DK103665C - Fremgangsmåde til krystallisation af urinstof. - Google Patents
Fremgangsmåde til krystallisation af urinstof.Info
- Publication number
- DK103665C DK103665C DK456862AA DK456862A DK103665C DK 103665 C DK103665 C DK 103665C DK 456862A A DK456862A A DK 456862AA DK 456862 A DK456862 A DK 456862A DK 103665 C DK103665 C DK 103665C
- Authority
- DK
- Denmark
- Prior art keywords
- crystallization
- urea
- Prior art date
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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL270676 | 1961-10-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
DK103665C true DK103665C (da) | 1966-02-07 |
Family
ID=19753361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK456862AA DK103665C (da) | 1961-10-26 | 1962-10-23 | Fremgangsmåde til krystallisation af urinstof. |
Country Status (5)
Country | Link |
---|---|
US (1) | US3185731A (da) |
CH (1) | CH421075A (da) |
DK (1) | DK103665C (da) |
ES (1) | ES281859A1 (da) |
GB (1) | GB954341A (da) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4345099A (en) * | 1981-08-10 | 1982-08-17 | Union Oil Company Of California | Method of selectively removing biuret from urea and compositions for use therein |
US4645860A (en) * | 1983-12-30 | 1987-02-24 | Union Oil Company Of California | Biuret manufacture |
US4645859A (en) * | 1983-12-30 | 1987-02-24 | Union Oil Company Of California | Methods for purifying biuret |
US4698443A (en) * | 1985-07-10 | 1987-10-06 | Union Oil Company Of California | Biuret purification |
US4701555A (en) * | 1985-07-10 | 1987-10-20 | Union Oil Company Of California | Methods for removing biuret from urea by adsorption |
US4682999A (en) * | 1985-10-31 | 1987-07-28 | Union Oil Company Of California | Methods for enhancing the productivity of plants |
EP4015503A1 (en) * | 2020-12-16 | 2022-06-22 | Casale Sa | Process for producing urea and biuret |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1127788A (fr) * | 1954-07-20 | 1956-12-24 | Grace Chemical Company | Perfectionnements apportés à la cristallisation de l'urée |
-
1962
- 1962-10-18 US US231593A patent/US3185731A/en not_active Expired - Lifetime
- 1962-10-23 DK DK456862AA patent/DK103665C/da active
- 1962-10-24 CH CH1250662A patent/CH421075A/de unknown
- 1962-10-25 ES ES281859A patent/ES281859A1/es not_active Expired
- 1962-10-25 GB GB40500/62A patent/GB954341A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
ES281859A1 (es) | 1963-04-16 |
US3185731A (en) | 1965-05-25 |
CH421075A (de) | 1966-09-30 |
GB954341A (en) | 1964-04-02 |
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