CN102786620A - Small-particle-size carboxylic styrene-butadiene latex and its preparation method - Google Patents
Small-particle-size carboxylic styrene-butadiene latex and its preparation method Download PDFInfo
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- 239000004816 latex Substances 0.000 title claims abstract description 110
- 229920000126 latex Polymers 0.000 title claims abstract description 110
- 239000002174 Styrene-butadiene Substances 0.000 title claims abstract description 67
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 239000011115 styrene butadiene Substances 0.000 title claims abstract description 67
- 229920003048 styrene butadiene rubber Polymers 0.000 title claims abstract description 67
- 238000002360 preparation method Methods 0.000 title claims abstract description 54
- 239000002245 particle Substances 0.000 claims abstract description 51
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 31
- 239000003999 initiator Substances 0.000 claims abstract description 19
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000178 monomer Substances 0.000 claims abstract description 17
- 239000008234 soft water Substances 0.000 claims abstract description 17
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 150000001875 compounds Chemical class 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 16
- -1 required ionogen Substances 0.000 claims description 16
- 238000006116 polymerization reaction Methods 0.000 claims description 14
- 239000003153 chemical reaction reagent Substances 0.000 claims description 13
- 239000006174 pH buffer Substances 0.000 claims description 13
- 239000003352 sequestering agent Substances 0.000 claims description 13
- 229910052708 sodium Inorganic materials 0.000 claims description 12
- 239000011734 sodium Substances 0.000 claims description 12
- 239000012874 anionic emulsifier Substances 0.000 claims description 8
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 6
- LVHBHZANLOWSRM-UHFFFAOYSA-N itaconic acid Chemical compound OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 claims description 6
- 230000009466 transformation Effects 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 6
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Natural products C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 229940077388 benzenesulfonate Drugs 0.000 claims description 3
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 3
- 238000007720 emulsion polymerization reaction Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000002194 synthesizing effect Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract 2
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- 238000010438 heat treatment Methods 0.000 abstract 1
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- 239000006185 dispersion Substances 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 125000002877 alkyl aryl group Chemical group 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
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- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
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- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
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Abstract
The invention belongs to the technical field of seed emulsion polymerization, relates to a preparation of a high polymer material, and especially relates to a small-particle-size carboxylic styrene-butadiene latex and its preparation method. Technical problems comprising unadjustable particle size, bad mechanical stability, bad chemical stability and the like of latexes in the prior art are solved in the invention. The preparation method which adopts a seed emulsion polymerization technology and adopts butadiene and styrene as monomers comprises the following steps: adding soft water, a seed latex, an electrolyte, a chelating agent and a pH buffering agent; heating; adding functional monomers, unsaturated carboxylic acid, a molecular weight adjustment agent, a composite emulsifier and an initiator; degassing when the conversion rate reaches above 98%; cooling; and synthesizing the carboxylic styrene-butadiene latex. Compared with the prior art, the preparation method of the small-particle-size carboxylic styrene-butadiene latex has the advantages of realization of the adjustment of the particle size of the latex, and simple operation; and compared with present carboxylic styrene-butadiene latexes, the carboxylic styrene-butadiene latex prepared in the invention has the advantages of narrow monodispersion, good fluidity, excellent mechanical stability and excellent chemical stability.
Description
Technical field
The invention belongs to the seeded emulsion polymerization technical field, relate to the preparation of macromolecular material, especially relate to a kind of small particle size carboxylic styrene butadiene latex and preparation method thereof.
Background technology
Letex polymerization is with water as solvent, under the effect of emulsifying agent and by means of mechanical stirring, makes monomer in water, be dispersed into milk sap, the polyreaction of being undertaken by the initiator initiation.Along with the development of emulsion polymerization technology, the purposes of synthetic latex is also constantly expanded in recent years, carboxylic styrene butadiene latex especially, and its purposes comprises the paper coating, carpet back coating, fabric coating, the footwear material is bonding etc.Along with the development of paper industry, the paper surface covered is more and more faster, and preparation coating solid content is also increasingly high, therefore styrene-butadiene latex is had higher requirement, and requires latex to have good flowability and mechanical stability, superior bond strengths rendering.For many years, countries in the world in the hope of improving the some shortcomings of currently available products, are realized the multifunction of latex all in the research of carrying out aspect the raising of synthetic latex performance.
In order to solve the problem that prior art exists, people have carried out long-term exploration, have proposed solution miscellaneous.For example; The Chinese patent document discloses a kind of technology of preparing [application number: 200510082910.X] of novel carboxylic styrene butadiene latex; With aliphatics conjugated diene, aromatic ethenyl compound is main monomer, and the vinyl unsaturated carboxylic acid, vinyl esters of unsaturated carboxylic acids, vinyl unsaturated carboxylic acid acid amides and the vinyl unsaturated nitrile monomer that add C3-C5 carry out modification; Emulsifying agent comprises anionic emulsifier and alkylaryl polyethenoxy ether class nonionic emulsifying agents such as alkyl atmosphere polyoxyethylene ether sulfate, and anionic emulsifier is selected not a kind of in alkylaryl polyoxyethylene ether sulfate or the alkyl diphenyl ether disulfonate at least for use; Persulphate is an initiator, and the alkyl sulfide alcohols is a molecular weight regulator, adopts required ionogen, sequestrant, pH buffer reagent in the letex polymerization.
Such scheme has improved prior art to a certain extent, and is high through utilizing batch charging mode synthetic surface tension force, the novel carboxylic styrene butadiene latex that particle diameter is little.Yet this scheme synthetic latex particle size size can not be regulated, and makes latex particle size distribute and concentrates, and influences latex good flowability, mechanical stability and chemicalstability.
Summary of the invention
The objective of the invention is provides a kind of operation simple to the problems referred to above, use easy to operate, the small particle size method for preparing carboxylic styrene butadiene latex of the size of adjustable latex.
Another object of the present invention provides a kind of small particle size carboxylic styrene butadiene latex that adopts above-mentioned preparation method to make.
For achieving the above object, the present invention has adopted following technical proposal: first conception of the present invention is to provide a kind of small particle size method for preparing carboxylic styrene butadiene latex, and this preparation method comprises the steps:
Material component of A, seed latex and preparation method thereof:
1. the seed latex comprises the following materials based on weight component:
Soft water: 250-350 part, divinyl: 10-30 part, vinylbenzene: 70-90 part, compound emulsifying agent: 10-15 part, initiator: 0.2-1.2 part, molecular weight regulator: ionogen, sequestrant and pH buffer reagent that 0.1-0.6 part and letex polymerization are required;
2. the preparation method of seed latex:
Polymeric kettle vacuumizes the back and successively drops into above-mentioned soft water, compound emulsifying agent, molecular weight regulator, pH buffer reagent, divinyl, vinylbenzene and letex polymerization required ionogen and sequestrant; After being warming up to 40-60 ℃; Add initiator, reacted 10-15 hour, react reach more than 98% to transformation efficiency after; Cool to below 30 ℃, synthesize seed latex;
Material component of B, carboxylic styrene butadiene latex and preparation method thereof:
1. carboxylic styrene butadiene latex comprises the following materials based on weight component:
Soft water: 100-120 part, seed latex: 10-15 part, divinyl: 30-80 part, vinylbenzene: 20-70 part, unsaturated carboxylic acid: 1-5 part, function monomer: 2-6 part, compound emulsifying agent: 1-4 part, initiator: 0.3-1.5 part, molecular weight regulator: ionogen, sequestrant and pH buffer reagent that 0.1-0.6 part and letex polymerization are required;
2. the preparation method of carboxylic styrene butadiene latex:
Polymeric kettle vacuumizes the back and successively adds above-mentioned soft water, seed latex, required ionogen, sequestrant and the pH buffer reagent of letex polymerization, be warming up to 75 ℃ after, drip divinyl, vinylbenzene, function monomer, unsaturated carboxylic acid, molecular weight regulator, compound emulsifying agent and initiator simultaneously; The dropping time was controlled at 2-3 hour; Temperature is controlled at 75-95 ℃, and insulation reaction 3-5 hour, when transformation efficiency reaches more than 98%; Processing outgases; Regulate latex pH value between the 7-8 with alkali lye, cool to below 30 ℃, synthetic carboxylic styrene butadiene latex.
In the preparation method of above-mentioned small particle size carboxylic styrene butadiene latex, described unsaturated carboxylic acid comprises any one or the multiple combination in vinylformic acid, methylacrylic acid, the methylene-succinic acid.
In the preparation method of above-mentioned small particle size carboxylic styrene butadiene latex, described function monomer comprises vinyl cyanide and acrylic amide.
In the preparation method of above-mentioned small particle size carboxylic styrene butadiene latex, described compound emulsifying agent is the combination of any one or two kinds in anionic emulsifier and the nonionic emulsifying agent.
In the preparation method of above-mentioned small particle size carboxylic styrene butadiene latex, described anionic emulsifier comprises any one or the multiple combination in sodium alkyl sulfate, alkyl sodium sulfonate, sodium alkyl benzene sulfonate and the alkyl diphenyl ether disulphonic acid sodium.
In the preparation method of above-mentioned small particle size carboxylic styrene butadiene latex, described nonionic emulsifying agent comprises that the oxyethane adduct number is any one or the multiple combination in the 5-40 TX10.
In the preparation method of above-mentioned small particle size carboxylic styrene butadiene latex, described molecular weight regulator is an alkyl sulfhydryl.
In the preparation method of above-mentioned small particle size carboxylic styrene butadiene latex, described alkyl sulfhydryl is a lauryl mercaptan.
Second conception of the present invention is to provide a kind of small particle size carboxylic styrene butadiene latex, and this small particle size carboxylic styrene butadiene latex adopts above-mentioned preparation method to make, and the size of described small particle size carboxylic styrene butadiene latex is 80-100nm.
Compared with prior art, this small particle size method for preparing carboxylic styrene butadiene latex, operation is simple, use easy to operate, the size of adjustable latex; The advantage of the small particle size carboxylic styrene butadiene latex that employing the present invention prepares is: size distribution is very narrow single the dispersion, and good fluidity has good mechanical stability and chemicalstability, and cohesive strength is high.
Description of drawings
Fig. 1 is the Electronic Speculum figure of embodiment 1 product.
Fig. 2 is the Electronic Speculum figure of Comparative Examples 1 product.
Embodiment
Embodiment 1:
Material component of A, seed latex and preparation method thereof:
1. the seed latex comprises the following materials based on weight component:
Soft water: 250-350 part, divinyl: 10-30 part, vinylbenzene: 70-90 part, compound emulsifying agent: 10-15 part, initiator: 0.2-1.2 part, molecular weight regulator: ionogen, sequestrant and pH buffer reagent that 0.1-0.6 part and letex polymerization are required;
2. the preparation method of seed latex:
Polymeric kettle vacuumizes the back and successively drops into above-mentioned soft water, compound emulsifying agent, molecular weight regulator, pH buffer reagent, divinyl, vinylbenzene and letex polymerization required ionogen and sequestrant; After being warming up to 40-60 ℃; Add initiator, reacted 10-15 hour, react reach more than 98% to transformation efficiency after; Cool to below 30 ℃ synthetic seed latex;
Material component of B, carboxylic styrene butadiene latex and preparation method thereof:
1. carboxylic styrene butadiene latex comprises the following materials based on weight component:
Soft water: 100-120 part, seed latex: 10-15 part, divinyl: 30-80 part, vinylbenzene: 20-70 part, unsaturated carboxylic acid: 1-5 part, function monomer: 2-6 part, compound emulsifying agent: 1-4 part, initiator: 0.3-1.5 part, molecular weight regulator: ionogen, sequestrant and pH buffer reagent that 0.1-0.6 part and letex polymerization are required;
2. the preparation method of carboxylic styrene butadiene latex:
Polymeric kettle vacuumizes the back and successively adds above-mentioned soft water, seed latex, required ionogen, sequestrant and the pH buffer reagent of letex polymerization, be warming up to 75 ℃ after, drip divinyl, vinylbenzene, function monomer, unsaturated carboxylic acid, molecular weight regulator, compound emulsifying agent and initiator simultaneously; The dropping time was controlled at 2-3 hour; Temperature is controlled at 75-95 ℃, and insulation reaction 3-5 hour, when transformation efficiency reaches more than 98%; Processing outgases; Regulate latex pH value between the 7-8 with alkali lye, cool to below 30 ℃, synthetic carboxylic styrene butadiene latex.
In the foregoing description 1, described molecular weight regulator is an alkyl sulfhydryl, and described alkyl sulfhydryl comprises lauryl mercaptan; Compound emulsifying agent is the combination of any one or two kinds in anionic emulsifier and the nonionic emulsifying agent; Described anionic emulsifier comprises any one or the multiple combination in sodium alkyl sulfate, alkyl sodium sulfonate, sodium alkyl benzene sulfonate and the alkyl diphenyl ether disulphonic acid sodium, and described nonionic emulsifying agent comprises that the oxyethane adduct number is any one or the multiple combination in the 5-40 TX10; Unsaturated carboxylic acid comprises any one or the multiple combination in vinylformic acid, methylacrylic acid, the methylene-succinic acid; Function monomer comprises vinyl cyanide and acrylic amide.
The small particle size carboxylic styrene butadiene latex that adopts above-mentioned preparation method to make, its particle diameter are 80-100nm.
As one of technical scheme of optimizing the most, in present embodiment 1, soft water is 280kg in the preparation of seed latex, and molecular weight regulator is 10kg; Compound emulsifying agent is 12kg, and divinyl is 10kg, and vinylbenzene is 90kg; Initiator is 0.5kg, and temperature of reaction is 52 ℃, and the reaction times is 12 hours; Soft water is 110kg in the preparation of carboxylic styrene butadiene latex, and seed latex is 13kg, and divinyl is 45kg; Vinylbenzene is 55kg, and unsaturated carboxylic acid is 3kg, and function monomer is 4kg; Compound emulsifying agent is 3kg, and initiator is 0.8kg, and molecular weight regulator is 0.5kg; The dropping time is 3.5 hours, and temperature of reaction is 80 ℃, and insulation reaction is 3 hours.
Embodiment 2:
Material component of seed latex and carboxylic styrene butadiene latex and preparation method thereof all with the foregoing description 1 roughly the same, this paper does not give unnecessary details.
In the foregoing description 2, described molecular weight regulator, compound emulsifying agent, unsaturated carboxylic acid, function monomer all with embodiment 1 roughly the same, this paper does not give unnecessary details.
The small particle size carboxylic styrene butadiene latex that adopts above-mentioned preparation method to make, its particle diameter are 80-100nm.
As one of technical scheme of optimizing the most, in present embodiment 2, soft water is 310kg in the preparation of seed latex, and compound emulsifying agent is 11kg, and divinyl is 15kg, and vinylbenzene is 85kg, and initiator is 0.4kg, and temperature of reaction is 48 ℃, and the reaction times is 14 hours; The preparation seed latex of carboxylic styrene butadiene latex is chosen 12kg, and the dropping time is 3 hours, all the other consumptions all with embodiment 1 roughly the same, this paper does not give unnecessary details.
Embodiment 3:
Material component of seed latex and carboxylic styrene butadiene latex and preparation method thereof all with the foregoing description 1 or 2 roughly the same, this paper does not give unnecessary details.
In the foregoing description 3, described molecular weight regulator, compound emulsifying agent, unsaturated carboxylic acid, function monomer all with embodiment 1 or 2 roughly the same, this paper does not give unnecessary details.
The small particle size carboxylic styrene butadiene latex that adopts above-mentioned preparation method to make, its particle diameter are 80-100nm.
As one of technical scheme of optimizing the most, in present embodiment 3, soft water is 330kg in the preparation of seed latex, and compound emulsifying agent is 13kg, and divinyl is 22kg, and vinylbenzene is 78kg, and initiator is 0.7kg, and temperature of reaction is 55 ℃, and the reaction times is 11 hours; Seed latex is chosen for 10kg in the preparation of carboxylic styrene butadiene latex, and the dropping time is 2.5 hours, all the other consumptions all with embodiment 1 or 2 roughly the same, this paper does not give unnecessary details.
In order to compare the performance of the prepared small particle size carboxylic styrene butadiene latex of the inventive method, be described further below in conjunction with Comparative Examples 1.
Adopt the preparation method of embodiment 1, do not add seed latex and make an experiment, consumption is constant; Other conditions are also constant, and institute's synthetic carboxylic styrene butadiene latex performance descends to some extent, and surface tension is on the low side; Particle diameter is bigger; Exceeded 80-100nm, chemicalstability and mechanical stability are also all relatively poor, can't satisfy the requirement of coating paper coating preparation.
Product carboxylic styrene butadiene latex to embodiment 1 and Comparative Examples 1 carries out the Electronic Speculum test, and the Electronic Speculum result of embodiment 1 sees Fig. 1, and the Electronic Speculum result of Comparative Examples 1 sees Fig. 2, from Fig. 1 and Fig. 2, can get, and the particle size dispersion of Fig. 1 is very narrow single dispersion, good fluidity.
Can know that from embodiment 1-3 the size of carboxylic styrene butadiene latex can realize the accurate control of final latex particle size through the add-on of regulating seed latex, promptly along with the increase of seed latex amount, the particle diameter of its carboxylic styrene butadiene latex reduces.
The testing method accepted standard of small particle size carboxylic styrene butadiene latex is following:
Total solid content: SH/T1154-92
Viscosity: SH/T1152-92
PH value: SH/T1150-92
Surface tension: SH/T1156-92
Mechanical stability: SH/T1151-92
Chemicalstability: SH/T1608-95
Particle diameter: AUTOSIZER IIC particle diameter appearance
For the raw material consumption of more clearly expressing 3 embodiment and 1 Comparative Examples and the product performance that obtained, list with tabulated form below.
The synthesizing formula of table 1 small particle size carboxylic styrene butadiene latex
The performance index of table 2 small particle size carboxylic styrene butadiene latex
Specific embodiment described herein only is that the present invention's spirit is illustrated.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (10)
1. the preparation method of a small particle size carboxylic styrene butadiene latex is characterized in that, this preparation method comprises the steps:
Material component of A, seed latex and preparation method thereof:
1. the seed latex comprises the following materials based on weight component:
Soft water: 250-350 part, divinyl: 10-30 part, vinylbenzene: 70-90 part, compound emulsifying agent: 10-15 part, initiator: 0.2-1.2 part, molecular weight regulator: ionogen, sequestrant and pH buffer reagent that 0.1-0.6 part and letex polymerization are required;
2. the preparation method of seed latex:
Polymeric kettle vacuumizes the back and successively drops into above-mentioned soft water, compound emulsifying agent, molecular weight regulator, pH buffer reagent, divinyl, vinylbenzene and letex polymerization required ionogen and sequestrant; After being warming up to 40-60 ℃; Add initiator, reacted 10-15 hour, react reach more than 98% to transformation efficiency after; Cool to below 30 ℃, synthesize seed latex;
Material component of B, carboxylic styrene butadiene latex and preparation method thereof:
1. carboxylic styrene butadiene latex comprises the following materials based on weight component:
Soft water: 100-120 part, seed latex: 10-15 part, divinyl: 30-80 part, vinylbenzene: 20-70 part, unsaturated carboxylic acid: 1-5 part, function monomer: 2-6 part, compound emulsifying agent: 1-4 part, initiator: 0.3-1.5 part, molecular weight regulator: ionogen, sequestrant and pH buffer reagent that 0.1-0.6 part and letex polymerization are required;
2. the preparation method of carboxylic styrene butadiene latex:
Polymeric kettle vacuumizes the back and successively adds above-mentioned soft water, seed latex, required ionogen, sequestrant and the pH buffer reagent of letex polymerization, be warming up to 75 ℃ after, drip divinyl, vinylbenzene, function monomer, unsaturated carboxylic acid, molecular weight regulator, compound emulsifying agent and initiator simultaneously; The dropping time was controlled at 2-3 hour; Temperature is controlled at 75-95 ℃, and insulation reaction 3-5 hour, when transformation efficiency reaches more than 98%; Processing outgases; Regulate latex pH value between the 7-8 with alkali lye, cool to below 30 ℃, synthetic carboxylic styrene butadiene latex.
2. the preparation method of small particle size carboxylic styrene butadiene latex according to claim 1 is characterized in that, described unsaturated carboxylic acid comprises any one or the multiple combination in vinylformic acid, methylacrylic acid, the methylene-succinic acid.
3. the preparation method of small particle size carboxylic styrene butadiene latex according to claim 1 is characterized in that, described function monomer comprises vinyl cyanide and acrylic amide.
4. the preparation method of small particle size carboxylic styrene butadiene latex according to claim 1 is characterized in that, described compound emulsifying agent is the combination of any one or two kinds in anionic emulsifier and the nonionic emulsifying agent.
5. the preparation method of small particle size carboxylic styrene butadiene latex according to claim 4; It is characterized in that described anionic emulsifier comprises any one or the multiple combination in sodium alkyl sulfate, alkyl sodium sulfonate, sodium alkyl benzene sulfonate and the alkyl diphenyl ether disulphonic acid sodium.
6. the preparation method of small particle size carboxylic styrene butadiene latex according to claim 4 is characterized in that, described nonionic emulsifying agent comprises that the oxyethane adduct number is any one or the multiple combination in the 5-40 TX10.
7. according to the preparation method of any described small particle size carboxylic styrene butadiene latex among the claim 1-6, it is characterized in that described molecular weight regulator is an alkyl sulfhydryl.
8. the preparation method of small particle size carboxylic styrene butadiene latex according to claim 7 is characterized in that, described alkyl sulfhydryl is a lauryl mercaptan.
9. the small particle size carboxylic styrene butadiene latex that makes according to the preparation method of the described small particle size carboxylic styrene butadiene latex of claim 1-8.
10. small particle size carboxylic styrene butadiene latex according to claim 9 is characterized in that, the particle diameter of described small particle size carboxylic styrene butadiene latex is 80-100nm.
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Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN110407983A (en) * | 2018-04-26 | 2019-11-05 | 中国石油化工股份有限公司 | Carboxylic styrene butadiene latex and its preparation method and application |
| CN110416547A (en) * | 2018-04-26 | 2019-11-05 | 中国石油化工股份有限公司 | Paste compound and preparation method thereof and battery cathode and lithium ion battery |
| CN113512147A (en) * | 2021-06-29 | 2021-10-19 | 江西岳峰集团环保新材有限公司 | Preparation method of high-performance carboxylic styrene-butadiene latex |
| CN115304711A (en) * | 2021-05-08 | 2022-11-08 | 中国石油天然气股份有限公司 | Modified emulsion polymerized styrene-butadiene rubber latex, modified emulsion polymerized styrene-butadiene rubber and preparation method of modified emulsion polymerized styrene-butadiene rubber latex and modified emulsion polymerized styrene-butadiene rubber |
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| CN103159885A (en) * | 2011-12-09 | 2013-06-19 | 锦湖石油化学株式会社 | Styrene-butadiene latex for coating paper and its preparing method |
| CN104211858A (en) * | 2014-09-17 | 2014-12-17 | 珠海金鸡化工有限公司 | Carboxylic butadiene-styrene latex and preparation method thereof |
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| CN104231173B (en) * | 2014-09-17 | 2018-08-14 | 珠海金鸡化工有限公司 | carboxylic styrene butadiene latex preparation system and preparation method thereof |
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