KR950701903A - Process for the production of dinitrotoluene - Google Patents
Process for the production of dinitrotolueneInfo
- Publication number
- KR950701903A KR950701903A KR1019940704594A KR19940704594A KR950701903A KR 950701903 A KR950701903 A KR 950701903A KR 1019940704594 A KR1019940704594 A KR 1019940704594A KR 19940704594 A KR19940704594 A KR 19940704594A KR 950701903 A KR950701903 A KR 950701903A
- Authority
- KR
- South Korea
- Prior art keywords
- toluene
- acid
- nitric
- absence
- reaction
- 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.)
- Ceased
Links
- 238000000034 method Methods 0.000 title claims abstract 13
- DYSXLQBUUOPLBB-UHFFFAOYSA-N 2,3-dinitrotoluene Chemical compound CC1=CC=CC([N+]([O-])=O)=C1[N+]([O-])=O DYSXLQBUUOPLBB-UHFFFAOYSA-N 0.000 title claims abstract 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract 30
- ZWWCURLKEXEFQT-UHFFFAOYSA-N dinitrogen pentaoxide Chemical compound [O-][N+](=O)O[N+]([O-])=O ZWWCURLKEXEFQT-UHFFFAOYSA-N 0.000 claims abstract 14
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract 7
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract 6
- 238000006243 chemical reaction Methods 0.000 claims abstract 6
- 239000000203 mixture Substances 0.000 claims abstract 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract 6
- 239000000010 aprotic solvent Substances 0.000 claims abstract 5
- 238000006396 nitration reaction Methods 0.000 claims abstract 5
- GAKLFAZBKQGUBO-UHFFFAOYSA-N 2-methyl-3-nitrophenol Chemical compound CC1=C(O)C=CC=C1[N+]([O-])=O GAKLFAZBKQGUBO-UHFFFAOYSA-N 0.000 claims abstract 3
- 239000007788 liquid Substances 0.000 claims abstract 3
- 230000035484 reaction time Effects 0.000 claims abstract 2
- 239000002253 acid Substances 0.000 claims 5
- 238000005292 vacuum distillation Methods 0.000 claims 3
- IUOFDOCUNLJHFO-UHFFFAOYSA-N 2-methyl-3,4-dinitrophenol Chemical class CC1=C(O)C=CC([N+]([O-])=O)=C1[N+]([O-])=O IUOFDOCUNLJHFO-UHFFFAOYSA-N 0.000 claims 1
- 229910002651 NO3 Inorganic materials 0.000 claims 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims 1
- VLZLOWPYUQHHCG-UHFFFAOYSA-N nitromethylbenzene Chemical compound [O-][N+](=O)CC1=CC=CC=C1 VLZLOWPYUQHHCG-UHFFFAOYSA-N 0.000 claims 1
- 238000005191 phase separation Methods 0.000 claims 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
- C07C201/06—Preparation of nitro compounds
- C07C201/08—Preparation of nitro compounds by substitution of hydrogen atoms by nitro groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C205/00—Compounds containing nitro groups bound to a carbon skeleton
- C07C205/06—Compounds containing nitro groups bound to a carbon skeleton having nitro groups bound to carbon atoms of six-membered aromatic rings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
본 발명은 15분 미만의 반응시간 동안 반음온도가 20 내지 30℃인 반응기에서, 질산과 물의 합량 대 톨루엔의 몰비를 10 : 1 내지 15 : 1로 사용하고, 황산의 부재하에서, 반응도중 및 반응으로 중지시키기 위해 쌍극성 비양자성 용매의 부재하에서 무수질산과 톨루엔을 반응시켜 니트로크레졸이 존재하지 않는 생성 혼합물 중의 디니트로 톨루엔을 제공하고, 이를 쌍극성 비양자성 용매의 부재하에 진공 증류시켜 생성혼합물로 부터 미반응 질산을 제거하여 디니트로톨루엔을 제공하는 무수 질산과 톨루엔과의 액상 니트로화 반응을 특징으로 하는 디니트로톨루엔을 제조하기 위한 톨루엔의 니트로화 방법에 관한 것이다.The present invention uses a molar ratio of nitric acid and water to toluene in a reactor with a halftone temperature of 20 to 30 ° C. for a reaction time of less than 15 minutes in a ratio of 10: 1 to 15: 1, in the absence of sulfuric acid, and during the reaction. Reacting nitric anhydride with toluene in the absence of a bipolar aprotic solvent to provide dinitrotoluene in the product mixture free of nitrocresol, which is vacuum distilled in the absence of a bipolar aprotic solvent to the product mixture. The present invention relates to a nitration method of toluene for producing dinitrotoluene characterized by a liquid nitration reaction of nitric anhydride and toluene to remove unreacted nitric acid to provide dinitrotoluene.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
Claims (11)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US90021392A | 1992-06-17 | 1992-06-17 | |
| US07/900,213 | 1992-06-17 | ||
| PCT/US1993/005081 WO1993025503A1 (en) | 1992-06-17 | 1993-06-01 | Process for the production of dinitrotoluene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR950701903A true KR950701903A (en) | 1995-05-17 |
Family
ID=25412168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019940704594A Ceased KR950701903A (en) | 1992-06-17 | 1993-06-01 | Process for the production of dinitrotoluene |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0649400A1 (en) |
| KR (1) | KR950701903A (en) |
| AU (1) | AU665843B2 (en) |
| BR (1) | BR9306554A (en) |
| CA (1) | CA2138391A1 (en) |
| RU (1) | RU2106338C1 (en) |
| WO (1) | WO1993025503A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10307140A1 (en) * | 2003-02-20 | 2004-09-09 | Bayer Ag | Two-stage nitration of toluene to produce dinitrotoluene has an adiabatic and then an isothermal stage so as to give heat savings and improve safety |
| RU2295953C2 (en) * | 2004-07-12 | 2007-03-27 | Тиберий Георгиевич Незбайло | Hydrophilic and hydrophobic compositions for treatment infectious or viral diseases and method for their using |
| DE102005050106B4 (en) * | 2005-10-18 | 2008-04-30 | Josef Meissner Gmbh & Co. Kg | Recovery of nitrating acid mixtures from nitrite processes |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3928395A (en) * | 1972-10-05 | 1975-12-23 | Ciba Geigy Ag | Process for the nitration of aromatic compounds |
| US4495372A (en) * | 1982-11-05 | 1985-01-22 | Uniroyal, Inc. | Preparation of mono-nitro aromatic compounds |
| US4935557A (en) * | 1984-08-07 | 1990-06-19 | Air Products And Chemicals, Inc. | Conitration of mixed aromatic hydrocarbons |
| US5001272A (en) * | 1988-06-22 | 1991-03-19 | Olin Corporation | Process for the production of dinitrotoluene |
| AU3863089A (en) * | 1988-06-22 | 1990-01-12 | Olin Corporation | Process for the production of dinitrotoluene or mononitrobenzene |
| US4918250A (en) * | 1989-04-21 | 1990-04-17 | Olin Corporation | Process for the production of dinitrotoluene using an inorganic salt as a phase separation agent |
| US5099079A (en) * | 1990-07-26 | 1992-03-24 | Olin Corporation | Process for separating acid from nitro substituted aromatics using a molten nitrate salt |
| US5099080A (en) * | 1991-03-08 | 1992-03-24 | Olin Corporation | Process for preparing dinitrotoluene |
| US5245092A (en) * | 1991-03-15 | 1993-09-14 | Olin Corporation | Process for preparing dinitrotoluene with low by-product content |
-
1993
- 1993-06-01 KR KR1019940704594A patent/KR950701903A/en not_active Ceased
- 1993-06-01 AU AU43963/93A patent/AU665843B2/en not_active Ceased
- 1993-06-01 EP EP93914223A patent/EP0649400A1/en not_active Withdrawn
- 1993-06-01 RU RU94046238A patent/RU2106338C1/en active
- 1993-06-01 BR BR9306554A patent/BR9306554A/en active Search and Examination
- 1993-06-01 WO PCT/US1993/005081 patent/WO1993025503A1/en not_active Ceased
- 1993-06-01 CA CA002138391A patent/CA2138391A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| BR9306554A (en) | 1998-09-15 |
| EP0649400A4 (en) | 1995-02-14 |
| EP0649400A1 (en) | 1995-04-26 |
| AU4396393A (en) | 1994-01-04 |
| CA2138391A1 (en) | 1993-12-23 |
| WO1993025503A1 (en) | 1993-12-23 |
| RU94046238A (en) | 1996-10-10 |
| AU665843B2 (en) | 1996-01-18 |
| RU2106338C1 (en) | 1998-03-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PA0105 | International application |
Patent event date: 19941216 Patent event code: PA01051R01D Comment text: International Patent Application |
|
| PG1501 | Laying open of application | ||
| A201 | Request for examination | ||
| PA0201 | Request for examination |
Patent event code: PA02012R01D Patent event date: 19980529 Comment text: Request for Examination of Application |
|
| E902 | Notification of reason for refusal | ||
| PE0902 | Notice of grounds for rejection |
Comment text: Notification of reason for refusal Patent event date: 20000530 Patent event code: PE09021S01D |
|
| E902 | Notification of reason for refusal | ||
| PE0902 | Notice of grounds for rejection |
Comment text: Notification of reason for refusal Patent event date: 20010118 Patent event code: PE09021S01D |
|
| E601 | Decision to refuse application | ||
| PE0601 | Decision on rejection of patent |
Patent event date: 20011231 Comment text: Decision to Refuse Application Patent event code: PE06012S01D Patent event date: 20010118 Comment text: Notification of reason for refusal Patent event code: PE06011S01I Patent event date: 20000530 Comment text: Notification of reason for refusal Patent event code: PE06011S01I |