285 results about "Cyclopentadiene" patented technology

The invention provides a preparation method and application of an asymmetric dicyclopentadienyl dialkoxy zirconium compound, and the preparation method comprises the following steps: (1) mixing a solvent with ZrCl4 and sodium cyclopentadienyl CpNa, and carrying out a reaction to obtain CpZrCl3; (2) the CpZrCl3 obtained in the step (1) and R1 substituted sodium cyclopentadienyl R1CpNa are subjected to a mixed reaction, and (R1Cp) CpZrCl2 is obtained; and (3) mixing the (R1Cp) CpZrCl2 obtained in the step (2) with alkoxy sodium salt R2Na, and carrying out a reaction so as to obtain the asymmetric dicyclopentadiene dialkoxy zirconium compound. According to the method, the substitution reaction of three sodium salts is used for replacing the ligand replacement reaction in the prior art, so that the reaction steps are shortened, the use of unnecessary raw materials is avoided, the production cost is reduced, and the obtained target product is high in yield and high in purity.

The invention discloses a packaging material as well as a preparation method and application thereof. The packaging material comprises the following components in parts by mass: 40-85 parts of matrix resin, 5-30 parts of phase change PCM particles, 3-20 parts of self-repairing microcapsules, 1-8 parts of an interface compatilizer and 10-20 parts of a heat-conducting network reinforcing material, the melting point of the phase change PCM particles is not more than 80 DEG C; a core layer of the self-repairing microcapsule comprises dicyclopentadiene and a ruthenium catalyst, and a shell layer of the self-repairing microcapsule comprises polyurea or polyurethane; the PCBA packaging material with the intelligent response function is formed by combining the low-melting-point phase-change PCM particles with the self-repairing microcapsule system, when the PCBA temperature is too high, the low-melting-point phase-change PCM particles are molten, junction temperature suddenly rising is restrained through melting heat absorption, meanwhile, the adjacent microcapsules are triggered to be broken through volume expansion, DCPD monomers are released and subjected to in-situ polymerization under the action of a catalyst, and the PCBA packaging material with the intelligent response function is obtained. Microcracks generated by thermal stress are rapidly repaired, and the heat dissipation stability and the electrical insulation reliability of the material in long-term thermal circulation are remarkably improved.

The present invention provides a method for manufacturing an adhesive member, comprising the steps of applying an ultraviolet-curable silicone composition containing (A) an organopolysiloxane containing an unsaturated group, (B) an organohydrogenpolysiloxane, and (C) an ultraviolet-activated hydrosilylated platinum catalyst having a cyclopentadienyl group to which a condensed aromatic hydrocarbon group is bonded as a ligand, to a first substrate layer, and including in any order: (i) bonding the first substrate layer to which the ultraviolet-curable silicone composition has been applied to a second substrate layer via a layer of ultraviolet-curable silicone composition; (ii) depressurizing the ultraviolet-curable silicone composition applied to the first substrate layer under a pressure below atmospheric pressure; and (iii) irradiating the ultraviolet-curable silicone composition applied to the first substrate layer with ultraviolet light. The invention also provides an adhesive made of a silicone composition with excellent curability, and an adhesive member with high adhesiveness and high reliability as a component.

A method of rapidly forming an elastomer with tunable properties is described herein. The method includes preparing a monomer solution comprising a catalyst and one or more monomers including 1,5-cyclooctadiene (COD). The one or more monomers may further include dicyclopentadiene (DCPD), and each of the COD and the DCPD may be present in the monomer solution at a predetermined volume percentage. A region of the monomer solution is activated to initiate an exothermic polymerization reaction and generate a self-propagating polymerization front, which moves through the monomer solution and polymerizes the one or more monomers. Thus, an elastomer having predetermined properties is rapidly formed.

The application belongs to the technical field of organic compound synthesis and the field of polymer preparation, and discloses a method for directly preparing a cycloolefin copolymer from dicyclopentadiene and ethylene based on a continuous flow reactor; the continuous flow reactor is used to efficiently prepare norbornene and derivatives thereof from ethylene and dicyclopentadiene, and then the norbornene and derivatives thereof are used to prepare a cycloolefin copolymer from excessive ethylene. The application uses dicyclopentadiene and ethylene as raw materials, realizes a continuous process from the synthesis of a cycloolefin monomer to the preparation of a cycloolefin copolymer, and the cycloolefin monomer does not need to be separated and stored and can directly participate in the polymerization reaction, so that the original complicated process is effectively simplified, energy consumption is reduced, the catalyst in the polymerization stage is not easy to be deactivated even at high temperature, the catalytic efficiency is high, and a high polymer yield can be obtained in a very short time.

The application provides a polydicyclopentadiene / glass fiber felt composite material and a preparation method thereof. The method comprises the following steps: step (1): laying a glass fiber felt on a glass plate, sequentially laying a release cloth, a flow guide net and a vacuum bag, and performing vacuum pumping and pressure maintaining; step (2): pouring a cyclic olefin liquid into the vacuum bag in step (1), performing stage temperature rising and curing, and releasing a polydicyclopentadiene / glass fiber felt composite material. The cyclic olefin liquid is configured as follows: A1, uniformly mixing 100 parts by mass of DCPD and 5-20 parts by mass of a TCPD system to prepare a mixed solution; wherein the TCPD system comprises 10wt% of TCPD and 90wt% of DCPD; A2, dissolving 0.02-0.06 parts by mass of a Grubbs second-generation catalyst and 0.002-0.006 parts by mass of a retarder in 1-2 parts by mass of a high-boiling-point silane coupling agent, and adding the mixture into the mixed solution in step A1 to prepare a liquid. The method adopts a vacuum-assisted resin infusion molding (VARI) technology, has the characteristics of simple operation and rapid reaction, and the obtained composite material has high mechanical properties.

The invention relates to the field of photocuring adhesives, and mainly relates to a UV adhesive for wig connection and a preparation method thereof. The UV adhesive for wig connection is prepared from the following components in parts by weight: 30 to 50 parts of urethane acrylate, 45 to 70 parts of first reactive diluent, 2 to 4 parts of photoinitiator and 2 to 4 parts of fumed silica, the first active diluent is prepared from two or a mixture of more than two of acryloyl morphine, 2-acrylic acid-2-(2-phenoxy ethyoxyl) ethyl ester, dicyclopentadiene acrylate and ethylene glycol dicyclopentenyl ether methacrylate. The preparation method comprises the following steps: mixing the components, heating in a water bath, and stirring to obtain the UV adhesive for wig connection. The UV adhesive for wig connection provided by the invention is low in odor, good in durability and good in matte effect.

Catalyst systems comprising a metal-ligand complex having a structure according to Formula (I): Y and Z are independently a monodentate or bidentate ligand selected from the group consisting of (C1−C30)hydrocarbyl, (C1−C30)heterohydrocarbyl, (C6-C30)aryl, (C3-C30)heteroaryl, halogen and –H. R1, R2, R3, and R4 are independently selected from the group consisting of (C1−C30)hydrocarbyl, (C1−C30)heterohydrocarbyl, (C6-C30)aryl, (C3-C30)heteroaryl, −ORC, −Si(RC)3, −Ge(RC)3, halogen, and –H; R5, R6, R7, and R8 are independently selected from the group consisting of (C1−C30)hydrocarbyl, (C1−C30)heterohydrocarbyl, (C6-C30)aryl, (C3-C30)heteroaryl, −ORC, −Si(RC)3, −Ge(RC)3, halogen, and –H; R9 and R10 are independently selected from the group consisting of (C1−C30)hydrocarbyl, (C1−C30)heterohydrocarbyl, (C6-C30)aryl, (C3-C30)heteroaryl, −ORC, −Si(RC)3, −Ge(RC)3, halogen, and –H; and each RC is independently selected from the group consisting of (C1−C30)hydrocarbyl, (C1−C30)heterohydrocarbyl, (C6-C30)aryl, (C3-C30)heteroaryl, and –H.

The invention provides an anti-interference control method for the concentration of a main reactant in a continuous stirring reaction kettle process, belongs to the technical field of chemical process control, and solves the problem that in the chemical process of producing cyclopentanol by catalyzing electrophilic water with cyclopentadienoic acid, the concentration of the main reactant is not influenced. The technical problem that the concentration of a main reactant is difficult to track a set value without steady-state errors under the conditions of fluctuation of feeding concentration, uncertainty and external disturbance of the continuous stirring reaction kettle is solved. According to the technical scheme, the method comprises the steps of constructing a model pre-estimation compensator and an anti-interference control structure, designing a four-dimensional decision model, carrying out parameter collaborative optimization by adopting a multi-target genetic optimization algorithm, and carrying out optimal solution selection based on a TOPSIS method. Under the condition of feed concentration fluctuation, the dynamic response speed and the anti-interference capability of the system can be remarkably improved, and faster adjustment time, smaller overshoot and stronger robustness can be realized in linear and nonlinear models.

The application relates to a weather-resistant color master batch for modified polypropylene cable protection pipes, which is composed of a carrier resin, a photo-thermal stable color powder, a filler and a grafting compatibility modifier; the photo-thermal stable color powder is composed of zinc dicyclopentadiene dimethylate, orange yellow, bright red, an antioxidant, an ultraviolet absorber and a dispersant; the dicyclopentadiene in the zinc dicyclopentadiene dimethylate has heat-reversible crosslinking properties, is disdimerized during heat processing, has good processing fluidity, is re-cyclized and addition-dimerized to be crosslinked after temperature reduction, so that the decomposition of the orange yellow and the bright red caused by cable heating is reduced; meanwhile, the antioxidant and the ultraviolet absorber have a compound synergistic effect, so that the weather resistance of the color master batch can be better improved; the modified polypropylene cable protection pipe prepared by using the color master batch has the advantages of color stability, reduced processing toxicity, good processing fluidity, low price and the like, and is more suitable for power cable protection pipe use.

The application relates to a preparation method of a crosslinked polymer and belongs to the technical field of polymer preparation. The preparation method of the crosslinked polymer provided by the application comprises the following steps: (1) mixing reactant A and reactant B to perform an esterification reaction to obtain an esterification product; (2) dissolving a crosslinking agent in the obtained esterification product and standing for solidification, so that the crosslinked polymer is obtained; the reactant A is a polyether polyol containing at least three hydroxyl groups; the reactant B is 4-(cyclopenta-2,4-dien-1-ylidene) pentanoic acid; and the crosslinking agent contains a maleimide group. The application constructs a fulvene-maleimide D-A reaction system capable of being rapidly crosslinked under low-temperature conditions by end-capping fulvene at the end of a polyether polyol and then adding a crosslinking agent with a maleimide group.

The invention relates to the field of polyacrylate photoresists, in particular to a photoresist film-forming resin raw material and a preparation method thereof.The preparation method comprises the steps that cyclopentadiene is dropwise added into a mixed solution of alpha-bromomethyl acrylate and a solvent, the temperature is controlled, a reaction is conducted for 4 h, and 5-bromodicyclohept-2-ene-5-carboxylic acid methyl ester is prepared; the preparation method comprises the following steps: adding alkali into 5-bromo dicycloheptyl-2-ene-5-carboxylic acid methyl ester, and hydrolyzing at 20-30 DEG C for 2 hours to obtain a hydrolysis product; the hydrolysis product is subjected to epoxidation and hydrolysis with hydrogen peroxide under the condition of glacial acetic acid, and 1-bromine-5-hydroxy-3-oxa-tricyclic nonyl-2-ketone is obtained; according to the method, 1-bromo-5-hydroxy-3-oxa-tricyclic nonyl-2-ketone is cyanided by cuprous cyanide to prepare the 1-cyano-5-hydroxy-3-oxa-tricyclic nonyl-2-ketone monomer, and the method has the advantages that the raw materials are convenient and easy to obtain, the route is short, the reaction conditions are relatively mild, the operation safety is relatively high, the total yield is remarkably improved, and the like.

The invention relates to a method for preparing (cyclopentadienyl) tris (dimethylamino) hafnium by using nuclear magnetic control, which comprises the following steps: S1, carrying out heating reflux reaction on hafnium tetrachloride, cyclopentadiene and dimethylamine in the presence of n-butyllithium and n-hexane, and after reacting for a certain time, taking supernate to detect a nuclear magnetic hydrogen spectrum; s2, calculating the ratio a of the integral area of the characteristic peak A to the integral area of the characteristic peak B according to the nuclear magnetic hydrogen spectrum, judging whether a is in a target range or not, if a is in the target range, terminating the reaction, separating a liquid phase, distilling and collecting a crude product; and if a value is greater than the maximum value of the target range, adding cyclopentadiene into the reaction system to continue the reaction, and if a value is less than the minimum value of the target range, continuing the reaction until the ratio of the integral area of the characteristic peak A to the integral area of the characteristic peak B in the nuclear magnetic hydrogen spectrum of the reaction supernatant is within the target range, terminating the reaction, separating the liquid phase, distilling and collecting a crude product. The method can effectively improve the safety of the production process, the raw material conversion rate and the product purity.

The invention discloses a HUSY molecular sieve pretreatment method, a HUSY catalyst, a hanging type tetrahydrodicyclopentadiene preparation process and hanging type tetrahydrodicyclopentadiene prepared by the hanging type tetrahydrodicyclopentadiene preparation process. The HUSY molecular sieve pretreatment method comprises the following steps: taking an acidified HUSY molecular sieve, putting into a heating reaction device, calcining, heating to 500 DEG C at a heating rate of 5 DEG C / min, maintaining the constant temperature of 500 DEG C, reacting for 5 hours, naturally cooling to 80 DEG C, and taking out. According to the method, the yield of exo-tetrahydrodicyclopentadiene is increased by improving the pretreatment conditions of the catalyst, the temperature required by the isomerization reaction and the dosage of the catalyst.

Catalyst systems comprising a metal-ligand complex having a structure according to Formula (I): where M is a metal chosen from scandium or yttrium; X is chosen from silicon or germanium; L is a monodentate or bidentate ligand selected from the group consisting of (C1−C30) hydrocarbyl, (C1−C30) heterohydrocarbyl, (C6−C30)aryl, (C3−C30) heteroaryl, halogen and –H; and Z is a Lewis base. R1, R2, R3, and R4 are independently selected from the group consisting of (C1−C30) hydrocarbyl, (C1−C30) heterohydrocarbyl, (C6−C30)aryl, (C3−C30) heteroaryl, −ORC, −Si(RC)3, −Ge(RC)3, halogen, and –H; R5, R6, R7, and R8 are independently selected from the group consisting of (C1−C30) hydrocarbyl, (C1−C30) heterohydrocarbyl, (C6−C30)aryl, (C3−C30) heteroaryl, −ORC, −Si(RC)3, −Ge(RC)3, halogen, and –H; R9 and R10 are independently selected from the group consisting of (C1−C30)hydrocarbyl, (C1−C30) heterohydrocarbyl, (C6−C30)aryl, (C3−C30) heteroaryl, −ORC, −Si(RC)3, −Ge(RC)3, halogen, and –H; and each RC is independently selected from the group consisting of (C1−C30) hydrocarbyl, (C1−C30) heterohydrocarbyl, (C6−C30)aryl, (C3−C30) heteroaryl, and –H.

The invention discloses a synthesis method of halauxifen-methyl. The halauxifen-methyl is obtained by carrying out Suzuki coupling reaction on 4-amino-6-bromo-3-chloro-5-fluoropyridine carboxylic acid benzyl ester and 4-chloro-2-fluoro-3-methoxyphenylboronic acid, a catalytic system adopted by the Suzuki coupling reaction is a palladium catalyst, a phosphine ligand and a phase transfer catalyst; wherein the phosphine ligand is 4-(anthracene-9-yl)-3-(tert-butyl)-2, 3-dihydrobenzo [d] [1, 3] oxaphosphorus pentadiene, and the phosphine ligand is 4-(anthracene-9-yl)-3-(tert-butyl)-2, 3-dihydrobenzo [d] [1, 3] The molar use amount of the palladium catalyst is 0.1 to 0.5 mol percent of the molar use amount of the 4-amino-6-bromo-3-chloro-5-fluoropyridine benzyl formate. According to the invention, AntPhos is used as a phosphine ligand to form a catalytic system together with the palladium catalyst and the phase transfer catalyst, so that higher reaction yield and product purity can be obtained with very low dosage of the palladium catalyst, the synthesis cost of the halauxifen-methyl can be greatly reduced, the reaction condition is mild, the energy consumption is lower, and the method is suitable for industrial production.

The invention provides a production method and system of tetracyclododecene. The production method comprises the following steps: feeding a norbornene solution of dicyclopentadiene and gasified norbornene into a spray reactor, and reacting in the spray reactor to obtain a reaction product; the molar ratio of the norbornene to the dicyclopentadiene is (5-9): 1; buffering and depressurizing the reaction product to obtain reaction product liquid; and rectifying the reaction product liquid to respectively obtain norbornene and tetracyclododecene. The invention also provides a production system of tetracyclododecene. According to the production method, the spray reactor is used for reaction, so that the rate of converting the DCPD into the TCD can be remarkably improved, and the conversion rate of the DCPD and the selectivity of the TCD are improved.

The invention discloses tear-resistant bio-based resin with low heating loss as well as a preparation method and application of the tear-resistant bio-based resin, and belongs to the technical field of resin. The preparation method of the resin comprises the following steps: carrying out polymerization reaction on cyclopentadiene and derivatives thereof and a bio-based olefin monomer in the presence of a first solvent, and then adding alpha-olefin for continuous reaction to obtain a polymerization solution A; carrying out flash evaporation on the polymer liquid A to obtain a bio-based cycloolefin copolymer B; removing impurities from the bio-based cycloolefin copolymer B in the presence of a second solvent, and then reacting the bio-based cycloolefin copolymer B with bio-based carboxylic acid and a peroxide initiator to obtain a polymer solution C; and mixing the polymer solution C with organic alcohol and a surfactant, and removing unreacted monomers, an initiator decomposition product, an unreacted solvent and oligomers to obtain the tear-resistant bio-based resin. The resin prepared by the method has the advantages of low heating loss and strong tear resistance, has good dynamic performance and higher modulus at a lower acid value, and has better weather resistance than a traditional product.

The present invention addresses the problem of providing a method for producing TCD-DA having less impurities generated as by-products, by depositing materials in a reactor in a batch and performing a hydroformylation rection at a low pressure.　The method for producing tricyclodecane dialdehyde is characterized by depositing a catalyst, dicyclopentadiene, and a solvent in a reactor in a batch, increasing the pressure to 2.0-4.0 MPaG by means of a gas mixture of hydrogen and carbon monoxide, and performing a hydroformylation reaction in the gas mixture in which the molar ratio of hydrogen : carbon monoxide is 90:10 to 100:99.

The present application belongs to the technical field of semiconductors, and particularly relates to a zirconium compound, a precursor composition containing the same, a thin film and a preparation method thereof. The zirconium compound has a chemical formula shown in formula 1, wherein R1, R2, R3 and R4 are each independently selected from one of H, methyl, ethyl or propyl. In the present application, nucleophilic substitution occurs between a pyrrole alkali metal salt and zirconium tetrachloride, and then the zirconium compound containing a cyclopentadiene and a pyrrole group is formed by reacting with cyclopentadiene. Compared with (cyclopentadienyl)tris(dimethylamino)zirconium, the zirconium compound has excellent thermal stability and excellent reactivity and volatility, which is helpful to form a high-purity low-impurity and uniform thin film, and greatly improves the quality of the thin film.

The present application relates to the technical fields of organic metal compound synthesis, and discloses a production process method for synthesizing ferrocene based on one-pot method, which takes sodium, anhydrous ferrous chloride and dicyclopentadiene as raw materials, and completes the whole process of dicyclopentadiene depolymerization, sodium cyclopentadiene generation and ferrocene coordination synthesis in a non-protic solvent through gradient temperature control in one-pot method.The present application discards the disadvantages of multi-step reaction in traditional process, and does not need to prepare cyclopentadiene by pre-depolymerizing dicyclopentadiene, thus greatly simplifying the production process, reducing energy consumption and raw material loss, and achieving the product conversion rate of up to 85%, the purity of up to 99%, simple and controllable operation, adaptation to industrialized continuous production, and good economic and environmental benefits.

The invention relates to the technical field of shoe materials, in particular to shoe material sponge applied to shoes easy to wear and take off and a preparation method of the shoe material sponge. The shoe material sponge is prepared from the following raw materials in parts by weight: 70 to 80 parts of polyether polyol, 10 to 17 parts of polyester polyol, 3 to 8 parts of a chain extender, 5 to 12 parts of thiolated nano silicon dioxide, 0.3 to 0.8 part of a Grubbs catalyst, 3 to 10 parts of self-repairing microcapsules, 1 to 3 parts of an oxazolidine crosslinking agent, 1 to 2.5 parts of a foaming agent, 0.05 to 0.2 part of a catalyst, 1 to 2 parts of a foam stabilizer and 40 to 60 parts of isocyanate. The core material of the self-repairing microcapsule is dicyclopentadiene; the method has the advantage that the fatigue resistance of the sponge for the shoe material is improved.

The invention provides tri (dimethylamino) cyclopentadienyl cerium as well as a preparation method and application thereof. The tri (dimethylamino) cyclopentadienyl cerium provided by the invention combines the spatial stability of a cyclopentadienyl ligand and the high reaction activity of a dimethylamino ligand, has appropriate volatility and lower thermal decomposition temperature, and is a cerium-based precursor with great potential. The preparation method of the tri (dimethylamino) cyclopentadienyl cerium provided by the invention has a better target product yield. The cerium-based precursor provided by the invention is tris (dimethylamino) cyclopentadienyl cerium, and has a structural formula shown in the specification.

The invention discloses a preparation method of high-purity cyclopentene, and belongs to the technical field of organic synthesis. The method comprises the following steps: firstly, depolymerizing dicyclopentadiene into cyclopentadiene; mixing the obtained gaseous cyclopentadiene with hydrogen according to a ratio, sequentially passing through a first-stage fixed bed reactor and a second-stage fixed bed reactor which are connected in series, and carrying out selective hydrogenation reaction under the action of a supported palladium catalyst to generate crude cyclopentene; and finally, carrying out dimerization reaction on the crude cyclopentene in an inert atmosphere to remove residual cyclopentadiene, carrying out normal-pressure distillation purification, and collecting fractions at 43-47 DEG C to obtain high-purity cyclopentene. The two-stage fixed bed continuous hydrogenation process is adopted, the operation is simple, the reaction condition is mild, the cyclopentadiene conversion rate is high, the cyclopentene selectivity is good, the product purity can reach 99.6% or above, and the method is suitable for industrial continuous production.

The present invention provides a norbornene preparation method, which comprises that ethylene and cyclopentadiene are subjected to a reaction in an ionic liquid to prepare the norbornene. The preparation method of norbornene provided by the invention has the characteristics of lower reaction pressure and higher safety.

The invention relates to a novel process for the production of 3-difluoromethyl-1-methyl1H-pyrazole-4-carboxylic acid (9-dichloromethylene-1,2,3,4-tetrahydro-1,4-methanonaphthalen-5-yl)-amide of formula Ithat makes it possible to prepare said compound in high yields and good quality' in an economically advantageous way, which process comprises a) reacting a compound of formula II (11), wherein X is chloro or bromo, with an organometallic species in an inert atmosphere to a halobenzyne of formula Xreacting the halobenzyne of formula X so formed with cyclopentadiene to III b) reacting III in the presence of an inert solvent with an oxidant to IVc) reacting IV in the presence of a Lewis acid and a hydride source to Vd) reacting V in the presence of an oxidizing agent, a base and an inert solvent to VI e) converting VI in the presence of a triphenyl phosphane and CCI4 or CHCI3 to VII, andf2) reacting the compound of formula VIIin the presence of a solvent, a base, a copper catalyst and at least one ligand with the compound of formula IXato the compound of formula I.

Provided is a polyamide resin composition comprising a polyamide resin (A) and a phenolic compound (B), wherein the phenolic compound (B) is at least one compound selected from the group consisting of triphenolic compounds (B-1) represented by general formula (1) (wherein R1, R2, R3, R4, R5, and R6 are each independently a hydrogen atom, a halogen atom, a C1-C5 alkyl group, or a C1-C5 alkoxy group) and phenolic compounds (B-2) having a dicyclopentadiene-derived skeleton.

The invention discloses a self-repairing foam material and a preparation method thereof, and the method comprises the following steps: dispersing self-repairing microcapsules and a catalyst in a polymerization raw material solution, carrying out a polymerization reaction under certain conditions to form a polymer, and carrying out high temperature foaming on the polymer to obtain the self-repairing foam material, and dicyclopentadiene is contained in the self-repairing microcapsule. The method is adaptive to a PMI material preparation process, the problem that damage is difficult to self-repair when PMI is used as a thermosetting material can be solved, and the service life of PMI is prolonged.

This invention belongs to the field of polymer materials and relates to a method for preparing a multifunctional emulsion antioxidant and its application, specifically to an emulsion antioxidant that also absorbs ultraviolet light and its application. A multifunctional emulsion-type antioxidant comprises the following components: a phenolic primary antioxidant, wherein the phenolic primary antioxidant comprises a mixture of p-cresol and dicyclopentadiene copolymer (TH-CPL) and triethylene glycol bis[β-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate] (antioxidant 245); a thioester secondary antioxidant; a UV absorber; a light stabilizer; a nonionic surfactant; and deionized water; wherein the UV absorber is N-(ethoxycarbonylphenyl)-N'-methyl-N'-phenylformamidinium (UV-1), and the light stabilizer is a mixture of bis(1,2,2,6,6-pentamethyl-4-piperidine) sebacate and 1-methyl-8-(1,2,2,6,6-pentamethyl-4-piperidine) sebacate (292).