CN111378063A - Terpolymer amphoteric dispersant, and preparation method and application thereof - Google Patents
Terpolymer amphoteric dispersant, and preparation method and application thereof Download PDFInfo
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- CN111378063A CN111378063A CN202010227698.6A CN202010227698A CN111378063A CN 111378063 A CN111378063 A CN 111378063A CN 202010227698 A CN202010227698 A CN 202010227698A CN 111378063 A CN111378063 A CN 111378063A
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- terpolymer
- amphoteric dispersant
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- polyoxyethylene ether
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/14—Monomers containing only one unsaturated aliphatic radical containing one ring substituted by heteroatoms or groups containing heteroatoms
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2688—Copolymers containing at least three different monomers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F228/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a bond to sulfur or by a heterocyclic ring containing sulfur
- C08F228/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a bond to sulfur or by a heterocyclic ring containing sulfur by a bond to sulfur
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/40—Surface-active agents, dispersants
- C04B2103/408—Dispersants
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Paints Or Removers (AREA)
Abstract
The invention belongs to the field of dispersants, and discloses a terpolymer amphoteric dispersant, and a preparation method and an application thereof. The ternary polymer amphoteric dispersant is prepared from the following components in parts by weight: 35-50 parts of nonionic surfactant A, 25-45 parts of anionic surfactant B, 40-60 parts of cationic surfactant C and 1-3 parts of initiator. The preparation method comprises the following steps: under the protection of nitrogen, mixing a nonionic surfactant A, an anionic surfactant B and an initiator, reacting at 60-85 ℃ for 30-60min, adding a cationic surfactant C into the mixture, adjusting the pH to 7.5-10, and continuously reacting for 6-8h to obtain the dispersing agent. The dispersant has a dispersing effect equivalent to that of German amine 482 and 492, has good stability, and can meet the dispersing effect required by the architectural coating in the using process.
Description
Technical Field
The invention belongs to the field of dispersants, and particularly relates to a terpolymer amphoteric dispersant, and a preparation method and application thereof.
Background
The dispersant is widely used in the field of building coatings as an assistant capable of improving and improving the dispersion performance of solid or liquid materials. Because of the characteristics of small particle size and large specific surface area of slurry particles, solid particles are easy to agglomerate. The addition of a dispersant to the poorly soluble inorganic or organic particles helps to prevent the particles from agglomerating and maintain uniform and stable dispersing ability. The traditional dispersing agent has low dispersing ability and poor stability, does not have good dispersion stabilizing effect, and causes the slurry particles to lose the special functions.
Disclosure of Invention
In order to overcome the disadvantages and shortcomings of the prior art, the primary object of the present invention is to provide a terpolymer amphoteric dispersant.
The invention also aims to provide a preparation method of the terpolymer amphoteric dispersant.
The invention also aims to provide the application of the ternary polymer amphoteric dispersant in the aspect of architectural coatings.
The purpose of the invention is realized by the following scheme:
a terpolymer amphoteric dispersant is prepared from the following components in parts by weight:
35-50 parts of nonionic surfactant A
25-45 parts of anionic surfactant B
40-60 parts of cationic surfactant C
1-3 parts of initiator
The nonionic surfactant A is at least one of methacrylic acid, alkylphenol polyoxyethylene ether, octanol polyoxyethylene ether, isooctanol polyoxyethylene ether, secondary alcohol polyoxyethylene ether, fatty acid methyl ester polyoxyethylene ether and the like; methacrylic acid is preferred.
The anionic surfactant B is at least one of isopropyl acrylamide, hexadecyl trimethyl ammonium bromide, octadecyl dimethyl benzyl ammonium chloride, dodecyl dimethyl benzyl ammonium chloride, di-octaalkyl dimethyl ammonium chloride and the like; preferably at least one of isopropyl acrylamide, cetyl trimethyl ammonium bromide and octadecyl dimethyl benzyl ammonium chloride.
The cationic surfactant C is at least one of sodium styrene sulfonate, α -sodium alkenyl sulfonate, fatty alcohol phosphate, sodium fatty alcohol phosphate, disodium fatty alcohol polyoxyethylene ether sulfosuccinate and the like, preferably at least one of sodium styrene sulfonate and α -sodium alkenyl sulfonate.
The initiator is at least one of potassium persulfate, ammonium persulfate, sodium bisulfite, azobisisobutyronitrile, azobisisoheptonitrile, benzoyl peroxide, dicumyl peroxide, ditert-butyl peroxide, tert-butyl peroxybenzoate and the like; preferably at least one of potassium persulfate and ammonium persulfate.
The preparation method of the terpolymer amphoteric dispersant comprises the following steps: under the protection of nitrogen, mixing a non-ionic surfactant A, an anionic surfactant B and an initiator, controlling the temperature at 60-85 ℃, after reacting for 30-60min, adding a cationic surfactant C into the mixture, adjusting the pH to 7.5-10, keeping the temperature unchanged in the whole reaction process, and continuously reacting for 6-8h to prepare the terpolymer amphoteric dispersant.
The application of the ternary polymer amphoteric dispersant in the aspect of architectural coatings.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the ternary polymer amphoteric dispersant prepared by the invention contains positively charged and negatively charged hydrophilic groups, can form more adsorption anchor points, enhances the action of electrostatic repulsion, can effectively prevent the agglomeration phenomenon among slurry particles, has a dispersion effect close to or equivalent to that of German Ming 482 and 492, has stable dispersion performance, can meet the dispersion effect required by the building coating in the use process, and is beneficial to industrial production and application of the building coating.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
The reagents used in the examples are commercially available without specific reference.
Example 1
Introducing nitrogen, mixing 35 parts of methacrylic acid, 45 parts of isopropyl acrylamide and 3 parts of potassium persulfate, reacting at the temperature of 60 ℃ for 30 minutes, adding 60 parts of sodium styrene sulfonate with the pH value of 7.5, and continuously reacting for 6 hours to prepare the terpolymer amphoteric dispersant.
Example 2
Introducing nitrogen, mixing 35 parts of methacrylic acid, 38 parts of isopropyl acrylamide and 3 parts of potassium persulfate, reacting at 70 ℃ for 40 minutes, adding 50 parts of sodium styrene sulfonate with the pH value of 8.5, and continuously reacting for 6 hours to prepare the terpolymer amphoteric dispersant.
Example 3
Introducing nitrogen, taking 45 parts of methacrylic acid, 30 parts of hexadecyl trimethyl ammonium bromide and 2 parts of ammonium persulfate, reacting at the temperature of 80 ℃ for 50 minutes, adding 45 parts of α -sodium alkenyl sulfonate with the pH value of 9.0, and continuously reacting for 7 hours to prepare the terpolymer amphoteric dispersant.
Example 4
Introducing nitrogen, taking 50 parts of methacrylic acid, 25 parts of octadecyl dimethyl benzyl ammonium chloride and 1 part of ammonium persulfate, reacting at the temperature of 85 ℃ for 60 minutes, adding 40 parts of α -sodium alkenyl sulfonate with the pH value of 10, and continuing to react for 8 hours to prepare the terpolymer amphoteric dispersant.
And (3) testing the dispersion performance:
barium sulfate mortar with solid content of 80% is prepared by using barium sulfate sand with grain size of 40 meshes of commercial cement. Weighing 100g of cement, adding 300g of barium sulfate sand, adding 100g of water, adding dispersing agents with different weight percentages, continuously stirring for 3min at the normal temperature at the stirring speed of 1500r/min, and testing the dispersing effect of the dispersing agents.
The dispersant is added according to the percentage of the total weight of the barium sulfate mortar, and the addition amount of the dispersant is 0.1 to 0.5 percent. The values were measured using a U.S. Brookfield viscometer.
Table 1 shows the relationship between the different addition amounts of the amphoteric dispersant prepared and the rheology of the dispersed powder
| Addition amount of dispersant | 0.1％ | 0.2％ | 0.3％ | 0.4％ | 0.5％ |
| German Ming 482(m.pas) | 2072 | 921 | 379 | 267 | 94 |
| German Ming 492(m.pas) | 2120 | 890 | 330 | 190 | 50 |
| Example 1(m.pas) | 2150 | 820 | 320 | 200 | 70 |
| Example 2(m.pas) | 2093 | 927 | 440 | 223 | 112 |
| Example 3(m.pas) | 2173 | 1017 | 433 | 206 | 140 |
| Example 4(m.pas) | 2033 | 912 | 380 | 210 | 135 |
As can be seen from Table 1, compared with the German Ming 482 and 492 dispersants, the amphoteric dispersant prepared in examples 1-4 has better dispersing effect, and the solution is not layered and has good stability after being stored for 7 days at normal temperature, and is close to or reaches the same level as the performance of the similar products abroad.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (8)
1. The terpolymer amphoteric dispersant is characterized by being prepared from the following components in parts by weight:
2. the terpolymer amphoteric dispersant according to claim 1, characterized in that:
the nonionic surfactant is at least one of methacrylic acid, alkylphenol polyoxyethylene ether, octanol polyoxyethylene ether, isooctanol polyoxyethylene ether, secondary alcohol polyoxyethylene ether and fatty acid methyl ester polyoxyethylene ether.
3. The terpolymer amphoteric dispersant according to claim 1, characterized in that:
the anionic surfactant is at least one of isopropyl acrylamide, hexadecyl trimethyl ammonium bromide, octadecyl dimethyl benzyl ammonium chloride, dodecyl dimethyl benzyl ammonium chloride and di-octaalkyl dimethyl ammonium chloride.
4. The terpolymer amphoteric dispersant according to claim 1, characterized in that:
the cationic surfactant is at least one of sodium styrene sulfonate, α -alkenyl sulfonate, fatty alcohol phosphate sodium and fatty alcohol polyoxyethylene ether sulfosuccinate disodium.
5. The terpolymer amphoteric dispersant according to claim 1, characterized in that:
the initiator is at least one of potassium persulfate, ammonium persulfate, sodium bisulfite, azobisisobutyronitrile, azobisisoheptonitrile, benzoyl peroxide, dicumyl peroxide, ditert-butyl peroxide and tert-butyl peroxybenzoate.
6. The terpolymer amphoteric dispersant according to claim 1, characterized in that:
the non-ionic surfactant is methacrylic acid;
the anionic surfactant is at least one of isopropyl acrylamide, hexadecyl trimethyl ammonium bromide and octadecyl dimethyl benzyl ammonium chloride;
the cationic surfactant is at least one of sodium styrene sulfonate and α -alkenyl sulfonic acid sodium salt;
the initiator is at least one of potassium persulfate and ammonium persulfate.
7. A method for preparing a terpolymer amphoteric dispersant according to any of claims 1-6 characterized by comprising the steps of: under the protection of nitrogen, mixing a non-ionic surfactant, an anionic surfactant and an initiator, controlling the temperature at 60-85 ℃, reacting for 30-60min, adding a cationic surfactant into the mixture, adjusting the pH to 7.5-10, and continuously reacting for 6-8h under heat preservation to prepare the ternary polymer amphoteric dispersant.
8. Use of the terpolymer amphoteric dispersant according to any of claims 1 to 6 in architectural coatings.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010227698.6A CN111378063B (en) | 2020-03-27 | 2020-03-27 | Ternary polymer amphoteric dispersant and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010227698.6A CN111378063B (en) | 2020-03-27 | 2020-03-27 | Ternary polymer amphoteric dispersant and preparation method and application thereof |
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| CN111378063A true CN111378063A (en) | 2020-07-07 |
| CN111378063B CN111378063B (en) | 2023-07-07 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040121173A1 (en) * | 2002-12-20 | 2004-06-24 | Westvaco Corporation, A Corporation Of The State Of Delaware | Polymer blend compositions |
| CN101903416A (en) * | 2007-12-21 | 2010-12-01 | 巴斯夫欧洲公司 | Aqueous polymer dispersions, method for the production and use thereof |
| CN103540303A (en) * | 2012-07-12 | 2014-01-29 | 中国石油化工股份有限公司 | Composite surfactant composition as well as preparation method thereof |
-
2020
- 2020-03-27 CN CN202010227698.6A patent/CN111378063B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040121173A1 (en) * | 2002-12-20 | 2004-06-24 | Westvaco Corporation, A Corporation Of The State Of Delaware | Polymer blend compositions |
| CN101903416A (en) * | 2007-12-21 | 2010-12-01 | 巴斯夫欧洲公司 | Aqueous polymer dispersions, method for the production and use thereof |
| CN103540303A (en) * | 2012-07-12 | 2014-01-29 | 中国石油化工股份有限公司 | Composite surfactant composition as well as preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 宋晓岚等: "混合表面活性剂分散纳米CeO_2颗粒的协同效应", 《湖南大学学报(自然科学版)》 * |
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