35 results about "Dicyclopentadiene" patented technology

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 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.

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.

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).

Rubber composition for tires, the rubber composition comprising: 100 parts by mass of a diene rubber containing a styrene-butadiene copolymer rubber having a styrene content of 30% by mass or more; 50 to 200 parts by mass of carbon black having a nitrogen adsorption surface area N2SA of 100 to 500 m2 / g and N2SA / IA, which is a ratio of the nitrogen adsorption surface area N2SA (unit: m2 / g) to an iodine adsorption number IA (unit: mg / g), of 0.90 to 1.03; 5 to 50 parts by mass of a styrolated phenol compound represented by the structural formula (1); and 20 to 90 parts by mass of a sticky resin; wherein a mixed quantity of the styrofoamed phenol compound represents 15% by mass or more based on a quantity of the sticky resin: wherein n is 2 or 3;wherein the sticky resin is one or more types selected from the group consisting of a C9 petroleum resin, a phenolic resin, a coumaron indene resin, a terpene resin, a styrene resin, an acrylic resin, a rosin resin and a dicyclopentadiene resin.

The application discloses a kind of halogen-free high-frequency copper-clad plate and its manufacturing method, belong to copper-clad plate preparation technical field, manufacturing method is as follows: fluorine-containing mercaptan grafting polybutadiene, styrene-butadiene-styrene copolymer, dicyclopentadiene phenol epoxy resin, toluene, butanone, propylene glycol monomethyl ether are added into mixing machine, after stirring and mixing, initiator, active ester curing agent, diamond-based flame-retardant filler are added, stirring and mixing 2-4h, obtain resin glue liquid;Glass cloth is placed in resin glue liquid and immersed after taking out, baking, obtain prepreg;Prepreg is laminated, the copper-clad plate obtained by the application has lower dielectric constant, better flame-retardant property, higher heat dissipation performance, lower water absorption and good mechanical processing, etc.Advantages, in the field of communication, vehicle-mounted millimeter wave radar, internet of things, automobile electronics and other fields of high multilayer high-frequency circuit board have broad application prospect.

The utility model provides a dicyclopentadiene light component removal tower which comprises a reaction tower, the reaction tower is of a cylindrical structure, the side wall of the reaction tower is of a hollow structure, a plurality of heating coils are arranged in the hollow structure, and each heating coil is provided with a heat inlet pipe and a heat discharge pipe which penetrate through the outer side wall of the reaction tower. The heat inlet pipe is communicated with a heat discharge port of the heater through a pipeline, the hollow structure is filled with heat conducting oil, a stirring assembly is rotationally arranged in the reaction tower and comprises a driving part and a stirring rod arranged on an output shaft of the driving part, and stirring blades are arranged on the outer side of the stirring rod and located in the reaction tower. According to the reaction tower, the reaction tower is designed to be of a hollow structure, so that a good heat preservation effect is achieved, materials in the reaction tower can be efficiently stirred through cooperation of the heating coil and the stirring assembly, rapid reaction of the materials is facilitated, and the raw material dehydrogenation effect and efficiency are greatly improved.

The application discloses a kind of anticorrosive coating and the method of forming anticorrosive coating, the anticorrosive coating includes the following weight parts of raw materials: N,N'-bis (acryloyl) cystamine 3~8 parts, ring sulfur resin 5~15 parts, amino propyl terminated polydimethylsiloxane 5~10 parts, dicyclopentadiene phenol epoxy resin 15~30 parts, vinyl resin 100~150 parts, silane coupling agent 2~5 parts, multifunctional curing agent 5~10 parts, epoxy curing agent 3~8 parts, initiator 0.5~2 parts, filler 30~60 parts.The anticorrosive coating of the application can dynamically repair the microdefects of anticorrosive coating, to reduce the penetration path of corrosive medium, and improve the bonding force between concrete substrate, finally realize the anticorrosion effect of improving anticorrosion coating.

This invention discloses a method for side-stream extraction of refined tetracyclododecene, comprising: using dicyclopentadiene, ethylene, and norbornene as raw materials, and toluene as solvent, conducting a Diels-Alder reaction in a batch reactor to obtain crude tetracyclododecene product; removing ethylene, norbornene, and toluene from the crude product by atmospheric distillation, and then sending it to a vacuum distillation column; in the vacuum distillation column, dicyclopentadiene and tetracyclododecene products are obtained at the top of the column, high-purity tetracyclododecene product is obtained by side-stream extraction, and heavy components are removed from the bottom of the column.

The application discloses a preparation method of an aromatic hydrocarbon modified high-softening-point hydrogenated petroleum resin, and steps are as follows: 1, a part of dicyclopentadiene monomer is mixed with a polymerization solvent, and then the temperature is increased to 130-210 DEG C, and then a mixed solution of aromatic hydrocarbon monomer and the rest of dicyclopentadiene monomer is added dropwise, when the dropwise addition is completed, the temperature of the system is 220-240 DEG C; 2, the temperature is continuously increased to 250-350 DEG C, and then heat polymerization reaction is carried out for 1-6 hours to obtain a first reaction solution; 3, the first reaction solution is reduced pressure distillation for 1-3 hours to remove the polymerization solvent and unreacted monomer, and then a basic polymer resin is obtained; 4, the basic polymer resin and a hydrogenation catalyst are added into a hydrogenation solvent, and then stirring is carried out until the mixture is uniform; 5, hydrogenation reaction is carried out for 1-6 hours to obtain a second reaction solution; 6, the second reaction solution is reduced pressure distillation for 1-3 hours to remove the hydrogenation solvent and part of oligomers, and then a hydrogenated petroleum resin is obtained. Compared with the prior art, the hydrogenated petroleum resin prepared by the application can be used as a stiffening agent in the field of BOPP films.

The application provides a metal-acid bifunctional composite catalyst and a preparation method and application thereof, and belongs to the field of catalysts. The metal-acid bifunctional composite catalyst provided by the application comprises a metal catalyst and a hydrogen type ultra-stable Y type molecular sieve catalyst; metal elements in the metal catalyst comprise Cu elements and auxiliary metal elements M; the auxiliary metal elements M comprise one or more of Zn, Cr, Zr and Al. The metal-acid bifunctional composite catalyst provided by the application can make the conversion rate of dicyclopentadiene reach 100%, and the yield of the hanging type tetrahydrodicyclopentadiene can reach more than 50%, so that the yield of the hanging type tetrahydrodicyclopentadiene is relatively high.

A heat-crosslinkable adhesive composition comprises a polymer (A) comprising at least one hydrolysable alkoxysilane group, a silylated copolymer tackifying resin (B′), a non-silylated tackifying resin (C), and a crosslinking catalyst (D). The silylated copolymer tackifying resin comprises a repeating unit (B′1) derived from a silylated olefin monomer, in particular from a silylated (meth)acrylate monomer, and one or more repeating units (B′2) derived from olefin or diolefin monomers included in a petroleum fraction obtained by cracking naphtha and chosen from a C5 fraction, a C9 fraction, dicyclopentadiene. A self-adhesive article comprises a support layer coated with a self-adhesive layer consisting of the heat-crosslinkable adhesive composition in the crosslinked state.

The present invention provides a composition and a cured layer. The composition comprises 100 parts by weight of a first monomer, 1 to 10 parts by weight of a second monomer, 10 to 30 parts by weight of a polyurethane acrylate, and 15 to 35 parts by weight of a blocked isocyanate, wherein the first monomer is a monoacrylate compound, a monomethacrylate compound, a vinyl aromatic compound, an oxetane compound, maleic anhydride, dicyclopentadiene, N-vinylpyrrolidone, N-vinylformamide, or a combination thereof; and the second monomer is an alcohol compound having at least two reactive functional groups, wherein the reactive functional groups are acrylate groups or methacrylate groups.

The application discloses a modified polyethylene plastic film material and a preparation method thereof; the raw materials of the film material include the following components in parts by weight: 100 parts of linear low-density polyethylene, 0.1 to 0.3 parts of erucamide, 2.0 to 6.0 parts of hydrogenated dicyclopentadiene alicyclic resin and 0.5 to 2.0 parts of ethylene-acrylic acid copolymer; during preparation, the components are melt-extruded into a film to construct a physical steric hindrance; a moderate amount of erucamide is migrated to the surface to provide initial slipperiness by controlling the cooling rate to construct a medium-temperature transition zone; finally, the film is shaped by physical quenching with a clamp roll, and a hydrogen bond network is formed by activating the carboxyl groups of the copolymer and the residual erucamide at low temperature to complete chemical anchoring. Through the synergy of the material components and the specific temperature field process, the excessive precipitation of the slip agent during the long-term storage of the film is effectively inhibited, and the problems of film crystallization, blooming, haze increase and surface wetting tension attenuation are solved.

This invention belongs to the field of organometallic chemistry and high-end electronic material preparation technology, specifically relating to a di(cyclopentadiene)amino-based organic hafnium precursor material, its preparation method, and its application. The di(cyclopentadiene)amino-based organic hafnium precursor material has the structure shown in formula (1). This invention creatively synthesizes a di(cyclopentadiene)amino-based organic hafnium precursor material with a novel structure. Compared to other existing hafnium-based metal precursor materials, such as cyclopentadiene tris(dimethylamino)hafnium, this di(cyclopentadiene)amino-based organic hafnium precursor material exhibits high volatility and high thermal decomposition stability, generating a higher vapor pressure at the same temperature. This accelerates film growth, increases the deposition rate, and the high thermal decomposition stability is beneficial for preparing dense films and improving the adhesion between the film and the substrate, thereby obtaining high-quality HfO2 films.

The present invention provides a composition suitable for forming a patterned film layer using an inkjet printing process and possessing excellent storage stability, wherein the resulting cured layer maintains high chemical resistance, solder resistance, and adhesion while also exhibiting excellent fold resistance. [Solution] The composition comprises 100 parts by weight of a first monomer, 1 to 10 parts by weight of a second monomer, 10 to 30 parts by weight of a urethane acrylate, and 15 to 35 parts by weight of a blocked isocyanate compound. The first monomer is a monoacrylate compound, a monomethacrylate compound, a vinyl aromatic compound, an oxetane compound, maleic anhydride, dicyclopentadiene, N-vinylpyrrolidone, N-vinylformamide, or a combination of the above. The second monomer is an alcohol compound having at least two reactive functional groups, the reactive functional groups being acrylate groups or methacrylate groups.

This invention belongs to the field of catalytic reaction engineering and relates to a method for the selective hydrogenation of dicyclopentadiene to produce cyclopentene via depolymerization. Dicyclopentadiene undergoes continuous liquid-phase depolymerization in the bottom of a reactive distillation column. A mixture of decahydronaphthalene and ethylcyclohexane in the bottom of the column serves as the heating medium, directly contacting, mixing, and transferring mass and heat with the dicyclopentadiene. The heating medium inhibits the polymerization of DCPD and CPD to form other polymers. The depolymerization product, cyclopentadiene, and the entrained dicyclopentadiene are mixed with H2 and CO2 and enter the stripping section. The dicyclopentadiene continues to depolymerize. After depolymerization, it contacts, transfers mass and heat with the cyclopentane fraction refluxed from the rectification section, and undergoes selective hydrogenation on a hydrogenation catalyst (Pd-Pt-Ag@Al2O3) packed in the reactive distillation section. The product after selective hydrogenation passes through the rectification section, and cyclopentene with a purity greater than 99.5% is collected from the top of the column. This invention can achieve high selectivity and yield of the target product, cyclopentadiene.

The application discloses a modified rubber track pattern rubber and application of a tear-resistant resin in a formula, and components of the modified rubber track pattern rubber are natural rubber, styrene-butadiene rubber, cis-butadiene rubber, modified phenol-dicyclopentadiene resin, carbon black, white carbon black, sulfur, an accelerator, a p-phenylenediamine type antioxidant, stearic acid, zinc oxide and aromatic oil; the tear-resistant resin is the modified phenol-dicyclopentadiene resin; through reasonable proportioning and under specific preparation process conditions, the rubber track pattern rubber of the application exhibits good performance, and has wide applicability and stability.

The application provides a preparation method and a preparation device of norbornene. First, ethylene is treated by spraying a solvent to form an ethylene solution, then the ethylene solution is mixed with dicyclopentadiene and enters a tower reactor, and in the tower reactor, the ethylene and the dicyclopentadiene undergo depolymerization reaction and D-A reaction to generate norbornene. The preparation method is easy to control, does not need a too complex process flow, and can effectively guarantee the yield and purity of the norbornene while reducing the production cost.

The application belongs to the technical field of thickening agent preparation, and particularly relates to a preparation method of a thickening agent for fracturing. The preparation method of the thickening agent for fracturing comprises the following steps: (1) pre-emulsification treatment of dicyclopentadiene oxyethyl acrylate; (2) preparation of an aqueous phase; (3) preparation of an initiator solution; (4) polymerization reaction; and (5) post-treatment. The preparation method of the thickening agent for fracturing comprises the following steps: acrylamide is used as a main monomer, dicyclopentadiene oxyethyl acrylate, 4-[(3-methacrylamidopropyl)dimethylammonio]butane-1-sulfonate and isobutylene amide propyl trimethyl ammonium methyl sulfate are used as functional monomers to perform random copolymerization reaction, a multi-element random copolymerization structure of "rigid temperature-resistant chain segment-amphoteric ion salt-resistant chain segment-cationic adsorption chain segment" is constructed, and the prepared thickening agent for fracturing has excellent salt resistance, high-temperature resistance and high tackifying performance.

The application relates to the technical field of active resin, in particular to an active ester resin based on an allyl-containing dicyclopentadiene phenol as raw material and a preparation method and application thereof. The active ester resin has a molecular structure as shown in formula 1, formula 1; in formula 1, R1 includes at least one of,,, and ; R2 includes and / or ; R0 has a molecular structure as shown in formula 2, formula 2; in formula 2, x includes at least one of,, and ; the polymerization degree m is 1-3; and the polymerization degree n is 1-10. Through regulation and control of the structure design, on one hand, the structure design of the active ester resin can effectively improve the heat resistance of EP and reduce the water absorption rate of EP, and on the other hand, the structure design of the active ester resin can enhance the toughness and heat resistance of BMI. At the same time, the dielectric property of the active ester resin is not only not damaged, but also can be greatly improved.

The application relates to the technical field of plastics, in particular to a fiber-containing PDCPD composite protective plate and a preparation method thereof. Dicyclopentadiene, toughened borneolene monomer, flame-retardant borneolene monomer, reinforced borneolene monomer, flame-retardant modified mesoporous silicon dioxide, Grubbs first-generation catalyst and dichloromethane are mixed to obtain a mixture. Glass fiber cloth is laid in a mold, vacuum is drawn, the mixture is poured again, and the product is obtained through heating. The product prepared by the application has good flame-retardant performance and mechanical performance, so the application has a wide application prospect in the technical field of plastics.

This invention discloses a modified bamboo-based fiber composite material and its preparation method. Specifically, it relates to a modified bamboo-based fiber composite material, characterized by comprising the following components in parts by weight: 80-100 parts modified bamboo fiber, 70-90 parts epoxy resin, and 2-5 parts curing agent. The modified bamboo fiber is prepared through the following steps: Step 1: Immersing the bamboo fiber in a 10-15% sodium hydroxide solution at 70°C for 3-6 hours, then washing with water until neutral and drying; Step 2: Immersing the bamboo fiber treated in Step 1 in an aqueous mixture containing 0.6%-1.4% Grubbs catalyst, stirring and soaking for 12-24 hours; Step 3: Mixing the dried bamboo fiber treated in Step 2 with dicyclopentadiene microcapsule powder at a mass ratio of 30-50:1 until homogeneous. The modified bamboo-based fiber composite material prepared by this invention exhibits good mechanical properties.

The application relates to a high-strength and corrosion-resistant artificial stone composition for a bathtub and application thereof, and the artificial stone composition comprises the following raw materials in mass parts: 40-50 parts of modified quartz sand, 25-30 parts of modified quartz powder, 22-25 parts of a resin matrix, 3-6 parts of a low-shrinkage additive, 0.5-3 parts of color powder, 0.5-1.5 parts of a release agent, 1-3 parts of a curing agent, 0.8-2 parts of an antifoaming agent and 0.1-0.3 parts of an accelerator; wherein the particle size of the modified quartz powder is smaller than that of the modified quartz sand; the resin matrix is an ortho phenyl type unsaturated polyester resin, a dicyclopentadiene modified unsaturated polyester and a meta phenyl / neopentyl glycol type unsaturated polyester resin. The application adopts a ternary compound resin matrix, cooperates with isocyanate silane modified quartz sand and mercapto-ammonia propyl composite modified quartz powder, realizes multi-component synergistic enhancement, and significantly improves the mechanical strength, impact resistance and corrosion resistance of the artificial stone composition for the bathtub.

This invention proposes a flexible cable material and its preparation method, comprising the following steps: first, surface modification treatment of boron nitride and graphene oxide, followed by the addition of polyethylene glycol to obtain a composite flexible reinforcing agent; premixing high-polymerization-degree polyvinyl chloride, linear low-density polyethylene, flame retardant, and processing aids, followed by melt blending of the composite flexible reinforcing agent and flexible crosslinking component to obtain a basic composite, wherein the flexible crosslinking component includes polyether segments and / or aliphatic polyester segments; adding an insulating polymer to the basic composite, followed by the addition of a dicyclopentadiene-containing compound and a catalyst, and then extruding and pelletizing to obtain the flexible cable material. This method, through the combination of the composite flexible reinforcing agent, flexible crosslinking component, insulating polymer, and the dicyclopentadiene-containing compound and catalyst, guides the material to maintain better structural and mechanical stability while possessing flexible characteristics.

This invention discloses a toughened PMMA material and its preparation method. The preparation method includes the following steps: 1) mixing methyl methacrylate and a chain transfer agent to obtain a first mixture; 2) mixing dicyclopentadiene and an initiator to obtain a second mixture; 3) mixing the first mixture and the second mixture through a pipe mixer, and then adding the mixture to a continuous screw reactor for polymerization to form the toughened PMMA material. The toughened PMMA material prepared using this method exhibits significantly improved impact strength while maintaining its light transmittance, tensile strength, and other key properties without significant decrease. Furthermore, the raw materials used in this preparation are inexpensive, reducing production costs.

The application provides a glass fiber sizing agent, which comprises effective components and water, and the solid content is 5.0%-8.0%; the effective components comprise silane coupling agent, film forming agent, lubricant, surfactant, interface reinforcing agent, crosslinking agent, wetting agent and pH value regulator; the percentage of the solid mass of each effective component in the total mass of the sizing agent is shown as follows: 7%-25% of silane coupling agent, 43%-80% of film forming agent, 5%-16% of lubricant, 1%-7% of surfactant, 1%-5% of interface reinforcing agent, 1%-5% of crosslinking agent, 2%-6% of wetting agent and 1%-7% of pH value regulator; the glass fiber yarn produced by using the sizing agent has good bunching property, the yarn is soft and easy to disperse after tension, has less hairiness, has very fast impregnation speed in dicyclopentadiene resin and good impregnation effect; meanwhile, the sizing agent is suitable for weaving and pultrusion process, the prepared composite material glass fiber has good interface compatibility with resin, and has very excellent static mechanical and fatigue properties.

An adhesive composition comprising an acid-modified polyolefin and an epoxy resin, the aforementioned acid-modified polyolefin satisfying conditions (i) to (iii) below, condition (i): being an acid-modified product of a homopolymer of butene or an acid-modified product of a copolymer of butene, condition (ii): having an acid value of 0.1 mg KOH / g to 15 mg KOH / g, and condition (iii): having a weight average molecular weight of 80,000 or more, the aforementioned epoxy resin having at least one structure selected from the group consisting of a dicyclopentadiene structure, a cresol structure, a naphthalene structure, and a constituting unit derived from butadiene, and the content of the aforementioned epoxy resin being 2 mass parts to 40 mass parts relative to 100 mass parts of the aforementioned acid-modified polyolefin.

To provide a molding containing a dicyclopentadiene resin which can satisfy various properties.MEANS FOR SOLVING THE PROBLEM: The present invention relates to a molding containing a dicyclopentadiene resin. The molding has a first phase containing the dicyclopentadiene resin and a hollow particle-like filler.SELECTED DRAWING: None