CN110105524A - Effective Decomposition of benzene and the composition of dimethylbenzene and preparation method thereof - Google Patents
Effective Decomposition of benzene and the composition of dimethylbenzene and preparation method thereof Download PDFInfo
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- CN110105524A CN110105524A CN201910422769.5A CN201910422769A CN110105524A CN 110105524 A CN110105524 A CN 110105524A CN 201910422769 A CN201910422769 A CN 201910422769A CN 110105524 A CN110105524 A CN 110105524A
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- A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
- A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
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- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
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- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
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- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
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Abstract
The present invention relates to a kind of effective Decomposition of benzene and compositions of dimethylbenzene and preparation method thereof, described method includes following steps: first by polyether polyols pure and mild 1,4- butanediol is dry, then it cools down, it adds diisocyanate and catalyst and stirs, then temperature is increased, is stirred for, obtain performed polymer；Dihydromethyl propionic acid and trihydroxy methyl propionic acid cross-linking reaction are added in performed polymer, then temperature is adjusted to 30 DEG C~33 DEG C, add triethylamine reaction, it adds chain extender and carries out chain extension at room temperature, then 35min~40min is reacted at a temperature of 45 DEG C~50 DEG C, obtains the composition of effective Decomposition of benzene and dimethylbenzene.The preparation method of the composition of effective Decomposition of benzene and dimethylbenzene of the invention, easy to operate, yield is high, and benzene and the diformazan benzo that can be adsorbed in air are decomposed, and decomposition efficiency is high, has good commercial promise.
Description
Technical field
The invention belongs to chemosynthesis technical fields, and in particular to the composition of a kind of effective Decomposition of benzene and dimethylbenzene and its
Preparation method.
Background technique
Benzene is a kind of i.e. simplest aromatic hydrocarbons of hydrocarbon, be at normal temperature sweet taste, it is flammable, have the colourless of carcinogenic toxicity
Transparency liquid, and have strong aromatic odor.It is insoluble in water, is soluble in organic solvent, itself also can be used as organic solvent.
Dimethylbenzene is colourless transparent liquid；Be on phenyl ring two hydrogen by methyl substituted product, there are it is o-, m-, to three kinds of isomers,
Industrially, dimethylbenzene refers to the mixture of above-mentioned isomers.The decomposition of benzene and dimethylbenzene is more difficult, generally requires higher temperature
Degree, it would be highly desirable to study it is a kind of can effectively Decomposition of benzene and dimethylbenzene composition.
Summary of the invention
An object of the present invention is to provide the preparation methods of a kind of effective Decomposition of benzene and the composition of dimethylbenzene.
A kind of preparation method of the composition of of the invention effective Decomposition of benzene and dimethylbenzene, includes the following steps: S101: first
It is first that the pure and mild 1,4-butanediol of polyether polyols is dry, 30 DEG C~35 DEG C are subsequently cooled to, diisocyanate and catalyst are added
And stir, 70 DEG C~85 DEG C are then raised the temperature to, 0.8h~1.2h is stirred for, obtains performed polymer；Wherein, the polyethers is more
The weight ratio of first alcohol and the 1,4- butanediol is 1:(2.5~4)；The weight for the diisocyanate being added is the polyethers
0.15 times of the sum of the weight of polyalcohol and the 1,4- butanediol~0.2 times；S102: in the pre-polymerization that the step S101 is obtained
Dihydromethyl propionic acid and trihydroxy methyl propionic acid cross-linking reaction 4h~6h are added in body, then adjusts temperature to 30 DEG C~33 DEG C,
Triethylamine reaction 15min~20min is added, chain extender is added and reaction 1.5h~2h carries out chain extension at room temperature, then
35min~40min is reacted at a temperature of 45 DEG C~50 DEG C, obtains the composition of effective Decomposition of benzene and dimethylbenzene；Wherein, described two
The weight ratio of hydroxymethyl propionic acid and the trihydroxy methyl propionic acid is 1:(1~1.5), the weight of the triethylamine is the dihydroxy first
The 1%~1.5% of base propionic acid；The weight of the chain extender is the 1%~1.5% of the weight of the dihydromethyl propionic acid.
The preparation method of the composition of effective Decomposition of benzene and dimethylbenzene of the invention, easy to operate, yield is high, can adsorb
Benzene and diformazan benzo in air are decomposed, and decomposition efficiency is high, have good commercial promise.
In addition, the preparation method of the composition of above-mentioned effective Decomposition of benzene and dimethylbenzene of the invention, can also have as follows
Additional technical characteristic:
Further, in the step S101, the catalyst is dibutyl tin dilaurate, the weight of the catalyst
Amount is the 1%~1.5% of the weight of the polyether polyol.
Further, in the step S101, the time of stirring is 30min~60min.
Further, in the step S102, the chain extender is amine chain extender.
It is another object of the present invention to the groups for capableing of effective Decomposition of benzene and dimethylbenzene for proposing the method preparation
Close object.
Another object of the present invention is to propose the group for capableing of effective Decomposition of benzene and dimethylbenzene of the method preparation
It closes object and is decomposing the application in the compound with phenyl ring.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Specific embodiment
The embodiment of the present invention is described below in detail, it is described to be exemplary, it is intended to be used to explain the present invention, and cannot manage
Solution is limitation of the present invention.
Embodiment 1
Embodiment 1 proposes a kind of preparation method of the composition of effective Decomposition of benzene and dimethylbenzene, includes the following steps:
(1) first that the pure and mild 1,4-butanediol of polyether polyols is dry, be subsequently cooled to 30 DEG C, add diisocyanate and
Dibutyl tin dilaurate simultaneously stirs 60min, then raises the temperature to 70 DEG C, is stirred for 1.2h, obtains performed polymer；Wherein,
The polyether polyol and the weight ratio of the 1,4- butanediol are 1:2.5；The weight for the diisocyanate being added is institute
0.2 times for stating the sum of weight of the pure and mild 1,4- butanediol of polyether polyols；The weight of the dibutyl tin dilaurate is institute
State the 1% of the weight of polyether polyol.
(2) dihydromethyl propionic acid and trihydroxy methyl propionic acid cross-linking reaction are added in the performed polymer that the step (1) obtains
Then 6h is adjusted temperature to 30 DEG C, add triethylamine reaction 20min, add amine chain extender and react at room temperature
1.5h carries out chain extension, then reacts 35min at 50 °C, obtains the composition of effective Decomposition of benzene and dimethylbenzene；Wherein, institute
The weight ratio for stating dihydromethyl propionic acid and the trihydroxy methyl propionic acid is 1:1.5, and the weight of the triethylamine is the dihydroxy first
The 1% of base propionic acid；The weight of the amine chain extender is the 1.5% of the weight of the dihydromethyl propionic acid.
Embodiment 2
Embodiment 2 proposes a kind of preparation method of the composition of effective Decomposition of benzene and dimethylbenzene, includes the following steps:
(1) first that the pure and mild 1,4-butanediol of polyether polyols is dry, be subsequently cooled to 35 DEG C, add diisocyanate and
Dibutyl tin dilaurate simultaneously stirs 30min, then raises the temperature to 85 DEG C, is stirred for 0.8h, obtains performed polymer；Wherein,
The polyether polyol and the weight ratio of the 1,4- butanediol are 1:4；The weight for the diisocyanate being added is described
0.15 times of the sum of the weight of the pure and mild 1,4- butanediol of polyether polyols；The weight of the dibutyl tin dilaurate is described
The 1.5% of the weight of polyether polyol.
(2) dihydromethyl propionic acid and trihydroxy methyl propionic acid cross-linking reaction are added in the performed polymer that the step (1) obtains
Then 4h is adjusted temperature to 33 DEG C, add triethylamine reaction 15min, add amine chain extender and react at room temperature
2h carries out chain extension, then reacts 40min at a temperature of 45 DEG C, obtains the composition of effective Decomposition of benzene and dimethylbenzene；Wherein, described
The weight ratio of dihydromethyl propionic acid and the trihydroxy methyl propionic acid is 1:1, and the weight of the triethylamine is the dihydroxymethyl third
The 1.5% of acid；The weight of the amine chain extender is the 1% of the weight of the dihydromethyl propionic acid.
Embodiment 3
Embodiment 3 proposes a kind of preparation method of the composition of effective Decomposition of benzene and dimethylbenzene, includes the following steps:
(1) first that the pure and mild 1,4-butanediol of polyether polyols is dry, be subsequently cooled to 33 DEG C, add diisocyanate and
Dibutyl tin dilaurate simultaneously stirs 45min, then raises the temperature to 78 DEG C, is stirred for 1h, obtains performed polymer；Wherein, institute
The weight ratio for stating polyether polyol and the 1,4- butanediol is 1:3.2；The weight for the diisocyanate being added is described
0.2 times of the sum of the weight of the pure and mild 1,4- butanediol of polyether polyols；The weight of the dibutyl tin dilaurate is described
The 1.2% of the weight of polyether polyol.
(2) dihydromethyl propionic acid and trihydroxy methyl propionic acid cross-linking reaction are added in the performed polymer that the step (1) obtains
Then 5h is adjusted temperature to 32 DEG C, add triethylamine reaction 18min, add amine chain extender and react at room temperature
1.8h carries out chain extension, then reacts 38min at a temperature of 48 DEG C, obtains the composition of effective Decomposition of benzene and dimethylbenzene；Wherein, institute
The weight ratio for stating dihydromethyl propionic acid and the trihydroxy methyl propionic acid is 1:1.2, and the weight of the triethylamine is the dihydroxy first
The 1.2% of base propionic acid；The weight of the amine chain extender is the 1.2% of the weight of the dihydromethyl propionic acid.
To sum up, the preparation method of the composition of effective Decomposition of benzene of the invention and dimethylbenzene, easy to operate, yield is high, energy
The benzene and diformazan benzo enough adsorbed in air is decomposed, and decomposition efficiency is high, has good commercial promise.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (6)
1. a kind of preparation method of the composition of effective Decomposition of benzene and dimethylbenzene, which comprises the steps of:
S101: it is first that the pure and mild 1,4-butanediol of polyether polyols is dry, 30 DEG C~35 DEG C are subsequently cooled to, diisocyanate is added
Ester and catalyst simultaneously stir, and then raise the temperature to 70 DEG C~85 DEG C, are stirred for 0.8h~1.2h, obtain performed polymer；Wherein,
The polyether polyol and the weight ratio of the 1,4- butanediol are 1:(2.5~4)；The weight for the diisocyanate being added
0.15 times~0.2 times of the sum of weight for the pure and mild 1,4- butanediol of the polyether polyols；
S102: dihydromethyl propionic acid and trihydroxy methyl propionic acid cross-linking reaction 4h are added in the performed polymer that the step S101 is obtained
~6h, then by temperature adjust to 30 DEG C~33 DEG C, add triethylamine reaction 15min~20min, add chain extender and
Reaction 1.5h~2h carries out chain extension at room temperature, and 35min~40min is then reacted at a temperature of 45 DEG C~50 DEG C, is effectively divided
Solve the composition of benzene and dimethylbenzene；Wherein, the weight ratio of the dihydromethyl propionic acid and the trihydroxy methyl propionic acid be 1:(1~
1.5), the weight of the triethylamine is the 1%~1.5% of the dihydromethyl propionic acid；The weight of the chain extender is described two
The 1%~1.5% of the weight of hydroxymethyl propionic acid.
2. the preparation method of the composition of effective Decomposition of benzene according to claim 1 and dimethylbenzene, which is characterized in that in institute
It states in step S101, the catalyst is dibutyl tin dilaurate, and the weight of the catalyst is the polyether polyol
The 1%~1.5% of weight.
3. the preparation method of the composition of effective Decomposition of benzene according to claim 1 and dimethylbenzene, which is characterized in that in institute
It states in step S101, the time of stirring is 30min~60min.
4. the preparation method of the composition of effective Decomposition of benzene according to claim 1 and dimethylbenzene, which is characterized in that in institute
It states in step S102, the chain extender is amine chain extender.
5. the composition for capableing of effective Decomposition of benzene and dimethylbenzene of the described in any item method preparations of claim 1-4.
6. the described in any item method preparations of claim 1-4 effectively can decompose band by the composition of Decomposition of benzene and dimethylbenzene
There is the application in the compound of phenyl ring.
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| CN111388934A (en) * | 2020-05-18 | 2020-07-10 | 中国人民警察大学 | TDI macromolecular gel decontaminating agent |
| CN111494869A (en) * | 2020-05-25 | 2020-08-07 | 中国人民警察大学 | Small molecule gel decontaminating agent |
| CN111494868A (en) * | 2020-05-15 | 2020-08-07 | 中国人民警察大学 | IPDI macromolecular gel decontaminating agent |
| CN111514512A (en) * | 2020-05-21 | 2020-08-11 | 中国人民警察大学 | Inorganic strong acid hazardous chemical decontamination agent |
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| CN111514512A (en) * | 2020-05-21 | 2020-08-11 | 中国人民警察大学 | Inorganic strong acid hazardous chemical decontamination agent |
| CN111494869A (en) * | 2020-05-25 | 2020-08-07 | 中国人民警察大学 | Small molecule gel decontaminating agent |
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