprodukten aus Formaldehyd und Harnstoffen

Also Published As

Publication number Publication date
DE2422238C2 (de) 1987-03-26
DE2422238A1 (de) 1975-11-27
CH610288A5 (en) 1979-04-12
FR2270221A1 (ro) 1975-12-05
NL181362C (nl) 1987-08-03
FR2270221B1 (ro) 1981-10-09
ATA352875A (de) 1976-07-15
NL7505402A (nl) 1975-11-11
NL181362B (nl) 1987-03-02

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee
ELJ Ceased due to non-payment of the annual fee