CN113234033A - Efficient catalyst for synthesizing trihydroxyethyl isocyanurate - Google Patents
Efficient catalyst for synthesizing trihydroxyethyl isocyanurate Download PDFInfo
- Publication number
- CN113234033A CN113234033A CN202110410519.7A CN202110410519A CN113234033A CN 113234033 A CN113234033 A CN 113234033A CN 202110410519 A CN202110410519 A CN 202110410519A CN 113234033 A CN113234033 A CN 113234033A
- Authority
- CN
- China
- Prior art keywords
- catalyst
- reaction
- synthesizing
- organic solvent
- subjected
- Prior art date
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- 239000003054 catalyst Substances 0.000 title claims abstract description 25
- -1 trihydroxyethyl isocyanurate Chemical compound 0.000 title claims abstract description 9
- 230000002194 synthesizing effect Effects 0.000 title claims abstract description 7
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims abstract description 24
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- OKIZCWYLBDKLSU-UHFFFAOYSA-M N,N,N-Trimethylmethanaminium chloride Chemical compound [Cl-].C[N+](C)(C)C OKIZCWYLBDKLSU-UHFFFAOYSA-M 0.000 claims abstract description 10
- 239000003960 organic solvent Substances 0.000 claims abstract description 9
- 238000007259 addition reaction Methods 0.000 claims abstract description 8
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 230000003197 catalytic effect Effects 0.000 claims abstract description 3
- 238000002425 crystallisation Methods 0.000 claims abstract description 3
- 230000008025 crystallization Effects 0.000 claims abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 10
- 239000002904 solvent Substances 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 239000011949 solid catalyst Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-dimethylformamide Substances CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- HTZCNXWZYVXIMZ-UHFFFAOYSA-M benzyl(triethyl)azanium;chloride Chemical compound [Cl-].CC[N+](CC)(CC)CC1=CC=CC=C1 HTZCNXWZYVXIMZ-UHFFFAOYSA-M 0.000 description 3
- 239000007810 chemical reaction solvent Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 235000021190 leftovers Nutrition 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 239000003444 phase transfer catalyst Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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
- C07D251/30—Only oxygen atoms
- C07D251/34—Cyanuric or isocyanuric esters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0234—Nitrogen-, phosphorus-, arsenic- or antimony-containing compounds
- B01J31/0235—Nitrogen containing compounds
- B01J31/0237—Amines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0234—Nitrogen-, phosphorus-, arsenic- or antimony-containing compounds
- B01J31/0235—Nitrogen containing compounds
- B01J31/0239—Quaternary ammonium compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/19—Catalysts containing parts with different compositions
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A high-efficiency catalyst for synthesizing trihydroxyethyl isocyanurate belongs to the technical field of chemical synthesis, cyanuric acid and ethylene oxide are subjected to addition reaction in an organic solvent under the catalytic action of the catalyst, and after the reaction is finished, a reaction solution is subjected to decoloration, filtration and cooling crystallization to obtain a target product; the organic solvent is DMF, and the catalyst is a solid-liquid mixed catalyst containing tetramethylammonium chloride and triethylamine. The invention greatly improves the quality of the product, shortens the production period and improves the yield of the product.
Description
Technical Field
The invention relates to a high-efficiency catalyst for synthesizing trihydroxyethyl isocyanurate, belonging to the technical field of chemical synthesis.
Background
The prior art of trihydroxyethyl isocyanurate is that cyanuric acid and ethylene oxide are subjected to addition reaction in an organic solvent of ethylene glycol monomethyl ether under the catalysis of a catalyst of benzyltriethylammonium chloride, the addition reaction is generally carried out, then a concentrated solvent is used indiscriminately, a refined solvent is added for dissolution, activated carbon is added for decolorization, then the temperature is reduced, a wet finished product is obtained by centrifugation, the solvent is recovered from mother liquor for next refining, and the process can obtain a pure product by recrystallization of the concentrated solvent. Long process and high energy consumption.
Disclosure of Invention
The invention provides a high-efficiency catalyst for synthesizing trihydroxyethyl isocyanurate, which selects a proper solvent to replace the original ethylene glycol monomethyl ether, so that the catalyst can be used as a reaction solvent and also can be used as a refined solvent.
The purpose of the invention is realized by the following technical scheme:
a high-efficiency catalyst for synthesizing trihydroxyethyl isocyanurate is characterized in that cyanuric acid and ethylene oxide are subjected to addition reaction in an organic solvent under the catalytic action of the catalyst, and after the reaction is finished, a reaction solution is subjected to decoloration, filtration and cooling crystallization to obtain a target product; the organic solvent is DMF, and the catalyst is a solid-liquid mixed catalyst containing tetramethylammonium chloride and triethylamine.
The catalyst is preferably a solid-liquid mixed catalyst consisting of tetramethylammonium chloride and triethylamine.
More preferably, the weight ratio of the tetramethylammonium chloride to the triethylamine is 1-4: 1.
The dosage of the tetramethylammonium chloride is 1.5 to 3 percent of the weight of the cyanuric acid.
The weight ratio of cyanuric acid to ethylene oxide is 1: 1 to 1.3.
The dosage of the organic solvent is 1.5-3 times of the weight of cyanuric acid.
The reaction temperature of the addition reaction is 90-100 ℃.
The reaction pressure of the addition reaction is 5-6 kg.
The invention adopts alcohol methanol and ethanol with low boiling point as reaction solvents. Due to the change of the reaction solvent, the original catalyst triethylbenzylammonium chloride is not suitable for the addition reaction of a new solvent system, and the new solvent has stronger polarity than the original solvent, so the pH of the reaction system is acidic, and a phase transfer catalyst with strong alkalinity needs to be screened for carrying out the catalytic reaction. The inventor researches and discovers that: the most rational catalyst varieties and the dosage are as follows, the solid catalyst tetramethylammonium chloride and the liquid catalyst triethylamine are used together, the effect is best, and the indexes of reaction time, product quality, yield and the like can be simultaneously met. The dosage of the solid catalyst is 1.5-3% of the weight ratio of the raw material cyanuric acid, and the weight ratio of the solid catalyst to the liquid catalyst is 1-4: 1. The most preferred amount of liquid catalyst is 50% by weight of the solid catalyst.
The invention has the beneficial effects that:
by adopting the technical scheme of the invention, the comprehensive yield of the product can be improved to 95% from 88% in the prior art, the product quality is greatly improved, the production period is shortened, the product yield is improved, the application times of leftovers are improved to 80 times from 30 times, the raw material consumption is effectively reduced, the reaction time is shortened, the product quality is further ensured, and the guarantee is provided for producing the high-quality trihydroxyethyl isocyanurate.
Detailed Description
The detailed process of the most preferred technical scheme is as follows: adding cyanuric acid, DMF, tetramethylammonium chloride and triethylamine into a pressure reaction kettle, introducing ethylene oxide into the pressure reaction kettle within 2-3 hours at 90-100 ℃ under the pressure of 5-6 kilograms, then preserving heat for 1-2 hours, cooling to 25-35 ℃, adding activated carbon, preserving heat for decoloring at 50-60 ℃, removing an activated carbon layer through heat filtration, cooling filtrate to 10-15 ℃, centrifuging to obtain a wet finished product, and drying to obtain a finished product. The weight ratio of the tetramethylammonium chloride to the triethylamine is 1-4: 1, the amount of the tetramethylammonium chloride is 1.5-3% of the weight of the cyanuric acid, and the weight ratio of the cyanuric acid to the ethylene oxide is 1: 1-1.3, and the dosage of the organic solvent is 1.5-3 times of the weight of cyanuric acid.
Claims (1)
1. A high-efficiency catalyst for synthesizing trihydroxyethyl isocyanurate is characterized in that cyanuric acid and ethylene oxide are subjected to addition reaction in an organic solvent under the catalytic action of the catalyst, and after the reaction is finished, a reaction solution is subjected to decoloration, filtration and cooling crystallization to obtain a target product; the organic solvent is DMF, and the catalyst is a solid-liquid mixed catalyst containing tetramethylammonium chloride and triethylamine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110410519.7A CN113234033A (en) | 2021-04-13 | 2021-04-13 | Efficient catalyst for synthesizing trihydroxyethyl isocyanurate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110410519.7A CN113234033A (en) | 2021-04-13 | 2021-04-13 | Efficient catalyst for synthesizing trihydroxyethyl isocyanurate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113234033A true CN113234033A (en) | 2021-08-10 |
Family
ID=77128305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110410519.7A Withdrawn CN113234033A (en) | 2021-04-13 | 2021-04-13 | Efficient catalyst for synthesizing trihydroxyethyl isocyanurate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113234033A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104710375A (en) * | 2015-02-27 | 2015-06-17 | 宜兴市中正化工有限公司 | Method for producing THEIC |
-
2021
- 2021-04-13 CN CN202110410519.7A patent/CN113234033A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104710375A (en) * | 2015-02-27 | 2015-06-17 | 宜兴市中正化工有限公司 | Method for producing THEIC |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 272200 Jining Chemical Industrial Development Zone, Hu Ji Town, Jinxiang County, Jining, Shandong Applicant after: Shandong Jianbang New Material Co.,Ltd. Address before: 272200 Jining Chemical Industrial Development Zone, Hu Ji Town, Jinxiang County, Jining, Shandong Applicant before: JINING JIANBANG CHEMICAL CO.,LTD. |
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210810 |