407 results about "Petroleum resin" patented technology

The invention relates to the technical field of high polymer materials, and discloses a high-durability pressure-sensitive adhesive with low VOCs release and a preparation method thereof.The high-durability pressure-sensitive adhesive is prepared from, by weight, 50-80 parts of acrylate copolymer, 0.5-5 parts of cross-linking agent, 10-30 parts of tackifying resin, 1-10 parts of inorganic filler, 0.1-2 parts of antioxidant and 20-50 parts of solvent. Wherein the tackifying resin is at least one of hydrogenated petroleum resin and glycerol ester of rosin, and the inorganic filler is one of nanoscale silicon dioxide and calcium carbonate. Butyl acrylate is used as a main monomer, 2-ethylhexyl acrylate is used as a comonomer, acrylic acid is used as a functional monomer, benzoyl peroxide is used as an initiator, free radical polymerization is carried out at the temperature of 60-85 DEG C under the protection of nitrogen for 4-8 hours, and a copolymer chain with the molecular weight distribution index (PDI) smaller than or equal to 2.5 is formed, so that the viscosity and elasticity of colloid can be balanced; the peeling strength and the weather resistance are improved, and the colloid is prevented from being too soft or embrittled.

The invention relates to the technical field of automobile manufacturing, and discloses a low-density strong-viscous-force intumescent structure reinforcing rubber sheet and a preparation method thereof, and the reinforcing rubber sheet comprises the following components: rubber, carbon black, a vulcanizing activator, hydrogenated petroleum resin, a plasticizer, a powder filler, epoxy resin, a curing agent, a foaming agent, sulfur and other rubber additives. The preparation method comprises the following steps: mixing the rubber, the carbon black, the vulcanizing activator, the hydrogenated petroleum resin, the plasticizer and the powder filler to prepare a rubber master batch; kneading the rubber master batch with epoxy resin, a powder filler, a curing agent, a foaming agent, sulfur and other auxiliaries to form a rubber material; and after being extruded and compounded and attached to glass fiber cloth and isolation paper, the mixture is compacted and cut into sheets. According to the invention, the reinforcing ratio, the foaming ratio and the initial bonding force are obviously improved, and the balance of light weight and high strength is realized.

The application relates to the technical field of pavement materials, and particularly discloses a high-strength asphalt-based pavement material and a preparation method and application thereof. The high-strength asphalt-based pavement material comprises the following raw material components in mass fractions: waste rubber powder 60-80 parts, base asphalt 20-50 parts, sodium lignosulfonate modified petroleum resin 10-20 parts, deacidified waste oil 5-15 parts and solid filler 20-30 parts; wherein the raw material components of the solid filler comprise furan resin glass fiber reinforced material, cement kiln dust, blast furnace slag and coal gangue powder. The high-strength asphalt-based pavement material provided by the application has excellent road performance, can maintain good stability at low temperatures, is not prone to cracking, the raw material components are cheap and easy to obtain, the preparation cost is low, and the treatment pressure of solid waste can be effectively relieved.

The invention discloses a high-durability reflective hot-melt road marking coating and a preparation method thereof, and belongs to the technical field of coatings. The coating is prepared from the following raw materials in parts by weight: 15-25 parts of modified petroleum resin, 2-5 parts of a plasticizer, 5-15 parts of glass beads, 5-10 parts of pigment, 45-60 parts of filler, 3-8 parts of a durability enhancer and 0.5-1.5 parts of an antioxidant. The modified petroleum resin is obtained by hydrolyzing silane monomers in a specific molar ratio to prepare an epoxy-terminated organic silicon oligomer and then chemically grafting the epoxy-terminated organic silicon oligomer with petroleum resin. The durability reinforcing agent is prepared by compounding nano silicon dioxide, elastic polymer micro powder and a silane coupling agent according to the mass ratio of (1-2): (1-2): 1. Through the synergistic effect of resin modification and the composite reinforcing agent, the coating has excellent wear resistance, high adhesive force, excellent low-temperature flexibility and lasting light reflection performance, and is controllable in cost, convenient to construct and wide in application prospect.

The invention discloses a high-wear-resistance antiskid road marking coating and a preparation method thereof, and belongs to the technical field of road marking coatings. The coating comprises the following components in parts by weight: 15-25 parts of petroleum resin, 2-5 parts of a plasticizer, 30-40 parts of a composite wear-resistant aggregate, 15-25 parts of a composite antiskid aggregate, 5-10 parts of titanium dioxide, 0.5-2 parts of a silane coupling agent, 0.5-1.5 parts of polyethylene wax, 5-10 parts of glass beads, 0.1-0.3 part of an antioxidant 1010 and 10-20 parts of a filler. Through the synergistic effect of two types of specific aggregates, a hard-supporting and elastic-buffering wear-resistant matrix and a lasting multi-stage anti-skid surface are constructed in the coating, and the technical problems that a traditional marking coating is poor in wear resistance, insufficient in anti-skid performance and short in reflective life are solved; the obtained coating has the characteristics of ultrahigh wear resistance, lasting high skid resistance, strong adhesive force and slow reflection performance attenuation.

The invention discloses nano-composite high-viscosity and high-stability modified asphalt and a preparation method thereof, and belongs to the technical field of road engineering materials. The modified asphalt is prepared from the following raw materials in parts by weight: 100 parts of matrix asphalt, 3 to 10 parts of star-shaped SBS (Styrene Butadiene Styrene), 5 to 25 parts of waste tire rubber powder, 2 to 6 parts of C5 / C9 petroleum resin, 2 to 8 parts of naphthenic oil, 0.1 to 0.5 part of sulfur, 1 to 3 parts of organic montmorillonite, and 0.5 to 2 parts of optional maleic anhydride grafted polypropylene and / or 0.1 to 0.5 part of silane coupling agent. The core of the preparation method is that through a three-stage process of swelling and nano dispersion, development and interface reaction and cross-linking stabilization, the technical problems of poor compatibility and easy segregation of an SBS / rubber powder composite system are fundamentally solved by utilizing the physical barrier effect of a nano sheet layer and the synergistic effect of vulcanization / interface chemical bonding. The obtained product has ultrahigh viscosity (dynamic viscosity gt at 60 DEG C, 80000 Pa.s), excellent storage stability (segregation error 1t at 48 hours, 2.0 DEG C) and excellent aging resistance, and the comprehensive performance of the product is far better than that of the prior art.

The invention relates to a high-solid-content epoxy glass flake heavy anti-corrosion coating for an offshore wind power foundation, which consists of a component A and a component B, the component A is prepared from raw materials in percentage by weight as follows: 10%-20% of bisphenol A epoxy resin, 20%-40% of modified hydrogenated epoxy resin, 5%-10% of liquid petroleum resin, 1%-2% of a rheological aid, 0.1%-1% of a dispersant, 0.1%-1% of a defoaming agent, 1%-3% of a silane coupling agent, 5%-10% of modified glass flakes, 20%-40% of functional filler and 0-10% of a composite environment-friendly solvent; and the component B is a mixed amine epoxy curing agent. The epoxy glass flake coating disclosed by the invention can be thickly coated at one time, has excellent adhesive force, hardness, wear resistance and impact resistance, is high in drying speed, excellent in chemical corrosion resistance, seawater soaking resistance and cathodic disbonding resistance, and meets the performance requirements of NORSOK M-501: 2022 (edition VII) Surface Treatment and Protective Coating.

The invention relates to the technical field of pavement materials, and particularly discloses a high-strength asphalt-based pavement material as well as a preparation method and application thereof. The high-strength asphalt-based pavement material is prepared from the following raw material components in parts by mass: 60 to 80 parts of waste rubber powder, 20 to 50 parts of matrix asphalt, 10 to 20 parts of sodium lignin sulfonate modified petroleum resin, 5 to 15 parts of deacidified waste grease and 20 to 30 parts of solid filler, wherein the solid filler comprises the following raw material components: a furan resin glass fiber reinforced material, cement kiln ash, blast furnace slag and coal gangue powder. The high-strength asphalt-based pavement material provided by the invention has excellent pavement performance, can keep good stability at low temperature, is not easy to crack, is low in raw material components and easy to obtain, is low in preparation cost, and can also effectively relieve the treatment pressure of solid wastes.

The invention relates to the technical field of production management, and discloses a petroleum resin production management method and system based on the Internet of Things. The method comprises the following steps: dividing petroleum resin production data into structured production data comprising a production basic data layer, a real-time production process layer and a quality detection interaction layer; performing production feature extraction on the structured production data to obtain comprehensive production process feature data; based on the comprehensive production process feature data, constructing a production feature tensor including a time dimension, a temperature dimension, a pressure dimension, a raw material dimension, a catalyst dimension and a product quality dimension, and performing tensor decomposition on the production feature tensor to obtain a production process digital portrait; and inputting the digital portrayal of the production process into a connected graph convolutional network for relation modeling to obtain a production traceability relation graph. The operation efficiency and the expandability of the petroleum resin production management system are improved.

The invention relates to the field of adhesive preparation, in particular to a preparation method of modified C5 petroleum resin and application of the modified C5 petroleum resin in a hot melt adhesive. According to the method, high-quality synthesis of the C5 petroleum resin under mild conditions is realized by adopting the eutectic solvent catalyst containing AlCl3, so that the softening point of the synthesized petroleum resin is relatively high, and the chromaticity is relatively low; by combining the use of an isoamylene / maleic anhydride combined modifier system, the performance of the C5 resin can be comprehensively improved, and the C5 resin can be more easily matched with the requirements of application scenes, especially the application in hot melt adhesives.

The invention provides a non-asphalt-based self-adhesive and a pre-laid waterproof coiled material and application thereof. The non-asphalt-based self-adhesive glue is prepared from the following raw materials in parts by weight: 120 to 150 parts of environment-friendly softening oil, 50 to 100 parts of petroleum resin, 15 to 35 parts of SBS elastomer resin, 25 to 35 parts of butadiene styrene rubber, 10 to 18 parts of high-temperature modified wax, 5 to 15 parts of density regulator, 5 to 10 parts of pour point depressant and 35 to 40 parts of inorganic filler. The pre-paved waterproof coiled material comprises a sand layer, a first adhesive layer, a reinforced tire base layer, a second adhesive layer and an anti-sticking layer which are arranged in sequence. According to the non-asphalt-based self-adhesive glue provided by the invention, a high-performance non-asphalt-based self-adhesive lap joint pre-paved anti-adhesive waterproof coiled material can be obtained, and compared with an asphalt pre-paved waterproof coiled material, the non-asphalt-based self-adhesive lap joint pre-paved anti-adhesive waterproof coiled material has the characteristics of being more environment-friendly, more durable, better in adhesion and better in waterproof effect; compared with the existing high-molecular pre-paved waterproof coiled material, the high-molecular pre-paved waterproof coiled material has the characteristics of lower cost, higher manufacturing efficiency, better fitness, excellent comprehensive performance and the like.

The invention discloses foamed asphalt as well as a preparation method and application thereof and a cold recycled asphalt mixture, and relates to the technical field of road construction materials, the foamed asphalt comprises the following components in parts by mass: 60-70 parts of matrix asphalt, 18-22 parts of activated desulfurized rubber powder, 4-6 parts of petroleum resin, 3-6 parts of a functional aqueous solution, 2-3 parts of a viscosity reducer and 0.3-0.6 part of a foam stabilizer; according to the invention, the activated desulfurized rubber powder is introduced as an interface toughening component, so that the adhesive property and crack resistance of the cold recycled asphalt mixture can be effectively improved; meanwhile, a novel functional water solution is developed to replace traditional single water, a water-rubber powder-asphalt three-phase synergistic effect system is constructed, and the early forming strength of the cold recycled asphalt mixture is remarkably improved.

The invention discloses a colored non-cured rubber waterproof coating, a preparation method thereof and a waterproof laminate. The colored non-cured rubber waterproof coating is mainly prepared from the following components in parts by weight: 20-35 parts of a plasticizer, 15-30 parts of petroleum resin, 5-12 parts of a polyolefin elastomer (POE), 2-6 parts of a high-temperature additive, 0-40 parts of an inorganic filler, 2-6 parts of an inorganic pigment, 0.1-0.3 part of a defoaming agent and 1-5 parts of a special additive, according to the invention, the polyolefin elastomer without double bonds is used as a modifier, so that the aging resistance of the product is greatly improved; the additive with functional groups is added, so that the wettability of the product to the surface of a base layer is improved, and 100% full bonding with the base layer is ensured; the oily high-temperature-resistant defoaming agent is added, so that the hidden danger of barrel overflowing caused by foam generated by heating in the construction process is eliminated; the product not only has good viscosity performance with an asphalt coiled material, but also has excellent viscosity performance with a polymer waterproof coiled material, is safe, environment-friendly and free of peculiar smell, greatly improves the construction environment, and ensures the body health of constructors.

The invention relates to the technical field of high-molecular compounds, in particular to a novel rubber modifier and a monitoring preparation system thereof, the novel rubber modifier is composed of rosin polyol ester and petroleum resin through graft polymerization reaction, the rosin polyol ester is prepared from rosin substances and polyol through esterification reaction under the action of a composite catalyst; the monitoring preparation system comprises a reaction unit, a feeding unit, a detection unit and a graft polymerization control unit, and the graft polymerization control unit adjusts the operation parameters of the reaction unit and the addition amount of a catalyst according to the processes of the esterification reaction and the graft polymerization reaction; according to the invention, the rosin polyol ester modified petroleum resin is used as the tear-resistant modifier, and the esterification reaction and the dendritic reaction in the preparation process are detected and controlled in the whole process by monitoring the preparation system, so that the tear-resistant modifier product with excellent performance and controllable quality is obtained.

The invention relates to the technical field of furniture protective films, in particular to a self-adhesive furniture skin-touch protective film which sequentially comprises an organic silicon release film from bottom to top, the organic silicon release film comprises a base material and a coating, the base material is a transparent polyethylene glycol terephthalate film with the thickness of 80-120 micrometers, and the coating is a transparent polyethylene glycol terephthalate film with the thickness of 80-120 micrometers. The coating is an organic silicon release agent coated on the base material, and the coating weight of the organic silicon release agent is 0.8-1.2 g / m; the pressure-sensitive adhesive layer comprises 60 to 70 weight percent of a compound system of a saturated hydrocarbon block copolymer and a hydrogenated styrene isoprene styrene block copolymer; 25 to 35 wt% of hydrogenated C9 petroleum resin; 3 to 5 weight percent of temperature-sensitive microcapsules; and 2 to 5 wt% of naphthenic oil. According to the invention, through the cooperation of innovative multi-layer structures, the product can maintain excellent comprehensive performance under different parameter configurations, and multiple requirements of the furniture protective film on easy construction, high transparency, strong protection, good touch feeling and aging resistance are met.

The invention belongs to the technical field of asphalt processing, and discloses high-viscosity rubber modified asphalt and a preparation method thereof.The high-viscosity rubber modified asphalt is prepared from 70 # matrix asphalt, graded vulcanized rubber powder, a linear SBS polymer, C5 petroleum resin type terpene resin, cycloalkane oil, polyisobutene modified nano-zinc oxide and a sulfur cross-linking stabilizer; by combining a three-dimensional network structure formed by the cross-linking stabilizer, the layering risk caused by density difference is remarkably reduced, the factory production and transportation period is prolonged, the anti-aging performance is further improved through the synergistic effect of the nanometer material and vulcanization, the asphalt is endowed with better elastic recovery and anti-fatigue capacity, and the service life of the asphalt is prolonged. And the whole formula breaks through the limitation of the mixing amount of the traditional rubber powder, the fluidity of the mixture is optimized while the high viscoelastic characteristic is ensured, the problems of wheel sticking during paving and non-uniform void ratio are solved, the construction efficiency and the pavement durability are considered, and the efficient cyclic utilization of waste rubber resources is promoted.

The present application relates to the technical field of polymer materials, and discloses a modified resin and a preparation method therefor, a stiffening masterbatch, and a BOPP thin film and a preparation method therefor. The modified resin disclosed in the present application is obtained by grafting and modifying a hydrogenated petroleum resin with a bio-based carboxylic acid monomer. The modified resin has a softening point of 120-165°C, a yellowness index of less than or equal to 15, a volatile organic compound content of less than or equal to 500 ppm, and an acid value of 0.1-25 mgKOH / kg. The raw materials thereof are widely available, and the volatile organic compound content of the modified resin is low. The modified resin is suitable for preparing a BOPP thin film with good optical performance, mechanical properties, and thermodynamic properties.

This invention discloses a high-transmittance insulating ink for back-contact batteries and its preparation method, belonging to the technical field of insulating inks. The insulating ink comprises the following components by mass percentage: 60%~64% base resin, 1%~2% thiol, 2%~4% tackifier, and 25%~30% diluent; wherein the base resin is a hydroxyl-terminated polyester-modified acrylate, the thiol is ethylene dithiol, the tackifier is at least one of terpene resin, C5 petroleum resin, and C9 petroleum resin, and the diluent is at least one of 1,4-butanediol diacrylate, pentaerythritol triacrylate, and dipropylene glycol diacrylate. This invention utilizes the reaction of the dithiol's dithiol group with the hydroxyl groups (-OH) or double bonds in the hydroxyl-terminated polyester-modified acrylate to form thioether bonds (-S-) or thioester bonds, constructing a three-dimensional cross-linked network, thereby significantly improving the hardness and transmittance of the cured resin system. The reasonable combination of tackifier and diluent allows the ink to achieve high adhesion while maintaining hardness.

This utility model discloses an adjustable temperature petroleum resin granulation device, relating to the technical field of petroleum resin granulation equipment. It includes a mixing tank, a temperature control chamber, and a granulation tank. Pipes connect the mixing tank, temperature control chamber, and granulation tank, and control valves are installed at the interfaces of each pipe. A granulation sleeve is installed at the end of the pipe in the temperature control chamber. A transmission component is installed on the side of the mixing tank. A holding basket is provided in the granulation tank. Granulation connecting holes are equidistantly opened at the lower end of the granulation sleeve. This utility model forms a closed-loop process from raw material mixing and temperature adjustment to final granulation. All components are connected through pipes and control valves, achieving directional flow and precise control of materials, significantly improving granulation efficiency and product quality consistency, and ultimately solving the problem of insufficient temperature control precision in existing petroleum resin granulation devices.

To provide a toner that offers excellent low-temperature fixation while simultaneously achieving both filming resistance in high-temperature, high-humidity environments and release properties during fixation. [Solution] A toner containing toner particles that include a polyester resin, an aromatic petroleum resin, and a mold release agent, A toner characterized in that, when the cross-section of the toner particles is observed with a scanning electron microscope, the domains of the release agent satisfy the following requirements. (Requirements) Each toner particle contains, on average, 2 to 8 release agent domains with a major axis of 400 nm or more and an aspect ratio of 0.7 or less calculated by the following formula (1). Aspect ratio = (Short diameter of release agent domain) / (Long diameter of release agent domain) Equation (1)

The present disclosure relates to a rubber composition and a method of preparing the same, the rubber composition comprising a viscosity modifier and a modified polymer having a structure in which a molecular weight regulator is coupled to at least one of both ends of an at least partially hydrogenated or non-hydrogenated petroleum resin. The rubber composition according to the present disclosure has improved processability and thus may replace process oil, and may markedly improve gas impermeability.

The invention belongs to the field of road marking coatings, and particularly relates to a high-adhesion and high-toughness hot-melt reflective marking coating. The marking paint is composed of a component A and a component B, the component A is prepared from the following raw materials in parts by weight: 200 to 300 parts of C5 petroleum resin, 300 to 500 parts of filler, 20 to 100 parts of pigment, 10 to 20 parts of plasticizer, 5 to 10 parts of anti-ultraviolet agent, 200 to 300 parts of modified glass beads and 10 to 50 parts of hydrogen-containing silicone oil; the component B is prepared from the following raw materials in parts by weight: 10 to 50 parts of vinyl alkoxy silane oligomer and 0.02 to 0.5 part of platinum catalyst. The hot-melt reflective marking paint prepared by the invention has excellent toughness, bonding strength and wear resistance, effectively reduces the risks of falling off, cracking and the like of the marking, and remarkably prolongs the service life of the road marking.

The invention relates to an interlayer separant and application thereof. The interlayer separant is used between a polyurethane coating and an asphalt coiled material and is formed by a polyurethane coating, and the polyurethane coating comprises the following components: maleic anhydride modified polyurethane, silane modified polyurethane, maleic anhydride modified colloid and a solvent; the maleic anhydride modified polyurethane is obtained by reaction of raw materials including polyol, maleic anhydride, isocyanate and a catalyst; the silane modified polyurethane is obtained by reaction of raw materials including polyol, a silane coupling agent, isocyanate and a catalyst; the colloid is selected from one or a combination of more of petroleum resin, asphalt, rosin resin, terpene resin, butadiene-styrene rubber and butyl rubber; the maleic anhydride modified colloid is obtained by reacting raw materials including maleic anhydride, colloid and an initiator. The interlayer separant can isolate migration of auxiliaries such as a plasticizer in a traditional polyurethane coating and improve the compatibility and bonding performance of the traditional polyurethane coating and an asphalt coiled material.

The present invention discloses a self-rotating ultra / micro gravity-micro interface synergistic enhanced catalytic hydrogenation device for petroleum resin and its usage method. The reaction device includes: a cylindrical heat exchanger, which is provided with a first petroleum resin solution inlet, a material outlet, a second petroleum resin solution inlet, and a hydrogen inlet; a coil reactor, which includes a coil, the coil is in a cylindrical spiral shape, and the coil is located inside the cylindrical heat exchanger; the left and right ends of the coil are respectively communicated with the first petroleum resin solution inlet and the material outlet; the coil is provided with a first material port communicated with the second petroleum resin solution inlet and a second material port communicated with the hydrogen inlet; a preheater, which is communicated with the first petroleum resin solution inlet and the second petroleum resin solution inlet; a first fluid conveyor; a second fluid conveyor; and the usage method of the reaction device. By adopting the reaction device of the present invention, it has a simple structure and reliable operation, and can achieve the industrial production goals of high efficiency, low energy consumption and low investment.

The application discloses an electrolyte-resistant double-sided adhesive tape with an acrylic ultrathin substrate, which comprises, in sequence, a pressure-sensitive adhesive layer, a substrate layer and a hot melt adhesive layer; the substrate layer has a thickness of 0.2-1 microns; the pressure-sensitive adhesive layer has a thickness of 3.5-6.5 microns and comprises an alpha-olefin polymer, a modified polyolefin, a styrene block copolymer, a petroleum resin and a viscosity regulator; and the hot melt adhesive layer has a thickness of 3.5-6.5 microns and comprises an alpha-olefin polymer, a modified polyolefin, a styrene block copolymer and a petroleum resin. The application further provides a preparation method of the electrolyte-resistant double-sided multilayer adhesive tape with the ultrathin substrate, which comprises, in sequence, hot melt adhesive layer coating, substrate layer coating and pressure-sensitive adhesive layer coating. The multilayer adhesive tape has a relatively thin overall thickness, saves space for a battery and improves the energy density of the battery, has excellent bonding performance, electrolyte resistance and flexibility, can improve the drop resistance of the battery and ensures long-term safe use of the battery.

The invention relates to the technical field of sound insulation cotton, in particular to flame-retardant sound insulation cotton for household appliances and a production method. Comprising a fiber layer and a waterproof layer arranged on the fiber layer, the fiber layer is prepared from the following components in parts by weight: 30 to 40 parts of modified polyurethane fiber, 40 to 50 parts of glass fiber, 8 to 10 parts of adhesive, 5 to 10 parts of stearyl alcohol, 3 to 5 parts of 3-aminopropyltriethoxysilane and 15 to 20 parts of water; the waterproof layer is prepared from the following components: 20 to 30 parts of acrylate, 5 to 10 parts of petroleum resin, 1 to 5 parts of perfluorooctyltriethoxysilane, 6 to 10 parts of polyethylene glycol, 3 to 5 parts of nano graphene and 30 to 40 parts of water. According to the flame-retardant sound-insulation cotton, the porous fiber layer is prepared by mixing the modified polyurethane fibers and the glass fibers, so that sound diffusion is hindered, and the modified polyurethane fibers have good flame retardance, so that spontaneous combustion of the flame-retardant sound-insulation cotton due to high temperature can be effectively avoided.

The invention relates to the technical field of C9 petroleum resins, and particularly discloses a preparation method of a light-color C9 petroleum resin, which comprises the following steps: pretreating an ethylene cracking byproduct C9 fraction, introducing the pretreated raw material into an adsorption bed filled with an adsorbent, carrying out impurity removal treatment, removing impurities, and drying to obtain the light-color C9 petroleum resin. Mixing the pretreated raw material, a diluent and a catalyst to react to obtain a polymerization product, uniformly mixing the polymerization product with cyclohexane, activating a hydrogenation catalyst, stirring and mixing, carrying out hydrogenation reaction, and rectifying after the reaction is finished to obtain the light-color C9 petroleum resin. According to the light-color C9 petroleum resin, the C9 fraction is subjected to pretreatment, adsorption impurity removal, concerted catalytic polymerization and hydrogenation modification, green and high-performance production of the light-color C9 petroleum resin is achieved, and the light-color C9 petroleum resin has excellent weather resistance and thermal stability, is low in chromaticity and is suitable for the high-end fields of food packaging adhesives, medical catheter coatings and the like.

The application belongs to the technical field of precision casting, and particularly relates to a high-viscosity and high-strength precision casting adhesive wax and a preparation method thereof. The adhesive wax comprises the following components: 30-40 parts of paraffin wax, 16-24 parts of microcrystalline wax, 25-30 parts of petroleum resin, 8-14 parts of rosin resin, 5-10 parts of EVA, 2-5 parts of LDPE and 0.1-2 parts of additives; wherein the LDPE is composed of two kinds of LDPE with different melt indexes. By introducing the petroleum resin, rosin resin, ethylene-vinyl acetate copolymer (EVA) and low-density polyethylene (LDPE) into the paraffin wax and microcrystalline wax base system, and controlling the proportion between the resin system and the polyolefin reinforcing system, the adhesive wax has high viscosity and hardness at 100 DEG C, and the bending strength is improved. Thus, the comprehensive performance of the adhesive wax is achieved, i.e., the adhesive wax is not easy to sag at high temperature, is not easy to be pressed at room temperature, and is not easy to crack under stress.

To provide a toner excellent in low-temperature fixability and capable of achieving both suppression of filming in a high-temperature and high-humidity environment and releasability during fixing.SOLUTION: The toner includes toner particles satisfying the following conditions A1 and A2. A1: A total area of the releasing agent domains in the cross sections of the toner particles is 5% or less of an area of the cross sections of the toner particles. A2: in the cross section of the toner particles, there are release agent domains having a true-circle equivalent diameter calculated from a release agent domain perimeter of 0.2 μm or more and 0.8 μm or less and a circularity defined by the following formula (1) of 0.8 or less.SELECTED DRAWING: None