CN110330601A - Anti- after-tack of one kind returns viscous type coarse whiting ground dispersant and preparation method thereof - Google Patents
Anti- after-tack of one kind returns viscous type coarse whiting ground dispersant and preparation method thereof Download PDFInfo
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- CN110330601A CN110330601A CN201910674623.XA CN201910674623A CN110330601A CN 110330601 A CN110330601 A CN 110330601A CN 201910674623 A CN201910674623 A CN 201910674623A CN 110330601 A CN110330601 A CN 110330601A
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- coarse whiting
- tack
- type coarse
- reaction
- viscous type
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- 239000002270 dispersing agent Substances 0.000 title claims abstract description 24
- 241000276489 Merlangius merlangus Species 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 239000000178 monomer Substances 0.000 claims abstract description 17
- -1 alkyl phosphoric acid ester Chemical class 0.000 claims abstract description 16
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 150000002191 fatty alcohols Chemical class 0.000 claims abstract description 11
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 claims abstract description 8
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 7
- 229920000570 polyether Polymers 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 5
- 239000003999 initiator Substances 0.000 claims abstract description 5
- 239000011261 inert gas Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 11
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 8
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical group [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 6
- XXROGKLTLUQVRX-UHFFFAOYSA-N hydroxymethylethylene Natural products OCC=C XXROGKLTLUQVRX-UHFFFAOYSA-N 0.000 claims description 6
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 6
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 5
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 claims description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical group [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 4
- BXWNKGSJHAJOGX-UHFFFAOYSA-N hexadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCO BXWNKGSJHAJOGX-UHFFFAOYSA-N 0.000 claims description 4
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 4
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 4
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 4
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 3
- 229940079827 sodium hydrogen sulfite Drugs 0.000 claims description 3
- 235000010265 sodium sulphite Nutrition 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 150000004808 allyl alcohols Chemical group 0.000 claims description 2
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- 229960000541 cetyl alcohol Drugs 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims 1
- 239000000571 coke Substances 0.000 claims 1
- 230000000977 initiatory effect Effects 0.000 claims 1
- LHTVMBMETNGEAN-UHFFFAOYSA-N pent-1-en-1-ol Chemical compound CCCC=CO LHTVMBMETNGEAN-UHFFFAOYSA-N 0.000 claims 1
- 150000004968 peroxymonosulfuric acids Chemical class 0.000 claims 1
- 239000011591 potassium Substances 0.000 claims 1
- 229910052700 potassium Inorganic materials 0.000 claims 1
- 239000002002 slurry Substances 0.000 abstract description 12
- 238000000227 grinding Methods 0.000 abstract description 10
- 238000007259 addition reaction Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- 229920000642 polymer Polymers 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 238000013019 agitation Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 238000010792 warming Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- PHTQWCKDNZKARW-UHFFFAOYSA-N isoamylol Chemical compound CC(C)CCO PHTQWCKDNZKARW-UHFFFAOYSA-N 0.000 description 2
- 239000011859 microparticle Substances 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 description 2
- 235000010262 sodium metabisulphite Nutrition 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical compound C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002170 ethers Chemical group 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- 235000019394 potassium persulphate Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229940001584 sodium metabisulfite Drugs 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
Classifications
-
- 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
- C08F2/00—Processes of polymerisation
- C08F2/38—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
-
- 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/02—Compounds of alkaline earth metals or magnesium
- C09C1/021—Calcium carbonates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/006—Combinations of treatments provided for in groups C09C3/04 - C09C3/12
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/04—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
- C09C3/041—Grinding
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/10—Treatment with macromolecular organic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The invention discloses anti-after-tack of one kind to return viscous type coarse whiting ground dispersant, and preparation method includes the following steps: step 1, and fatty alcohol and phosphorus pentoxide are sufficiently reacted under atmosphere of inert gases, obtain alkyl phosphoric acid ester monomer；Step 2 mixes the alkyl phosphoric acid ester monomer with unsaturated polyether and water, is then slowly added to acrylic acid, initiator solution and chain-transferring agent solution simultaneously, sufficiently reaction after adding；Step 3 after fully reacting, is neutralized to neutrality with base reagent, obtains anti-after-tack and returns viscous type coarse whiting ground dispersant.Cost of material of the present invention is low, and reaction condition is mild, environmental-friendly without additional addition reaction dissolvent, and obtained anti-after-tack returns viscous type coarse whiting ground dispersant with grinding performance is greatly improved, and prevents slurry from after-tacking and returns the advantages such as viscous.
Description
Technical field
The present invention relates to coarse whiting ground dispersant preparation fields, more particularly to a kind of anti-after-tack to return viscous type coarse whiting ground dispersion
Agent and preparation method thereof.
Background technique
Dispersing agent is widely used in the wet grinding production of overweight calcium, and grinding for calcium carbonate slurry can be significantly reduced
Viscosity is ground, reduces to return to glue after grinding and after-tack, increase the stability of slurry, coarse whiting product quality is worn away and improved for reduction and is suffered from
Important reuse.
Current study show that the dispersion mechanism of coarse whiting ground dispersant are as follows: 1. Polymeric polycarboxylate's Molecular Adsorptions are in carbon
Sour calcium microparticle surfaces are to form electric double layer, with electrostatic repulsion；2. Polymer adsorption is in microparticle surfaces, in each particle
Between play certain steric hindrance.
Absolutely most of coarse whiting ground dispersant is all polycarboxylic acid salt's product of straight chain type currently on the market
(CN201711416392.X), mainly playing peptizaiton largely is main chain bring, and main chain is in certain length range
Interior grinding effect is best, too long or too short, can all influence grinding effect, so that the promotion of grinding performance is restrict, it is heavier
Want, the polymer of this kind of straight main chain, it is ground after slurry viscosity it is big, and be easy to appear back after standing a period of time
It is viscous to return the situations such as viscous, influence the quality of coarse whiting product.
Summary of the invention
The present invention is intended to provide a kind of anti-after-tack returns viscous type coarse whiting ground dispersant and preparation method thereof, to solve background skill
Drawbacks described above existing for art.
The present invention realizes by the following technical solutions:
It is a kind of to prevent after-tacking the preparation method for returning viscous type coarse whiting ground dispersant, include the following steps:
Fatty alcohol and phosphorus pentoxide are sufficiently reacted under atmosphere of inert gases, obtain alkyl phosphate list by step 1
Body；
Step 2 mixes the alkyl phosphoric acid ester monomer with unsaturated polyether and water, is then slowly added to propylene simultaneously
Acid, initiator solution and chain-transferring agent solution, sufficiently reaction after adding；
Step 3 after fully reacting, is neutralized to neutrality with base reagent, obtains anti-after-tack and returns viscous type coarse whiting ground dispersion
Agent.
Preferably, the fatty alcohol is selected from least one of n-octyl alcohol, palmityl alcohol, laruyl alcohol.
The parts by weight of each component are as follows as a preferred technical solution:
10-30 parts of alkyl phosphoric acid ester monomer,
20-30 parts of unsaturated polyether,
50-60 parts of acrylic acid.
The unsaturated polyether is selected from allyl alcohol polyethenoxy ether, isoamyl alcohol polyoxyethylene ether, methacrylic polyoxy
At least one of vinethene；
The initiator is selected from least one of ammonium persulfate, sodium peroxydisulfate, potassium peroxydisulfate, hydrogen peroxide, additional amount
For the 0.1-10wt% of acrylic monomers；
The chain-transferring agent is selected from least one of sodium hydrogensulfite, sodium sulfite, sodium pyrosulfite, additional amount third
The 0.2-20wt% of acrylic monomer；
The base reagent is selected from least one of sodium hydroxide, potassium hydroxide, liquefied ammonia, mass concentration 30-50%.
As further preferred technical solution, the reaction temperature of the step 1 is 40-60 DEG C, reaction time 1-
4h.The molar ratio of fatty alcohol and phosphorus pentoxide is 2:1 in step 1.To guarantee fully reacting, any one raw material may be selected
Appropriateness is excessive.The fatty alcohol can be commercial fatty alcohol.
The reaction temperature of the step 2 is 60-80 DEG C, when the addition of acrylic acid, initiator solution and chain-transferring agent solution
Between be 1-5h, after being added completely into, the reaction was continued 1-3h.
The step 3 is neutralized after being preferably cooled to 45-55 DEG C.
Compared to the polymer dispersant of traditional straight chain type structure, prevents returning gluing and after-tack type polymer, due on main chain
Alkyl phosphoric acid ester structure containing double bonds has been connected, so polymer is in the hyper-branched structure of heterocycle, has considerably increased dispersing agent
Adsorbent layer thickness, to significantly reduce the viscosity of slurry.Furthermore there is the alkyl of multiple carbon atoms in unsaturated alkyl phosphate,
So that polymer also has the function of certain elastic construction, so that calcium carbonate slurry 24 to 48 hours after grinding, it can continue to tie up
Hold and reduce the viscosity of slurry, thus reach prevent slurry from standing after occur after-tacking and return viscous situation and occur.Furthermore on polymer
Due to the reason of ethers group, there is a large amount of polar functional group, the charge density of polymer, stronger suction can be increased
It is attached to particle surface, enhances electrostatic repulsion effectively to improve dispersion performance.
Cost of material of the present invention is low, and reaction condition is mild, environmental-friendly without additional addition reaction dissolvent, fits
Preferably promote and apply.
Specific embodiment
The present invention is illustrated below by specific embodiment, but is not intended to limit the present invention.
Embodiment 1
It is passed through nitrogen 5min into three-necked flask, by 44g commercial fatty alcohol, enters round-bottomed flask, five oxygen of 14g is added in batches
Change two phosphorus, at 40 DEG C, magnetic agitation back flow reaction 4h's arrives alkyl phosphoric acid ester monomer；First in a kettle be added 90g go from
When stirring and being warming up to 70 DEG C, while 170g third is added dropwise in sub- water, 10g allyl alcohol polyethenoxy ether, 20g alkyl phosphoric acid ester monomer
Olefin(e) acid, the sodium persulfate aqueous solution that 50g mass fraction is 1%, the aqueous solution of sodium bisulfite that 50g mass fraction is 2% are added dropwise
Time controls between 3h；Rear isothermal reaction 1h is added dropwise；After heat preservation, 50 DEG C or so are cooled to, is neutralized with 275g liquid alkaline
To neutrality, dispersing agent product is finally obtained.
Embodiment 2
It is passed through nitrogen 5min into three-necked flask, by 44g commercial fatty alcohol, enters round-bottomed flask, five oxygen of 14g is added in batches
Change two phosphorus, at 50 DEG C, magnetic agitation back flow reaction 4h's arrives alkyl phosphoric acid ester monomer；First in a kettle be added 90g go from
When stirring and being warming up to 80 DEG C, while 170g third is added dropwise in sub- water, 10g allyl alcohol polyethenoxy ether, 20g alkyl phosphoric acid ester monomer
Olefin(e) acid, the persulfate aqueous solution that 50g mass fraction is 4%, the sodium metabisulfite solution that 50g mass fraction is 1%, when dropwise addition
Between control 2.5h between；Rear isothermal reaction 1h is added dropwise；After heat preservation, 50 DEG C or so are cooled to, is neutralized with 275g liquid alkaline
To neutrality, dispersing agent product is finally obtained.
Embodiment 3
It is passed through nitrogen 5min into three-necked flask, by 44g commercial fatty alcohol, enters round-bottomed flask, five oxygen of 14g is added in batches
Change two phosphorus, at 60 DEG C, magnetic agitation back flow reaction 4h's arrives alkyl phosphoric acid ester monomer；First in a kettle be added 90g go from
Sub- water, 10g methyl allyl polyoxyethylene ether, 20g alkyl phosphoric acid ester monomer are added dropwise simultaneously when stirring and being warming up to 80 DEG C
170g acrylic acid, the ammonium persulfate aqueous solution that 50g mass fraction is 3%, the sodium hydrogensulfite that 50g mass fraction is 1% are water-soluble
Liquid, time for adding control between 3h；Rear isothermal reaction 1h is added dropwise；After heat preservation, 50 DEG C or so are cooled to, with 275g liquid
Alkali neutralization finally obtains dispersing agent product to neutrality.
Application Example
It (will be disclosed according to patent CN201711416392.X according to dispersing agent made from Examples 1 to 3 and contrast sample
Method be worth) carried out in 98 grades of coarse whiting grounds using (dispersing agent solid content be 42%).
Be added a certain amount of water in 15L grinding pot, open stirring, the dispersing agent of calculation amount is added, after mixing evenly plus
Enter the powdered whiting powder of calculation amount, grinding discharges after 2 hours, carries out viscosity and particle size data detection, wherein dispersing agent is used
Amount and the ratio of other each components of grinding slurry are consistent.1h viscosity data, which is stood, after partial size and dispersion is shown in Table 1:
The physical index of calcium carbonate slurry after table 1 is ground
By result as can be seen that anti-after-tack of the present invention returns viscous type coarse whiting ground dispersant for coarse whiting ground, acquisition
Calcium carbonate slurry partial size is thin, and good fluidity, viscosity is low, can effectively prevent static rear the after-tacking for appearance of slurry and returns viscous phenomenon.
The above shows and describes the basic principle, main features and advantages of the invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The scope of protection of present invention by appended claims and
Its equivalent thereof.
Claims (10)
1. a kind of prevent after-tacking the preparation method for returning viscous type coarse whiting ground dispersant, which comprises the steps of:
Fatty alcohol and phosphorus pentoxide are sufficiently reacted under atmosphere of inert gases, obtain alkyl phosphoric acid ester monomer by step 1；
Step 2 mixes the alkyl phosphoric acid ester monomer with unsaturated polyether and water, is then slowly added to acrylic acid simultaneously, draws
Agent solution and chain-transferring agent solution are sent out, sufficiently reaction after adding；
Step 3 after fully reacting, is neutralized to neutrality with base reagent, obtains anti-after-tack and returns viscous type coarse whiting ground dispersant.
2. the method as described in claim 1, which is characterized in that the parts by weight of each component are as follows:
10-30 parts of alkyl phosphoric acid ester monomer,
20-30 parts of unsaturated polyether,
50-60 parts of acrylic acid.
3. the method as described in claim 1, which is characterized in that the fatty alcohol is in n-octyl alcohol, palmityl alcohol, laruyl alcohol
It is at least one.
4. the method as described in claim 1, which is characterized in that the unsaturated polyether is selected from allyl alcohol polyethenoxy ether, different
At least one of pentenol polyoxyethylene ether, methyl allyl polyoxyethylene ether.
5. the method as described in claim 1, which is characterized in that the initiator is selected from ammonium persulfate, sodium peroxydisulfate, persulfuric acid
At least one of potassium, hydrogen peroxide, additional amount are the 0.1-10wt% of acrylic monomers.
6. the method as described in claim 1, which is characterized in that the chain-transferring agent is selected from sodium hydrogensulfite, sodium sulfite, coke
At least one of sodium sulfite, additional amount are the 0.2-20wt% of acrylic monomers.
7. the method as described in claim 1, which is characterized in that the base reagent is in sodium hydroxide, potassium hydroxide, liquefied ammonia
At least one.
8. the method as described in claim 1, which is characterized in that the reaction temperature of step 1 is 40-60 DEG C, reaction time 1-
4h。
9. the method as described in claim 1, which is characterized in that the reaction temperature of step 2 is 60-80 DEG C, acrylic acid, initiation
The addition time of agent solution and chain-transferring agent solution is 1-5h, after being added completely into, the reaction was continued 1-3h.
10. anti-after-tack of any one of claim 1-9 the method preparation returns viscous type coarse whiting ground dispersant.
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