65 results about "O-Cresol" patented technology

The invention provides a preparation method of an easy-to-grind epoxy functional film and a wafer-level chip packaging structure, and relates to the technical field of chip packaging, the easy-to-grind epoxy functional film comprises the following components by mass: 10-15 parts of phenoxy resin, 10-15 parts of o-cresol novolac epoxy resin, 1-4 parts of carboxyl-terminated nitrile rubber, 15-20 parts of a latent curing agent, and 1-3 parts of an accelerator. 50-52 parts of angular silica powder and 2 parts of carbon black; wherein the molecular weight of the phenoxy resin is 30000 to 35000; the phenoxy resin and the o-cresol novolac epoxy resin are used as matrix resin, the angular silica powder is used as the filler, and the carboxyl-terminated nitrile rubber, the latent curing agent and the accelerant are combined, so that the grinding efficiency of the epoxy functional film is improved, the epoxy functional film meets the working requirements of an automatic film sticking machine and a grinding machine, and the production efficiency is improved.

The invention discloses a method for preparing anisole by taking dimethyl carbonate as a methylation reagent, a ternary concerted catalytic system is created for the first time to break through temperature limitation, phenol is efficiently activated by [BMIM] OH to generate high-activity phenoxy anions through a composite catalytic design of an alkaline ionic liquid / quaternary ammonium salt / nano metal oxide, the quaternary ammonium salt executes phase transfer and reaction path switching, and the anisole is prepared by taking dimethyl carbonate as a methylation reagent. The nano metal oxide has the effects of balance regulation and structural protection, and the conversion rate of phenol is gt according to the mass ratio of phenol to dimethyl carbonate to basic ionic liquid to quaternary ammonium salt compound to nano metal oxide being 94: (99-117): (2.82-7.52): (0.94-4.7): (0.47-3.76); the selectivity of anisole is gt; the method has the advantages that the concentration is 99%, decomposition of DMC and generation of by-products such as o-cresol are inhibited from the source, a self-settling separation-circulation method subverts a catalyst recovery mode, the by-products are directionally inhibited, the separation process is simplified, and the product can reach gt through single washing and reduced pressure distillation; and high-energy-consumption multi-tower rectification for substances with approximate boiling points in the traditional method is omitted, so that the economic benefit is greatly improved.

The invention relates to the technical field of catalytic material synthesis, and discloses a preparation method of a modified tin-titanium-silicon molecular sieve catalyst, which comprises the following steps: S1, mixing a silicon source, a titanium source, a tin source, an alkali source, a template agent, a surfactant and water to obtain a first mixture; s2, performing hydrothermal reaction on the first mixture in the step S1, and washing, drying and roasting an obtained second mixture to obtain tin-titanium-silicon molecular sieve powder; and S3, mixing and contacting the tin-titanium-silicon molecular sieve powder obtained in the step S2 with an organic solution of organosiloxane, and then drying to obtain the modified tin-titanium-silicon molecular sieve catalyst. According to the modified tin-titanium-silicon molecular sieve catalyst provided by the invention, a catalytic activity center is mainly positioned in a molecular sieve pore channel, and when the catalyst is used for catalyzing a reaction for preparing cresol through toluene hydroxylation, effective shape-selective catalysis can be realized, so that the selectivity of o-cresol and p-cresol can be improved, and particularly the selectivity of the o-cresol can be improved.

The invention relates to the field of organic chemical synthesis, and discloses a method for preparing homo-2-methyl-4-chloropropionic acid. Comprising the following steps: reacting chiral 2-chloropropionic acid with a liquid caustic soda solution to generate sodium 2-chloropropionate, reacting p-chloro-o-cresol with liquid caustic soda to generate sodium p-chloro-o-cresol, carrying out nucleophilic substitution reaction to generate a precursor of 2-methyl-4-chloropropionic acid, carrying out acidification reaction to generate 2-methyl-4-chloropropionic acid, cooling, crystallizing, purifying, extracting with a solvent and the like. By controlling reaction conditions, such as temperature, pH value, reaction time and the like, a high-yield and high-purity product is ensured, and the optical loss is less than 1.5%. The method is efficient, environmentally friendly and suitable for large-scale industrial production, and high quality and stability of 2-methyl-4-chloropropionic acid can be guaranteed.

The invention discloses a high-temperature-resistant epoxy molding compound for electronic packaging and a preparation method thereof, and relates to the field of electronic packaging materials. The invention aims to solve the problem that the epoxy molding compound prepared in the prior art is poor in high temperature resistance and cannot meet the higher working temperature requirement of a new generation of semiconductors. The invention discloses a high-temperature-resistant epoxy molding compound for electronic packaging. The high-temperature-resistant epoxy molding compound is prepared from the following components in percentage by mass: 10%-15% of o-cresol formaldehyde epoxy resin, 12%-18% of dicyclopentadiene cyanate ester, 0.1%-0.5% of copper acetylacetonate, 70%-80% of inorganic filler, 1%-2% of a coupling agent, 0.5%-1% of a release agent and 0.1%-0.5% of carbon black. A triazine ring structure with a high cross-linking characteristic is introduced into a resin matrix, so that the heat resistance is excellent; the prepared high-temperature-resistant epoxy molding compound for electronic packaging has the characteristics of high heat resistance, low dielectric constant, high breakdown field strength, high mechanical strength and the like, and is applied to the field of electronic packaging.

The application belongs to the field of functional material preparation and catalysis technology, and discloses a preparation method of an iron oxide catalyst, which comprises the following steps: dissolving an iron precursor and a promoter in water respectively to form uniform aqueous solutions; mixing the two aqueous solution systems and stirring to make them uniformly mixed; continuously heating and stirring the mixed aqueous solution to evaporate water; drying the gel-like substance, and then calcining at a specified temperature for 5h to obtain the iron oxide catalyst. The method of the application obtains the iron oxide catalyst with high catalytic performance by calcining the mixture of the promoter and the iron precursor, and uses the iron oxide catalyst to catalyze the methylation reaction of phenol and methanol. The application improves the conversion rate and selectivity of the reaction by improving mass transfer, increasing the specific surface area and the content of acid sites, and has the advantages of simple operation, good repeatability, low cost, phenol conversion rate of 94.4%, product 2,6-dimethylphenol selectivity of 50.1%, and o-cresol selectivity of 49.2%.

The invention discloses a medical rubber sealing element with a self-lubricating function and a preparation method of the medical rubber sealing element, and relates to the field of manufacturing of medical rubber sealing elements. The medical rubber sealing element with the self-lubricating function prepared by the invention comprises a rubber compound, a vulcanizing agent and a self-lubricating agent, the rubber compound comprises cross-linked butyl rubber, chlorinated butyl rubber and chlorinated polyethylene rubber; the self-lubricating agent is modified fluorine-containing silicone oil, the cross-linked butyl rubber is prepared from acrylic hyperbranched siloxane and butyl rubber through a reaction, and acrylic hyperbranched siloxane is prepared from o-cresol epoxy acrylic acid, carboxyl-terminated poly (diethylene glycol adipate) and amino-terminated hyperbranched siloxane through a reaction; the modified fluorine-containing silicone oil is prepared by reacting fluorine-containing silane with dimethyl silicone oil and then crosslinking with triallyl isocyanurate, and the fluorine-containing silane is prepared by copolymerizing tetrafluoroethylene and perfluorovinyl ether and then reacting with a silane coupling agent, so that the lubricating property, high temperature resistance and lubricity of the medical rubber sealing element are improved.

This invention discloses an ultrathin flame-retardant halogen-free epoxy fiberglass sheet and its preparation method, belonging to the technical field of epoxy fiberglass materials. The preparation process includes preparing a resin solution by mixing phosphorus-containing epoxy resin, bisphenol A phenolic epoxy resin, o-cresol phenolic epoxy resin, benzoxazine resin, phosphorus-containing phenolic flame-retardant curing agent, toughening agent, catalyst, coupling agent, and a mixed solvent. Composite fillers and flame-retardant synergists are added, and the mixture is dispersed at high speed and then impregnated with fiberglass cloth. After drying, a semi-cured sheet is obtained, which is then stacked and hot-pressed to obtain the finished product. Compared with existing technologies, the ultrathin fiberglass sheet obtained by this invention meets the UL94 V-0 halogen-free flame-retardant standard, has a high glass transition temperature, and maintains excellent electrical insulation performance and dimensional stability even at ultrathin thicknesses. During processing, the resin flow is uniform and there is no bubble delamination. This sheet is environmentally friendly and halogen-free, with excellent comprehensive performance, and is suitable for automotive insulation, electronic packaging, and printed circuit boards.

The invention discloses a preparation method and a preparation system of p-chloro-o-cresol, and the preparation method comprises the following steps: 1) adding dichloroethane into molten o-cresol, and adding a catalyst; (2) controlling the temperature to be 5-15 DEG C, and adding sulfuryl chloride into the material in the step (1) at different feeding speeds according to the reaction time and the reaction stage; and (3) after the reaction is finished, rectifying and purifying liquid of reaction materials to obtain the p-chloro-o-cresol. According to the present invention, the process is simple, the reaction condition is mild, the reaction is controlled, the selectivity is high, the ortho-cresol is subjected to preferential para-position chlorination, the reaction is sufficient, the selectivity is high, the polychlorination phenomenon is avoided, the phenol content and the isomer content in the crude product are low, the yield is high, and the large-scale production is easily achieved.

The application relates to a preparation method and application of a Ni / C catalyst, in particular to application of the Ni / C catalyst in hydrogenation of o-cresol into o-methylcyclohexanol, and belongs to the technical field of preparation of catalytic hydrogenation catalysts. The Ni / C catalyst used in the reaction system is obtained through one-step pyrolysis by taking Ni-BTC as a self-sacrificial template. The preparation raw material of the Ni / C catalyst is extensive, the price is low, the whole catalyst preparation process is simple, convenient and controllable, and the Ni / C catalyst is suitable for large-scale preparation. The Ni / C catalyst with high catalytic activity and selectivity is in-situ formed through pyrolysis at a lower temperature, the catalyst stability is very good, no obvious deactivation phenomenon is generated after 7 cycles of reaction, and the catalyst is easy to be separated through magnetic adsorption after the catalytic reaction is completed due to the magnetism of the catalyst, and the catalyst is convenient to recycle.

The invention discloses a preparation process of industrial-grade o-methylhydroquinone, and relates to the technical field of production of o-methylhydroquinone, o-cresol, a supported palladium-copper bimetallic catalyst, potassium carbonate and a solvent are added into a reaction kettle, oxygen is introduced for a reaction, a reaction liquid is cooled, hydrogenation reduction is performed, crystallization is performed, and an o-methylhydroquinone product is obtained. The method is high in yield and environment-friendly, and the production cost is reduced.

The present application relates to the technical field of epoxy encapsulation material, and particularly relates to a low-stress and low-hygroscopicity epoxy resin composition and application thereof. The low-stress and low-hygroscopicity epoxy resin composition is prepared from the following components: epoxy resin, phenolic resin, inorganic filler, colorant, release agent, curing accelerator, ion capture agent and coupling agent; the epoxy resin is composed of o-cresol formaldehyde type epoxy resin and branched diphenyl sulfide epoxy resin, wherein the branched diphenyl sulfide epoxy resin is obtained by crosslinking 4,4'-dihydroxydiphenyl sulfide, inositol and epichlorohydrin; by adding the branched diphenyl sulfide epoxy resin in the epoxy resin composition, the mechanical properties and water absorption of the epoxy resin composition are significantly improved, thereby improving the stability and reliability of the product, and the epoxy resin composition can be used for packaging of small and thin integrated circuits.

The present invention discloses a method for producing methylphenol by gas-phase alkylation of phenol and methanol in a fixed-bed adiabatic reactor. Phenol and methanol are separately vaporized, mixed in a certain mass ratio, and then introduced into a fixed-bed adiabatic reactor containing a catalyst. The phenol and methanol undergo a gas-phase alkylation reaction to produce o-cresol, m-cresol, p-cresol, and some xylenols. By controlling the mass ratio of phenol and methanol, the purpose of controlling the adiabatic temperature rise is achieved. The products generated by the reaction are subjected to rectification and separation to obtain a mixture of o-cresol, m-cresol, and p-cresol, as well as products such as xylenol. Compared with the existing technology, the method for producing methylphenol by gas-phase alkylation of phenol and methanol in a fixed-bed adiabatic reactor provided by the present invention has the advantages of a simple reaction process, high catalyst loading efficiency, and no addition of inert circulating materials. It also achieves the advantages of reducing equipment investment, energy consumption, and wastewater.

The invention provides a positive photosensitive resin composition, a resist film, a resist underlayer film, and a resist permanent film. The invention provides a positive photosensitive resin composition which is capable of obtaining a resist film with excellent developability, chemical resistance and heat resistance, and has good storage stability and thick film forming property. A positive photosensitive resin composition containing the following components (A) to (D): (A) a novolac phenolic resin having an acetal group-based protecting group, containing a phenol structural unit (a1) derived from m-cresol and / or o-cresol and an aldehyde structural unit (a2) derived from salicylaldehyde / (B) a polyhydroxystyrene having an acid-dissociable protecting group / (C) a photoacid generator / (D) a solvent.

This invention relates to a catalyst for preparing ortho-methylated products of phenol. The catalyst is a composite oxide containing indium oxide, with the composition In₂O₃ / X, where X is a promoter. The promoter is selected from one or more of ZrO₂, HfO₂, ZnO, Cr₂O₃, CeO₂, and MgO, and the amount of the promoter metal is 0.01 to 100 times the molar amount of indium. This invention also discloses the application of this catalyst in the reaction of carbon dioxide hydrogenation coupled with phenol methylation to prepare o-cresol and 2,6-dimethylphenol. Compared with traditional catalytic methods, the catalyst of this invention has low energy consumption, long service life, and can highly selectively convert phenol to o-cresol and 2,6-dimethylphenol with almost no byproduct formation.

The invention discloses a phenol separation coupling catalysis purification method, and relates to the technical field of fine chemical separation and purification. According to the method, a metal oxide modified H-ZSM-5 molecular sieve is used as a catalyst, a coupling reaction and a separation process are carried out in a catalytic rectifying tower, and two core processes are synchronously completed: 1, impurities such as phenol and o-cresol in raw materials are subjected to a targeted O-alkylation reaction with methanol, and the impurities difficult to separate are efficiently converted into an alkylate easy to rectify; and 2, precise fractionation is synchronously realized, heavy ether products are extracted and removed from a side line, and target products mainly comprising high-purity 2, 6-xylenol and 2, 4-xylenol are obtained in a tower kettle. Through integrated design of targeted conversion and synchronous separation, key impurities are removed with high selectivity, the process is simplified, equipment investment and energy consumption are reduced, non-target side reactions are avoided, and high selectivity, high yield, process economy and product quality of target xylenol are considered.

The invention belongs to the technical field of organic synthesis, and particularly relates to fludioxonil and a synthesis method thereof, and the synthesis method of fludioxonil comprises the following steps: synthesizing 3-methyl salicylaldehyde by using o-cresol; the method comprises the following steps: oxidizing 3-methyl salicylaldehyde into 3-methyl catechol; 3-methyl catechol is used for synthesizing methyl benzodioxole; chloridizing methyl benzodioxole to obtain a first intermediate; performing fluorine-chlorine exchange on the first intermediate to obtain a second intermediate; preparing a reaction solution by using the second intermediate, and performing electro-catalysis on the reaction solution to obtain a third intermediate; synthesizing a cinnamate intermediate by using the third intermediate; and synthesizing fludioxonil by using the cinnamate intermediate. According to the synthesis method, butyl lithium is not used as a catalyst, synthesis conditions are mild and easy to control, the product yield and purity are high, and the whole synthesis process is clean and safe.

The application discloses a catalyst for synthesizing 2,6-dimethylphenol and a preparation method thereof, and relates to the technical field of organic synthesis catalysis. The catalyst comprises a composite catalytic system and an active component loaded in the composite catalytic system. The composite catalytic system is a mixed filler of cerium modified molecular sieves and molecularly imprinted polymers. The active component is a combination of iron salt and magnesium salt. The catalyst for synthesizing 2,6-dimethylphenol and the preparation method thereof can greatly improve the yield of 2,6-dimethylphenol through synergistic catalysis of the iron salt and the magnesium salt, shape selection and screening of the cerium modified molecular sieves and synergistic effect of the molecularly imprinted polymers, and is significantly superior to traditional catalysts. The selectivity of 2,6-dimethylphenol is significantly improved through the shape selection of the cerium modified molecular sieves and the selective adsorption of the molecularly imprinted polymers on o-cresol.

The invention relates to high-performance modified o-cresol formaldehyde resin as well as a preparation method and application thereof. The preparation method adopts a step-by-step polymerization and molecular design strategy, takes organic acid as a catalyst, performs controllable polycondensation by adding formaldehyde in batches and introducing a molecular weight regulator (such as phenol and p-tert-butylphenol), and finally stabilizes the tail end of a molecular chain by adopting an end capping technology. The method successfully synthesizes the modified o-cresol formaldehyde resin with high ortho-position structure content and narrow molecular weight distribution (the molecular weight distribution index PDI is less than or equal to 2.0). When epoxidation is carried out by using the epoxy resin as an intermediate, the reaction efficiency is high, side reactions are few, and the obtained epoxy resin shows the excellent characteristics of high epoxy value and low hydrolyzed chlorine. The finally cured product shows higher glass transition temperature, lower water absorption, improved toughness and excellent dielectric properties, and comprehensively meets the harsh requirements of high-end electronic packaging materials, copper-clad plates and high-performance composite materials on heat resistance, reliability and electrical insulation.

The invention discloses a high-temperature-resistant insulating material for a new energy battery and a preparation method of the high-temperature-resistant insulating material, and relates to the technical field of high polymer materials. The method comprises the following steps: firstly, carrying out phosphorus modification on o-cresol formaldehyde epoxy resin and DOPO, then reacting with KH-560 to prepare an active compatibilizer, and powdering; then carrying out surface passivation, silicon dioxide coating, calcination and titanate coupling treatment on aluminum nitride to obtain an AlN-coated SiO2 composite filler; then carrying out surface modification on the filler through aminated hyperbranched polysiloxane and nano boron nitride to construct an interface buffer layer; finally, polyetherimide, an active compatibilizer, the modified filler and an antioxidant are blended, extruded and subjected to heat treatment. According to the method, through multi-scale synergistic modification, the high-temperature stability and long-term heat-resistant cycle performance of the material are remarkably improved, and the method is suitable for the field of new energy battery insulation.

The invention discloses an epoxy resin composition for an LNG (Liquefied Natural Gas) storage tank supporting seat and a preparation method thereof, and the epoxy resin composition is prepared from the following raw materials in parts by weight: 40 parts of bisphenol A epoxy resin, 4-15 parts of tetraglycidyl diaminodiphenyl methane, 7-22 parts of o-cresol formaldehyde epoxy resin, 4-10 parts of a latent curing agent, 0.2-1 part of an accelerant, 1.5-5 parts of hollow light filler, 0.15-0.5 part of a coupling agent and 0.5-5 parts of a toughening agent. And 1.5 to 3 parts of a surfactant. The epoxy resin composition disclosed by the invention has relatively high compression strength, bending strength and impact strength and relatively low heat conductivity coefficient at room temperature and minus 163 DEG C, can resist the ultimate temperature of 300 DEG C or above within 10 minutes, and is an excellent polymer composite material for manufacturing the LNG storage tank supporting seat.

The application provides a preparation method of o-sec-butyloxytoluene, comprising the following steps: performing catalytic reaction on o-cresol and sec-butanol under the action of a catalyst to obtain o-sec-butyloxytoluene; the catalyst comprises a carrier and at least two metal elements loaded on the carrier; the carrier comprises microporous molecular sieve and mesoporous molecular sieve. The o-sec-butyloxytoluene can be effectively prepared by using the preparation method, and the environment is friendly.

The invention relates to the field of cresol synthesis, in particular to a method for synthesizing o-cresol and / or p-cresol by adopting a micro-channel reactor. The method comprises the steps that catalytic liquid, methylbenzene and an H2O2 aqueous solution are introduced into a microchannel reactor to be subjected to a contact reaction, reaction effluent is obtained, o-cresol and / or p-cresol are / is separated from the reaction effluent, and the catalytic liquid comprises a catalyst and a solvent. The method provided by the invention has the advantages of high selectivity and total yield of o-cresol and p-cresol, safety, environmental protection and simple process.

The invention discloses a method for synthesizing an anisole substance by using cresol phenol oil. According to the method, the basic catalyst, the etherification reagent and the phenol oil fraction (196-208 DEG C) rich in o-cresol, m-cresol and p-cresol react, and the boiling point of the obtained substances such as methyl benzyl ether homologues is lower than that of the cresol dephenolized phenol oil, so that phenol derivatives can be separated from the phenol oil in the cresol phenol oil fraction through layering or direct rectification; and meanwhile, part of methyl anisole homologues are separated, and dephenolized carbolic oil is fed for hydrogenation, so that the production cost is reduced.

The invention provides an electrochemical reactor and a synthesis method of o-cresol. The electrochemical reactor comprises an anode, a cathode and a reaction layer, the material of the anode is M-LDH (at) C; the material of the cathode is S-rGO / CeO2; wherein M represents a composite metal and comprises an alloy formed by any two of the following metal elements: nickel, iron, zinc, manganese, cobalt, palladium, platinum or ruthenium. The method can solve the problems of low synthesis efficiency and low product selectivity of phenol electrochemical alkylation in the prior art, and is suitable for the field of electrochemical catalysis.

The invention provides corrosion-resistant high-power-density high-temperature-resistant ceramic slurry and a preparation method thereof, and belongs to the field of inorganic non-metallic materials. The invention provides corrosion-resistant high-power-density high-temperature-resistant ceramic slurry. The corrosion-resistant high-power-density high-temperature-resistant ceramic slurry is prepared from the following raw materials in parts by weight: 15-25 parts of reduced graphene oxide, 45-50 parts of o-cresol formaldehyde epoxy resin, 6-8 parts of a curing agent, 2-4 parts of a dispersing agent, 3-5 parts of a silane coupling agent, 20-25 parts of a solvent and 4-6 parts of functional filler. The volume resistivity of the paste is 1 * 10 <-3 >-5 * 10 <-3 > omega.cm, the power density is greater than or equal to 10W / cm < 2 >, long-term stable heat tracing at 300 DEG C is realized, no obvious corrosion is caused in a 1000h salt spray test, and the adhesive force and the thermal cycling stability are excellent.

This invention discloses a low-warpage solder resist ink material, its preparation method, and its application, belonging to the field of ink material preparation technology. It addresses the technical problem that the anti-shrinkage and anti-warpage properties of existing ink materials need further improvement. Specifically, it comprises the following components by weight: 30-50 parts alkali-soluble modified resin, 15-20 parts shrinkage-modified filler, 2-5 parts photoinitiator, 0.5-3 parts pigment, 1-3 parts leveling agent, and 15-25 parts solvent. This invention involves preparing negative thermal expansion nano-zirconium tungstate, coating it with polydopamine, grafting photosensitive double bonds to obtain an anti-shrinkage filler, esterifying o-cresylaldehyde epoxy resin with acrylate, and then modifying it with a dibasic anhydride to obtain an internally plasticized resin. Finally, the components are premixed under yellow light and water-cooled three-roll milling to obtain a low-warpage solder resist ink, which not only improves the anti-shrinkage and anti-warpage properties of the ink material but also enhances its mechanical properties.

The present invention belongs to the field of cable materials, and particularly relates to a semi-conductive aluminum-plastic composite tape for cables and a preparation method thereof. The adhesive layer in the present invention comprises polybutadiene resin, o-cresol novolac epoxy resin, tertiary amine, methylhexahydrophthalic anhydride, and tert-butylcatechol. The preparation method of the aluminum-plastic composite tape in the present invention obtains the adhesive layer by mixing and stirring raw materials, unrolls the aluminum foil layer and the plastic film layer through a laminator with the aluminum foil layer above the plastic film layer; stirs the adhesive layer through a rotating assembly and applies the adhesive on the plastic film layer through a coating assembly and a blowing assembly, and bonds and hot-presses the aluminum foil layer with the plastic film layer and the adhesive layer through a blowing assembly to obtain an initial composite tape; dries the initial composite tape by heating to obtain the final aluminum-plastic composite tape, improving the quality of the aluminum-plastic composite bag and preventing situations such as glue overflow.

The present application relates to the technical fields of semiconductor packaging injection molding, in particular to a low-temperature fast-curing epoxy resin composition for injection molding and a preparation method thereof, which comprises at least o-cresol formaldehyde epoxy resin, dicyclopentadiene phenol epoxy resin, phenol-aralkyl curing agent, imidazole curing agent, coupling agent, release agent, colorant and silicon dioxide. By optimizing the compound selection of epoxy resin and curing agent, the provided epoxy resin composition has lower packaging injection molding temperature and shorter packaging injection molding time by using o-cresol formaldehyde epoxy resin, dicyclopentadiene phenol epoxy resin, phenol-aralkyl curing agent and imidazole curing agent through low-temperature mixing process, effectively meeting the new demands of the semiconductor packaging industry.

The present invention relates to the technical field of injection molding in semiconductor packaging, in particular to an epoxy resin composition capable of low-temperature rapid curing and injection molding, and a preparation method therefor. Said epoxy resin composition at least comprises an o-cresol formaldehyde epoxy resin, a dicyclopentadiene phenolic epoxy resin, a phenol-aralkyl curing agent, an imidazole curing agent, a coupling agent, a release agent, a coloring agent and silicon dioxide. By means of optimization of the selection in compounding epoxy resins and curing agents, the combined use of the o-cresol formaldehyde epoxy resin and dicyclopentadiene phenolic epoxy resin as well as the phenol-aralkyl curing agent and the imidazole curing agent, and a low-temperature mixing process enable the provided epoxy resin composition to have a low packaging injection molding temperature and short packaging injection molding time, thereby effectively satisfying new demands in the semiconductor packaging industry.