CN106832106B - A kind of water polyacrylic acid lotion and preparation method thereof - Google Patents
A kind of water polyacrylic acid lotion and preparation method thereof Download PDFInfo
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- 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
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
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- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
- C08F2/26—Emulsion polymerisation with the aid of emulsifying agents anionic
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- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
- C08F2/30—Emulsion polymerisation with the aid of emulsifying agents non-ionic
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- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or 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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/08—Homopolymers or copolymers of acrylic acid esters
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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Abstract
The invention discloses a kind of water polyacrylic acid lotions and preparation method thereof.Partial size, low viscosity, the lotion of large arch dam water polyacrylic acid meet all kinds of stability again simultaneously greatly at present and the document of application requirement is rarely reported.The present invention is with butyl acrylate, ethyl acrylate, one or more of Isooctyl acrylate monomer is soft monomer, methyl methacrylate, styrene, methyl acrylate, one or more of acrylonitrile is hard monomer, methacrylic acid, acrylic acid, itaconic acid, acrylamide, hydroxyethyl methacrylate, hydroxy propyl methacrylate, glycidyl methacrylate, one or more of N methacrylamide is functional monomer, compound emulsifying agent and reactive emulsifier construct emulsification system, redox system initiator is initiator, it polymerize to obtain big partial size with the polymerization technique of seed emulsion using high shear pre-emulsification, the water polyacrylic acid lotion of large arch dam and low viscosity.
Description
Technical field
The present invention relates to macromolecule emulsion, the aqueous polyacrylamide of specifically a kind of big partial size, large arch dam and low viscosity
Acid esters lotion and preparation method thereof.
Background technique
Water polyacrylic acid is the lotion of predominantly acrylic ester monomer copolymerization, the institute using it as main film forming substance
Adhesive, coating of preparation etc. have nontoxic, non-environmental-pollution, there is good weatherability, colour retention, water resistance, alkali resistance, I
State from 20th century 70 the eighties come into operation, obtained in the fields such as weaving, papermaking, coating, packaging, leather at present extensively
Using.But it there is also some problems in actual application, especially compared with same kind of products at abroad, there is also be mutually on duty
Away from mechanical insufficient with calcium particle stability if solid content is relatively low, the problems such as water-fast wet rubbing performance is bad.
Current energy-saving and emission-reduction, it is environmentally protective be that and the multifunctional aqueous polyacrylate resin of large arch dam meets needed for development
This trend, can reduce energy consumption storage and transportation and simplify production procedure, this just need product to be provided simultaneously with multi-functional, compatibility is good, energy
It adapts to kinds of processes, can easily be accommodated multiple performance；Conventional emulsion polymerization works as lotion solid content >=55%, the viscosity of emulsion system
Can it is higher, not only seriously affect the adjusting of the practical application and performance of next step, and may influence polymerization reaction it is normal into
Row；Emulsion system viscosity can be reduced by reducing emulsifier in emulsion polymerization, increasing partial size, but bring side effect is lotion
Chemistry, machinery, storage stability be deteriorated, compounding increase with application function problem, generate form a film physical property and adhesive fastness it is bad
Etc. problems.
It is found by literature search, the patent and research paper of related polyacrylate dispersion preparation aspect are more but big
Partial size, low viscosity, the lotion of large arch dam water polyacrylic acid meet all kinds of stability again simultaneously and the document of application requirement is fresh
It has been reported that.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the problems of the above-mentioned prior art, provide a kind of big partial size,
High solids content and the water polyacrylic acid lotion of low viscosity and preparation method thereof, it is the chemical stability of the lotion, mechanically stable
Property with have excellent storage stability, film forming physical property, compatibility, water resistance etc. are had excellent performance, and can apply to different field.
A kind of technical solution that the present invention uses are as follows: a kind of water polyacrylic acid lotion, with butyl acrylate, propylene
One or more of acetoacetic ester, Isooctyl acrylate monomer are soft monomer, methyl methacrylate, styrene, methyl acrylate, third
One or more of alkene nitrile is hard monomer, methacrylic acid, acrylic acid, itaconic acid, acrylamide, hydroxyethyl methacrylate second
One or more of ester, hydroxy propyl methacrylate, glycidyl methacrylate, N methacrylamide are functionality
Monomer, compound emulsifying agent and reactive emulsifier construct emulsification system, and redox system initiator is initiator, are cut using height
Pre-emulsification is cut to polymerize to obtain the water polyacrylic acid lotion of big partial size, large arch dam and low viscosity with the polymerization technique of seed emulsion
(PA lotion), the latex particle size of synthesis is in 250-400nm, particle diameter distribution PDI≤0.1, viscosity 30-200mPas, solid content
50.0-60.0%.
Monomer Formations are designed and are combined with combined emulsification system by particle design and the technique matched by the present invention
Means, reactive emulsifier is introduced into acrylic acid ester emulsion emulsification system, at the same reduce emulsification dosage, promoted optimization its
Efficiency, and the stable emulsifying system for designing required partial size and distribution is constructed using high shear pre-emulsification, polymerization reaction is adopted
The method for preparing polyacrylate dispersion with the polymerization technique of seeding polymerization, Redox Initiator increases partial size, drop to reach
Low viscosity, the purpose for improving solid content, emphasis solve big partial size lotion and prepare existing all kinds of stability techniques problems and existing
There is defect existing for large arch dam lotion.
Further, above-mentioned water polyacrylic acid lotion uses each raw material of following mass percent: soft monomer 30-
50%, hard monomer 5-15%, functional monomer 3-10%, initiator 0.5-1.2%, compound emulsifying agent 0.3-1.0%, response type
Emulsifier 0.1-0.5%, sodium bicarbonate 0.2-0.5%, post-treatment agent 0.01-0.03%, deionized water 40-50%.
Further, the redox system initiator includes oxidant, reducing agent and promotor, and oxidant was
One or more of ammonium sulfate, potassium peroxydisulfate, hydrogen peroxide, reducing agent be sodium hydrosulfite, sodium hydrogensulfite, sodium pyrosulfite,
One or more of rongalite, promotor are one or more of ferrous sulfate, frerrous chloride.
Further, the compound emulsifying agent is the mixture of anion and nonionic emulsifier；Anion emulsifier
For lauryl sodium sulfate, neopelex, alkylol polyoxyethylene ammonium sulfate, sulfosuccinic dibutyl phthalate sodium salt,
One or more of ethoxylated alkyl alcohol ether sulfosuccinic acid semiester disodium salt, alkyl diphenyl ether disulphonic acid sodium；Nonionic
Emulsifier is isomeric alcohol polyethenoxy ether (8-12EO), isomeric alcohol polyethenoxy ether (25-40EO), fatty alcohol polyoxyethylene ether
One or more of (8-12EO), fatty alcohol polyoxyethylene ether (25-40EO), isomery secondary alcohol polyoxyethylene ether (8-12EO)；
Nonionic emulsifier/anion emulsifier molar ratio is 1:1-5.
Further, the reactive emulsifier is methacrylic acid hydroxide sodium dimercaptosulphanatein, allyloxy hydroxypropyl sulfonic acid
One or more of sodium, methyl allyl alcohol polyoxyethylene ether, isoamyl alcohol polyoxyethylene ether.
Further, the post-treatment agent includes Oxidizing and Reducing Agents, and the oxidant is ammonium persulfate, peroxide
Change one or more of hydrogen, tert-butyl hydroperoxide, the reducing agent is sodium hydrogensulfite, in ascorbic acid, rongalite
One or more.
The another technical solution that the present invention uses are as follows: the preparation method of water polyacrylic acid lotion comprising following
Step: dissolving most of compound emulsifying agent water and stir, and soft monomer, hard monomer, functional monomer and anti-is then added
It answers type emulsifier for mixing to emulsify 15-30 minutes, is then carried out high-shear emulsifying 10-20 minutes using high-shearing dispersion emulsifying machine,
Obtain uniform and stable pre-emulsion A (shear rate: 8000-10000rpm, cutter shearing line speed: 10-13m/s)；
By the deionized water dissolving wiring solution-forming B of the oxidant in redox system initiator；
By the deionized water dissolving wiring solution-forming C of the reducing agent in redox system initiator；
By the deionized water dissolving wiring solution-forming D of the promotor in redox system initiator；
By sodium bicarbonate and remaining compound emulsifying agent, solution E is stirred and dissolved into remaining deionized water；
Oxidant deionized water dissolving wiring solution-forming F1 in post-treatment agent, the reducing agent deionization in post-treatment agent
Water dissolves wiring solution-forming F2；
Part pre-emulsion A and solution E is taken to be added in reaction kettle, heating stirring, in 25-45 DEG C of addition solution D of temperature
Solution B, C with part, initiated polymerization obtain seed emulsion；Then it is added dropwise at 55-75 DEG C and then into seed emulsion
Remaining pre-emulsion A and remaining solution B, C control drop rate, by remaining solution B, C and remaining pre-emulsion A
It is added together in 3-5 hours, after heat preservation 30-60 minutes, adds post-treatment agent solution F1 and F2, keep the temperature 30-60 minutes, cooling,
It is 7-8 with the pH that ammonium hydroxide adjusts solution, filtering and discharging is newborn up to the water polyacrylic acid of big partial size, large arch dam and low viscosity
Liquid.
The present invention using particle design and the high shear pre-emulsification technology that matches, formula design with by reactive emulsifier
It introduces combination emulsification system to combine, constructs the stable emulsifying system of design required partial size and distribution, the lotion of preparation
Latex particle size 250-400nm, particle diameter distribution PDI≤0.1, viscosity 30-200mPas, solid content 50.0-60.0% it is aqueous
Polyacrylate dispersion preferably solves big partial size, large arch dam lotion prepares existing stability and application and compatibility deficiency
Etc. technical problems；It is not applied only to spinning coating field, and can apply in fields such as papermaking, coating, packaging, leathers
On.
Specific embodiment
Following embodiment is intended to the present invention is described in detail, should not be construed as limiting the invention.
Embodiment 1
Lotion constituent:
Preparation method: 98% alkylol polyoxyethylene ammonium sulfate and sulfosuccinic dibutyl phthalate sodium salt, isomery alcohol are gathered
After ethylene oxide ether (8-12EO) is dissolved in 60% deionized water, butyl acrylate, ethyl acrylate, benzene second are added under stiring
Alkene, methyl methacrylate, acrylonitrile, acrylic acid, N hydroxymethyl acrylamide, allyloxy hydroxypropyl azochlorosulfonate acid sodium, stirring cream
Change 10-20 minutes, then carries out high-shearing dispersion emulsifying machine emulsion dispersion 10 minutes, obtain uniform and stable pre-emulsion.
By sodium bicarbonate and a small amount of remaining compound emulsifying agent, it is added to most of remaining deionized water equipped with stirring
Device, reflux condensing tube, dropping funel, thermometer four-hole boiling flask in and stir, then take 2.5% pre-emulsion be added reaction
Bottle；Heating stirring causes poly- in 30 DEG C of addition redox initiator sodium hydrosulfites of temperature, ferrous sulfate and 15% ammonium persulfate
Reaction is closed, seed emulsion is obtained；Then remaining pre-emulsion is added dropwise into seed emulsion at 60-65 DEG C and redox is drawn
Agent sodium hydrogensulfite and 85% ammonium persulfate are sent out, is added together in 3 hours, after sixty minutes, post-treatment solution mistake is added dropwise in heat preservation
Hydrogen oxide, rongalite, after drop, insulation reaction 1 hour, cooling, filtering, to adjust the pH of solution with ammonium hydroxide be 7-8, and filtering and discharging is
Obtain big partial size large arch dam PA lotion.
Embodiment 2
Lotion constituent:
Preparation method: alkyl diphenyl ether disulphonic acid sodium and isomery secondary alcohol polyoxyethylene ether (8-12EO) are dissolved in 1/2 and gone
After in ionized water, under stiring be added Isooctyl acrylate monomer, ethyl acrylate, styrene, methyl methacrylate, acrylonitrile,
Itaconic acid, acrylamide, hydroxy propyl methacrylate, hydroxy propyl methacrylate stirring and emulsifying 15 minutes, then carry out height and cut
It cuts dispersion emulsifying machine emulsion dispersion 12 minutes, obtains uniform and stable pre-emulsion.
By sodium bicarbonate and most of remaining deionized water be added to equipped with blender, reflux condensing tube, dropping funel,
It in the four-hole boiling flask of thermometer and stirs, then takes 2% pre-emulsion that reaction flask is added；Heating stirring adds at 25-30 DEG C of temperature
Enter redox initiator sodium hydrosulfite, ferrous sulfate and 15% ammonium persulfate, initiated polymerization and obtains seed emulsion；Then
Remaining pre-emulsion and redox initiator sodium hydrogensulfite and 85% over cure is added dropwise into seed emulsion at 65-68 DEG C
Sour ammonium adds together in 4 hours, and after heat preservation 45 minutes, post-treatment solution hydrogen peroxide, ascorbic acid is added dropwise, after drop, heat preservation
Reaction heat preservation 45 minutes, cooling, filtering are 7-8 with the pH that ammonium hydroxide adjusts solution, and filtering and discharging is up to big partial size large arch dam PA cream
Liquid.
Embodiment 3
Lotion constituent:
Preparation method: by 95% isomeric alcohol polyethenoxy ether (40EO) and ethoxylated alkyl alcohol ether sulfosuccinic acid half
After ester disodium salt is dissolved in 55% deionized water, butyl acrylate, ethyl acrylate, methacrylic acid contracting are added under stiring
Water glyceride, methyl methacrylate, acrylonitrile, acrylic acid, acrylamide, methacrylic acid hydroxide sodium dimercaptosulphanatein, stirring and emulsifying
It 20 minutes, then carries out high-shearing dispersion emulsifying machine emulsion dispersion 10 minutes, obtains uniform and stable pre-emulsion.
By sodium bicarbonate and a small amount of remaining compound emulsifying agent, it is added to most of remaining deionized water equipped with stirring
Device, reflux condensing tube, dropping funel, thermometer four-hole boiling flask in and stir, then take 3% pre-emulsion be added reaction flask；
It is anti-to cause polymerization in 35 DEG C of addition redox initiator sodium hydrosulfites of temperature, ferrous sulfate and 10% ammonium persulfate for heating stirring
It answers, obtains seed emulsion；Then remaining pre-emulsion and redox initiator is added dropwise into seed emulsion at 68-72 DEG C
Sodium pyrosulfite and 90% ammonium persulfate, add together in 3.5 hours, and after heat preservation 45 minutes, post-treatment solution peroxidating is added dropwise
Hydrogen, ascorbic acid, after drop, insulation reaction 0.5 hour, cooling, filtering, to adjust the pH of solution with ammonium hydroxide be 7-8, and filtering and discharging is
Obtain big partial size large arch dam PA lotion.
Embodiment 4
Lotion constituent:
Preparation method: by 98% lauryl sodium sulfate and whole sulfosuccinic dibutyl phthalate sodium salts, isomery alcohol polyoxy
After vinethene (40EO) is dissolved in 55% deionized water, under stiring be added butyl acrylate, ethyl acrylate, styrene,
Methacrylic acid, acrylonitrile, acrylamide, N hydroxymethyl acrylamide, isoamyl alcohol polyoxyethylene ether, stirring and emulsifying 20 are divided
Then clock carries out high-shearing dispersion emulsifying machine emulsion dispersion 15 minutes, obtains uniform and stable pre-emulsion；
By sodium bicarbonate and 2% lauryl sodium sulfate and most of remaining deionized water be added to equipped with blender,
Reflux condensing tube, dropping funel, thermometer four-hole boiling flask in and stir, then take 2% pre-emulsion be added reaction flask；Heating
Stirring, in 35 DEG C of addition redox initiator sodium hydrosulfites of temperature, ferrous sulfate and 10% ammonium persulfate, initiated polymerization,
Obtain seed emulsion；Then remaining pre-emulsion is added dropwise into seed emulsion at 65-70 DEG C and redox initiator is sub-
Sodium bisulfate and 90% ammonium persulfate, add together in 4 hours, after heat preservation 30 minutes, dropwise addition post-treatment solution hydrogen peroxide,
Rongalite, after drop, insulation reaction 1 hour, cooling, filtering, to adjust the pH of solution with ammonium hydroxide be 7-8, and filtering and discharging is up to big grain
Diameter large arch dam PA lotion.
For a person skilled in the art, after reading above description, various changes and modifications undoubtedly be will be evident.
Therefore, appended claims should regard the whole variations and modifications for covering true intention and range of the invention as.It is weighing
The range and content of any and all equivalences, are all considered as still belonging to the intent and scope of the invention within the scope of sharp claim.
Claims (8)
1. a kind of water polyacrylic acid lotion, which is characterized in that with butyl acrylate, ethyl acrylate, Isooctyl acrylate monomer
One or more of be soft monomer, one or more of methyl methacrylate, styrene, methyl acrylate, acrylonitrile
For hard monomer, methacrylic acid, acrylic acid, itaconic acid, acrylamide, hydroxyethyl methacrylate, hydroxy propyl methacrylate,
One or more of glycidyl methacrylate, N methacrylamide are functional monomer, compound emulsifying agent and anti-
The type emulsifier of answering constructs emulsification system, and redox system initiator is initiator, using high shear pre-emulsification and seed emulsion
Polymerization technique polymerize to obtain the water polyacrylic acid lotion of big partial size, large arch dam and low viscosity, the latex particle size of synthesis
In 250-400nm, particle diameter distribution PDI≤0.1, viscosity 30-200mPas, solid content 50.0-60.0%；
The water polyacrylic acid lotion uses each raw material of following mass percent: soft monomer 30-50%, hard monomer 5-
15%, functional monomer 3-10%, initiator 0.5-1.2%, compound emulsifying agent 0.3-1.0%, reactive emulsifier 0.1-0.5%, carbon
Sour hydrogen sodium 0.2-0.5%, post-treatment agent 0.01-0.03%, deionized water 40-50%；
The reactive emulsifier is methacrylic acid hydroxide sodium dimercaptosulphanatein, allyloxy hydroxypropyl azochlorosulfonate acid sodium, prenol are poly-
One or more of ethylene oxide ether.
2. water polyacrylic acid lotion according to claim 1, which is characterized in that the redox system is drawn
Hair agent includes oxidant, reducing agent and promotor, and oxidant is one of ammonium persulfate, potassium peroxydisulfate, hydrogen peroxide or several
Kind, reducing agent is one or more of sodium hydrosulfite, sodium hydrogensulfite, sodium pyrosulfite, rongalite, and promotor is that sulfuric acid is sub-
One or more of iron, frerrous chloride.
3. water polyacrylic acid lotion according to claim 1, which is characterized in that the compound emulsifying agent is yin
The mixture of ion and nonionic emulsifier.
4. water polyacrylic acid lotion according to claim 3, which is characterized in that the anion emulsifier is
Lauryl sodium sulfate, neopelex, alkylol polyoxyethylene ammonium sulfate, sulfosuccinic dibutyl phthalate sodium salt, second
One or more of oxygroup alkyl alcohol ether sulfosuccinic acid semiester disodium salt, alkyl diphenyl ether disulphonic acid sodium.
5. water polyacrylic acid lotion according to claim 3, which is characterized in that the nonionic emulsifier is
One or more of isomeric alcohol polyethenoxy ether, fatty alcohol polyoxyethylene ether, secondary alcohol polyoxyethylene ether.
6. water polyacrylic acid lotion according to claim 3, which is characterized in that nonionic emulsifier/anion cream
The molar ratio of agent is 1:1-5.
7. water polyacrylic acid lotion according to claim 1, which is characterized in that the post-treatment agent includes oxygen
Agent and reducing agent, the oxidant are one or more of ammonium persulfate, hydrogen peroxide, tert-butyl hydroperoxide, institute
The reducing agent stated is one or more of sodium hydrogensulfite, ascorbic acid, rongalite.
8. the preparation method of any one of the claim 1-7 water polyacrylic acid lotion comprising following steps:
Most of compound emulsifying agent water is dissolved and stirred, soft monomer, hard monomer, functional monomer and reaction is then added
Type emulsifier for mixing emulsifies 15-30 minutes, is then carried out high-shear emulsifying 10-20 minutes, is obtained using high-shearing dispersion emulsifying machine
To uniform and stable pre-emulsion A；
By the deionized water dissolving wiring solution-forming B of the oxidant in redox system initiator；
By the deionized water dissolving wiring solution-forming C of the reducing agent in redox system initiator；
By the deionized water dissolving wiring solution-forming D of the promotor in redox system initiator；
By sodium bicarbonate and remaining compound emulsifying agent, solution E is stirred and dissolved into remaining deionized water；
Oxidant deionized water dissolving wiring solution-forming F1 in post-treatment agent, the reducing agent deionized water in post-treatment agent are molten
Solve wiring solution-forming F2；
Part pre-emulsion A and solution E is taken to be added in reaction kettle, heating stirring, in 25-45 DEG C of addition solution D of temperature and portion
Point solution B, C, initiated polymerization obtains seed emulsion；Then it is added dropwise at 55-75 DEG C and then into seed emulsion surplus
Remaining pre-emulsion A and remaining solution B, C controls drop rate, remaining solution B, C and remaining pre-emulsion A is existed
It is added together in 3-5 hours, after heat preservation 30-60 minutes, adds post-treatment agent solution F1 and F2, keep the temperature 30-60 minutes, cool down, use
Ammonium hydroxide adjust solution pH be 7-8, filtering and discharging up to big partial size, large arch dam and low viscosity water polyacrylic acid lotion.
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Inventor after: Qu Shaomin Inventor after: Bao Jiejie Inventor after: Zhou Jian Inventor after: Qi Pingping Inventor after: Miao Yulong Inventor before: Qu Shaomin Inventor before: Bao Jiejie Inventor before: Zhou Jian Inventor before: Qi Pingping Inventor before: Miao Yulong |