48 results about "Functionalized polystyrene" patented technology

The invention discloses a polyolefin composition, wherein the constituents comprises (by weight ratio): polyolefin resin 20-70%, mineral filler 15-50%, functionalized polystyrene resin 2-25%, coupling agent 0-0.5%, anti-oxidant 0.1-1%. The produced polyolefin composition has good rigidity and tenacity, thus can be used for substituting PS (polystyrene) material in manufacturing outer casings or bases of various household electrical appliances or automobile interior members.

A commercial scale continuous process for the production of a bisphenol comprising reacting a phenol and a ketone in the presence of a modified ion exchange resin catalyst, wherein said modified ion exchange resin comprises a crosslinked gellular acid functionalized polystyrene resin modified by neutralization of with a mercapto promoter.

The invention discloses polystyrene mercury ion fluorescence recognition materials. The structural formula of the polystyrene mercury ion fluorescence recognition materials is as follows. The invention also discloses a preparation method of the functionalized polystyrene mercury ion fluorescence recognition materials. The preparation method comprises the following specific implementation steps of, preparing 5-amino-2-(4'-hydroxy-3'-(2-(2''-ethylsuleenyl ethyl) amino) phenyl-5-amino benzo [d] oxazole (VII), preparing aldehyde polystyrene microspheres (IX) and performing reaction preparation on the compounds (VII) and (IX) obtained through preparation to obtain the functionalized polystyrene mercury ion fluorescence recognition materials (X). The detection sensitivity of the polystyrene mercury ion fluorescence recognition materials is greatly improved due to the molecular wire effect of a polymer and the detection limit is 0.006 micromole every liter. The polystyrene mercury ion fluorescence recognition materials can enter cells and can be applied to the detection on mercury ions in the cells.

The invention discloses a silica-supported lithium phosphate catalyst and a preparation method thereof. The catalyst, with hollow nano silica microsphere as a carrier and loaded with basic lithium phosphate, can be used for gas phase isomerization of epoxy propane. The preparation method is as below: preparing a nano hollow spherical silica microsphere with high specific area by using functionalized polystyrene as a template; preparing basic lithium phosphate by using a water solution containing lithium and alkali metal ions and a water solution containing phosphate ions; and then loading the lithium phosphate onto the silica microsphere to prepare the supported catalyst. The obtained silica supported lithium phosphate catalyst can be used in reaction for isomerization of epoxy alkane into corresponding allylic alcohol, and has higher conversion rate and selectivity at low temperature.

In the patent, a new and entropy-driven three-dimensional DNA walking machine is provided and is combined with a catalytic hairpin assembly (CHA) reaction for successful detection of microRNA. The walking machine uses streptavidin wrapped polystyrene microspheres as a 3-D rail matrix to ensure good repeatability. A preparation method is as follows: miRNA-21 is used as a target, the target continuously walks on a DNA functionalized polystyrene microsphere rail through an entropy-driven strand displacement reaction, so that a DNA trinucleotide composite substrate on the polystyrene microspheresis decomposed, and circulation of the miRNA-21 is realized. In addition, release of a large number of helper strands from the DNA trinucleotide composite substrate can catalyze the CHA reaction with aconcomitant increase in obtained fluorescence signals. A linear range of the composite biosensor is between 50 pM and 20 nM with a detection limit as low as 41 pM. In addition, satisfactory results are obtained in both reproducibility tests (1.05%-4.22%) and recovery tests (99.5%-104.8%). The results show that the method has potential application value in aspects of disease diagnosis.

The invention discloses a polystyrene-graft-succinic carboxylic acid resin and a preparation method thereof, and particularly relates to the field of functional polymer. The invention is characterized in that the polystyrene-graft-succinic carboxylic acid resin is prepared by carrying out atom transfer radical polymerization and hydrolysis on functionalized polystyrene resin and maleic anhydride. The resin prepared by the method is high loading capacity carboxylic acid type cation exchange resin, also has a succinic acid structure unit having chelation action with transition metal. The carboxylic acid loading capacity of the carboxylic acid resin reaches to 0-15.2mmol/g-dry agent, and the loading capacity of succinic carboxylic acid reaches to 0-7.6mmol/g-dry agent.

The invention provides a catalyst for preparation of 2,3,5-trimethylhydroquinone by hydrogenation of 2,3,5-trimethylbenzoquinone and a preparation method of the catalyst. A precursor of the catalyst is composed of carboxylic acid functionalized polystyrene (PS) nanospheres and a zeolite imidazole framework (ZIF) composite structure with a shell layer containing Zn/Ni mixed metals, the precursor ofthe catalyst is subjected to pyrolysis in the N2 atmosphere at 800-1100 DEG C to remove the PS nanospheres to form a hollow structure, at the same time, metal Zn in the ZIF is removed to form a N-doped porous carbon structure, subsequent acid treatment is performed, and finally the N-doped porous carbon supported metal Ni catalyst having a hollow structure is obtained, wherein metal Ni accounts for 2%-10% of a total weight of the catalyst, and heteroatom N accounts for 2%-8% of the total weight of the catalyst. The catalyst provided by the invention has high catalytic performance when used for preparation of the 2,3,5-trimethylhydroquinone by hydrogenation of the 2,3,5-trimethylbenzoquinone.

The invention relates to the field of polymer preparation, in particular to a high syndiotactic vertical structure functionalized polystyrene polymer and a preparation method thereof, and solves the technical problems that the existing polar group containing functionalized syndiotactic vertical structure polystyrene has heteroatom functional groups, the polymerization activity of the catalysis system and the functional group distribution can be influenced to a certain degree. According to the method, a cyclopentadienyl rare earth compound is used as a catalyst; isopropenyl, alkane alkynyl, arylenealkyne or silicon alkynyl functional styrene monomers are directly subjected to homopolymerization; or copolymerization is performed with styrene; the novel structure high syndiotactic vertical structure functionalized polystyrene polymer is prepared. Experiment results prove that the syndiotactic selectivity of the high syndiotactic vertical structure functionalized polystyrene polymer provided by the invention is not lower than 90 percent; in addition, the insertion rate of the functionalized styrene can be freely regulated and can be up to 100 percent or above. Meanwhile, double-bond orthree-bond groups are contained in the polymers; other functional groups can be conveniently introduced on the groups.

The invention relates to a polystyrene sulfonate-silicon oxide hybrid solid acid catalyst and a preparation method thereof. Specifically, sulfonic acid functionalized polystyrene-silicon oxide composite nano hollow spheres comprise polystyrene sulfonate and silicon oxide [polystyrene:silicon oxide=(5-50 wt%):(50-95 wt%)], and has a hollow sphere morphology; the acid content is in a range of 0.5-3.0 mmol/g H<+>, the specific surface area is 50-600 m<2>/g, and the pore volume is 0.1-0.4 cm<3>/g. The preparation method comprises the following specific preparation steps: in an alkaline system, with a cationic surfactant as a structure-directing agent, polystyrene as a co-template, and sodium silicate (Na2SiO3) or tetramethyl orthosilicate (TMOS) or tetraethoxysilane (TEOS) as an inorganic silicon source, stirring, filtering, and drying to obtain the polystyrene-silicon oxide nano hollow spheres; and carrying out a reaction of the obtained polystyrene-silicon oxide nano hollow spheres with a sulfonation reagent, filtering, and drying to finally obtain the polystyrene sulfonate-silicon oxide hybrid solid acid catalyst. The method has a few of steps, and the use time is short.

The invention relates to a preparation method of a sulfonated polystyrene @ mesoporous silica microsphere with an egg yolk-shell structure. The preparation method mainly comprises the following stepsof: (1) using styrene (St) monomers as a raw material, and preparing a monodisperse polystyrene microsphere with a uniform particle size by adopting a soap-free emulsion polymerization method; (2) preparing a phenyl-functionalized polystyrene @ mesoporous silica microsphere with a yolk-shell structure; and (3) sulfonating the phenyl-functionalized polystyrene @ mesoporous silica microsphere by using chlorosulfonic acid to obtain ion exchange resin with a sulfonic acid group-modified polystyrene sphere kernel surface and a sulfonic acid group-modified silica shell surface. The synthesized polymer microsphere has a high specific surface area and a large pore volume, and has certain mechanical strength and chemical stability at the same time, the preparation method is simple, and has mild conditions and simple post-treatment, and the ion exchange efficiency of ion exchange resin can be improved.

The invention belongs to the field of water treatment and particularly discloses functionalized polystyrene microspheres, a preparation method and application thereof and a treatment method of aluminum-containing water. The functionalized polystyrene microspheres are prepared through gamma-ray radiation and/or electron beam irradiation; the functionalized polystyrene microspheres comprise polystyrene microspheres and polymer layers, which are polymerized from a functionalization monomer, bonded to surfaces of the polystyrene microspheres; the functionalization monomer is unsaturated acid. Whenthe functionalized polystyrene microspheres provided by the invention are used for treating aluminum-containing water, particularly aluminum-containing acidic aqueous solutions, the functionalized polystyrene microspheres not only can maintain sufficient stability and increase the removal efficiency of aluminum ions, but also can achieve the recycling of water, for example, the recycling of nitric acid can be achieved when the aluminum-containing water is an aluminum-containing nitric acid solution, and the emission of total nitrogen is lowered, so that the functionalized polystyrene microspheres have a great industrial application prospect.

The invention discloses a star-like sulfonic resin and a preparation method thereof, and belongs to the field of functional polymers. The method is characterized in that: the sulfonic resin is prepared by performing an ATRP reaction on functionalized polystyrene resin and styrene and performing a sulfonation reaction. The resin prepared by the method has a functional sulfonic group positioned in a star-like structure, and has higher freedom degree compared with a common sulfonic resin. The sulfonic group content of the sulfonic resin, namely a dry resin, can be up to 0.7 to 4.9 mmol/g.

The invention relates to the reaction of 1,3-butadiene and carbon dioxide. The invention aims at providing a catalyst for said reaction, which can be easily recovered and does not contaminate the final product. The invention also relates to a method for producing delta-lactone. According to the invention, a phosphinoalkyl-functionalized polystyrene is used to produce such a catalyst. The catalyst can be obtained by reacting phosphinoalkyl-functionalized polystyrene with (eta5-cyclopentadienyl) (eta3-allyl)palladium. The catalyst is used in the method to produce delta-lactone.

The invention discloses novel functionalized polystyrene resin. The novel functionalized polystyrene resin is prepared by performing a condensation reaction on aldehyde-based polystyrene resin and a primary amino-containing functionalization reagent, wherein a -CH=N- linking arm structure is formed between the aldehyde-based polystyrene resin and the primary amino-containing functionalization reagent, and a coplanar rigid structure is formed by the -CH=N- linking arm structure and a benzene ring in the polystyrene resin through conjugation. A preparation method of the novel functionalized polystyrene resin comprises the following steps: step 1, adding the dried aldehyde-based polystyrene resin (PSD) into an organic solvent, and performing swelling at room temperature; step 2, adding the primary amino-containing functionalization reagent H2N-Fg, performing uniform mixing, and performing a reaction for a period of time; and step 3, cooling the mixture obtained after the reaction in the step 2 is performed, performing filtration, washing the obtained solid, and performing drying. The functionalized polystyrene resin provided by the invention can also be prepared from the PSD and the H2N-Fg under solvent-free conditions. According to the novel functionalized polystyrene resin and the preparation method thereof provided by the invention, the preparation process is simple, and the functional group content per unit weight of the resin material is high.

The invention discloses a DGT adsorption film and a preparation method and application thereof, and belongs to the field of material preparation and compound monitoring. The DGT adsorption film is prepared from activated functionalized polystyrene/divinylbenzene (PEP-2, 40-60 [mu]m) resin particles and an agarose film forming solution through gelation. The prepared PEP-2 adsorption membrane, an agarose diffusion membrane and a polytetrafluoroethylene (PTFE) filter membrane are sequentially stacked and assembled into a DGT device, and the DGT device can be used for in-situ monitoring of 16 natural and synthetic glucocorticoid-like compounds in a water body. The adsorption film has the advantages of being simple in structure, reasonable in design and easy to manufacture.

The invention discloses a functionalized polystyrene polymer which has the following structural general formula: the functionalized polystyrene polymer provided by the invention can be used for preparing a polyelectrolyte material, and an obtained polyelectrolyte membrane has relatively high conductivity and has obvious practical application and industrialization prospects.

The invention discloses a rare earth nanomaterial containing a functionalized polystyrene shell. The rare earth nanomaterial comprises a core, a silica shell and the polystyrene shell; the core is rare earth luminescent nanoparticles, the silica shell is coated outside the core, and the silica shell is modified with double bonds; and the silica shell is coated with the polystyrene shell, and the polystyrene shell is modified with a functional group. The invention further discloses a preparation method of the rare earth nanomaterial containing the functionalized polystyrene shell. The rare earth nanomaterial containing the functionalized polystyrene shell has a good dispersity and a high stability, and can be applied to biological coupling, immunochromatography detection and hydrophobic molecule or nanoparticle embedding.

The invention provides an amino-functionalized polystyrene-based adsorption material which is prepared by taking chloromethylated polystyrene as a matrix and reacting with p-phenylenediamine under a mild condition. The obtained material has the advantages of being good in stability, large in adsorption capacity, controllable in functionalization degree, wide in applicable pH range and the like, and methyl orange in printing and dyeing wastewater can be efficiently removed. The amino-functionalized polystyrene material prepared by the method is simple and convenient to prepare, the raw materials are easy to obtain, and polystyrene adsorption materials for treating different methyl orange concentrations can be directionally produced by adjusting the amino functionalization degree; meanwhile, the obtained material is large in adsorption capacity and wide in applicable pH range, and has a wide market prospect.

The invention discloses preparation of sulfonic acid modified polystyrene microspheres and a method for catalyzing conversion of furfuryl alcohol into ethyl levulinate by using the sulfonic acid modified polystyrene microspheres, and belongs to the technical field of heterogeneous catalysis. The sulfonic acid functionalized polystyrene microsphere catalyst is prepared in a specific emulsion polymerization swelling mode, synthesis steps are simple, raw materials are cheap and easy to obtain, the specific surface area is large, and the raw materials are easy to recover; meanwhile, the catalyst can also be used for catalytic reaction, furfuryl alcohol is reduced into ethyl levulinate in a high-selectivity mode, the catalytic performance cannot be reduced after repeated use, and the requirement for green and sustainable development is met.