DE859149C - Verfahren zur Herstellung von Melamin - Google Patents
Verfahren zur Herstellung von MelaminInfo
- Publication number
- DE859149C DE859149C DEP39113D DEP0039113D DE859149C DE 859149 C DE859149 C DE 859149C DE P39113 D DEP39113 D DE P39113D DE P0039113 D DEP0039113 D DE P0039113D DE 859149 C DE859149 C DE 859149C
- Authority
- DE
- Germany
- Prior art keywords
- ammonia
- urea
- carbon dioxide
- pressure
- water
- 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
Links
- 229920000877 Melamine resin Polymers 0.000 title claims description 17
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 title claims description 17
- 238000000034 method Methods 0.000 title claims description 15
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 48
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 46
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 32
- 239000004202 carbamide Substances 0.000 claims description 32
- 229910021529 ammonia Inorganic materials 0.000 claims description 24
- 238000006243 chemical reaction Methods 0.000 claims description 24
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 23
- 239000001569 carbon dioxide Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 229910001868 water Inorganic materials 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000006227 byproduct Substances 0.000 claims description 5
- 239000000376 reactant Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 1
- 241000589614 Pseudomonas stutzeri Species 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- -1 calcium chloride Chemical compound 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000012024 dehydrating agents Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
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
- C07C273/04—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 from carbon dioxide and ammonia
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 |
|---|---|---|---|
| US21035A US2527315A (en) | 1948-04-14 | 1948-04-14 | Preparation of urea |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE859149C true DE859149C (de) | 1952-12-11 |
Family
ID=21801944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEP39113D Expired DE859149C (de) | 1948-04-14 | 1949-04-07 | Verfahren zur Herstellung von Melamin |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2527315A (en, 2012) |
| BE (1) | BE488455A (en, 2012) |
| DE (1) | DE859149C (en, 2012) |
| FR (1) | FR984223A (en, 2012) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1039522B (de) * | 1955-03-12 | 1958-09-25 | Montedison Spa | Verfahren zur kontinuierlichen Herstellung von Melamin aus wasserfreiem Harnstoff |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2769005A (en) * | 1956-10-30 | Process for the preparation of melamine | ||
| US2717201A (en) * | 1950-10-23 | 1955-09-06 | Kellogg M W Co | Production of hydrazine |
| US2675301A (en) * | 1950-10-23 | 1954-04-13 | Kellogg M W Co | Production of hydrazine |
| US2762843A (en) * | 1952-01-12 | 1956-09-11 | Boivin Jean Louis | Synthesis of guanidine from so co, and nh |
| US2933526A (en) * | 1956-02-25 | 1960-04-19 | Lonza Electric & Chem Works | Process for the manufacture of urea in granular form |
| US2916516A (en) * | 1956-03-09 | 1959-12-08 | Basf Ag | Evaporation of aqueous urea solutions |
| US2933527A (en) * | 1956-04-13 | 1960-04-19 | Lonza Electric & Chem Works | Process for the manufacture of urea in granular form |
| US2854482A (en) * | 1956-07-07 | 1958-09-30 | Lonza Electric & Chem Works | Process for the manufacture of urea |
| US3030193A (en) * | 1957-10-31 | 1962-04-17 | Montedison Spa | Reactor for preparing melamine |
| US3232982A (en) * | 1960-01-08 | 1966-02-01 | Pullman Inc | Urea synthesis |
| US3232983A (en) * | 1960-01-08 | 1966-02-01 | Pullman Inc | Urea synthesis |
| US3239522A (en) * | 1963-03-12 | 1966-03-08 | Chemical Construction Corp | Synthesis of urea and melamine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1923489A (en) * | 1928-06-27 | 1933-08-22 | Herbert J Krase | Synthesis of urea |
| US1937116A (en) * | 1931-01-02 | 1933-11-28 | Du Pont | Urea manufacture |
| US2267133A (en) * | 1939-02-20 | 1941-12-23 | Solvay Process Co | Process for treating urea synthesis effluents |
-
0
- BE BE488455D patent/BE488455A/xx unknown
-
1948
- 1948-04-14 US US21035A patent/US2527315A/en not_active Expired - Lifetime
-
1949
- 1949-04-05 FR FR984223D patent/FR984223A/fr not_active Expired
- 1949-04-07 DE DEP39113D patent/DE859149C/de not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1039522B (de) * | 1955-03-12 | 1958-09-25 | Montedison Spa | Verfahren zur kontinuierlichen Herstellung von Melamin aus wasserfreiem Harnstoff |
Also Published As
| Publication number | Publication date |
|---|---|
| FR984223A (fr) | 1951-07-03 |
| BE488455A (en, 2012) | |
| US2527315A (en) | 1950-10-24 |
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