CN111378063B - Ternary polymer amphoteric dispersant and preparation method and application thereof - Google Patents
Ternary polymer amphoteric dispersant and preparation method and application thereof Download PDFInfo
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- CN111378063B CN111378063B CN202010227698.6A CN202010227698A CN111378063B CN 111378063 B CN111378063 B CN 111378063B CN 202010227698 A CN202010227698 A CN 202010227698A CN 111378063 B CN111378063 B CN 111378063B
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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
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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
- 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
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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
- 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 dispersing agents, and discloses a ternary polymer amphoteric dispersing agent, and preparation and 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 for 30-60min at 60-85 ℃, 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 dispersing agent has a dispersing effect equivalent to that of Ming dynasty 482 and 492, has good stability, and can meet the dispersing effect required by the building coating in the use process.
Description
Technical Field
The invention belongs to the field of dispersing agents, and particularly relates to a ternary polymer amphoteric dispersing agent, and a preparation method and application thereof.
Background
The dispersant is widely used in the field of building coatings as an aid for improving and improving the dispersion properties of solid or liquid materials. Because of the characteristics of small particle size and large specific surface area of slurry particles, the agglomeration of solid particles is easy to occur. The addition of a dispersant to poorly soluble inorganic or organic containing particles helps to prevent agglomeration of the particles and maintains a uniform, stable dispersing ability. Traditional dispersing agents have low dispersing capacity and poor stability, and do not have good dispersing and stabilizing effects, so that slurry particles lose special functions.
Disclosure of Invention
To overcome the above-described drawbacks and deficiencies of the prior art, a primary object of the present invention is to provide a ternary polymeric amphoteric dispersant.
The invention also aims to provide a preparation method of the ternary polymer amphoteric dispersant.
It is a further object of the present invention to provide the use of the above-described ternary polymeric amphoteric dispersants in architectural coatings.
The aim of the invention is achieved by the following scheme:
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
Cationic surfactant C40-60 parts
1-3 parts of initiator
The nonionic surfactant A is at least one of methacrylic acid, alkylphenol ethoxylates, octanol ethoxylates, isooctanol ethoxylates, secondary alcohol ethoxylates, fatty acid methyl ester ethoxylates and the like; methacrylic acid is preferred.
The anionic surfactant B is at least one of isopropyl acrylamide, cetyl trimethyl ammonium bromide, octadecyl dimethylbenzyl ammonium chloride, dodecyl dimethylbenzyl ammonium chloride, bis-octalkyl dimethyl ammonium chloride and the like; preferably at least one of isopropyl acrylamide, cetyl trimethyl ammonium bromide and stearyl dimethyl benzyl ammonium chloride.
The cationic surfactant C is at least one of sodium styrene sulfonate, alpha-alkenyl sodium sulfonate, fatty alcohol phosphate sodium, fatty alcohol polyoxyethylene ether sulfosuccinate disodium and the like; preferably at least one of sodium styrenesulfonate and sodium alpha-alkenylsulfonate.
The initiator is at least one of potassium persulfate, ammonium persulfate, sodium persulfate, azodiisobutyronitrile, azodiisoheptonitrile, benzoyl peroxide, dicumyl peroxide, butyl peroxybenzoate and the like; preferably at least one of potassium persulfate and ammonium persulfate.
The preparation method of the ternary polymer amphoteric dispersant comprises the following steps: under the protection of nitrogen, mixing a nonionic surfactant A, an anionic surfactant B and an initiator, controlling the temperature at 60-85 ℃, adding a cationic surfactant C into the mixture after reacting for 30-60min, adjusting the pH value to 7.5-10, keeping the temperature unchanged in the whole reaction process, and continuously reacting for 6-8h to prepare the ternary polymer amphoteric dispersant.
The ternary polymer amphoteric dispersant is applied to the aspect of building paint.
Compared with the prior art, the invention has the following advantages:
the ternary polymer amphoteric dispersant prepared by the invention not only contains positively charged hydrophilic groups but also contains negatively charged hydrophilic groups, can form more adsorption anchor points, enhances the action of electrostatic repulsive force, can effectively prevent the agglomeration phenomenon among slurry particles, has a dispersion effect similar to or equivalent to that of Mingming 482 and 492 in Germany, has stable dispersion performance, can meet the dispersion effect required by the use process of the building coating, and is beneficial to the industrial production and application of the building coating.
Detailed Description
The present invention will be described in further detail with reference to examples, but embodiments of the present invention are not limited thereto.
The reagents used in the examples are commercially available as usual unless otherwise specified.
Example 1
Introducing nitrogen, mixing 35 parts of methacrylic acid, 45 parts of isopropyl acrylamide and 3 parts of potassium persulfate, reacting at 60 ℃ for 30 minutes, adding 60 parts of sodium styrene sulfonate, and continuing to react for 6 hours at the pH of 7.5 to obtain the ternary polymer 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, and continuing to react for 6 hours at pH of 8.5 to obtain the ternary polymer 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 80 ℃ for 50 minutes, adding 45 parts of alpha-sodium alkenyl sulfonate, and continuing to react for 7 hours at pH of 9.0 to obtain the ternary polymer 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 alpha-sodium alkenyl sulfonate, and continuing to react for 8 hours at the pH of 10 to prepare the ternary polymer amphoteric dispersant.
Dispersion performance test:
barium sulfate sand with the grain diameter of 40 meshes of commercial cement is adopted to prepare barium sulfate mortar with the solid content of 80 percent. Weighing 100g of cement, adding 300g of barium sulfate sand, adding 100g of water, adding dispersing agents with different weight percentages, stirring at normal temperature at a stirring rate of 1500r/min for 3min, and testing the dispersing effect of the dispersing agents.
The dispersing agent is added according to the total weight percentage of the barium sulfate mortar, and the adding amount of the dispersing agent is 0.1-0.5%. Values were tested using a Brookfield viscometer, usa.
Table 1 shows the relationship between the different addition amounts of the amphoteric dispersant and the rheological properties of the dispersion powder
| Addition amount of dispersant | 0.1％ | 0.2％ | 0.3％ | 0.4％ | 0.5％ |
| German Ming Ling 482 (m.pas) | 2072 | 921 | 379 | 267 | 94 |
| German Ming Ling 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, the amphoteric dispersants prepared in examples 1 to 4 have a better dispersing effect than the dispersing agents of Ming 482 and 492 in Germany, and the amphoteric dispersing agents are stored for 7 days at normal temperature, the solutions are not layered, and the stability is good, and the performance of the amphoteric dispersing agents is close to or reaches the same level as that of similar products in foreign countries.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (4)
1. The ternary polymer amphoteric dispersant is characterized by being prepared from the following components in parts by weight:
35-50 parts of nonionic surfactant
25-45 parts of anionic surfactant
40-60 parts of cationic surfactant
1-3 parts of an initiator;
the preparation method of the ternary polymer amphoteric dispersant is characterized by comprising the following steps of: mixing a nonionic surfactant, an anionic surfactant and an initiator under the protection of nitrogen, controlling the temperature at 60-85 ℃, adding a cationic surfactant into the mixture after reacting for 30-60min, adjusting the pH to 7.5-10, and continuing the heat preservation reaction for 6-8h to prepare the terpolymer amphoteric dispersant;
the nonionic surfactant is methacrylic acid;
the anionic surfactant is isopropyl acrylamide;
the cationic surfactant is at least one of sodium styrene sulfonate and alpha-sodium alkenyl sulfonate.
2. The ternary polymeric amphoteric dispersant of claim 1, wherein:
the initiator is at least one of potassium persulfate, ammonium persulfate, sodium persulfate, azodiisobutyronitrile, azodiisoheptonitrile, benzoyl peroxide, dicumyl peroxide, butyl peroxide and butyl peroxybenzoate.
3. The ternary polymeric amphoteric dispersant according to claim 1, the method is characterized in that:
the initiator is at least one of potassium persulfate and ammonium persulfate.
4. Use of a ternary polymeric amphoteric dispersant according to any of claims 1-3 in a construction coating.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6756129B1 (en) * | 2002-12-20 | 2004-06-29 | Meadwestvaco Corporation | Polymer blend compositions |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
|---|
| 混合表面活性剂分散纳米CeO_2颗粒的协同效应;宋晓岚等;《湖南大学学报(自然科学版)》;20051025(第05期);第95-99页 * |
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