Abstract: An active energy ray-curable inkjet ink composition, except a certain photocurable inkjet printing ink composition, satisfies: (A) a polyfunctional amine-modified oligomer is contained by to 14.0% by mass; (B) monofunctional monomers are contained by 50.0% by mass or more; (C) a monofunctional monomer with a glass transition temperature of 20° C. or higher is contained by 30.0% by mass or more; (D) a monofunctional monomer with a glass transition temperature of or lower is contained by 20.0% by mass or more; (E) a polyfunctional monomer with a glass transition temperature of 10° C. or lower is contained by 3.0 to 12.0% by mass; and (F) a nitrogen-containing monofunctional monomer is contained by 30.0 to 50.0% by mass.

Abstract: Provided are an ink jet ink for electron beam curing, an ink set, and an image recording method. The ink jet ink contains a polymerization initiator (A) and a polymerizable compound (B). The polymerization initiator (A) includes a hydrogen abstraction type polymerization initiator having a molecular weight of 500 or more, and the content of the polymerization initiator (A) is more than 0 mass % and 2 mass % or less relative to the total amount of the ink jet ink for electron beam curing.

Abstract: An inkjet ink, including (A) a resin, which is (A1) a terpene resin or (A2) a terpene phenol resin, (B) a solvent system including (B1) a volatile organic solvent having a boiling point of less than 100° C., and (C) silver nanoparticles. A printed article, including a substrate, and an opaque film disposed on the substrate. The opaque film is formed from the inkjet ink.

Abstract: An aqueous additive solution for an ink composition, containing a compound represented by general formula (A) as defined herein; a compound represented by general formula (II) as defined herein; and water, an aqueous colorant solution for an ink composition, containing a compound represented by general formula (A) as defined herein; a compound represented by general formula (II) as defined herein; water; and a colorant, and an ink composition containing a compound represented by general formula (A) as defined herein; a compound represented by general formula (II) as defined herein.

Abstract: Disclosed is an ink set for textile printing including: a pretreatment liquid that contains a polyvalent metal salt, a water-soluble organic solvent, and a surfactant; a white inkjet ink that contains a white pigment, resin particles, and a water-soluble organic solvent; and a non-white inkjet ink that contains a non-white pigment, resin particles, a water-soluble organic solvent, and a surfactant. Also disclosed is a method for producing a printed textile item.

Abstract: The present invention provides a UV-Vis radiation curable security ink for producing a security feature for securing value documents, wherein said security feature exhibits a blue color upon viewing in transmitted light and a metallic yellow color upon viewing in incident light. The UV-Vis radiation curable security ink comprises a cationically curable or a hybrid curable ink vehicle, and silver nanoplatelets bearing a surface stabilizing agent of general formula (I) wherein the residue RA is a C2-C4alkyl group substituted with a hydroxy group; the residue RB is selected from a C1-C4alkyl group, and a C2-C4alkyl group substituted with a hydroxy group; and Cat+ is an ammonium cation of general formula +NH2RCRD, wherein the residue RC is a C2-C4alkyl group substituted with a hydroxy group; and the residue RD is selected from a C1-C4alkyl group, and a C2-C4alkyl group substituted with a hydroxy group.

Abstract: A photosensitive resin composition, a cured product and a manufacturing method thereof, a light conversion layer and a light emitting device are provided. The photosensitive resin composition includes a resin (A), an ethylenically unsaturated monomer (B), a photopolymerization initiator (C), a pigment (D) and a solvent (E). The resin (A) includes an alkali-soluble resin (A-1), other resin (A-2) or the combination thereof. The alkali-soluble resin (A-1) includes a structural unit represented by the following formula (A1). The photopolymerization initiator (C) includes a compound represented by the following formula (C1). In formula (A1) and formula (C1), the definition of each substituent is the same as that in the detailed description.

Abstract: A plastisol formulation configured for use in coating substrates and a method for applying the formulation. The inventive formulation has exceptional flexibility over a wide range of temperatures. It is comprised of polyvinyl chloride, a plasticizer, a stabilizer, preferably a pigment, and a UV inhibitor/light stabilizer. The formulation is applied to a substrate and then cured by exposing it to an elevated temperature.

Abstract: An example nanoimprint lithography (NIL) resin composition includes a total of three monomers, wherein two of the three monomers are selected from the group consisting of two different epoxy substituted silsesquioxane monomers; two different epoxy substituted cyclosiloxane monomers; and two different non-organosilicon epoxy monomers. A third of the three monomers is a fluorinated monomer that is present in an amount ranging from about from 0.5 mass % to about 4 mass %, based on a total solids content of the NIL resin composition. The NIL resin also includes a photoinitiator and a solvent.

Abstract: This invention provides a coating composition that contains an aromatic adhesion promoter. Containers and other articles comprising the coatings and methods of making such containers and other articles are also provided. The invention further provides compositions including the adhesion promoter, which have utility in a variety of coating end uses, including, for example, valve and pipe coatings.

Abstract: Stretchable, multilayer films are disclosed that include a thermoplastic polyurethane substrate and a thermoset coating, applied to the thermoplastic polyurethane substrate. The thermoset coating may comprise the reaction product of: an oligomeric polyester resin comprising the reaction product of: diols or polyols comprising from about 30 to about 99 mol % trimethylolpropane and from about 1 mol % to about 70 mol % neopentyl glycol, in each case based on the total molar amount of diols and polyols reacted, and dicarboxylic acids or polycarboxylic acids comprising from about 1 mol % to about 70 mol % of one or more cyclic or acyclic aliphatic acids having from 2 to 12 carbons, based on the total molar amount of dicarboxylic acids and polycarboxylic acids reacted.

Abstract: A coating composition includes (a) a melamine resin having imino and methylol functional groups that together include 30 mole % or greater of the total functionality of the melamine resin; and (b) at least one polymer reactive with (a) that is obtained from components including polytetrahydrofuran and a carboxylic acid or anhydride thereof. The polytetrahydrofuran includes greater than 20 weight % of the components that form the polymer (b) and the carboxylic acid or anhydride thereof includes greater than 13 weight % of the components that form the polymer (b). The polymer (b) has an acid value ranging from 40 to 60 based on the total resin solids of the polymer (b).

Abstract: There is provided a coating composition capable of forming a coating film exhibiting excellent scratch resistance over a long period of time even in an outdoor environment. The coating composition including a hydroxyl group-containing resin (A), a crosslinking agent (B), and a dispersion of silica particles (C) having a hydroxyl group-containing acrylic resin (c1) bonded thereto and an ultraviolet absorber (c21) and/or a hindered amine-based light stabilizer (c22) bonded thereto.

Abstract: Provided is a coating composition suitable for in-mold coating and suitable particularly for a coating material for exterior applications. A two-pack coating composition comprising a main resin and a curing agent, wherein the main resin comprises a polyol, a curing catalyst, and a light stabilizer; the curing agent comprises an isocyanurate compound; a hydroxyl value of the polyol is 300 mg KOH/g or more and 1000 mg KOH/g or less; an average number of hydroxy groups of the polyol is 3 or more; a content of the curing catalyst is 0.25 parts by mass or more and 10 parts by mass or less based on 100 parts by mass of the polyol; the light stabilizer comprises a hindered amine-based compound; a common logarithm pKb of a base dissociation constant of the hindered amine-based compound is 6.5 or more and 14 or less; and a content of a solvent is 30% by mass or less.

Abstract: Building materials that include a structure such as a structural support are described, wherein the structure defines a plurality of cavities at least partially filled with a polymeric foam. The polymeric foam may include a hydrophobic polyurethane foam having a density less than 5 pcf and/or the structure may include a hydrophobic polymer.

Abstract: Durable antibacterial coatings are prepared by inter-diffusing zwitterionic polyurethane in acrylic polyurethane. Bacterial attachment is substantially eliminated from the surface of the coatings due to the hydrophilicity of the zwitterionic polyurethane. Long-term antibacterial properties were observed for both Gram-negative and Gram-positive bacteria even when the coatings were constantly challenged by mechanical abrasion.

Abstract: The present invention provides a mixed composition of an organosilicon compound (C) having an amino group or an amine skeleton, a solvent 1, and a solvent 2, in which, when the ratio of the hydrogen bond term (?H) to the dispersion term (?D) in the Hansen solubility parameters is defined as ?H/?D, the ratio (?H/?D) for the solvent 1 is less than 0.410 and the ratio (?H/?D) for the solvent 2 is 0.410 or more.

Abstract: Provided is a polishing composition in which a polishing speed of silicon germanium is sufficiently high and a selection ratio of the polishing speed of silicon germanium is sufficiently high. A polishing composition includes: abrasive grains; an inorganic salt; and an oxidizing agent, in which the number of silanol groups per unit surface area of the abrasive grains is more than 0/nm2 and 2.0/nm2 or less, and a pH of the polishing composition is 6.0 or more.

Abstract: A preparation method for a phosphate-based high-temperature-resistant adhesive self-reinforced by in-situ growth and locking of flaky kyanite is provided, including: preparing a modified filler by using bauxite, kaolin, boric acid and boric oxide, and taking a reaction solution of diluted phosphoric acid and aluminum hydroxide powder as latex liquid, and mixing the modified filler, the latex liquid, and silicon powder to prepare the adhesive. After being treated at 700° C., kyanite grows within the adhesive. As the treatment temperature increases, the size and content of the kyanite are further increased, thereby forming a locking and reinforcing structure. After being treated at 1100° C., the bonding strength of the adhesive reaches up to about 50 MPa, and the adhesive illustrates excellent high-temperature-resistant bonding strength.

Abstract: A two-component solventless laminating adhesive composition including: (A) at least one isocyanate component comprising at least one isocyanate; and (B) at least one polyol component comprising: (Bi) at least one amine-initiated polyol; (Bii) at least one aliphatic polyester polyol; and (Biii) at least one polyether polyol; a process for preparing the above solventless adhesive laminating composition; and a laminate structure made using the above solventless adhesive laminating composition.

Abstract: The invention provides hydrophilic hot melt adhesive composition with improved water wetting properties. The hydrophilic hot melt adhesive is particularly suitable in the manufacture of disposable nonwoven articles.

Abstract: The present disclosure is directed to a water-based adhesive composition. In an embodiment, the water-based pressure-sensitive adhesive composition includes a plurality of particles having a polymodal particle size distribution. The particles are composed of (A) a first polymer, and (B) a second polymer different than the first polymer. The particles have a d50 greater than 450 nm and a polydispersity index, PDi, from 0.5 to 2.0. (C) The composition has a solids content greater than or equal to 65.5 wt %. Further disclosed are articles with the water-based pressure-sensitive adhesive composition.

Abstract: Layer constructions allow an adhesive tape to be wound to form a spool simply and with relatively uncomplicated apparatus. At least one layered construction comprises: an adhesive tape comprising at least one outer layer of pressure-sensitive adhesive; a release liner lying on the outer layer of pressure-sensitive adhesive; and an interliner lying on the side of the adhesive tape opposite the outer layer of pressure-sensitive adhesive, at least the side of the interliner facing away from the adhesive tape being adhesively furnished, wherein all layers of the layered construction finish substantially flush with respect to each other. At least one spool comprising a spool core and the at least one layered construction wound crosswise in a plurality of plies on said core, and a method for producing the at least one spool are also disclosed.

Abstract: Described herein is a release coating comprising a blend of: (a) a first polymer, wherein the first polymer is a silicone-containing (meth)acrylic polymer; and (b) a second polymer, wherein the second polymer comprises the polymerization reaction product of: (i) a first monomer having an alkyl group with 12 to 24 carbon atoms, a linking group containing a nitrogen or ester group, and a free-radically polymerizable (meth)acryl group; and (ii) a second free-radically polymerizable monomer having less than 12 carbon atoms. Such release coatings can be coated onto a substrate and used as a release coating for pressure sensitive adhesives.

Abstract: The present application relates to a method for manufacturing a foldable backplate film, and according to one aspect of the present invention, a method for manufacturing a foldable backplate film that the foldable backplate film is manufactured by a method of cutting it in a direction from the release film to the protective film upon half-cutting, and then release-changing the release film, whereby by improving a half-cutting process, the foldable backplate does not fall off upon the release film peeling, is provided.

Abstract: A description is given of a two-part adhesive product comprising a first composition in the form of an aqueous polymer dispersion comprising at least one adhesive polymer which is formed by emulsion polymerization of soft (meth)acrylic ester monomers, monomers with an acid group, styrene, and optionally further monomers. A second composition comprises a metal salt coagulant which causes instantaneous coagulation of the first composition when contacting the first with the second composition.

Abstract: The present invention relates to a radiation curable (meth)acrylic adhesive composition comprising, consisting essentially of: i) a (meth)acrylated polydiene resin; ii) a multi-functional (meth)acrylic monomer component; iii) a mono-functional (meth)acrylic monomer component; and iv) a photo initiator component.

Abstract: The present disclosure relates to an adhesive comprising at least one of the following copolymer A: the copolymer A has at least one repeating unit carrying an amide group and a carboxyl and/or its ammonium salt and at least one other repeating unit different from the one carrying an amide group and a carboxyl and/or its ammonium salt. The present disclosure also relates to an artificial board formed of a lignocellulose material and the adhesive and a method for manufacturing the artificial board.

Abstract: A process for manufacturing a friction material and an inorganic liquid binder for use in manufacture of friction materials. The process for the friction material makes use of a liquid binder that provides the performance of process steps with significant reduction in temperature, pressure and manufacturing time, making the process more energy efficient. The process also includes manufacturing a liquid binder that allows the use of different types of inorganic precursors with crystalline and/or amorphous features, through a mechanical activation process of the inorganic precursor. The process pertains to the fields of chemical engineering, mechanical engineering, materials engineering, focused on the area of friction materials for vehicle brake systems.

Abstract: Refrigerant compositions including 2,3,3,3-tetrafluoropropene (HFO-1234yf) and at least one of ethane (R-170) or propane (R-290) which exhibit near-azeotropic or azeotrope-like behavior. The refrigerant compositions exhibit a low global warming potential (GWP) and are non-ozone depleting. The refrigerant compositions are useful as a heating or cooling fluids in a variety of heating or cooling systems including heat pumps and other heating and cooling loops, in, for example, the automotive industry.

Abstract: A composition comprises (i) from about 2 to about 50% by weight 1,1-difluoroethene (vinylidene fluoride, R-1132a), (ii) from about 2 to about 95% by weight difluoromethane (R-32), and (iii) 2,3,3,3-tetrafluoropropene (R-1234yf).

Abstract: A method includes mixing a dopant salt of at least one of cobalt, nickel, zinc, and scandium with a silicate, in a solvent, to form a first solution. The method includes mixing the first solution with a solvent mixture to form a second solution. The method further includes mixing the second solution with an acid to form an acid solution. The method further includes adding a catalyst and a polymer to the acid solution to form the doped PCM. The doped PCM includes the catalyst, the polymer, at least one of cobalt, nickel, zinc, and scandium, and SiO2.

Abstract: A non-curable thermally conductive grease composition includes: A 100 parts by mass of an ethylene-?-olefin copolymer with a kinematic viscosity of 10000 mm2/s or less at 40° C.; and B. 115 to 580 parts by mass of thermally conductive particles with respect to 100 parts by mass of the component A. The thermally conductive particles contain the following: B1. 55 to 350 parts by mass of irregularly-shaped alumina with a median particle size of 0.1 to 1 ?m, in which a part or all of the alumina is surface treated with a specific alkoxysilane compound or its partial hydrolysate; B2. 5 to 60 parts by mass of plate-shaped boron nitride with a median particle size of 0.1 to 10 ?m; and B3. 55 to 170 parts by mass of aggregated boron nitride with a median particle size of 20 to 70 ?m. The B3/B2 mass ratio is 2 to 20. Thus, the thermally conductive grease composition is less likely to generate low molecular siloxane and has high drop resistance and a low specific gravity.

Abstract: A method of drilling a subterranean geological formation is described. The method includes driving a drill bit to form a wellbore in the subterranean geological formation thereby producing a formation fluid including hydrogen sulfide. The method further includes injecting a drilling fluid into the subterranean geological formation through the wellbore. The drilling fluid includes an aqueous solvent, a hydrogen sulfide scavenger including particles of a manganese oxide supported on a porous support. The particles are suspended in the aqueous solvent. The method further includes reacting the hydrogen sulfide scavenger with the hydrogen sulfide present in the formation fluid to form a manganese sulfide.

Abstract: The present disclosure relates drilling fluids and methods of producing and using drilling fluids. The drilling fluid include an aqueous base fluid; at least one of a clay-based component and a mud; and a shale inhibitor comprising silica grafted with glutamate-glycol, wherein the drilling fluid does not comprise KC1, has a shale cutting rate from 65% to 99%, and has an anti-swelling capacity from 55% to 99%. The method of using the drilling fluid in drilling operations includes mixing an aqueous base fluid, a shale inhibitor comprising silica grafted with glutamate-glycol, and at least one of a clay material and a mud to produce a drilling fluid; and introducing the drilling fluid to a subsurface formation, wherein the drilling fluid does not comprise KC1, has a shale cutting recovery rate from 65% to 99%, and has an anti-swelling capacity from 55% to 99%.

Abstract: The effectiveness of expansive cement systems may be diluted when, during a well cementing operation, commingling takes place between the cement slurry and a spacer fluid, a drilling fluid, or both. Incorporating expansive agents in the spacer fluid or drilling fluid may reduce or negate the loss of expansion at the cement slurry/spacer interface or the cement slurry/drilling fluid interface, thereby promoting zonal isolation throughout the cemented interval.

Abstract: Methods for cementing. An example method provides a cement composition comprising an aqueous fluid, a cement, and a cement retarder; wherein the cement retarder is a waste residue from a manufacturing process of a sweetener and comprises a sugar concentration of at least 40%, a Brix value of at least 60, a nitrogen-free extract concentration of at least 50%, a total solids concentration of at least 60%, a crude protein concentration less than 10%, a fat concentration less than 5%, a fiber concentration less than 5%, and an ash concentration less than 10%. The method also introduces the cement composition into a wellbore penetrating a subterranean formation and pumps the cement composition to a location within the wellbore, and allows the cement composition to set in the location.

Abstract: Solids dissolution may be promoted using a solvent blend comprising a disulfide solvent, particularly additional solids present in combination with elemental sulfur deposits. The solvent blends may comprise at least one disulfide solvent, at least one amine solvent, at least one ketone solvent, at least one ester solvent, and optionally water. Solids dissolution methods may comprise: identifying one or more solids in addition to elemental sulfur to be contacted by the solvent blend; adjusting a composition of the solvent blend to afford selectivity for dissolution of at least a portion of the one or more solids; and contacting the solvent blend with elemental sulfur and the one or more solids to promote at least partial dissolution thereof.

Abstract: A composition for treating a formation includes a surfactant including an amphiphilic block copolymer having a first block and a second block and an acid. The amphiphilic block copolymer is a reaction product of a first monomer and a second monomer via a reversible addition-fragmentation chain transfer polymerization (RAFT) in a two-step reaction using a chain transfer agent (CTA) and a radical initiator. The surfactant favors adsorption onto a surface of the formation such that a temporary barrier is formed, thereby attenuating a reaction rate between the acid and the formation.

Abstract: A water-in-oil emulsion that includes an oil phase (O) and an aqueous phase (A) at an O/A ratio of from about 1:8 to about 10:1; wherein the water-in-oil emulsion includes the oil phase as a continuous phase that includes an inert hydrophobic liquid, at least one water-insoluble hydrophobic monomer, and at least one surfactant, and the aqueous phase as a dispersed phase of distinct particles in the oil phase that includes water and a water soluble polymer that includes: (i) at least one acrylamide monomer and (ii) at least one acrylic acid monomer; wherein the water soluble polymer is present in an amount from about 10 to about 35 weight percent of the water-in-oil emulsion.

Abstract: A system and method for hydraulic fracturing a subterranean formation with fracturing fluid to generate fractures, and intermittently adjusting a characteristic of the fracturing fluid conveying proppant to form pillars of proppant in the fractures.

Abstract: A compound having a Pt tetradentate structure of Formula 1, is provided. In the structure of Formula 1, rings C and D each independently represent 5- or 6-membered carbocyclic or heterocyclic ring; L1, L2, and L3 are each independently a direct bond, BR, NR, PR, O, S, Se, C?O, S?O, SO2, SiRR?, GeRR?, alkyl, cycloalkyl, or a combination thereof; the sum of n1 and n2 is 1 or 2; X is selected from NRE, O, S, and Se; X3 and X4 each independently carbon or nitrogen; and one of Q1, Q3, and Q4 is oxygen, and the remaining two of Q1, Q3, and Q4 each represents a direct bond. Formulations and devices, such as an OLEDs, that include the compound of Formula 1 are also described.

Abstract: An integral system for automated and non-intrusive of cleaning and non-destructive inspection (ultrasonic volumetric testing and visual testing) to detect, characterize and monitor with precision the level of internal and external damage (Cracks, deformations, corrosion, erosion, etc.) that may be present in coke drums throughout their life cycle is disclosed. Embodiments are disclosed that enable a condition of a coke drum to be estimated in a reliable manner for their fitness for service from the results obtained from the automated inspection with the non-destructive methods of ultrasound, visual testing and/or liquid Penetrant Testing.

Abstract: A hydrothermal liquefaction (HTL) system has a biomass slurry flow path with a first pump and a first heat exchanger network downstream of the first pump. The first heat exchanger network includes plurality of heat exchangers in a parallel, series, and/or series-parallel flow arrangement. The biomass slurry flow path extends through cold flow sides of the heat exchangers of the first heat exchanger network. The biomass slurry flow path includes a second pump downstream of the first heat exchanger network, and a second heat exchanger network downstream of the second pump. The biomass slurry flow path extends through cold flow sides of the heat exchangers of the second heat exchanger network. A hydrothermal liquefaction (HTL) reactor is downstream of the second heat exchanger network. Heat transfer liquid in a heat transfer liquid circuit flows through hot flow sides of the heat exchangers of the second heat exchanger network.

Abstract: There is described a pyrolysis system for converting carboneous materials into biochar including a kiln, a retort, and a gas recovery system including a combustor supplying hot air to the kiln, a conduit fluidly connected between the retort and the combustor, the conduit conveying the pyrolysis gas and residues from a chamber of the retort to the combustor, and a filter cartridge fluidly connecting the chamber of the retort to the conduit for filtering the pyrolysis gas and the residues conveyed from the chamber of the retort to the combustor, the filter cartridge removably located inside the conduit and extending at least partially inside the chamber of the retort. Methods for operating the pyrolysis system are also described. The pyrolysis system and methods described herein produce biochar with improved resistance to self-heating.

Abstract: Pitch compositions may be obtained by subjecting one or more crude oils to steam cracking. Processes for producing pitch compositions suitable for spinning into fibers from steam cracking of crude oils may comprise: steam cracking of one or more crude oils in a steam cracking zone to produce a first effluent comprising a heavy oil mixture comprising a steam cracker tar, a second effluent comprising a mixture of gaseous products and liquid products, and a third effluent comprising one or more bottoms products; pretreating and heat treating the first, second and/or third effluent to produce a pitch composition having a mesophase content from 0 vol % to 100 vol %, based on the total volume of the pitch product, an MCR in the range of about 40 wt % to about 95 wt %, and a softening point Tsp in the range of about 50° C. to about 400° C.

Abstract: A process includes a.) supplying a biomass feedstock, a fluidizing gas having hydrogen, and a catalyst recirculation stream having deoxygenating catalyst to a mixing zone of a fluidized bed reactor; b.) allowing the biomass feedstock, the fluidizing gas and the deoxygenating catalyst to move upwards through the fluidized bed reactor from the mixing zone to a bulk reactor zone; c.) allowing the biomass feedstock to contact the deoxygenating catalyst in the presence of the fluidizing gas in the bulk reactor zone of the fluidized bed reactor to produce a hydropyrolysis reactor output including at least one non-condensable gas, a partially deoxygenated hydropyrolysis product and char; and d.) withdrawing at least a portion of the deoxygenating catalyst from the bulk reactor zone to form the catalyst recirculation stream that is supplied to the mixing zone in step a).

Abstract: The present disclosure provides a composition for dewatering a hydrocarbon feed, the composition comprising: a) at least two alkyl aromatic poly-ethoxy alcohol; and b) at least one non-ionic surfactant, wherein the at least two alkyl aromatic poly-ethoxy alcohol to the at least one non-ionic surfactant weight ratio is in the range of 0.75: 1.5 to 1.5:3.0.

Abstract: Provided is a technology to convert an oil having a high content of Cl into a solvent. Impurities such as Cl, S, N, and metals are removed from an oil having a boiling point of 340° C. or lower in a waste oil having a high content of Cl, and hydrogenation is carried out to recover an oil, and the oil may be applied as a solvent. Separation by boiling points to meet the properties of the solvent product is performed, a solid acid material and an oil having a high Cl content are mixed, impurities are removed by a heat treatment at a high temperature, and hydrogenation is carried out with a metal oxide catalyst, thereby manufacturing a solvent product.

Abstract: Disclosed are a process and system that are capable of performing selective hydrogenation on aromatic fractions by configuring a catalyst bed through staged loading of a plurality of hydrogenation catalysts with different catalytic properties, or configuring a catalyst system in which a plurality of hydrogenation catalysts are arranged using a plurality of reactors in such a way as to be equivalent with the staged loading, and as a result, are capable of suppressing aromatic loss while improving the selective removal of unsaturated hydrocarbons in the aromatic fraction and durability compared to the case of using a single catalyst.