BE639788A - - Google Patents
Info
- Publication number
- BE639788A BE639788A BE639788DA BE639788A BE 639788 A BE639788 A BE 639788A BE 639788D A BE639788D A BE 639788DA BE 639788 A BE639788 A BE 639788A
- Authority
- BE
- Belgium
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
- C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
- C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
- C07D251/40—Nitrogen atoms
- C07D251/54—Three nitrogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
- C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
- C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
- C07D251/40—Nitrogen atoms
- C07D251/54—Three nitrogen atoms
- C07D251/62—Purification of melamine
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
- C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
- C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
- C07D251/40—Nitrogen atoms
- C07D251/54—Three nitrogen atoms
- C07D251/56—Preparation of melamine
- C07D251/60—Preparation of melamine from urea or from carbon dioxide and ammonia
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
- C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
- C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
- C07D251/40—Nitrogen atoms
- C07D251/54—Three nitrogen atoms
- C07D251/70—Other substituted melamines
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 |
|---|---|---|---|
| US284023A US3250773A (en) | 1963-05-29 | 1963-05-29 | Purification of melamine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE639788A true BE639788A (pl) |
Family
ID=23088563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE639788D BE639788A (pl) | 1963-05-29 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3250773A (pl) |
| BE (1) | BE639788A (pl) |
| DE (1) | DE1244789B (pl) |
| GB (1) | GB1004377A (pl) |
| NL (1) | NL300343A (pl) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1315265B1 (it) * | 1999-12-22 | 2003-02-03 | Eurotecnica Dev And Licensing | Processo per la produzione con altre rese di melammina ad elevatapurezza |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2918467A (en) * | 1959-12-22 | Production of melamine | ||
| US2647119A (en) * | 1953-07-28 | Office | ||
| CA503463A (en) * | 1954-06-01 | Alban J. Lobdell, Jr. | Purification of melamine | |
| US2863869A (en) * | 1958-12-09 | Melamine purification process | ||
| BE527914A (pl) * | 1953-04-15 |
-
0
- NL NL300343D patent/NL300343A/xx unknown
- BE BE639788D patent/BE639788A/xx unknown
-
1963
- 1963-05-29 US US284023A patent/US3250773A/en not_active Expired - Lifetime
- 1963-11-05 GB GB43639/63A patent/GB1004377A/en not_active Expired
- 1963-11-07 DE DEA44507A patent/DE1244789B/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB1004377A (en) | 1965-09-15 |
| DE1244789B (de) | 1967-07-20 |
| US3250773A (en) | 1966-05-10 |
| NL300343A (pl) |