41 results about "Cyclobutene" patented technology

The application relates to a preparation method of BOPP waste discharge adhesive tape and belongs to the technical field of adhesive tape. BOPP raw materials, an anti-blocking agent and color master batch are uniformly stirred and mixed, then are sent into an extruder for extrusion and chilling forming; the formed adhesive tape is longitudinally stretched, transversely stretched, pulled, subjected to surface corona treatment, wound, subjected to aging treatment, cut and packaged to obtain the BOPP waste discharge adhesive tape; the anti-blocking agent is prepared through polymerization reaction, centrifugal separation and drying by using a methacrylate, a methallyl nickel chloride dimer, 4-vinylbenzocyclobutene, a mercapto-beta-cyclodextrin and an initiator; the prepared BOPP waste discharge adhesive tape has excellent mechanical properties, low light transmittance and good light shielding performance.

The present application relates to a kind of conjugated microporous polymer, film and its preparation and application, the present application is respectively introduced 1,3,5-tri (4-aminophenyl) benzene, 2,4,6-tri (4-aminophenyl) -1,3,5-triazine or tri (4-aminophenyl) amine on the basis of 3,4-dihydroxy-3-cyclobutene-1,2-diketone, powder polymer is prepared, then through electroblasting technology obtains conjugated microporous polymer film.The conjugated microporous polymer film prepared by the present application realizes the detection of NO2 at room temperature, its preparation method is green and simple, low in price, overcomes the problem that conjugated microporous polymer is difficult to process, has good sensing application prospect.

This invention belongs to the field of solid-state electrolyte technology, specifically relating to a high-pressure resistant composite polymer solid-state electrolyte, its preparation method, and its application. The solid-state electrolyte comprises: a high-pressure resistant terpolymer, a PVDF-based polymer, mullite filler, and a lithium salt; the high-pressure resistant terpolymer is prepared from a high-pressure resistant additive, a crosslinking agent, ethylene ethylene carbonate monomer, and an initiator; the high-pressure resistant additive is selected from at least one of propylene-1,3-sulfonyl lactone, cyclobutene sulfone, and 3-methyl-3-cyclobutene sulfone. The preparation method is as follows: the high-pressure resistant additive, crosslinking agent, initiator, lithium salt, and ethylene ethylene carbonate monomer are mixed to obtain a precursor solution; the PVDF-based polymer and mullite filler are stirred and mixed in a solvent, coated into a film, and vacuum dried to obtain a base film; the base film is immersed in the precursor solution, and after immersion, it is cured to obtain the high-pressure resistant composite polymer solid-state electrolyte.

The invention relates to the technical field of high-frequency and high-speed substrate resin and packaging materials of microelectronic devices, and particularly discloses hydrocarbon resin of dibenzocyclobutene fluorene and derivatives thereof and a preparation method of the hydrocarbon resin, and the hydrocarbon resin is prepared by mixing 9, 9-disubstituent-9H-fluorene and / or the dibenzocyclobutene fluorene derivatives according to a specific proportion, adding a solvent, and stirring to obtain the hydrocarbon resin of the dibenzocyclobutene fluorene and the derivatives of the dibenzocyclobutene fluorene and the derivatives of the dibenzocyclobutene fluorene. And carrying out a thermocuring reaction to obtain the product. The dibenzocyclobutene fluorene derivative is prepared by carrying out Heck reaction on 9, 9-disubstituent-9H-fluorene and halogenated benzocyclobutene under the catalysis of a base catalyst and a modified palladium catalyst, the prepared hydrocarbon resin has very low dielectric constant and dielectric loss and higher softening point and peel strength, and can better meet market requirements.

The application discloses a preparation of a thermosetting benzocyclobutene-based MQ silicone resin and application thereof in preparing a glass fiber composite material, and comprises the following steps: stirring and reacting an organic silicon source, a solvent, a catalyst and water at 30-50 DEG C for 30-90 min to form a mixed solution A; uniformly mixing divinylsiloxane-benzocyclobutene and the solvent to form a mixed solution B, adding the mixed solution B into the mixed solution A, and heating to 65-80 DEG C for 1-3 h; adding an organic phase after the reaction is completed, washing with water for several times until neutral, removing the solvent by vacuum distillation, and vacuum drying; and obtaining the thermosetting benzocyclobutene-based MQ silicone resin. The thermosetting benzocyclobutene-based MQ silicone resin has excellent dielectric properties, mechanical properties, heat resistance and chemical stability, and the cured resin formed by thermal crosslinking has the properties of low dielectric, high tensile strength, high bending strength, chemical stability and heat resistance.

The invention discloses a synthesis method of a high-purity benzocyclobutenyl organosilicone monomer for semiconductor packaging resin, which specifically comprises the following steps: by taking vinyl silane and 4-bromobenzocyclobutene as reaction raw materials, firstly preparing benzocyclobutene-vinyl silane through Heck reaction, and then preparing benzocyclobutene-vinyl silane by taking a Meerwein reagent as a medium and potassium carbonate as an additive, thereby obtaining the high-purity benzocyclobutenyl organosilicone monomer for semiconductor packaging resin. And carrying out mild reaction in a polar aprotic solvent to directly prepare the high-purity benzocyclobutene organic silicon monomer tetramethyl divinyl siloxane dibenzocyclobutene. Compared with the traditional preparation method, the method has the advantages of wide reaction raw material source, low price, few reaction steps and high yield in synthesis, and the reaction is beneficial to the high purification process of the monomer, so that the method is more suitable for industrial batch production.

The invention relates to the field of low dielectric materials, and provides a benzocyclobutene modified acenaphthene derivative as well as a preparation method and application thereof. At least one substituent group on an acenaphthene ring in the molecular structure of the benzocyclobutene modified acenaphthene derivative provided by the invention comprises a BCB group. The benzocyclobutene modified acenaphthene derivative is prepared by carrying out coupling reaction on acenaphthene and / or an acenaphthene derivative and a benzocyclobutene derivative. The benzocyclobutene modified acenaphthene derivative has a total hydrocarbon structure, resin prepared by taking the benzocyclobutene modified acenaphthene derivative as a raw material has lower dielectric constant and dielectric loss when being used for a photoelectric material and has excellent thermal stability, and the performance of the acenaphthene derivative is regulated by regulating substituent groups on an acenaphthene ring; and the application in the fields of high-performance PCBs, packaging and the like can be met.

The application discloses a high-temperature-resistant metalized capacitor film and a preparation method thereof, and belongs to the technical field of thin film or thick film capacitors. The application provides a novel method for preparing a metalized capacitor film, which comprises the following steps: taking 4-vinylbenzocyclobutene as raw material, and combining the raw material with hydrogen bromide after an addition reaction to obtain a substitution product; combining 2-methoxy-4-vinylphenol with the substitution product after demethylation to obtain a polymerization monomer containing a double bond and a cycloalkane structure; polymerizing the polymerization monomer with decafluorobiphenyl and 4-allylphenol to obtain a base film; and plating a metal layer on the base film to obtain the high-temperature-resistant metalized capacitor film. The application has good thermal stability, and solves the technical problem that a thermoplastic base film is deformed or decomposed at high temperature, and is difficult to meet the use requirement.

The invention relates to the technical field of preparation of low-dielectric films, and particularly discloses a preparation device and process of a benzocyclobutenyl low-dielectric film. The preparation method comprises the following steps: S1, under the protection of inert gas, mixing a benzocyclobutenyl monomer, a photosensitizer and a specific solvent in proportion, and carrying out ultrasonic stirring to obtain a uniform photosensitive precursor solution A; s2, pretreating the surface of the base material by adopting an atmospheric pressure non-equilibrium plasma technology, and introducing an active functional group to obtain a surface-activated base material B; s3, applying gradient change coating pressure to the base material B, and uniformly coating the photosensitive precursor solution A on the surface of the base material; s4, the coated base material B sequentially passes through multi-stage temperature control drying systems in different temperature areas, and gradient heating is conducted; and S5, in a nitrogen protection atmosphere, performing high-precision curing on the dried base material by adopting an infrared laser heating technology to form the low-dielectric film, so that the influence on the service life and the performance stability of the low-dielectric film is avoided.

The invention relates to the technical field of active resin, in particular to benzocyclobutenyl-terminated active ester resin as well as a preparation method and application thereof. The preparation method of the benzocyclobutenyl-terminated active ester resin comprises the following steps: stirring and mixing an acyl chloride-containing compound, diallyl bisphenol A, a benzocyclobutenyl end-capping reagent and a first organic solvent to obtain a first mixture; dropwise adding an acid-binding agent into the first mixture, and carrying out polymerization reaction to obtain a reaction product; and purifying the reaction product, and removing the first organic solvent to obtain the benzocyclobutenyl-terminated active ester resin. According to the preparation method, through the synergistic effect of flexible chain segment embedding, terminal group polarity adjustment, main chain polarity optimization and molecular weight control, the intermolecular acting force of BMI containing the BCB terminal group is effectively reduced, the compatibility of BMI molecules containing the BCB terminal group and an organic solvent is improved, and therefore the solubility of the BMI molecules is improved.

The invention relates to a synthesis method of 2-butadiene sulfone. The synthesis method comprises the following steps: mixing a compound I with an alkaline substance, and carrying out elimination reaction to obtain the 2-butadiene sulfone. According to the method, 3-substituted sulfolane is simply stirred in an alkaline substance for elimination reaction, and then simple separation and extraction are carried out, so that 2-sulfolane can be conveniently prepared. The method is simple to operate, has high selectivity, can specifically generate the target product 2-butadiene sulfone, and does not generate a byproduct 3-butadiene sulfone, so that the synthesis yield and the purification efficiency are greatly improved. The synthesis method of 2-butadiene sulfone provided by the invention has the characteristics of simple and convenient synthesis conditions, high selectivity, high yield and high purity.

The invention discloses a crosslinkable hole transport polymer and application thereof in preparation of a photoelectric device. The polymer has a triarylamine unit, and a group with chemical reaction activity is introduced to a side chain of the polymer; chemically reactive groups of styrene, benzocyclobutene and substituents or derivatives thereof; the cross-linkable hole transport polymer can be cross-linked and cured under the mild conditions of heat, light, an initiator and the like, and then has good solvent resistance, another layer of film can be prepared on the cross-linkable hole transport polymer through solution processing, and a multi-layer solution processing device is achieved. The cross-linkable hole transport polymer also has high optical transparency, has large potential as a hole transport polymer, and can realize different energy levels and carrier mobility by adjusting the content of a polymerization unit. The method can be used for preparing the hole injection layer of the photoelectric device.

The invention relates to the technical field of graded pore materials, in particular to a graded pore preparation method of a UTSA-280 material, the UTSA-280 material with a graded pore structure and application of the UTSA-280 material. The preparation method comprises the following steps: contacting a first dispersion liquid containing a calcium source and a first dispersing agent with a second dispersion liquid containing 3, 4-dihydroxy-3-cyclobutene-1, 2-diketone, alkali and a second dispersing agent, and reacting to obtain the UTSA-280 material with a hierarchical pore structure, wherein the reaction temperature is-10 DEG C to 15 DEG C. The UTSA-280 material provided by the invention has developed mesoporous and macroporous structures on the premise of retaining the original microporous structure, the mass transfer rate of adsorbate is remarkably improved, and the UTSA-280 material has good adsorption separation performance; when the UTSA-280 material is used for gas adsorption separation, the gas adsorption capacity is improved, and meanwhile, the separation factor is increased.

The present invention provides a compound of formula (I) or a racemate or stereoisomer thereof, a pharmaceutically acceptable salt thereof, or a solvate of the compound of formula (I). The compound has good CCR6 inhibitory activity and better selectivity than CXCR2, while possessing excellent pharmacokinetics and pharmacodynamics.

The invention provides a benzo ring type carbon dioxide-philic microsphere as well as a preparation method and application thereof. The preparation method of the benzo ring type carbon dioxide-philic microspheres comprises the following steps: mixing acrylamide, a benzo ring monomer, a propanesulfonic acid monomer and a cross-linking agent, and carrying out polymerization reaction under the action of an initiator; wherein the benzoring monomer comprises one or a combination of more than two of 4-vinyl benzocyclobutene, benzoazetidine, benzoxetane, benzothietane, 2, 3-indoline, 2, 3-dihydrobenzofuran and 2, 3-dihydrobenzothiophene, and the benzoring monomer comprises one or a combination of more than two of 4-vinyl benzocyclobutene, benzoazetidine, benzoxetane, benzothietane, 2, 3-indoline, 2, 3-dihydrobenzofuran and 2, 3-dihydrobenzothiophene. The mass ratio of the acrylamide to the benzo ring monomer to the propanesulfonic acid monomer is (5-20): (0.08-0.8): (0.4-1.6); the temperature of the polymerization reaction is 30-55 DEG C, and the time is 6-10 hours. The microsphere material can form a high-strength three-dimensional network, and in-situ physical plugging of a gas channeling channel is achieved.

The invention discloses a resin composition and a product thereof, the resin composition comprises a vinyl-containing resin and a phosphorus-containing copolymer, and the phosphorus-containing copolymer is prepared by copolymerization of a mixture. The mixture comprises vinyl benzocyclobutene with a structure as shown in a formula (1) and a phosphorus-containing compound with a structure as shown in a formula (2). The resin composition can be made into various products, including resin films, prepregs, laminates or printed circuit boards, and is improved in one or more of dielectric loss, tensile force to copper foil, flame resistance, X-axis thermal expansion coefficient and other characteristics.

This application discloses a cyclic olefin ring-opening alternating copolymer, its preparation method, and its applications. The cyclic olefin ring-opening alternating copolymer of this application is synthesized by alternating 1:1 ring-opening substitutions of any two cyclic olefin monomers selected from substituted or unsubstituted cyclopropylene, substituted or unsubstituted cyclobutene, and substituted or unsubstituted norbornene. The cyclic olefin ring-opening alternating copolymer of this application possesses a precise 1:1 alternating insertion copolymer structure with high alternation degree, high molecular weight, narrow distribution, and excellent thermodynamic properties, laying the foundation for the preparation of high-performance elastomers, optical films, and biomedical materials.

A composition comprising trifluorochloroethylene and hexafluorocyclobutene, wherein the trifluorochloroethylene content is 8% by mass or more relative to the total organic compounds contained in the composition, and the hexafluorocyclobutene content is 1 ppm by mass or more relative to the total organic compounds contained in the composition.

The invention discloses a composition containing a benzocyclobutene compound and terminal alkenyl modified polyphenyl ether resin, in the composition, a benzocyclobutene compound monomer at least contains a benzocyclobutene substituent, a cured product with high crosslinking density, excellent interface consistency and smooth surface can be formed with terminal alkenyl modified polyphenyl ether resin, and an electronic substrate material with low dielectric constant, ultralow dielectric loss tangent, extremely low thermal expansion coefficient, high glass transition temperature, high peel strength and excellent apparent quality is obtained. The resin is suitable for being used as a resin material of a new generation of high-frequency high-speed substrates and a packaging material of electronic devices.

The invention discloses a method for detecting related substances of sulfolane, which comprises the following steps: by taking nitroterephthalic acid modified polyethylene glycol as a capillary column of a stationary liquid and a methanol solution containing 2, 6-butylated hydroxytoluene as a solvent, directly injecting a sample through temperature programming and carrying out gas chromatography detection; the contents of isopropyl sulfolane ether and 2-butadiene sulfone are calculated by using an external standard method, and the contents of other single impurities are calculated by using a peak area normalization method. According to the method, 2, 6-butylated hydroxytoluene is added into the solvent, degradation of a 2-cyclobutene peak can be effectively inhibited, and the problems that in the sulfolane capillary column gas chromatography, the accuracy and linearity of 2-cyclobutene sulfone are poor, and the solution stability is poor are successfully solved. The method provided by the invention can be applied to factory-in detection of sulfolane, additional modification of a gas chromatograph is not needed, and additional training related to a packed column does not need to be carried out on analysts, so that the implementation period of the method is shortened, and the implementation and detection cost of the method is reduced.

The present invention relates to a UV-absorbing polymer composition comprising a polyolefin and a UV-absorbing agent, wherein the polyolefin contains at least one benzo-cyclobutene (BCB) pendant group, the UV-absorbing agent contains at least one dienophilic group, the polyolefin is capable of forming a cross-linked polyolefin by reaction between the BCB pendant groups, and the polyolefin and the UV-absorbing agent are covalently linked by reaction between the BCB pendant groups and the dienophilic groups. The present invention also relates to a process for the preparation of a UV-absorbing polymer and to a UV-absorbing polymer prepared thereby and to the use thereof.

This invention provides a method for the organocatalytic synthesis of chiral cyclobutenes, belonging to the field of organic synthesis technology. Utilizing the easily cleaved carbon-carbon bonds of bicyclo[1.1.0]butane, this invention introduces an ester group at the C1 position of bicyclo[1.1.0]butane to form a hydrogen bond with the catalyst, and introduces an aryl group at the C3 position to stabilize the carbocation intermediate. Under the catalysis of a chiral Brønsted acid, efficient and highly selective isomerization is achieved to obtain chiral cyclobutene products. This method has good substrate universality, including good tolerance to halogen, alkyl, and aryl groups. The method is characterized by simple operation, mild reaction conditions, high yield, and good selectivity.

The invention relates to a random copolymer of structure (A) comprising, a carboxylic acid bearing repeat of structure (I), a 4-vinylbenzocyclobutene derived repeat unit of structure of structure (II), a styrenic repeat unit of structure (III), an alkyl acrylate or alkyl 2-methylenealkanoate derived repeat unit of structure (IV), a hydroxy functionalized alkyl acrylate or alkyl 2-methylenealkanoate derived repeat unit of structure (V), and two end groups as shown in structure (A) one of which is H and the other is a methyl moiety substituted with Rr, Rr1 and Rr2, wherein Rr1, is a C-1 to C-8 alkyl, Rr2 is selected from a C-1 to C-8 alkyl, a C-1 to C-8 alkylene hydroxy moiety (-alkylene-OH), a C-1-C-8 alkylenecarboxylic acid moiety (-alkylene-CO2H), or a benzylic alcohol comprising moiety of structure (B), Rr is a cyano moiety (—CN) or a carbonylalkyl moiety (—C(═O)—Ri), wherein Ri is a C-1 to C-8 alkyl or an aryl moiety.

The application relates to the technical field of heat-curable crosslinking agents, in particular to vinylbenzyl fluorene containing a benzocyclobutene group and a preparation method and application thereof, wherein the preparation method of the vinylbenzyl fluorene containing the benzocyclobutene group comprises the following reaction steps: S1. adding fluorene, a solvent, a strong base and a phase transfer catalyst into a reaction container, adding 4-bromobenzocyclobutene dropwise into the reaction container under inert atmosphere, continuous stirring and constant temperature conditions, sequentially performing treatment of solvent removal under reduced pressure, extraction, washing, solvent removal under reduced pressure in the organic phase, and obtaining a target intermediate product; S2. adding the target intermediate product, 4-vinylbenzyl chloride, a solvent, a weak base and a phase transfer catalyst into a reaction container, performing reaction under inert atmosphere, continuous stirring and constant temperature conditions, sequentially performing treatment of solvent removal under reduced pressure, extraction, washing, solvent removal under reduced pressure in the organic phase and recrystallization, and obtaining the vinylbenzyl fluorene containing the benzocyclobutene group.

This invention relates to the field of chemical materials technology, specifically to an organosilicon compound functionalized with benzocyclobutene and its preparation method. The structure is shown in formula (I): where n is an integer from 2 to 8; R is one of the following: (a) a substituted or unsubstituted C1-C6 alkyl group; (b) a substituted or unsubstituted aryl group. The compound of this invention, or the polymer obtained by copolymerization with other compounds containing unsaturated bonds, possesses excellent thermal stability, mechanical properties, and dielectric properties, and can be used as a high-temperature resistant material, high-performance composite material, electronic packaging material, and aerospace material; applied to high-frequency PCB boards for 5G / 6G and interlayer packaging of chips, etc. The preparation method of this invention is simple, uses inexpensive and readily available raw materials, has high yield, low cost, and is easy to mass-produce and apply.

Disclosed is a resin composition, including 100 parts by weight of a maleimide resin and 10 to 100 parts by weight of a compound of formula (1). Wherein, n is an integer from 3 to 6, X and Y are each independently arylcyclobutenoxy or aryloxy, the number of arylcyclobutenoxy is greater than or equal to 3, and the aryloxy contains or does not contain an alkenyl, an acrylate group or a methacrylate group having 1 to 4 carbon atoms. Further disclosed is a use of the resin composition in preparing a product, and a product of which at least a portion is prepared from the resin composition, wherein the product includes a prepreg, a resin film, a laminate, a printed circuit board, or a cured insulator.

The invention discloses benzocyclobutene functionalized organic-inorganic hybrid microspheres as well as a preparation method and application thereof, and relates to the technical field of modified materials. The hybrid microsphere disclosed by the invention is a siloxane hybrid microsphere prepared by hydrolytic condensation of a silane precursor; the interior of the hybrid microsphere has a ladder-cage type polysilsesquioxane structure, and when the microsphere is added into BCB resin, the dielectric constant of the BCB resin can be remarkably reduced through mutual cooperation between a nanoscale cavity in the cage type structure and the low polarizability effect of the ladder type structure; moreover, the surface of the microsphere contains a large number of benzocyclobutene functional groups, the crosslinking density of a composite material and the dispersity and compatibility of the hybrid microsphere in BCB resin can be remarkably improved, so that the adverse effect of a modified material on the performance of the BCB resin is remarkably improved, and the method is suitable for large-scale application in dielectric reduction modification of the BCB resin.

The application discloses a production process of 3,4-dihydroxy-3-cyclobutene-1,2-diketone, which comprises the following steps: (1) dissolving perchloro-1,3-butadiene and morpholine in a first organic solvent and uniformly mixing, then carrying out a warming reaction, and after the reaction is completed, carrying out solid-liquid separation to obtain a first solution, wherein the first solution contains a first intermediate product; (2) adding a weak acid catalyst and water into the first solution, evaporating liquid after reaction, then adding water for dissolution, carrying out solid-liquid separation to obtain a second intermediate product in solid form; (3) mixing the second intermediate product with a strong acid aqueous solution, carrying out solid-liquid separation while hot after reaction, taking liquid, and carrying out recrystallization to obtain a crude product; and (4) dissolving the crude product in water, carrying out solid-liquid separation, taking liquid, and carrying out recrystallization to obtain 3,4-dihydroxy-3-cyclobutene-1,2-diketone. The application reduces the types of solvents and catalysts, simplifies the production steps, and is favorable for greatly improving production capacity and reducing production cost.

Electrolytic solution contains non-aqueous solvent and electrolyte salt dissolved in the non-aqueous solvent. The non-aqueous solvent contains a first compound, and the first compound is at least one type selected from a group including 1,3-diethyl-4-methyl-1-cyclobutene and a fluoro-substituted compound of the 1,3-diethyl-4-methyl-1-cyclobutene. An electricity storage element is configured using this electrolytic solution.

The invention discloses a benzocyclobutene modified cross-linking agent and a preparation method thereof, and relates to the technical field of high-frequency substrate materials, and the benzocyclobutene modified cross-linking agent is obtained by carrying out a Heck substitution reaction on a nitrogen-containing or fluorine-containing mother nucleus structure compound and halogenated benzocyclobutene. The cross-linking agent is matched with the benzocyclobutene resin, the vinyl modified PPO, the styrene modified resin and other resins for use, and the obtained high-frequency substrate has the advantages of extremely low dielectric constant (Dk), extremely low dielectric loss tangent (Df), higher softening point (TG), higher heat resistance, lower thermal expansion coefficient, greatly improved peel strength, greatly reduced hygroscopicity and favorable heat resistance. As a cross-linking agent of a high-frequency substrate formula system, the cross-linking agent has a very good application prospect.