FR1127788A - Improvements in urea crystallization - Google Patents

Improvements in urea crystallization

Info

Publication number
FR1127788A
FR1127788A FR1127788DA FR1127788A FR 1127788 A FR1127788 A FR 1127788A FR 1127788D A FR1127788D A FR 1127788DA FR 1127788 A FR1127788 A FR 1127788A
Authority
FR
France
Prior art keywords
urea crystallization
crystallization
urea
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
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GRACE CHEMICAL Co
Original Assignee
GRACE CHEMICAL Co
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 GRACE CHEMICAL Co filed Critical GRACE CHEMICAL Co
Application granted granted Critical
Publication of FR1127788A publication Critical patent/FR1127788A/en
Expired legal-status Critical Current

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
FR1127788D 1954-07-20 1955-07-19 Improvements in urea crystallization Expired FR1127788A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1127788XA 1954-07-20 1954-07-20

Publications (1)

Publication Number Publication Date
FR1127788A true FR1127788A (en) 1956-12-24

Family

ID=22345794

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1127788D Expired FR1127788A (en) 1954-07-20 1955-07-19 Improvements in urea crystallization

Country Status (1)

Country Link
FR (1) FR1127788A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184508A (en) * 1962-10-18 1965-05-18 Stamicarbon Crystallization of biuret from biuretcontaining aqueous solutions saturated with urea
US3185731A (en) * 1961-10-26 1965-05-25 Stamicarbon Crystallization of urea
US3232984A (en) * 1961-11-20 1966-02-01 Pullman Inc Low biuret urea
US3251879A (en) * 1963-06-19 1966-05-17 Chemical Construction Corp Production of low-biuret urea crystals
US3255246A (en) * 1963-06-27 1966-06-07 Du Pont Synthesis and recovery of urea

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3185731A (en) * 1961-10-26 1965-05-25 Stamicarbon Crystallization of urea
US3232984A (en) * 1961-11-20 1966-02-01 Pullman Inc Low biuret urea
US3184508A (en) * 1962-10-18 1965-05-18 Stamicarbon Crystallization of biuret from biuretcontaining aqueous solutions saturated with urea
US3251879A (en) * 1963-06-19 1966-05-17 Chemical Construction Corp Production of low-biuret urea crystals
US3255246A (en) * 1963-06-27 1966-06-07 Du Pont Synthesis and recovery of urea

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