CN109369351A - A kind of bromination technique preparing organic fire-retardant deca-BDE - Google Patents
A kind of bromination technique preparing organic fire-retardant deca-BDE Download PDFInfo
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- CN109369351A CN109369351A CN201811508029.5A CN201811508029A CN109369351A CN 109369351 A CN109369351 A CN 109369351A CN 201811508029 A CN201811508029 A CN 201811508029A CN 109369351 A CN109369351 A CN 109369351A
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- bde
- bromination
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- preparing organic
- organic fire
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/01—Preparation of ethers
- C07C41/18—Preparation of ethers by reactions not forming ether-oxygen bonds
- C07C41/22—Preparation of ethers by reactions not forming ether-oxygen bonds by introduction of halogens; by substitution of halogen atoms by other halogen atoms
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/01—Preparation of ethers
- C07C41/34—Separation; Purification; Stabilisation; Use of additives
- C07C41/40—Separation; Purification; Stabilisation; Use of additives by change of physical state, e.g. by crystallisation
- C07C41/42—Separation; Purification; Stabilisation; Use of additives by change of physical state, e.g. by crystallisation by distillation
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- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a kind of bromination techniques for preparing organic fire-retardant deca-BDE, the characteristics of according to bromine reaction process, using catalyst compounded, and it is added during the reaction and the substance of bromide ion is provided, it ensure that bromination reaction is thorough, greatly reduce the dosage of bromine compared with prior art, the high conversion rate of diphenyl ether is up to 100%, the yield of deca-BDE is up to 99.2%, and the purity of product is up to 85 degree or more in 99.5% or more, whiteness.
Description
Technical field
The invention belongs to flame retardant areas, and in particular to a kind of bromination technique for preparing organic fire-retardant deca-BDE.
Background technique
Decabrominated dipheny ether product is fine white powder, and molten point: 304-309 DEG C, brominated amount is greater than 82%, and specific gravity is
3.02, it is practically insoluble in all solvents, temperature is greater than 320 DEG C when 5% heat weightlessness, and thermal stability is good, and big white mouse takes orally LD50
It is a kind of nontoxic, free of contamination efficient flame-retarding agent greater than 15%g/kg.Molecular structural formula are as follows:
In more than the 70 a kinds for being used as bromide fire retardant, deca-BDE is that mature production technology, cost advantage are prominent
Traditional category out is one of maximum fire retardant kind of dosage in the world, is mainly used for preventing electronic electric equipment plastics group
Part burning, slows down spreading velocity of fire, is also widely used for weaving and field of traffic.Since deca-BDE has flame retarding efficiency
The features such as high, widely applicable, heat-resist, hydrolytic stability is excellent, production and applicating history are more than 30 years existing.
As International Environmental Protection legislation is increasingly stringent, people, which increasingly pay close attention to bromide fire retardant, environment and human body
Evil influences.The RoHS put into effect in 2003, is included in electronic and electrical equipment for polybrominated diphenyl ethers and limits the use of harmful substance list.Theoretically
It says, polybrominated diphenyl ethers is a kind of chemical substance, refers to 10 kinds of chemical substances from a dibromodiphenyl ether to deca-BDE.But it is true
On, it can be used as only penta-BDE, octabromodiphenyl ether and the deca-BDE of commodity application, wherein penta-BDE and eight bromines
Diphenyl ether is prohibited use (content in electronic and electrical equipment must not exceed 1000ppm) by RoHS, and deca-BDE
As special case, it is formally included in RoHS on October 15th, 2005 and exempts inventory by European Union.This decision is based on to ten bromines two
The Risk Assessment Report that phenylate is done.This report is 10 years time-consuming, and research project up to 588, conclusion is deca-BDE
To human health and environment devoid of risk, non-hazardous, reduces in practical application and consumer is caused without taking further measures
Risk.
Diphenyl ether obtains in the presence of halogenated catalyst (iron powder etc.) with bromine reaction.Production method can there are two types of:
1) solvent method
Diphenyl ether is dissolved in solvent, catalyst is added, then plus bromine is reacted.Reaction is finished, and is filtered, washed, is dried,
Up to decabromodiphenyl oxide.Common solvent has Bromofume, dichloroethanes, methylene bromide, carbon tetrachloride, tetrachloroethanes etc..
2) excessive bromination method
Make the bromination process of solvent with excess bromine.Catalyst is dissolved in bromine, diphenyl ether is added dropwise into bromine.Reaction knot
Shu Hou steams excessive bromine, neutralizes, filters, is drying to obtain finished product.
It is produced using solvent method there may be micro polymeric derivative or the alkyl substituents of deca-BDE, if ten
Dibromodiphenyl ether contains impurity, these impurity are difficult by the conventional method removal such as extracting, washing.Using excessive bromine method production ten
Bromine diphenylethane often influences the whiteness and purity of product because can not find suitable catalyst.
Summary of the invention
In view of the deficiencies of the prior art, the object of the present invention is to provide a kind of bromines for preparing organic fire-retardant deca-BDE
Chemical industry skill, the characteristics of according to bromine reaction process, use is catalyst compounded, and is added provides the object of bromide ion during the reaction
Matter, ensure that bromination reaction is thorough, greatly reduce the dosage of bromine compared with prior art, avoid the by-products such as low bromination product
The generation of object, purity is high, the whiteness of product are good.
The purpose of the present invention is what is realized by following measures:
A kind of bromination technique preparing organic fire-retardant deca-BDE, includes the following steps:
1) bromination process:
Bromine is added in reaction kettle, after addition the first catalyst stirring has, a certain amount of diphenyl ether is added drop-wise to
In reaction kettle, the temperature for controlling reaction is 10~50 DEG C, and the second catalyst is added after reacting a period of time and provides halide ion
Substance, control reaction temperature is 70~90 DEG C, and the reaction was continued 2~6 hours, filtering and removing catalyst while hot, after filtrate enters
Treatment process；
2) filtrate from the second bromination process is added in distillation still, is warming up to 100~200 by postprocessing working procedures
DEG C, the bromine evaporated is recycled, debrominate reagent and a certain amount of distilled water is then added, is stirred to react 0.1~1 hour, is imported
In ball milling kettle added with aluminum oxide ball, stirring ball-milling is opened；Material after ball milling is transferred to transition tank, is then sent into material
Filter press carries out filters pressing, then the filter cake after filters pressing is put into drying machine, and the material after drying obtains finished product through air-flow crushing.
First catalyst is metal bromide or chloride, including but not limited to alchlor, alchlor, tribromo
Change the mixture of one of iron, ferric trichloride, zinc chloride or zinc bromide or two kinds or more.
First catalyst charge is the 1~10% of diphenyl ether quality.
Second catalyst is Antimony pentachloride, five bromination antimony, tin tetrachloride, tin tetrabromide, titanium tetrachloride or tetrabormated
Titanium.
Second catalyst charge is the 1~10% of diphenyl ether quality.
The dosage of the bromine is 7~10 times of diphenyl ether weight.
Debrominate reagent is sodium sulfite, Na2S2O4, sulphur powder or ammonia, dosage be by mass percentage vinasse dosage
0.5~35%.
Be added in second step bromination process offer bromide ion substance, including but not limited to NaBr, KBr, HBr,
LiBr；The substance additional amount for wherein providing bromide ion is 1~30wt% of diphenyl ether dosage.
The invention has the advantages that:
The method for preparing deca-BDE of the invention, using two step bromination techniques, the characteristics of according to bromine reaction process,
The different step catalyst different using activity, ensure that bromination reaction is thorough, greatly reduces bromine compared with prior art
Dosage, up to 100%, the yield of deca-BDE is up to 99.2% for the high conversion rate of diphenyl ether, the purity of product 99.5% with
Upper, whiteness is up to 85 degree or more.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
[embodiment 1]
1) bromination process:
17kg bromine is added in reaction kettle, after addition 0.1kg alchlor stirring has, 1.7kg diphenyl ether is dripped
It is added in reaction kettle；The temperature of control reaction is 30 DEG C, and 120g Antimony pentachloride and 0.3kg LiBr, control are added after reaction 3 hours
Reaction temperature processed is 90 DEG C, and the reaction was continued 6 hours, and filtering and removing catalyst, filtrate enter postprocessing working procedures while hot；
2) filtrate from the second bromination process is added in distillation still by postprocessing working procedures, is warming up to 120 DEG C, recycling
Then the distilled water of 0.7kg sodium sulfite and 3L is added in the bromine evaporated, import the ball milling kettle added with aluminum oxide ball
In, open stirring ball-milling；Material after ball milling is transferred to transition tank, material is then sent into filter press and carries out filters pressing, then by filters pressing
Filter cake afterwards puts into drying machine, and the material after drying obtains finished product 9.47kg, yield 98.7%, through HPLC purity point through air-flow crushing
Analysis and MS-350 whiteness instrument test (D65 light source, 10 ° of visuals field), the purity of product are 99.7%, and whiteness is 87 degree.
[embodiment 2]
1) bromination process:
20kg bromine is added in reaction kettle, after addition 0.12kg zinc chloride stirring has, 1.7kg diphenyl ether is dripped
It is added in reaction kettle；The temperature of control reaction is 30 DEG C, and 95g titanium tetrachloride and 0.4kg NaBr, control are added after reaction 3 hours
Reaction temperature processed is 90 DEG C, and the reaction was continued 6 hours, and filtering and removing catalyst, filtrate enter postprocessing working procedures while hot；
2) filtrate from the second bromination process is added in distillation still by postprocessing working procedures, is warming up to 180 DEG C, recycling
Then the distilled water of 0.7kg sodium sulfite and 2.5L is added in the bromine evaporated, import the ball milling kettle added with aluminum oxide ball
In, open stirring ball-milling；Material after ball milling is transferred to transition tank, material is then sent into filter press and carries out filters pressing, then by filters pressing
Filter cake afterwards puts into drying machine, and the material after drying obtains finished product 9.52kg, yield 99.3%, through HPLC purity point through air-flow crushing
Analysis and MS-350 whiteness instrument test (D65 light source, 10 ° of visuals field), the purity of product are 99.5%, and whiteness is 86 degree.
[embodiment 3]
1) bromination process:
22kg bromine is added in reaction kettle, after addition 0.12kg ferric trichloride stirring has, 1.7kg diphenyl ether is dripped
It is added in reaction kettle；The temperature of control reaction is 30 DEG C, and 110g tin tetrachloride and 0.2kg HBr, control are added after reaction 3 hours
Reaction temperature processed is 70 DEG C, and the reaction was continued 3 hours, and filtering and removing catalyst, filtrate enter postprocessing working procedures while hot；
2) filtrate from the second bromination process is added in distillation still by postprocessing working procedures, is warming up to 150 DEG C, recycling
Then 0.6kg Na is added in the bromine evaporated2S2O4With the distilled water of 2.5L, the ball milling kettle added with aluminum oxide ball is imported
In, open stirring ball-milling；Material after ball milling is transferred to transition tank, material is then sent into filter press and carries out filters pressing, then by filters pressing
Filter cake afterwards puts into drying machine, and the material after drying obtains finished product 9.49kg, yield 98.9%, through HPLC purity point through air-flow crushing
Analysis and MS-350 whiteness instrument test (D65 light source, 10 ° of visuals field), the purity of product are 99.6%, and whiteness is 88 degree.
[comparative example 1]
1) bromination process:
17kg bromine is added in reaction kettle, after addition 0.1kg alchlor stirring has, 1.7kg diphenyl ether is dripped
It is added in reaction kettle；The temperature of control reaction is 30 DEG C, and 0.3kg LiBr is added after reaction 3 hours, and control reaction temperature is 90
DEG C, the reaction was continued 6 hours, and filtering and removing catalyst, filtrate enter postprocessing working procedures while hot；
2) filtrate from the second bromination process is added in distillation still by postprocessing working procedures, is warming up to 120 DEG C, recycling
Then the distilled water of 0.7kg sodium sulfite and 3L is added in the bromine evaporated, import the ball milling kettle added with aluminum oxide ball
In, open stirring ball-milling；Material after ball milling is transferred to transition tank, material is then sent into filter press and carries out filters pressing, then by filters pressing
Filter cake afterwards puts into drying machine, and the material after drying obtains finished product 8.85kg, yield 92.3%, through HPLC purity point through air-flow crushing
Analysis and MS-350 whiteness instrument test (D65 light source, 10 ° of visuals field), the purity of product are 94.9%, and whiteness is 73 degree.
[comparative example 2]
1) bromination process:
17kg bromine is added in reaction kettle, after addition 0.1kg alchlor stirring has, 1.7kg diphenyl ether is dripped
It is added in reaction kettle；Control reaction temperature be 30 DEG C, reaction 3 hours after, be heated to 90 DEG C, the reaction was continued 6 hours, while hot
Filtering and removing catalyst, filtrate enter postprocessing working procedures；
2) filtrate from the second bromination process is added in distillation still by postprocessing working procedures, is warming up to 120 DEG C, recycling
Then the distilled water of 0.7kg sodium sulfite and 3L is added in the bromine evaporated, import the ball milling kettle added with aluminum oxide ball
In, open stirring ball-milling；Material after ball milling is transferred to transition tank, material is then sent into filter press and carries out filters pressing, then by filters pressing
Filter cake afterwards puts into drying machine, and the material after drying obtains finished product 8.23kg, yield 85.8%, through HPLC purity point through air-flow crushing
Analysis and MS-350 whiteness instrument test (D65 light source, 10 ° of visuals field), the purity of product are 92.3%, 67 degree of whiteness.
Above description sufficiently discloses a specific embodiment of the invention.It should be pointed out that being familiar with the field
Range of any change that technical staff does a specific embodiment of the invention all without departing from claims of the present invention.
Correspondingly, the scope of the claims of the invention is also not limited only to previous embodiment.
Claims (9)
1. a kind of bromination technique for preparing organic fire-retardant deca-BDE, it is characterised in that include the following steps:
1) bromination process:
Bromine is added in reaction kettle, after addition the first catalyst stirring has, a certain amount of diphenyl ether is added drop-wise to reaction
In kettle, the temperature for controlling reaction is 10~50 DEG C, and the second catalyst is added after reacting a period of time and provides the object of halide ion
Matter, control reaction temperature are 70~90 DEG C, and the reaction was continued 2~6 hours, and filtering and removing catalyst, filtrate enter post-processing while hot
Process；
2) filtrate from bromo chemical sequence is added in distillation still by postprocessing working procedures, is warming up to 100~200 DEG C, recycling evaporation
Then bromine out is added debrominate reagent and a certain amount of distilled water, is stirred to react 0.1~1 hour, import added with three oxidations two
In the ball milling kettle of aluminium ball, stirring ball-milling is opened；Material after ball milling is transferred to transition tank, then presses material feeding filter press
Filter, then the filter cake after filters pressing is put into drying machine, the material after drying obtains finished product through air-flow crushing.
2. the bromination technique described in claim 1 for preparing organic fire-retardant deca-BDE, it is characterised in that: described first urges
Agent is metal bromide or chloride, including but not limited to alchlor, alchlor, ferric bromide, ferric trichloride, chlorination
One of zinc or zinc bromide or its mixture.
3. the bromination technique according to claim 2 for preparing organic fire-retardant deca-BDE, which is characterized in that described
First catalyst charge is the 1~10% of diphenyl ether quality.
4. the bromination technique according to claim 1 for preparing organic fire-retardant deca-BDE, which is characterized in that described
Two catalyst are Antimony pentachloride, five bromination antimony, tin tetrachloride, tin tetrabromide, titanium tetrachloride or titanium tetrabromide.
5. the bromination technique according to claim 3 for preparing organic fire-retardant deca-BDE, which is characterized in that described
Two catalyst charges are the 1~10% of diphenyl ether quality.
6. the bromination technique according to claim 1 for preparing organic fire-retardant deca-BDE, it is characterised in that: the liquid
The dosage of bromine is 7~10 times of diphenyl ether weight.
7. the bromination technique according to claim 1 for preparing organic fire-retardant deca-BDE, it is characterised in that: debrominate examination
Agent is sodium sulfite, Na2S2O4, sulphur powder or ammonia, dosage be by mass percentage the 0.5~35% of vinasse dosage.
8. the bromination technique according to claim 1 for preparing organic fire-retardant deca-BDE, in second step bromination process
The substance of the offer bromide ion of middle addition, including but not limited to NaBr, KBr, HBr, LiBr.
9. the bromination technique according to claim 1 for preparing organic fire-retardant deca-BDE, wherein providing halide ion
Substance additional amount be diphenyl ether dosage 1~30wt%.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3752856A (en) * | 1969-02-03 | 1973-08-14 | Ugine Kuhlmann | Process for the production of brominated aromatic compounds |
| US3965197A (en) * | 1970-10-12 | 1976-06-22 | Michigan Chemical Corporation | Process for the complete bromination of non-fused ring aromatic compounds |
| US4287373A (en) * | 1979-05-16 | 1981-09-01 | Great Lakes Chemical Corporation | Perbromination of phenol and diphenyl ether at elevated temperature using bromine as the reaction medium |
| CN101528654A (en) * | 2006-08-31 | 2009-09-09 | 溴化合物有限公司 | A process for preparing polybrominated compounds |
| CN101643388A (en) * | 2009-06-22 | 2010-02-10 | 泰州百力化学有限公司 | Preparation method of decabromo-diphehylethane |
| CN101693650A (en) * | 2009-11-02 | 2010-04-14 | 山东海王化工股份有限公司 | Process for preparing high-purity decabromodiphenyl ether |
-
2018
- 2018-12-11 CN CN201811508029.5A patent/CN109369351A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3752856A (en) * | 1969-02-03 | 1973-08-14 | Ugine Kuhlmann | Process for the production of brominated aromatic compounds |
| US3965197A (en) * | 1970-10-12 | 1976-06-22 | Michigan Chemical Corporation | Process for the complete bromination of non-fused ring aromatic compounds |
| US4287373A (en) * | 1979-05-16 | 1981-09-01 | Great Lakes Chemical Corporation | Perbromination of phenol and diphenyl ether at elevated temperature using bromine as the reaction medium |
| CN101528654A (en) * | 2006-08-31 | 2009-09-09 | 溴化合物有限公司 | A process for preparing polybrominated compounds |
| CN101643388A (en) * | 2009-06-22 | 2010-02-10 | 泰州百力化学有限公司 | Preparation method of decabromo-diphehylethane |
| CN101693650A (en) * | 2009-11-02 | 2010-04-14 | 山东海王化工股份有限公司 | Process for preparing high-purity decabromodiphenyl ether |
Non-Patent Citations (1)
| Title |
|---|
| 张澍声: "十溴联苯醚", 《精细与专用化学品》 * |
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Application publication date: 20190222 |