CN103894108B - Block type aqueous high molecular dispersant - Google Patents
Block type aqueous high molecular dispersant Download PDFInfo
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- CN103894108B CN103894108B CN201210579243.6A CN201210579243A CN103894108B CN 103894108 B CN103894108 B CN 103894108B CN 201210579243 A CN201210579243 A CN 201210579243A CN 103894108 B CN103894108 B CN 103894108B
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- dispersant
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Abstract
The invention discloses a kind of block type polymer dispersant, the strand of described dispersant is made up of polyacrylic acid block and polyethylene glycol acrylate block, described polyacrylic acid block makes pigment anchoring section, polyethylene glycol acrylate makes solvent chain, and the molecular formula of described dispersant is:
Description
Technical field
The present invention relates to a kind of pigment macromolecule dispersing agent with new structure, be specifically related to a kind of block type aqueous high molecular dispersant.
Background technology
In the industry such as coating, ink, the dispersion of pigment is the important step of manufacturing technology, and pigment forms solid-liquid dispersion in coating, ink, and dispersion is thermodynamically unstable, in painting, storage, construction application, even all may assemble in film forming procedure.In order to obtain stable homogeneous dispersion, often need to use dispersant, traditional Small molecular dispersant, the poor stability of system, easily cause dispersed pigment particles reassemble or precipitate from desorb particle surface, also have adverse effect to paint film appearance, hardness and the character such as ageing-resistant.Macromolecule dispersing agent has become the dispersant with high efficiency of a new generation in recent years, and it is dispersed with remarkable result to pigment, especially has sizable effect to the aspect such as wetability, stability, also has larger improvement to the application performance of pigment.Macromolecule dispersing agent refers to that molecular mass has surface-active macromolecular compound more than thousands of, belong to surfactant in essence, and in the macromolecule dispersing agent of various structure type, block type polymer dispersant is the most effective.
Summary of the invention
Goal of the invention: the present invention, in order to solve the deficiencies in the prior art, provides a kind of block type aqueous high molecular dispersant.
Technical scheme: in order to realize foregoing invention object, the technical solution used in the present invention is:
A kind of block type polymer dispersant, the strand of described dispersant is made up of polyacrylic acid block and polyethylene glycol acrylate block, described polyacrylic acid block makes pigment anchoring section, and polyethylene glycol acrylate makes solvent chain, and the molecular formula of described dispersant is:
As preferably, described X1 is H or CH3; X2 is H or CH3; Y=1 ~ 30, m=5 ~ 100, n=1 ~ 50.
As preferably, described y=4 ~ 20.
As preferably, described y=5 ~ 15.
As preferably, described m=5 ~ 100
As preferably, described m=20 ~ 180.
As preferably, described n=5 ~ 40.
As preferably, described n=10 ~ 20.
Its molecular weight is 1000 ~ 20000 grams/mol, and content is 50 ~ 98%(mass fraction in the polymer); Polyacrylic acid block makes anchoring section, and its molecular weight is 100 ~ 2000 grams/mol, and content is 2 ~ 50%(mass fraction in the polymer).
Beneficial effect: compared with prior art, 1) to prepare block type polymer dispersant synthesis technique simple for single electron transfer active free radical polymerization, and product purity is high, of light color, can directly use; 2) block type aqueous high molecular dispersant can quick moistening pigment particles, shortens milling time; 3) and random copolymer dispersant compare, the sterically hindered effect of block type aqueous high molecular dispersant can prevent the pigment particles separating flocculation from reuniting again, thus avoid pigment particles flocculation and precipitation in storage process, give pigment and there is more high covering power and tinctorial strength.
Detailed description of the invention
The present invention will be described in detail below.
Embodiment 1
A kind of block type polymer dispersant, strand is made up of polyacrylic acid block and polyethylene glycol acrylate block, and polyacrylic acid block makes pigment anchoring section, and polyethylene glycol acrylate makes solvent chain, and the molecular formula of dispersant is:
Wherein, X1 is H or CH3; X2 is H or CH3; Y=1, m=5, n=1, the molecular weight of block type polymer dispersant is 1000 grams/mol, and content is 50%(mass fraction in the polymer); Polyacrylic acid block makes anchoring section, and its molecular weight is 100 grams/mol, and content is 2%(mass fraction in the polymer).
Embodiment 2
A kind of block type polymer dispersant, strand is made up of polyacrylic acid block and polyethylene glycol acrylate block, and polyacrylic acid block makes pigment anchoring section, and polyethylene glycol acrylate makes solvent chain, and the molecular formula of dispersant is:
Wherein, X1 is H or CH3; X2 is H or CH3; Y=4, m=20, n=20, the molecular weight of block type polymer dispersant is 20000 grams/mol, and content is 98%(mass fraction in the polymer); Polyacrylic acid block makes anchoring section, and its molecular weight is 2000 grams/mol, and content is 50%(mass fraction in the polymer).
Embodiment 3:
A kind of block type polymer dispersant, strand is made up of polyacrylic acid block and polyethylene glycol acrylate block, and polyacrylic acid block makes pigment anchoring section, and polyethylene glycol acrylate makes solvent chain, and the molecular formula of dispersant is:
Wherein, X1 is H or CH3; X2 is H or CH3; Y=20, m=50, n=20, the molecular weight of block type polymer dispersant is 20000 grams/mol, and content is 98%(mass fraction in the polymer); Polyacrylic acid block makes anchoring section, and its molecular weight is 2000 grams/mol, and content is 50%(mass fraction in the polymer).
Embodiment 4
A kind of block type polymer dispersant, strand is made up of polyacrylic acid block and polyethylene glycol acrylate block, and polyacrylic acid block makes pigment anchoring section, and polyethylene glycol acrylate makes solvent chain, and the molecular formula of dispersant is:
Wherein, X1 is H or CH3; X2 is H or CH3; Y=20, m=120, n=40, the molecular weight of block type polymer dispersant is 5000 grams/mol, and content is 60%(mass fraction in the polymer); Polyacrylic acid block makes anchoring section, and its molecular weight is 1000 grams/mol, and content is 25%(mass fraction in the polymer).
Embodiment 5:
A kind of block type polymer dispersant, strand is made up of polyacrylic acid block and polyethylene glycol acrylate block, and polyacrylic acid block makes pigment anchoring section, and polyethylene glycol acrylate makes solvent chain, and the molecular formula of dispersant is:
Wherein, X1 is H or CH3; X2 is H or CH3; Y=30, m=180, n=10, the molecular weight of block type polymer dispersant is 2500 grams/mol, and content is 60%(mass fraction in the polymer); Polyacrylic acid block makes anchoring section, and its molecular weight is 500 grams/mol, and content is 30%(mass fraction in the polymer).
Claims (5)
1. a block type aqueous high molecular dispersant, is characterized in that: the strand of described dispersant is made up of polyacrylic acid block and polyethylene glycol acrylate block; Described polyacrylic acid block is pigment anchor chain, and described polyethylene glycol acrylate is solvent chain; The molecular formula of described dispersant is:
Wherein, the X in molecular formula
1for H or CH
3; X
2for H or CH
3; Y=1 ~ 30, m=5 ~ 100, n=1 ~ 50; Its molecular weight of described macromolecule dispersing agent is for being 1000 ~ 20000 grams/mol, and content is in the polymer 50 ~ 98% (mass fractions); Described its molecular weight of anchor chain polyacrylic acid block is 100 ~ 2000 grams/mol, and content is in the polymer 2 ~ 50% (mass fractions).
2. block type aqueous high molecular dispersant as claimed in claim 1, is characterized in that: described y=4 ~ 20.
3. block type aqueous high molecular dispersant as claimed in claim 2, is characterized in that: described y=5 ~ 15.
4. block type aqueous high molecular dispersant as claimed in claim 1, is characterized in that: described n=5 ~ 40.
5. block type aqueous high molecular dispersant as claimed in claim 4, is characterized in that: described n=10 ~ 20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210579243.6A CN103894108B (en) | 2012-12-28 | 2012-12-28 | Block type aqueous high molecular dispersant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210579243.6A CN103894108B (en) | 2012-12-28 | 2012-12-28 | Block type aqueous high molecular dispersant |
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| CN103894108A CN103894108A (en) | 2014-07-02 |
| CN103894108B true CN103894108B (en) | 2016-04-13 |
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| CN201210579243.6A Active CN103894108B (en) | 2012-12-28 | 2012-12-28 | Block type aqueous high molecular dispersant |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104311761A (en) * | 2014-10-13 | 2015-01-28 | 南京大学 | Comb-type polyether block polyacrylic copolymer and preparation method thereof |
| CN105345013B (en) * | 2015-11-10 | 2017-07-07 | 南京瑞盈环保科技有限公司 | A kind of preparation method of the narrow flake silver powder of sheet rate particle diameter distribution high |
| CN105860811A (en) * | 2016-06-22 | 2016-08-17 | 安徽汇利涂料科技有限公司 | Waterborne polyurethane paint and method for preparing same |
| CN110165215A (en) * | 2018-02-07 | 2019-08-23 | 重庆消烦多新材料有限公司 | A kind of lithium battery positive and negative anodes dispersing agent and preparation method thereof |
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| US5548049A (en) * | 1992-07-03 | 1996-08-20 | Chemishe Fabrik Stockhausen Gmbh | Copolymers of allyliminodiacetic acid with unsaturated carboxylic acids and their use as complexing agents, peroxide stabilizers, builders in washing and cleaning products and dispersing agents |
| CN1784263A (en) * | 2003-03-03 | 2006-06-07 | 克雷.瓦利有限公司 | Use of a polymer dispersant as a fluidising agent for hydraulic binder compositions and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102083877B (en) * | 2008-07-07 | 2014-03-12 | 阿科玛股份有限公司 | Amphiphilic block copolymer formulations |
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2012
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| CN87102438A (en) * | 1986-06-27 | 1988-01-06 | 川崎重工业株式会社 | Carbon solid-aqueous slurry is with dispersion agent and cooperated the carbon solid-water slurry composition of this dispersion agent |
| CN1077718A (en) * | 1992-04-21 | 1993-10-27 | 帝国化学工业公司 | Multipolymer |
| US5548049A (en) * | 1992-07-03 | 1996-08-20 | Chemishe Fabrik Stockhausen Gmbh | Copolymers of allyliminodiacetic acid with unsaturated carboxylic acids and their use as complexing agents, peroxide stabilizers, builders in washing and cleaning products and dispersing agents |
| CN1784263A (en) * | 2003-03-03 | 2006-06-07 | 克雷.瓦利有限公司 | Use of a polymer dispersant as a fluidising agent for hydraulic binder compositions and preparation method thereof |
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| CN103894108A (en) | 2014-07-02 |
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