61 results about "Divinyl benzene" patented technology

Mobile or stationary air filter (L) or room fan (RL) according to Figure 1, comprising an outer wall (5), a (2) for generating an airflow (3) which is guided through an air filter material (1.1), an air inlet (2.1) and an air outlet (2.2), wherein the air filter material (1.1) contains poly(styrenesulfonic acid) (sulfonic acid biocide) (1.3) cross-linked with divinylbenzene and / or an acidic salt (1.3.1) (sulfonic acid biocide salt) of the sulfonic acid biocide (1.3) with biocidal cations, wherein the sulfonic acid biocide (1.3) and / or sulfonic acid biocide salt (1.3.1)(i) are positively and / or materially bonded to and / or in inert carriers and, in the fixed state, are in direct contact with carrier materials (1.1.7) on and / or in which biocidal Metal microparticles of a mean particle size d50 of 0.1 µm to <1,000 µm are fixed, and / or (ii) with carrier materials (1.1.7) on and / or in which biocidal metal microparticles of a mean particle size d50 of 0.1 µm to <1.000 µm are fixed, are mixed; its use and methods for the production and environmentally friendly disposal of air filter materials (1.1).

The application relates to the field of decorative materials, in particular to a wear-resistant decorative paper and a preparation method thereof. The preparation method of the wear-resistant decorative paper comprises the following steps: coating wear-resistant paint on the surface of base paper to form a wear-resistant coating layer through drying treatment, so that the wear-resistant decorative paper is prepared; the wear-resistant paint is prepared by using acrylic acid hydroxy ester, ethyl acrylate and methyl methacrylate, so that the wear-resistant paint has good adhesion; the wear-resistant paint is prepared by using divinylbenzene and styrene, so that the hardness and strength of the film layer formed by the wear-resistant paint are improved; the wear-resistant paint is prepared by using vinyl silicone oil, so that the flexibility and water / oil repellency of the film layer formed by the wear-resistant paint are improved; the wear-resistant paint is prepared by using acrylic acid hydroxy ester, ethyl acrylate, methyl methacrylate, divinylbenzene, styrene and vinyl silicone oil, so that the prepared wear-resistant decorative paper has excellent wear resistance.

The application provides a fast-hardening early-strength high-pressure and freeze-resistant cement material and a preparation method thereof, belongs to the technical field of cement materials, and the cement material comprises silicate cement clinker, natural anhydrous gypsum, calcined kaolin, calcined quartz powder, a silicon-aluminum-titanium composite mineralized early-strength freeze-resistant agent, a crystal bridge-pore dual functional agent and the like. The silicon-aluminum-titanium composite mineralized early-strength freeze-resistant agent is prepared by sintering, quenching and heat reaction of bauxite, silica fume, titanium dioxide, anhydrous calcium chloride and trisodium citrate, and surface modification by KH-550. The crystal bridge-pore dual functional agent comprises a calcium silicate hydrate crystal bridge agent and a polymer-SiO2 composite elastic pore forming agent. The polymer-SiO2 composite elastic pore forming agent is prepared by shearing emulsification of an oil phase prepared from styrene, butyl acrylate, divinylbenzene and polyglyceryl-10 diisostearate and an aqueous phase prepared from deionized water, sodium dodecyl sulfate and polyethylene glycol allyl methyl ether, ammonium persulfate reaction and tetraethyl orthosilicate reaction.

The invention relates to the technical field of radioactive wastewater treatment materials, in particular to phosphoric acid functionalized porous polyion liquid for uranium-containing wastewater treatment as well as a preparation method and application of the phosphoric acid functionalized porous polyion liquid. According to the preparation method of the phosphoric acid functionalized porous polyionic liquid for uranium-containing wastewater treatment, provided by the invention, 1-allyl-3-vinyl imidazole chloride ionic liquid is taken as a monomer, ethylene glycol dimethacrylate or p-divinyl benzene is taken as a cross-linking agent, and the porous polyionic liquid is obtained through polymerization reaction; and carrying out phosphoric acid anion exchange to prepare the phosphoric acid functionalized porous polyion liquid. The phosphoric acid functionalized porous polyion liquid has the characteristics of high U (VI) adsorption capacity, excellent selectivity and environmental friendliness, uranium-containing wastewater can be efficiently treated, and the problems that a traditional adsorption material is low in adsorption capacity, insufficient in selectivity and large in use amount of an organic solvent are solved.

The invention relates to a method for the separation of two hydrophilic neutral oligosaccharides from each other with a chromatography on a bromine functionalized polystyrene cross-linked with divinylbenzene (BPS-DVB) stationary medium.

The invention belongs to the field of superhigh-temperature ceramic materials, and particularly relates to a hafnium carbide precursor and a preparation method thereof.The preparation method comprises the steps that n-propyl alcohol hafnium and two special modified compounds are mixed in an inert atmosphere, dicumyl peroxide, benzophenone, triethanolamine and divinyl benzene are added for stirring, and the hafnium carbide precursor is obtained; adding tetrahydrofuran, stirring at a constant temperature to form a homogeneous solution, and finally filtering to obtain a precursor; the two modified compounds are vinyl tris (diethylamino) hafnium and acryloyloxy dibenzoyl hafnium complexes respectively, and the preparation method is realized through substitution reaction of hafnium tetrachloride and amine compounds and coordination reaction of n-propanol hafnium, dibenzoylmethane and acryloyl chloride respectively. The obtained hafnium carbide precursor contains a hafnium source, a modified compound, a cross-linking agent and a solvent, through molecular design, the ceramic yield is remarkably increased, the cracking temperature is reduced, the oxidation resistance and sintering density of final ceramic are improved, and the preparation method is suitable for preparing an ultra-high-temperature ceramic material.

This invention discloses a hydrogenated asymmetric long-chain branched SBS polymer and its preparation method. The polymer is obtained by selective hydrogenation of a branched styrene-butadiene / divinylbenzene-styrene triblock copolymer with high vinyl content and asymmetric long chains. The polymer exhibits a bimodal narrow distribution and a dendritic structure with asymmetric long-chain branching. It possesses characteristics such as high oil fillability, high oil retention, low deformation, high cohesiveness, and high tensile strength, exhibiting superior overall physical properties compared to existing SEBS.

The application provides a kind of hard carbon material based on activated carbon and its preparation method and application, it is related to electrochemical energy storage technical field.The preparation method of hard carbon material based on activated carbon includes: activated carbon is dipped in initiator, is obtained after stirring, drying mixed material;The mixed material is pre-crosslinked with vinyl monomer, then the pre-crosslinked product is heat treated, finally carbonization;The vinyl monomer includes one or more of styrene, divinyl benzene, methyl acrylate, 1,4-butadiene, propylene, acrylonitrile, ethyl acrylate, acrylic acid, acrylamide.The hard carbon material provided by the application is prepared by the preparation method.The hard carbon material provided by the application is used for lithium, sodium ion battery negative material.After activated carbon is filled with vinyl monomer, crosslinking and carbonization, the hard carbon material is prepared, and the electrochemical performance and cycle life are better, the sodium storage capacity is excellent, and it is a better lithium, sodium ion battery negative material.

The invention discloses a preparation method and application of a novel benzyl cinnamate-vinyl toluene (PVT) mixed matrix neutron / gamma discrimination plastic scintillator. The plastic scintillator is composed of a polymer matrix, a main fluorescent dye, a secondary fluorescent dye, a cross-linking agent and an initiator, the polymer matrix is benzyl cinnamate (RG) and vinyl toluene, the main fluorescent dye is 2, 5-diphenyloxazole (PPO), the secondary fluorescent dye is 7-diethylamino-4-methylcoumarin (MDAC), and the initiator is an initiator. The crosslinking agent is divinyl benzene (DVB), and the initiator is azodiisobutyronitrile (AIBN). The prepared plastic scintillator is polymerized based on a novel organic polymer matrix, and has good transparency. Compared with a plastic scintillator of the same type, the preparation time is greatly shortened by using the substrate, and the preparation efficiency is improved.

The application provides a chloramphenicol-containing organic porous polymer catalyst and a synthesis method and application thereof, and belongs to the technical field of organic synthesis. The polymer catalyst comprises intermediates A, B and C, the intermediates A and B are styrene and divinylbenzene isomer mixtures respectively, and the intermediates A, B and C are synthesized through a polymerization reaction under the action of a free radical initiator. The polymer catalyst is a heterogeneous catalyst with a chloramphenicol chiral skeleton structure, can be synthesized by taking industrial waste chloramphenicol as a starting material, has the advantages of low cost, good catalytic efficiency, high enantioselectivity and multiple recycling, etc. The asymmetric catalytic synthesis using the catalyst can separate and recycle the catalyst from the reaction system through a simple filtration operation, has the technical advantages of simple experimental operation steps, recyclable catalyst, etc. The chloramphenicol polymer catalyst has good industrial application prospect when applied to the asymmetric alcoholysis ring-opening of a cyclic anhydride.

The application provides an organic polymer carrier, a Z-N catalyst and a preparation method and application thereof. The organic polymer carrier is obtained by copolymerization of monomers including divinylbenzene and unsaturated catechol ester monomers; wherein the unsaturated catechol ester monomer has a structure shown in formula I: the catalyst has good stereodirecting ability, and when used for propylene homopolymerization, the obtained polypropylene has high stereoregularity and relatively wide molecular weight distribution characteristics.

The invention discloses an anion chromatographic stationary phase based on carbon dot modified polystyrene-divinyl benzene and a preparation method of the anion chromatographic stationary phase. The stationary phase is prepared through a CDs agglomeration method or a CDs grafting method. The CDs agglomeration method comprises the following steps: quaternizing CDs, agglomerating the CDs on the surfaces of sulfonated PS-DVB microspheres through electrostatic interaction, and then carrying out hyperbranched modification to obtain the CDs agglomeration type PS-DVB anion chromatography stationary phase. The CDs grafting method comprises the following steps: grafting CDs on the surfaces of PS-DVB microspheres through covalent bonds by taking glycidyl methacrylate as an intermediate medium, and then carrying out hyperbranched modification to obtain the CDs grafted PS-DVB anion chromatography stationary phase. The stationary phase developed by the invention shows good application potential in the field of trace analysis of complex samples, and is expected to play an important role in actual analysis and detection work.

The embodiment of the invention discloses high-performance humidity sensing liquid as well as a preparation method and application thereof. The humidity sensing liquid is prepared from the following components in parts by weight: 5 to 8 parts of polyvinylpyrrolidone K-90, 0.5 to 1.5 parts of divinyl benzene, 3 to 4 parts of lithium chloride and 100 parts of distilled water. A humidity sensing film prepared from the humidity sensing liquid can keep a complete structure and stable performance at the high temperature of 260 DEG C, not only has excellent high temperature resistance, but also synchronously realizes high humidity response sensitivity, high detection precision and good long-term stability. The humidity sensing liquid can directly meet the humidity detection requirements of high-temperature scenes such as desulfurization and denitrification equipment, high-temperature flues and drying equipment in a steel mill, and has a wide application prospect.

The application discloses a kind of temperature-resistant salt-tolerant slow swelling microspheres based on double emulsion and preparation method and application, it is related to oilfield chemical technical field, preparation method includes the following steps: emulsifier is weighed and dissolved in deionized water, ultrasonic dispersion is uniformly, then acrylamide, sulfonic monomer, hydrophobic monomer, polyoxyethylene ether functional monomer, di-vinyl benzene and initiator are added into the dispersion solution of emulsifier respectively, and water phase is prepared by stirring, water phase is slowly added into inner oil phase, and oil-in-water primary emulsion is obtained by high-speed stirring, then oil-in-water primary emulsion is added into outer oil phase and stirred to obtain double emulsion.Double emulsion is deoxidized by nitrogen, and the product is collected after aging at room temperature after stirring polymerization, washed, air-dried to constant weight, and temperature-resistant salt-tolerant slow swelling microspheres are obtained;In the application, the temperature-resistant salt-tolerant slow swelling microspheres prepared based on double emulsion template have spatial isolation effect of annular liquid film, the amphiphilic environment of emulsion provides multiphase reaction space for the synthesis of microspheres, and the microspheres have uniform particle size and excellent dispersity.

The invention discloses a magnetic lead ion imprinted polymer material as well as a preparation method and application thereof, and belongs to the technical field of magnetic ion imprinted materials. According to the method, 1, 3, 5-tri (4-aminophenyl) benzene and 2, 5-divinyl-1, 4-phthalaldehyde are adopted as monomers, and the magnetic COF material with high porosity is successfully constructed on the surface of Fe3O4 (at) SiO2 (at) KH-570 through Schiff base reaction. A magnetic COF material is used as a substrate, through a surface imprinting strategy, double bonds on the surface of the magnetic COF material and vinylpyridine are subjected to an ion imprinting polymerization reaction, and the ion imprinting-magnetic covalent organic framework material (MCOF (at) IIP) is prepared. The method has the advantages of being simple and rapid to operate, mild in reaction condition and easy to control, and the prepared product is high in porosity, good in stability and high in adsorption selectivity and has wide application prospects in the aspects of adsorption removal and extraction separation of heavy metal ions.

The application discloses a kind of highly branched asymmetric styrene-butadiene-styrene copolymer and its preparation method and application in shoe sole.The highly branched asymmetric styrene-butadiene-styrene copolymer of the application has three-dimensional network structure, which is asymmetric styrene-butadiene-styrene copolymer as arm, divinylbenzene as coupling core point, with high degree of branching, good oiling performance, good processing performance and other characteristics, blending granulation with polystyrene, processing operating oil and the like, without vulcanization, shoe sole product can be obtained by injection molding or compression molding process, simple and environment-friendly process, DIN abrasion of product is less than 70mm 3 , dry and wet skid friction coefficient is greater than 0.8, and can be widely applied in high wear-resistant, high non-slip shoe sole.

The invention provides a resin composition, a prepreg and application of the prepreg in a rigid-flex printed circuit board, and the resin composition comprises the following components by weight: 10-100 parts of polyphenyl ether resin; 10 to 50 parts by weight of a styrene-divinyl benzene copolymer; 5 to 40 parts by weight of a styrene-butadiene-styrene block copolymer; 5 to 40 parts by weight of an acenaphthylene-styrene-divinyl benzene copolymer; the molar percentage of a styrene unit in the styrene-divinyl benzene copolymer is 5 to 90 percent; the molar percentage of a styrene unit in the styrene-butadiene-styrene block copolymer is 15 to 70 percent; the molar percentage of a styrene unit in the acenaphthylene-styrene-divinyl benzene copolymer is 15 to 80 percent. Through cooperation of polyphenyl ether resin and three copolymers, the dielectric property, heat resistance, copper foil adhesion, reactivity and CVL film adhesion of the resin composition are regulated and controlled, and the resin composition with excellent and extremely low dielectric property, heat resistance, non-fluidity and high adhesion is obtained.

The application discloses a kind of dual-functional polymer-based ammonia adsorbent and preparation method thereof, which can efficiently adsorb low-concentration ammonia.The application is prepared by the following steps: first, quaternary ammonium reaction of vinyl imidazole and functional halogenated alkane, then chelation reaction of metal chloride, so that the product is dual-functional, then free radical copolymerization reaction of di-vinyl benzene, to obtain dual-functional polymer-based ammonia adsorbent with porous structure.The obtained polymer-based adsorbent contains weak acidic group and metal ion, and has ultra-high adsorption capacity for low-concentration ammonia (adsorption capacity for 3 vol.% ammonia can be as high as 10.8 mol / kg), and excellent regeneration performance and ammonia adsorption selectivity.The dual-functional polymer of the application has high adjustability of functional groups, and has good industrial application potential.

The invention belongs to the technical field of material synthesis, and discloses a catalyst, a preparation method thereof and a method for catalytically synthesizing triacetonamine by using the catalyst. The catalyst comprises a styrene-divinylbenzene copolymer skeleton, acetylacetone metal salt crosslinked on the styrene-divinylbenzene copolymer skeleton through chemical bonds, and acidic sites loaded on the styrene-divinylbenzene copolymer skeleton. The preparation method comprises the following steps: step 1, preparing a styrene-divinylbenzene copolymer skeleton; uniformly stirring styrene or a styrene derivative, divinyl benzene, a pore-foaming agent and an initiator to obtain an oil phase; step 2, dissolving acetylacetone metal salt in a solvent, and uniformly mixing with the oil phase to obtain an oil phase system; step 3, mixing the dispersing agent solution and the polymerization inhibitor solution to obtain a water phase system; step 4, putting the oil-phase system into the water-phase system to prepare resin pellets; step 5, acidification; and 6, washing and drying. When the catalyst disclosed by the invention is used for catalytically synthesizing triacetonamine, the conversion rate is high, and the selectivity is strong.

The present application relates to the field of gel material, disclose a kind of biomass gel and its preparation method and application, the method comprises: (1) in inert atmosphere 1, in the presence of mixed solvent 1, polyether, 2-acrylamide-2-methylpropane sulfonic acid, dimethylaminoethyl methacrylate, divinyl benzene and initiator are polymerized to obtain intermediate;(2) in inert atmosphere 2, in the presence of mixed solvent 2, the intermediate is crosslinked with biomass raw material, ferric salt, to obtain biomass gel;The biomass raw material is selected from at least one of alkali lignin, dealkalized lignin, sodium lignosulfonate, calcium lignosulfonate, tannic acid, cellulose and inulin;Using the method of the application, a kind of biomass gel resistant to high temperature, salt and not easy to dissociate can be prepared.

Described herein are articles of manufacture comprising intertwined cation-conductive polymer fibers such as cross-linked sulfonated polystyrene (c-SPS) fibers and conductive nanoparticle-embedded hydrophilic water-insoluble polymer fibers such as PAN fibers in which the conductive nanoparticles are embedded within the hydrophilic water-insoluble polymer fibers. Also described are dense ion-exchange membranes formed from the articles of manufacture by hot-pressing the intertwined fibers to form a dense (i.e., substantially non-porous) membrane. The articles of manufacture are prepared by co-electrospinning cationic conductive polymer fibers such as SPS fibers and conductive nanoparticle-embedded hydrophilic water-insoluble polymer fibers such as PAN fibers from separate nozzles into the same collector, which substantially uniformly intertwines the fibers. The SPS fibers are then crosslinked with a suitable crosslinking agent, such as polyethylene oxide (PEO; also known as polyoxyethylene), poly(vinyl alcohol) or divinylbenzene.

The invention provides a method for determining the content of formic acid in a valaciclovir hydrochloride bulk drug, and belongs to the technical field of drug quality detection, and the method comprises the following steps: a test solution is an aqueous solution of a valaciclovir hydrochloride bulk drug to be detected; the reference solution is an aqueous solution of formic acid; respectively carrying out liquid chromatography detection on the test solution and the reference solution; the conditions of liquid chromatography detection are as follows: a chromatographic column is a strong cation exchange type resin exchange column with sulfonated cross-linked styrene / divinyl benzene copolymer as a filler; a mobile phase is a phosphoric acid aqueous solution, and isocratic elution is performed; the column temperature is 55-65 DEG C, and the flow velocity is 0.5-0.7 mL / min; the instrument is a high performance liquid chromatograph with an ultraviolet detector; and the detection wavelength of the ultraviolet detector is 210 nm. According to the method, formic acid, valaciclovir hydrochloride and impurities thereof can be rapidly and efficiently separated, the content of formic acid in the antiviral drug valaciclovir hydrochloride bulk drug is accurately determined, and the quality of the valaciclovir hydrochloride bulk drug is guaranteed.

The invention relates to the technical field of flame-retardant resin, and provides polydivinylbenzene flame-retardant resin as well as a preparation method and a cured product thereof. The polydivinylbenzene flame-retardant resin provided by the invention is formed by copolymerization of divinyl benzene, ethyl vinyl benzene, a silicon-containing monomer and benzofuran, the divinyl benzene provides a side chain unsaturated group required by crosslinking, and the cured resin has an excellent rigid skeleton; flexible alkyl side chains are regularly inserted into a main chain of the ethyl styrene monomer, so that the impact resistance of the material is improved; by adding the silicon-containing monomer, the combustion performance of the material can be reduced, and the high-temperature resistance and tensile strength of the material are improved; the benzofuran can effectively control the molecular weight of the polymer and reduce the molecular weight distribution of the product. In conclusion, the polydivinylbenzene flame-retardant resin provided by the invention has the advantages of excellent flame retardance, high temperature resistance, high toughness and low dielectric loss, and can meet the use requirements in the fields of electronic packaging, high-end copper-clad plates and the like.

The invention provides a method for simultaneously detecting polyoxyl (40) stearate and glyceryl monostearate and glyceryl distearate, and belongs to the technical field of pharmaceutical analysis and detection. The detection method comprises the following steps: step 1, preparing a to-be-detected sample; step 2, detecting polyoxyl (40) stearate and glyceryl monostearate and glyceryl distearate in the sample solution by adopting a high performance liquid chromatography, wherein a styrene-divinyl benzene copolymer is adopted as a filling agent in a stationary phase under the chromatographic conditions of the high performance liquid chromatography; the mobile phase is tetrahydrofuran. According to the method for simultaneously detecting the polyoxyl (40) stearate and the glyceryl monostearate and the glyceryl distearate provided by the invention, the polyoxyl (40) stearate and the glyceryl monostearate and the glyceryl distearate which have similar properties can be effectively separated and detected through the matching of the specific styrene-divinyl benzene copolymer stationary phase and the specific mobile phase; and the detection method is good in stability, good in reproducibility and high in specificity.

This invention provides a porous organic polymer containing chiral phosphorus-sulfur ligands, its preparation method, and its application. The method includes the following steps: adding a chiral phosphorus-sulfur ligand molecule of Formula I, divinylbenzene, styrene, and a polymerization initiator to a pore-forming solvent, performing a polymerization reaction at a temperature of 60–120°C, and removing the pore-forming solvent to obtain the porous organic polymer. R1 is a monosubstituted or polysubstituted group, each substituent selected from H, methoxy, vinyl, or vinylphenyl; R2 is a monosubstituted or polysubstituted group, each substituent selected from H, methoxy, vinyl, or vinylphenyl; R3 is selected from H, vinyl, or vinylphenyl; and at least one vinyl or vinylphenyl group is included in R1, R2, and R3. Based on the method of this invention, the problem of high cost and difficulty in recovering chiral phosphorus-sulfur ligands is addressed.

The invention provides chelate resin, a preparation method of the chelate resin and application of the chelate resin to purification of regenerated gas of a polycrystalline silicon adsorption tower. The preparation method comprises the following steps: preparation of crosslinked polystyrene microspheres, chloromethylation of polystyrene-divinyl benzene microspheres and grafting of activated stilbene glucoside. The chelating resin and the molecular sieve are matched for use, so that impurities such as B, P and methane in regenerated hydrogen of an adsorption tower in a polycrystalline silicon production technology can be efficiently removed, the accumulation amount of boron, phosphorus and carbon impurities in a large polycrystalline silicon production system along with time change is reduced, and the quality of polycrystalline silicon can be greatly improved.

An ink composition including a water-insoluble coloring agent, a dispersing agent, a resin A, a resin B, and water, in which the resin A is obtained through polymerization of at least a C1-C4 alkyl methacrylate and a C2-C6 alkyl acrylate, and the resin B is obtained through polymerization of at least a styrene-based monomer and divinyl benzene. An inkjet-recording method in which the ink composition is used; a recording medium to which the ink composition is attached; and an inkjet printer including a container filled with the ink composition.

The invention relates to the technical field of adsorption materials, in particular to a functional polymer material for high-selectivity n-heptane adsorption separation and a preparation method of the functional polymer material. During preparation, hydroxypropyl-beta-cyclodextrin is used as a core raw material, polymerizable double bonds are introduced through in-situ esterification, and then the functional polymer material is prepared from hydroxypropyl-beta-cyclodextrin, perfluorooctyl ethyl acrylate and divinyl benzene through an emulsion dispersion-emulsion polymerization process. According to the material, impurities are included in a hydrophobic cavity of modified hydroxypropyl-beta-cyclodextrin, and the hydrophobic synergistic effect of a perfluoro side chain is combined, so that the impurities are adsorbed, and a three-dimensional network constructed by divinyl benzene can fix functional sites and inhibit swelling of chain segments. The functionalized polymer material for high-selectivity n-heptane adsorption separation is high in n-heptane separation selectivity, excellent in solvent expansion resistance and long-term stable in functional sites, the preparation process does not need special monomers, conditions are mild, large-scale production is easy, and the functionalized polymer material can be efficiently applied to n-heptane purification in the fields of petrochemical engineering and the like.

A resin composition includes: 70 parts by weight of a vinyl-containing resin; 3 parts by weight to 45 parts by weight of a polymer A; and 5 parts by weight to 55 parts by weight of a divinylbenzene-styrene-ethylene terpolymer, wherein the vinyl-containing resin includes a vinyl-containing polyphenylene ether resin, a maleimide resin, a vinyl-containing polyolefin or a combination thereof, and the polymer A includes a compound represented by Formula (1), a compound represented by Formula (2), a compound represented by Formula (3), a compound represented by Formula (4), a compound represented by Formula (5), a compound represented by Formula (6) or a combination thereof,wherein n1 to n6 and R1 to R5 are as defined in the specification.