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SBR Latex (carboxylated styrene butadiene copolymer latex admixture)
modify asphalt
, improving its elasticity, durability, and resistance to cracking, weathering, and aging.SBR latex is used to, improving its elasticity, durability, and resistance to cracking, weathering, and aging.
SBR-2
SBR latex is often used as a binder in carpet backing, providing strength and stability to the carpet.
SBR-3 SBR latex is used inpaper coatings
to improve strength, water resistance, and printability. SBR-4x is used in the manufacturing of gloves, providing flexibility, durability, and chemical resistance.
SBR-5SBR latex is used as a binder for the backing of artificial turf, providing stability and durability.
Styrene-butadiene rubber (SBR) latex offers a range of features and benefits, making it a popular choice in various applications:
Versatility: SBR latex can be used in a wide range of applications, including adhesives, coatings, and carpet backing.
Durability: It provides excellent abrasion resistance, making it suitable for use in high-traffic areas.
Adhesion: SBR latex offers good adhesion to a variety of substrates, improving the overall performance of the final product.
Water Resistance: SBR latex exhibits good water resistance, making it suitable for use in applications where moisture is present.
Cost-Effective: SBR latex is generally more cost-effective compared to natural latex, offering similar performance characteristics.
Flexibility: It provides good flexibility, allowing the final product to bend and flex without cracking or breaking.
Stability: SBR latex offers excellent stability over a wide range of temperatures, making it suitable for use in various environments.
Chemical Resistance: It provides good resistance to many chemicals, enhancing the durability of the final product.
Contact us now for tailored solutions to meet your specific needs!
Environmental Friendliness: SBR latex is a synthetic material that can be manufactured with minimal environmental impact, making it a sustainable choice for many applications.At
Haoze
, we don't just manufacture and distribute standard adhesives; we also offer the ability to modify or create custom products to meet your specific needs. With over a hundred existing adhesive formulations in our arsenal, we strive to provide all customers with innovative, affordable, high-quality, and durable adhesive products that can work long-term to meet their unique requirements.Looking for customized SBR latex?Derived from two monomers&#;butadiene, sourced from petroleum, butane, or ethyl alcohol; and styrene, derived from petroleum or benzene&#;pressure-sensitive adhesive is widely used for bonding fibrous materials. SBR adhesives are valued for their strong bonding, stable properties, and quick, easy drying. As a premium supplier, we understand the importance of durable and cost-effective adhesive solutions for businesses. Our carefully bonded rubber products serve a variety of purposes and applications. We produce and distribute a range of standard rubber adhesive formulations, as well as customized SBR latex solutions for a wide range of consumers.Below is a listing of our most popular SBR latex (synthetic rubber) adhesives:
Technical field
The present invention relates to be used for the preparation method of the latex of paper coating, particularly relate to the preparation method of carboxylic styrene butadiene latex.
Technical background
Along with The development in society and economy, China's paper using amount per capita is used for greatly more, reaches per capita about 60 kilograms in .And, more and more higher to the specification of quality of paper.Surface coated is an important channel of improving paper quality.Along with the increase of top grade packing demand, White Board will be the trend of Future Development.
In the White Board production process, very high to the requirement of coating property, promptly will have good rheological property: under high shear condition, the viscosity of coating is low, just carry so easily, and energy consumption is low; After coated, dope viscosity is replied, but can not be too fast, and coating has certain flow leveling, makes coating surface smooth.And require to improve as much as possible the solid content of coating, will reduce the cost of oven dry like this.
Make coating reach above-mentioned requirement, the performance of latex is crucial.Latex will guarantee to have good cohesive strength, improves the White Board surface strength; When preparing the coating of high solids content, viscosity can not be too high, the requirement that symbol is carried; After the coating, have flow leveling preferably, improve the glossiness on White Board surface.
Carboxylic styrene butadiene latex is the present the widest latex of range of application on White Board is produced, but these latex major parts all are to be produced by foreign capital affiliate, as the LG of BASF, Korea S etc.The latex of domestic production, formerly application is less on the paper feeder, mainly is because cohesive strength and rheological property can not meet the demands.
Once proposed patent application as Japanese JSR Corp., the monomer component of forming with aliphatics conjugated diene monomer, ethylenic unsaturated carboxylic acid monomer and other vinyl monomers carries out letex polymerization and the copolymer emulsion that makes.Coating glossiness, surface strength is all better.But the weak point of this method is the polymerization system instability, easily produces blob of viscose in the polymerization process.
Chinese invention patent CN " water PVDC latex specially for painting special cloth and preparation method thereof " has announced by mix monomer by the emulsion polymerization way method that copolymerization forms in the presence of emulsifying agent, initiator.The mix monomer component comprises: vinylidene chloride, contain a kind of acrylic ester monomer and unsaturated fatty acids of acrylate soft monomer at least.This latex coating has water tolerance and thermotolerance preferably.But the rheological property of this latex is affected, and after the coating, the flow leveling of coating is relatively poor, the coated face unfairness.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes deficiency of the prior art, and a kind of preparation method of novel carboxyl styrene-butadiene latex is provided, and this carboxylic styrene butadiene latex has surface of good adhesive property and flow leveling, can be advantageously applied to the production of White Board.
The present invention is the technical solution problem, proposes to add certain wilkinite in the styrene-butadiene latex production process, common prepared in reaction carboxylic styrene butadiene latex.Wilkinite adds in the reactor with monomers such as divinyl, vinylbenzene, preparation latex.The wilkinite particulate is as the nuclear of latex, and divinyl, vinylbenzene form the carboxylic styrene butadiene latex of nucleocapsid structure at the wilkinite surface grafting polymerization.This carboxylic styrene butadiene latex has the structure of nucleocapsid, and the wilkinite particulate is between the styrene-butadiene latex chain, plays the effect of link.
The preparation method of the carboxylic styrene butadiene latex that the present invention proposes may further comprise the steps:
(1) 40&#;60 parts of divinyl, 40&#;60 parts of vinylbenzene, 10&#;20 parts of vinylformic acid are added to respectively in the different titration jars with 0.3&#;1.5 part of initiator;
(2) in reactor, add 100&#;150 parts of deionized waters, begin to stir and be retained to reaction and finish;
(3) add 1&#;10 part of wilkinite, 1&#;5 part of emulsifying agent and 1&#;5 part of linking agent, stir; In reactor, feed nitrogen, displace air;
(4) in reactor, be added dropwise to 15&#;25 parts of divinyl, 15&#;25 parts of vinylbenzene, 2&#;8 parts of vinylformic acid and 0.1&#;0.7 part of initiator earlier, reactor temperature be raised to 50&#;90 &#; then; Remaining divinyl, vinylbenzene, vinylformic acid, initiator are added dropwise in the reactor, the dropping time of residual reactant is controlled in 3&#;6h again, is incubated 1&#;3h down at 50&#;90 &#; then;
(5) react completely after, reduce temperature to room temperature, discharging;
Among the present invention, the ratio between each reactive material is the ratio of mass fraction.
Among the present invention, described wilkinite is at least a in sodium bentonite or the calcium-base bentonite.
If you are looking for more details, kindly visit carboxylated styrene butadiene latex.
Among the present invention, described initiator is at least a in ammonium persulphate, Diisopropyl azodicarboxylate, azo diisobutyl amidine hydrochloride, azo two isobutyl imidazoline salt hydrochlorates, azo dicyano valeric acid or the azo di-isopropyl tetrahydroglyoxaline.
Among the present invention, described emulsifying agent is at least a in alkyl-sulphate, alkylphenol polyoxyethylene, sorbitan fatty acid ester or the polyoxyethylene sorbitan fatty acid ester.
Among the present invention, described linking agent is a tert-dodecyl mercaptan.
Beneficial effect of the present invention is:
On the one hand, the wilkinite link increases the bonding strength between the styrene-butadiene latex, has improved the adhesive property of latex; On the other hand, wilkinite has water-swelling preferably, and under static state, wilkinite suction profit rises, and has improved the viscosity of coating, has promptly improved the stability of coating.And under the high-shear of coating process,, the viscosity of coating is reduced because the wilkinite profit is very lubricated after rising, be convenient to the conveying and the coating of coating.Therefore, the rheological property of this coating is very good.This all is because the link effect that wilkinite plays.
Embodiment
Embodiment 1
60 parts divinyl, 40 parts vinylbenzene, 10 parts vinylformic acid, 0.3 part ammonium persulphate are added to respectively in the titration jar.
In 2 cubical reactors, add 100 parts deionized water, start and stir and be retained to the reaction end.
The calcium-base bentonite that adds 10 parts.Add 1 part alkyl-sulphate, 2 parts of alkylphenol polyoxyethylene, 1 part of tert-dodecyl mercaptan stirs.Feed nitrogen, displace air.
Be added dropwise to 25 parts of divinyl, 15 parts vinylbenzene, 2 parts vinylformic acid, 0.1 part ammonium persulphate in reactor.
Temperature is raised to 50 &#;.
Dropwise 35 part divinyl slowly, 25 parts vinylbenzene, 8 parts vinylformic acid, 0.2 part ammonium persulphate drip in 3h again.
Be incubated 1h down at 50 &#;.
After reacting completely, reduce the temperature to room temperature, discharging.
Embodiment 2
50 parts divinyl, 50 parts vinylbenzene, 20 parts vinylformic acid, 0.5 part azo diisobutyl amidine hydrochloride are added to respectively in the titration jar.
In 2 cubical reactors, add 120 parts deionized water, begin to stir and be retained to reaction and finish; The calcium-base bentonite that adds 4 parts adds 0.5 part alkyl-sulphate, 0.5 part of alkylphenol polyoxyethylene, and 5 parts of tert-dodecyl mercaptans stir.Feed nitrogen, displace air.
Be added dropwise to 15 parts of divinyl, 25 parts vinylbenzene, 5 parts vinylformic acid, 0.2 part azo diisobutyl amidine hydrochloride in reactor.
Temperature is raised to 56 &#;.
Dropwise 35 part divinyl slowly, 25 parts vinylbenzene, 15 parts vinylformic acid, 0.3 part azo diisobutyl amidine hydrochloride drip in 4h again.
Be incubated 3h down at 70 &#;.
After reacting completely, reduce the temperature to room temperature, discharging.
Embodiment 3
40 parts divinyl, 60 parts vinylbenzene, 15 parts vinylformic acid, 1.5 parts azo diisobutyl amidine hydrochloride are added to respectively in the titration jar.
In 2 cubical reactors, the deionized water that adds 150 parts begins stirring and is retained to reaction to finish; The calcium-base bentonite that adds 1 part.Add 4 parts alkyl-sulphate, 1 part of alkylphenol polyoxyethylene, 3 parts of tert-dodecyl mercaptans stir.Feed nitrogen, displace air.
Be added dropwise to 15 parts of divinyl, 25 parts vinylbenzene, 8 parts vinylformic acid, 0.7 part azo diisobutyl amidine hydrochloride in reactor.
Temperature is raised to 90 &#;.
25 parts of divinyl of dropping slowly, 35 parts vinylbenzene, 7 parts vinylformic acid, 0.8 part azo diisobutyl amidine hydrochloride drip in 2h again.
Be incubated 3h down at 90 &#;.
After reacting completely, reduce the temperature to room temperature, discharging.
Embodiment 4
40 parts divinyl, 60 parts vinylbenzene, 15 parts vinylformic acid, 1.5 parts Diisopropyl azodicarboxylate are added to respectively in the titration jar.
In 2 cubical reactors, add 120 parts deionized water, begin to stir and be retained to reaction and finish; The calcium-base bentonite that adds 5 parts.Add 2 parts alkyl-sulphate, 2 parts of alkylphenol polyoxyethylene, 4 parts of tert-dodecyl mercaptans stir.Feed nitrogen, displace air.
Be added dropwise to 20 parts of divinyl, 25 parts vinylbenzene, 8 parts vinylformic acid, 0.7 part Diisopropyl azodicarboxylate in reactor.
Temperature is raised to 80 &#;.
20 parts of divinyl of dropping slowly, 35 parts vinylbenzene, 7 parts vinylformic acid, 0.8 part azo diisobutyl amidine hydrochloride drip in 3h again.
Be incubated 3h down at 80 &#;.
After reacting completely, reduce the temperature to room temperature, discharging.
Embodiment 5
50 parts divinyl, 50 parts vinylbenzene, 10 parts vinylformic acid, 1.0 parts azo two isobutyl imidazoline salt hydrochlorates are added to respectively in the titration jar.
In 2 cubical reactors, add 120 parts deionized water, begin to stir and be retained to reaction and finish; The sodium bentonite that adds 8 parts.Add 2 parts alkyl-sulphate, 2 parts of alkylphenol polyoxyethylene, 2 parts of tert-dodecyl mercaptans stir.Feed nitrogen, displace air.
Be added dropwise to 20 parts of divinyl, 25 parts vinylbenzene, 5 parts vinylformic acid, 0.4 part azo two isobutyl imidazoline salt hydrochlorates in reactor.
Temperature is raised to 90 &#;.
30 parts of divinyl of dropping slowly, 25 parts vinylbenzene, 5 parts vinylformic acid, 0.6 part azo diisobutyl amidine hydrochloride drip in 4h again.
Be incubated 3h down at 90 &#;.
After reacting completely, reduce the temperature to room temperature, discharging.
Application example of the present invention:
Carboxylic styrene butadiene latex of the present invention is used for the preparation of White Board production process coating, and the typical application prescription is as follows:
This application of paints is in the production of white board, and the surface property of white board is as follows:
Performance Unit Numerical value 1 The PPS value is positive μm 1.0 2 The smoothness front s 550 3 The brightness front &#; 92 4 L* 95 5 a* 1.0 6 b* -3.0 7 The glossiness front &#; 62 8 Print gloss just &#; 98 9 The degree of sizing front g/m 2 39 10 The lather quickness front m/s 2.2This white board quality reaches the standard of A level.
It should be noted that the present invention can summarize with other the specific form without prejudice to spirit of the present invention and principal character.Therefore, no matter from which point, above-mentioned experimental program of the present invention all can only be thought can not limit the present invention to explanation of the present invention, claim has been pointed out scope of the present invention, and scope of the present invention is not pointed out in above-mentioned explanation, therefore, in implication suitable and any variation in the scope, all should think to be included in the scope of claims with claims of the present invention.
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