ES402913A2 - Process for the manufacture of nitrilotriacetonitrile - Google Patents
Process for the manufacture of nitrilotriacetonitrileInfo
- Publication number
- ES402913A2 ES402913A2 ES402913A ES402913A ES402913A2 ES 402913 A2 ES402913 A2 ES 402913A2 ES 402913 A ES402913 A ES 402913A ES 402913 A ES402913 A ES 402913A ES 402913 A2 ES402913 A2 ES 402913A2
- Authority
- ES
- Spain
- Prior art keywords
- reaction
- mother liquor
- nitrilotriacetonitrile
- aqueous
- ammonium salt
- 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
- LJAIDEYQVIJERM-UHFFFAOYSA-N 2-[bis(cyanomethyl)amino]acetonitrile Chemical compound N#CCN(CC#N)CC#N LJAIDEYQVIJERM-UHFFFAOYSA-N 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract 9
- 238000006243 chemical reaction Methods 0.000 abstract 4
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 abstract 4
- 239000012452 mother liquor Substances 0.000 abstract 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical class N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 3
- 230000002378 acidificating effect Effects 0.000 abstract 3
- 150000003863 ammonium salts Chemical class 0.000 abstract 3
- 239000007864 aqueous solution Substances 0.000 abstract 3
- 239000002253 acid Substances 0.000 abstract 2
- 239000007795 chemical reaction product Substances 0.000 abstract 2
- 238000011084 recovery Methods 0.000 abstract 2
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 239000011260 aqueous acid Substances 0.000 abstract 1
- 239000006227 byproduct Substances 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 abstract 1
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C255/00—Carboxylic acid nitriles
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Improvements introduced in the object of the main patent No. 390,692 on the process for the preparation of nitrilotriacetonitrile by reaction of an ammonia salt and a non-oxidizing acid with formaldehyde and hydrogen cyanide in aqueous acid phase at elevated temperature and by separation of the mixture of reaction after the completion of the reaction, with recovery of crystalline nitrilotriacetonitrile on the one hand and an aqueous acidic phase in the form of mother liquor on the other hand, the reaction product of an aqueous solution of ammonium salt being reacted with an aqueous solution of formaldehyde in a molar ratio greater than 1: 6 with stochemetric amounts of an aqueous solution of hydrogen cyanide, based on the formaldehyde content of the primary reaction product, according to patent application number 390,692, characterized in that for the recovery of the acid and excess ammonium salt incorporated with pa products In the reaction process, the aqueous acidic phase, or mother liquor, released from nitrilotriacetonitrile is introduced into an evaporator, and approximately 50 to 75% by weight of the water contained in the mother liquor is evaporated, the acidic evaporation residue is adjusted Liquid, with ammonia, at a pH value of maximum 6, the oily by-products that are eventually deposited in this case are separated and the mother liquor saturated with ammonium salt is introduced again into the previous reactor. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2126881A DE2126881C3 (en) | 1971-05-29 | 1971-05-29 | Process for the continuous production of nitrilotriacetonitrile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES402913A2 true ES402913A2 (en) | 1975-04-16 |
Family
ID=5809352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES402913A Expired ES402913A2 (en) | 1971-05-29 | 1972-05-18 | Process for the manufacture of nitrilotriacetonitrile |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS5527049B1 (en) |
| BE (1) | BE784116R (en) |
| BR (1) | BR7203438D0 (en) |
| CA (1) | CA975799A (en) |
| CH (1) | CH562783A5 (en) |
| DE (1) | DE2126881C3 (en) |
| ES (1) | ES402913A2 (en) |
| FR (1) | FR2140056B2 (en) |
| GB (1) | GB1334991A (en) |
| IT (1) | IT1045691B (en) |
| NL (1) | NL174141C (en) |
| NO (1) | NO136975C (en) |
| SE (1) | SE389863B (en) |
| ZA (1) | ZA722985B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3362309D1 (en) * | 1982-08-30 | 1986-04-03 | Monsanto Co | Process for producing nitrilotriacetonitrile |
| EP0102343B1 (en) * | 1982-08-30 | 1986-02-26 | Monsanto Company | Process for producing nitrilotriacetonitrile |
| DE3362310D1 (en) * | 1982-08-30 | 1986-04-03 | Monsanto Co | Continuous process for producing nitrilotriacetonitrile |
-
1971
- 1971-05-29 DE DE2126881A patent/DE2126881C3/en not_active Expired
-
1972
- 1972-05-02 ZA ZA722985A patent/ZA722985B/en unknown
- 1972-05-04 GB GB2085272A patent/GB1334991A/en not_active Expired
- 1972-05-16 CA CA142,246A patent/CA975799A/en not_active Expired
- 1972-05-18 ES ES402913A patent/ES402913A2/en not_active Expired
- 1972-05-19 CH CH748972A patent/CH562783A5/xx not_active IP Right Cessation
- 1972-05-25 SE SE7206846A patent/SE389863B/en unknown
- 1972-05-25 IT IT50477/72A patent/IT1045691B/en active
- 1972-05-26 NL NLAANVRAGE7207164,A patent/NL174141C/en active Search and Examination
- 1972-05-26 NO NO1875/72A patent/NO136975C/en unknown
- 1972-05-29 BR BR3438/72A patent/BR7203438D0/en unknown
- 1972-05-29 BE BE784116A patent/BE784116R/en active
- 1972-05-29 JP JP5323772A patent/JPS5527049B1/ja active Pending
- 1972-05-29 FR FR727219168A patent/FR2140056B2/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NO136975B (en) | 1977-08-29 |
| DE2126881A1 (en) | 1972-11-30 |
| GB1334991A (en) | 1973-10-24 |
| BE784116R (en) | 1972-11-29 |
| NL174141C (en) | 1984-05-01 |
| SE389863B (en) | 1976-11-22 |
| CA975799A (en) | 1975-10-07 |
| DE2126881B2 (en) | 1979-09-20 |
| JPS5527049B1 (en) | 1980-07-17 |
| DE2126881C3 (en) | 1980-06-04 |
| FR2140056A2 (en) | 1973-01-12 |
| NL7207164A (en) | 1972-12-01 |
| ZA722985B (en) | 1973-02-28 |
| IT1045691B (en) | 1980-06-10 |
| CH562783A5 (en) | 1975-06-13 |
| FR2140056B2 (en) | 1973-07-13 |
| BR7203438D0 (en) | 1973-05-31 |
| NO136975C (en) | 1977-12-07 |
| NL174141B (en) | 1983-12-01 |
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