ATE32510T1 - Verfahren zur verdichtung von schon konzentrierten harnstoffloesungen zu einer praktisch wasserfreien schmelze. - Google Patents

Verfahren zur verdichtung von schon konzentrierten harnstoffloesungen zu einer praktisch wasserfreien schmelze.

Info

Publication number
ATE32510T1
ATE32510T1 AT84114748T AT84114748T ATE32510T1 AT E32510 T1 ATE32510 T1 AT E32510T1 AT 84114748 T AT84114748 T AT 84114748T AT 84114748 T AT84114748 T AT 84114748T AT E32510 T1 ATE32510 T1 AT E32510T1
Authority
AT
Austria
Prior art keywords
practically anhydrous
urea solutions
anhydrous melt
urea
concentrated urea
Prior art date
Application number
AT84114748T
Other languages
German (de)
English (en)
Inventor
Cornelis Verweel
Original Assignee
Stamicarbon
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19842845&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE32510(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Stamicarbon filed Critical Stamicarbon
Application granted granted Critical
Publication of ATE32510T1 publication Critical patent/ATE32510T1/de

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/02—Preparation 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
    • C07C273/14—Separation; Purification; Stabilisation; Use of additives
    • C07C273/16—Separation; Purification
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Fertilizers (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
AT84114748T 1983-12-07 1984-12-04 Verfahren zur verdichtung von schon konzentrierten harnstoffloesungen zu einer praktisch wasserfreien schmelze. ATE32510T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8304211A NL8304211A (nl) 1983-12-07 1983-12-07 Werkwijze voor het concentreren tot een practisch watervrije smelt van een reeds geconcentreerde ureumoplossing.
EP84114748A EP0144964B1 (en) 1983-12-07 1984-12-04 Process for concentrating an already concentrated urea solution to form a practically anhydrous melt

Publications (1)

Publication Number Publication Date
ATE32510T1 true ATE32510T1 (de) 1988-03-15

Family

ID=19842845

Family Applications (1)

Application Number Title Priority Date Filing Date
AT84114748T ATE32510T1 (de) 1983-12-07 1984-12-04 Verfahren zur verdichtung von schon konzentrierten harnstoffloesungen zu einer praktisch wasserfreien schmelze.

Country Status (8)

Country Link
EP (1) EP0144964B1 (enExample)
JP (1) JPS60185756A (enExample)
AT (1) ATE32510T1 (enExample)
CA (1) CA1244052A (enExample)
DE (1) DE3469356D1 (enExample)
IN (1) IN163016B (enExample)
NL (1) NL8304211A (enExample)
SU (1) SU1428192A3 (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0302213A1 (en) * 1987-08-04 1989-02-08 Ammonia Casale S.A. Process for the recovery of urea entrained by vapours in vacuum concentration systems

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1184991A (fr) * 1956-10-26 1959-07-28 Stamicarbon Procédé pour concentrer des solutions d'urée en une masse sensiblement exempte d'eau
ES238105A1 (es) * 1956-10-26 1958-04-01 Stamicarbon UN PROCEDIMIENTO PARA LA PRODUCCIoN DE UREA SUSTANCIALMENTE ANHIDRA

Also Published As

Publication number Publication date
JPS60185756A (ja) 1985-09-21
CA1244052A (en) 1988-11-01
IN163016B (enExample) 1988-07-30
SU1428192A3 (ru) 1988-09-30
DE3469356D1 (en) 1988-03-24
EP0144964B1 (en) 1988-02-17
EP0144964A3 (en) 1985-07-17
NL8304211A (nl) 1985-07-01
EP0144964A2 (en) 1985-06-19

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
RZN Patent revoked