CN112876692A - Dication emulsifier and preparation process thereof - Google Patents
Dication emulsifier and preparation process thereof Download PDFInfo
- Publication number
- CN112876692A CN112876692A CN202110071817.8A CN202110071817A CN112876692A CN 112876692 A CN112876692 A CN 112876692A CN 202110071817 A CN202110071817 A CN 202110071817A CN 112876692 A CN112876692 A CN 112876692A
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- parts
- emulsifier
- dicationic
- octadecyl
- stearamide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C231/00—Preparation of carboxylic acid amides
- C07C231/08—Preparation of carboxylic acid amides from amides by reaction at nitrogen atoms of carboxamide groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2395/00—Bituminous materials, e.g. asphalt, tar or pitch
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The invention discloses a dicationic emulsifier, which comprises the following components: 20-25 parts of N-octadecyl-1, 3-propylenediamine, 10-12 parts of epoxypropyl trimethyl ammonium chloride, 20-30 parts of stearamide and 1.5-2 parts of calcium ricinoleate. The preparation method comprises the steps of firstly reacting N-octadecyl-1, 3-propylenediamine with epoxypropyl trimethyl ammonium chloride to generate an intermediate with an epoxy group and tertiary amide, and then carrying out ring-opening addition reaction on the epoxy group on the intermediate through stearamide to obtain the final tertiary amide type dicationic emulsifier with ethoxy. The emulsified asphalt has good emulsifying performance, various performance indexes of the prepared emulsified asphalt are excellent, the emulsified asphalt can emulsify various types of asphalt, and the prepared emulsified asphalt is fine, uniform and good in aggregate wrapping property.
Description
Technical Field
The invention relates to the field of emulsifiers, in particular to a dicationic emulsifier and a preparation process thereof.
Background
At present, most of asphalt emulsifiers applied are fast-cracking or medium-cracking emulsifiers, and the requirements of slow-cracking and fast-setting in a slurry seal technology are difficult to meet.
Disclosure of Invention
Aiming at the problems, the invention provides the dicationic emulsifier and the preparation process thereof, the dicationic emulsifier has excellent emulsifying property, and the prepared emulsified asphalt has excellent performance indexes and can meet the technical requirements of slow cracking and quick setting.
The technical scheme adopted by the invention is as follows:
a dicationic emulsifier comprises the following components: n-octadecyl-1, 3-propylenediamine, epoxypropyltrimethylammonium chloride and stearamide.
In a further technical scheme, the weight parts of the components are as follows: 20-25 parts of N-octadecyl-1, 3-propylenediamine, 10-12 parts of epoxypropyl trimethyl ammonium chloride and 20-30 parts of stearamide.
In a further technical scheme, the fertilizer also comprises 1.5 to 2 parts of calcium ricinoleate.
In a further technical scheme, the coating also comprises 0.2 to 0.5 part of defoaming agent.
The invention also provides a preparation method of the dicationic emulsifier, which adopts the technical scheme as follows:
a preparation process of a dicationic emulsifier comprises the following steps:
s1, dissolving N-octadecyl-1, 3-propylenediamine and epoxypropyltrimethylammonium chloride in an alcohol solvent, fully stirring and reacting for 8-10 h in an alkaline environment, cooling to room temperature, then carrying out reduced pressure distillation, washing, suction filtration and drying to obtain an intermediate with an epoxy group;
s2, dissolving the intermediate and stearamide in an alcohol solvent, fully stirring and reacting for 8-12 h in an alkaline environment, cooling to room temperature, then carrying out reduced pressure distillation, washing, suction filtering and drying to obtain the tertiary amide product containing ethoxy.
In a further embodiment, in steps S1 and S2, the alcohol solvent is methanol, ethanol or isopropanol.
In a further technical scheme, in the step S1, the reaction temperature is 67-83 ℃.
The preparation method comprises the steps of adopting N-octadecyl-1, 3-propylenediamine and epoxypropyl trimethyl ammonium chloride as raw materials, firstly, reacting the N-octadecyl-1, 3-propylenediamine and the epoxypropyl trimethyl ammonium chloride to generate an intermediate with an epoxy group and tertiary amide, and then carrying out ring-opening addition reaction on the epoxy group on the intermediate through stearamide to obtain the final dication emulsifier, wherein the dication emulsifier is a tertiary amide type dication emulsifier with an ethoxy group.
The invention has the beneficial effects that:
1. the dication in the emulsifier can effectively reduce the demulsification speed and realize the technical effect of slow-breaking and quick-setting.
2. The dicationic emulsifier obtained by the invention has good emulsifying effect and wide application range, can emulsify different types of asphalt, and the prepared emulsified asphalt is uniform and stable and has simple synthesis process.
3. According to the invention, ethoxy is introduced into the emulsifier, and the HLB value of the emulsifier and the steric hindrance of the hydrophilic group can be adjusted by adjusting the number of the ethoxy, so that emulsification of different types of asphalt is realized, and the demulsification speed and the coagulation time are controlled.
4. The tertiary amide type emulsifier obtained by the invention has good emulsifying property, various performance indexes of the prepared emulsified asphalt are excellent, the emulsified asphalt can emulsify various asphalt with different types, and the prepared emulsified asphalt is fine, uniform and good in aggregate wrapping property.
Detailed Description
The following provides a detailed description of embodiments of the invention.
Example 1:
a dicationic emulsifier comprises the following components: 25 parts of N-octadecyl-1, 3-propylenediamine, 11 parts of epoxypropyltrimethylammonium chloride and 25 parts of stearamide.
In this example, 1.8 parts of calcium ricinoleate is also included.
In the embodiment, 0.2 part of defoaming agent is also included.
The preparation method of the dicationic emulsifier comprises the following steps:
s1, dissolving N-octadecyl-1, 3-propylenediamine and epoxypropyl trimethyl ammonium chloride in an alcohol solvent, fully stirring and reacting for 8-10 h at the reaction temperature of 67-83 ℃ in an alkaline environment, cooling to room temperature, then carrying out reduced pressure distillation, washing, suction filtering and drying to obtain an intermediate with an epoxy group;
s2, dissolving the intermediate and stearamide in an alcohol solvent, fully stirring and reacting for 8-12 h in an alkaline environment, cooling to room temperature, then carrying out reduced pressure distillation, washing, suction filtering and drying to obtain the tertiary amide product containing ethoxy.
In the present embodiment, in steps S1 and S2, the alcohol solvent is methanol, ethanol or isopropanol.
Example 2:
the formula and the preparation process of the embodiment are the same as those of the embodiment 1, except that in the embodiment, the weight parts of the components are as follows: : 20 parts of N-octadecyl-1, 3-propylene diamine, 10 parts of epoxy propyl trimethyl ammonium chloride, 20 parts of stearamide, 1.5 parts of calcium ricinoleate and 0.2 part of defoaming agent.
Example 3:
the formula and the preparation process of the embodiment are the same as those of the embodiment 1, except that in the embodiment, the weight parts of the components are as follows: : 25 parts of N-octadecyl-1, 3-propylene diamine, 12 parts of epoxy propyl trimethyl ammonium chloride, 30 parts of stearamide, 2 parts of calcium ricinoleate and 0.5 part of defoaming agent.
The dicationic emulsifiers prepared in examples 1-3 were tested for emulsion breaking speed, storage stability, evaporation residue and amount on screen, and the results were as follows:
the above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (6)
1. A dicationic emulsifier is characterized by comprising the following components: n-octadecyl-1, 3-propylenediamine, epoxypropyltrimethylammonium chloride and stearamide.
2. The dicationic emulsifier according to claim 1, wherein the weight parts of each component are as follows: 20-25 parts of N-octadecyl-1, 3-propylenediamine, 10-12 parts of epoxypropyl trimethyl ammonium chloride and 20-30 parts of stearamide.
3. The dicationic emulsifier of claim 2, further comprising 1.5-2 parts of calcium ricinoleate.
4. A preparation process of a dicationic emulsifier is characterized by comprising the following steps:
s1, dissolving N-octadecyl-1, 3-propylenediamine and epoxypropyltrimethylammonium chloride in an alcohol solvent, fully stirring and reacting for 8-10 h in an alkaline environment, cooling to room temperature, then carrying out reduced pressure distillation, washing, suction filtration and drying to obtain an intermediate with an epoxy group;
s2, dissolving the intermediate and stearamide in an alcohol solvent, fully stirring and reacting for 8-12 h in an alkaline environment, cooling to room temperature, then carrying out reduced pressure distillation, washing, suction filtering and drying to obtain the tertiary amide product containing ethoxy.
5. The process of claim 4, wherein the alcoholic solvent is methanol, ethanol or isopropanol in steps S1 and S2.
6. The process of claim 4, wherein the reaction temperature in step S1 is 67-83 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110071817.8A CN112876692A (en) | 2021-01-19 | 2021-01-19 | Dication emulsifier and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110071817.8A CN112876692A (en) | 2021-01-19 | 2021-01-19 | Dication emulsifier and preparation process thereof |
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| Publication Number | Publication Date |
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| CN112876692A true CN112876692A (en) | 2021-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110071817.8A Pending CN112876692A (en) | 2021-01-19 | 2021-01-19 | Dication emulsifier and preparation process thereof |
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| CN (1) | CN112876692A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102715170A (en) * | 2012-06-12 | 2012-10-10 | 陕西科技大学 | Cationic antimicrobial and preparation method and application thereof |
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2021
- 2021-01-19 CN CN202110071817.8A patent/CN112876692A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102715170A (en) * | 2012-06-12 | 2012-10-10 | 陕西科技大学 | Cationic antimicrobial and preparation method and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| 石起增，等: "一种双季铵盐型改性沥青乳化剂的合成", 《有机化学》 * |
| 邢凤兰，等: "《印染助剂》", 29 February 2008, 化学工业出版社 * |
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