229 results about "Polymer adsorption" patented technology

The present invention relates to polymers modified to increase their resorbability. In particular, the polymers of the invention have phenyl ester side chains which are good leaving groups and which thereby increase the resorption rate of the polymer relative to the same polymer, for example, bearing a comparable amount of an alkyl ester side chain. Such polymers are generally water insoluble, but when modified are able to solublize drugs and upon degradation and resorption, release those in a physiological environment in a controlled and/or sustained manner.

The invention provides a viscosity-reducing type polycarboxylic acid water reducing agent for high-strength concrete, and belongs to the technical field of water reducing agents. The viscosity-reducing type polycarboxylic acid water reducing agent has the following general formula as shown in the description, wherein R' is selected from CH3 or H; R1 is selected from CH2CH2 or CH3CHCH2; R2 is small-molecule alcohol or alcohol amine with a hydroxyl group; a, b, c, m, n and g are all integers; a, b and c are taken from 1 to 50; m is taken from 5 to 150; n is taken from 20 to 110; and g is taken from 1 to 12. According to the viscosity-reducing type polycarboxylic acid water reducing agent for high-strength concrete, maleic anhydride, polyethylene glycol or polypropylene glycol, the small-molecule alcohol or alcohol amine and a phosphorylating reagent are adopted to prepare maleic anhydride modified phosphate ester for polycarboxylic acid water reducing agent synthesis, so that a phosphategroup of a specific structure is introduced into a molecular structure of the polycarboxylic acid to increase the polymer adsorption capacity and lower an LHB value; an effect of reducing the viscosity of the concrete is achieved by improving the capacity of a surfactant of the water reducing agent and weakening the interactivity between adsorption interfaces. Meanwhile, a functional monomer preparation process can be simplified and the production cycle can be shortened; and no expensive monomers are needed, and the production cost is reduced.

The invention relates to a water-soluble polymer adsorption material of a coupling cyclodextrin in the field of biomedical materials and an application thereof. The adsorption material comprises a coupling ligand which takes natural polysaccharide with amino or hydroxyl and derivatives thereof or chemosynthesis polymer as carriers and is characterized in that the molecule of the polymer adsorption material has the structure of formula (I). In the formula, R is chosen from natural polysaccharide with amino or hydroxyl and derivatives thereof or chemosynthesis polymer with the viscosity average molecular weight between 6KD and 500KD; X is chosen from C0-C6 alkane chain with O atom, N atom or OH group; CD is chosen from Beta-cyclodextrin or substitutional Beta-cyclodextrin. The adsorption material dissolved into a medical dialyzate can be applied to blood purification treatment for grave hepatitis patients. The adsorption material of the invention has the advantages of removing small molecular protein bound toxin and water soluble toxin molecular at the same time, low treatment cost which is only about one tenth of that of a molecular adsorption recycling system and low non-specificity adsorption of plasma protein.

The invention discloses a magnetic mesoporous silica surface-imprinted polymer adsorbing material and a preparation method thereof. The preparation method comprises the following steps: firstly, modifying magnetic mesoporous silica with a silane coupling agent; then grafting an initiator; finally, preparing a surface-imprinted adsorbing material through a surface imprinting technology and an activator generated by electron transfer atom transfer radical polymerization (AGET ATRP). The adsorbing material prepared in the invention is fast to adsorb rare earth ions, strong in selective adsorption, easy to separate and recover, and applicable to the adsorption and separation of the rare earth ions.

In present ivnention,l soaking method is used to make a hydrophilic polymer containing cation or amine group be adsorbed on the polymer membrane containing anion-active centre, then enzyme preparation or other reagent containing separation or catalytic activity are used to make treatment so as to form immobilized enzyme membrane. Said invention utilizes proper crosslinking reaction to raise stability of immobilized membrane. Said invention can adopt similar method to fix the substance with separation and catalytic activity on the polymer membrane to prepare active membrane with separation and synthesis functions.

The invention relates to a method for producing polyglucose, which comprises the following steps: (1) blending glucose, sorbitol and citric acid in a weight percent range of 80-90: 1-5: 9-15, then performing stirring reaction on the mixture for 3 to 8 hours in a reaction kettle at the temperature of between 150 and 200 DEG C under the negative pressure of between 0.02 to 0.06MPa, and performing polymerization reaction on the mixture to obtain a polymer; (2) adsorbing and decoloring the polymer; and (3) spray-drying the polymer to obtain a finished product of the polyglucose. The producing method solves the difficult problems of complex existing production process, incomplete polymerization reaction, low product purity, poor color and luster and the like, and has the advantages of rich raw material source, simple process, high purity of the finished product, adaptability for large-scale industrialized production and the like; and electric heating is adopted during processing, and the water vapor produced in the polymerization reaction is condensed and discharged, so the whole production process reflects the advantages of no waste gas emission, no pollution, little consumed energy, simple process and energy conservation.

The present invention discloses a manufacturing method of high permeability adsorption lining paper. It uses natural wood pulp as raw materials and includes brashing pulp, desanding, easing, papermaking and other steps. It is characterized by: said wood pulp is mixed by coniferous pulp and broadleaf pulp, the weight ratio of coniferous pulp is 80-90% and thereof broadleaf pulp is 10-20%, the beating current is 320-340A and the papermaking screening concentration is 0. 05%. The adsorption lining paper prepared through the invention has good air permeability, the polymer adsorption is uniform, the wet strength is high, particularly it is suited for one-time adsorption pet supplies, such as women's sanitary napkins, baby paper diaper and pet pad.

The invention relates to a water soluble cationic polymer adsorption material in the biomedical material field and the application thereof, which contains the quaterisation reaction synthesis of natural polysaccharides with amino groups and hydroxyls and the derivatives thereof or chemosynthetic polymers. The invention is characterized in that the molecule of the polymer adsorption material has a structure in formula I: in the formula, R is selected from the natural polysaccharides with amino groups and hydroxyls and the derivatives thereof or the chemosynthetic polymers, the molecular weight of which is from 6 KD to 500 KD; X is selected from a C0 to C6 paraffinic chain with O atoms, N atoms or OH groups; R1, R2 and R3 are selected from a C1 to C4 alkyl group. After the adsorption material is dissolved in a medical dialysis solution, the material can be applied to a blood purification treatment for severe hepatitis patients. The invention has the advantages of removing protein-bound toxin and water soluble toxin molecule at the same time, low cost which is only about one tenth of that of a molecular adsorbent recirculating system and little nonspecific adsorption to plasma protein.

The invention discloses a porphyrin group-containing conjugated microporous polymer and a preparation method thereof, The prepared conjugated microporous polymer has the inherent properties of large specific surface area, narrow pore size distribution, high physical and chemical stability, low skeleton density and the like, and shows a quite excellent adsorption capability on vapor molecules (likebenzene, methylbenzene, cyclohexane and vapor). Compared with the traditional adsorption material, the porphyrin group-containing conjugated microporous polymer facilitates the implementation of thereversible processes of capturing and releasing organic vapor through physical adsorption, and the vapor adsorbed by the polymer is capable of separating the vapor from a skeleton of the polymer through simple vacuum drying, so that the possibility of recycling materials is realized, and the recycling and reutilization of a solid adsorbent are facilitated. In addition, the method provided by the invention is simple, the cost of raw materials is low, and the porphyrin group-containing conjugated microporous polymer is suitable for large-scale industrial production.

The invention discloses an elastic hydrophobic organic conjugated polymer, a synthesizing method thereof and an application thereof to removing of organic matters from water. The synthesizing method comprises the following steps of: connecting a benzene ring with an acetylene bond; particularly adding a catalyst, a nonpolar solvent and the like into 1.4-diacetylene-benzene and a 1,3,5-tribromobenzene derivative or a 1,3,5-triiodo benzene derivative serving as substrates in an inert atmosphere; undergoing a polymerization reaction; and filtering, washing, drying and the like to obtain a product. The product is centimeter grade or millimeter grade elastic particles containing a plenty of mesopores and gaps, so that material density is very low; and meanwhile, the copolymer has high elasticity and high hydrophobic property. When adsorption of liquid organic matters is saturated in the polymer, the polymer is taken out of an aqueous solution, organic matters are removed through mechanicalextrusion, and polymer particles can be used repeatedly, so that the cost on removal of the organic matters from water is lowered. The elastic hydrophobic organic conjugated polymer is suitable for batch production and environmental protection.

The invention relates to an integrated porous polymer adsorption extraction stirring bar and its manufacturing method. The stirring bar comprises a stirring magneton and a coat coated outside the stirring magneton, wherein the coat is an acrylonitrile-ethylene glycol acrylate-itaconic acid copolymer. A mixed solvent of dimethyl formamide and caprolactam is added to a reaction system as a pore forming agent, azodiisobutyronitrile is used to carry out thermal initiation of an in-situ free radical polymerization reaction, and a prepared integrated porous material is adopted as the coat of the adsorption extraction stirring bar, so the adsorption extraction stirring bar has the advantages of rapid adsorption and desorption rates, large extraction capacity, and realization of the adoption of an equilibrium extraction mode of solid phase micro-extraction or a depleted extraction mode of solid phase extraction. The ethylene glycol acrylate which is a crosslinking agent improves the mechanical performances of the coat of the stirring bar and prolong the service life. The itaconic acid which is a modifier makes the extraction coat contain a plurality of carboxyl groups, and can directly adsorb and extract parts of heavy metal cations and polar organic compounds. The preparation method is simple and can be easily operated.

The invention discloses a porous polymer adsorption material containing triazine ring and azo bond functional groups, and a porous polymer catalysis material, and preparation methods and applicationsthereof. 2,4,6-tris(4'-aminophenyl)-1,3,5-triazine and diphenol and/or trisphenol, which are used as raw materials, undergo diazo coupling polymerization cross-linking to obtain the porous polymer adsorption material. The porous polymer adsorption material has the charateristics of high specific surface area, high nitrogen element content, high micro-pore proportion, good affinity to carbon dioxide and good adsorption performance, and a metal ion supported porous polymer adsorption material obtained after loading metal ions on the porous polymer adsorption material has the advantages of mild reaction conditions, short reaction time, realization of the yield reaching 95% or above, and no obvious reduction of the yield using the recycled catalyst when used to catalyze a reaction of carbon dioxide and epoxypropane for generating propylene carbonate, and is expected to be used in actual industrial production.

An object of the present invention is to provide a biochemical instrument having a surface that can simultaneously inhibit adsorption of a biopolymer and that of a hydrophobic low-molecular-weight compound. The present invention provides a biochemical instrument comprising a region that inhibits adsorption of a hydrophobic low-molecular-weight compound and a region that inhibits adsorption of a biopolymer on the surface of a water-insoluble material.

The invention discloses a pyridinium group-containing moderate-polarity skeleton adsorption resin and a preparation method thereof, and belongs to the technical field of polymer adsorption resin. The resin has the grain size of 0.3-0.85mm, the water content of 55 to 70 percent, the weak basic exchange capacity of 1.0-4.0mmol/g, the specific surface area of 200-750m<2>/g and the average pore size of 3-12nm. The preparation method comprises the following steps: 1, dissolving a dispersing agent and NaCl in water to obtain an aqueous phase; 2 making vinylpyridine, a cross-linking agent, a pore-forming agent, a regulator and an initiator form an organic phase; and 3, sequentially adding the aqueous phase and the organic phase into a reactor, introducing nitrogen to remove oxygen from the reactor, stirring until the organic phase is dispersed to proper grain size in the aqueous phase and temperature rise reaction is carried out, cooling to room temperature, steaming out the pore-forming agent, washing and drying. The resin has a good effect of removing organics with moderate polarity and polarity, and can be used for treating related wastewater; and synthesis steps for the resin are simple, and the monomer conversion rate is high.

The invention relates to potassium amino polymer strong-inhibition anti-collapse drilling fluid for an argillaceous siltstone stratum. The potassium amino polymer strong-inhibition anti-collapse drilling fluid is prepared from the following components in percentage by weight: 1-1.5 percent of a potassium-amino polymer, 1-1.5 percent of an acid soluble fluid loss agent G310-SJS, 1.0-2.0 percent of sulfonated bitumen, 1-2 percent of a blocking agent, 0.3-0.6 percent of high-viscosity polyanionic cellulose PAC-HV, 0.3-0.6 percent of low-viscosity polyanionic cellulose PAC-LV, or A weighting agent optionally added according to actual requirements and of which a pH value is controlled to be 9-10 by using a basicity control agent, and the balance of water. The potassium-amino polymer is adsorbed on the surface of rock debris at multiple points, and positive point groups are introduced in a certain proportion, so that the adsorption capability is high, the rock debris can be effectively coated, thereby being easily cleared away by using solid control equipment, the low solid phase of the drilling fluid can be realized; in addition, the polymer is high in adsorbability so that a hydrate adsorption layer of the polymer is formed on a well wall to constrain a clay intercalation, thus achieving the effect of stabilizing the well wall.

The invention provides a horizontal well film-coated proppant staged fracturing yield testing method. The method comprises the steps that a tracer is synthesized into nanocrystals through colloid by adopting a quantum dot technology, then the nanocrystals are marked in a polymer, the polymer is adsorbed on the surface of a proppant to form a polymer coating, a fracturing fluid is utilized to carrya quantum dot polymer coating proppant to be added into a stratum during horizontal well staged fracturing, a combination of quantum dot tracer markers is judged by using laser to irradiate particlesin a liquid flow through stratum fluid sampling after production, and the oil production and water production contributions of all layer sections are accurately calculated. The service validity period of the quantum dot tracer markers is as long as 2 years. The polymer comprises a water-soluble polymer and an oil-soluble polymer at the same time, when the polymer encounters a stratum fluid, the quantum dot tracer markers marked on the oil-soluble polymer exist in an oil phase, the quantum dot tracer markers marked on the water-soluble polymer exist in a water phase, and the oil-water phase distribution coefficient is stable.

The invention relates to a carboxyl terminated dendritic polymer adsorption material and a preparation method thereof. The dendritic polymer has a network spherical three-dimensional structure, and can greatly improve the adsorption efficiency as an adsorption material. The preparation method includes: dissolving cyanuric chloride in acetone or tetrahydrofuran, adding the mixture into an acetone solution of diol to obtain a primary hydroxy terminated dendritic polymer crude product, conducting purification to obtain a primary hydroxy terminated dendritic polymer; taking cyanuric chloride as the core, adopting the primary hydroxy terminated dendritic polymer as the branching unit to prepare a secondary hydroxy terminated dendritic polymer crude product and a tertiary hydroxy terminated dendritic polymer crude product, and carrying out purification; and dispersing the hydroxy terminated dendritic polymer in water, adding maleic anhydride and p-toluenesulfonic acid to prepare a carboxyl terminated dendritic polymer crude product, and conducting purification to obtain the carboxyl terminated dendritic polymer adsorption material. The method provided by the invention has the characteristics of mild conditions, simple process and short production cycle. The product contains a lot of active carboxyl terminal groups, has strong adsorption performance, and is expected to be used in heavy metal ion and organic wastewater treatment and other fields.

The invention relates to a phosphonic acid group-containing chelated resin, and a polymer adsorbent prepared from bis(2-methacryloxyethyl) phosphate through solvent thermal polymerization. A preparation method comprises following steps: 0.5 to 2g of bis(2-methacryloxyethyl) phosphate and 0.05g of azodiisobutyronitrile are added into 1 to 15ml of an organic solvent, an obtained mixture is stirred for 1 to 3h at 25 DEG C, an obtained solution is introduced into a hydro-thermal reaction vessel, reaction is carried out for 24h at 100 DEG C, an obtained product is taken out from the hydro-thermal reaction vessel, is subjected to rotary evaporation to remove the organic solvent, and is subjected to vacuum drying for 12 to 24h at 45 DEG C so as to obtain the phosphonic acid group-containing chelated resin. The invention also discloses a method used for separation and enrichment of thorium at a high acidity with the phosphonic acid group-containing chelated resin. According to the method, theH<+> concentration of a thorium-containing aqueous solution to be processed is adjusted to 1 to 8mol/L, the phosphonic acid group-containing chelated resin is added, shaking is carried out, and absorption is carried out. The phosphonic acid group-containing chelated resin is simple in the preparation method; operation is convenient; few by-products are produced; and the phosphonic acid group-containing chelated resin can be recycled.

The invention discloses a magnetic cyclodextrin-based crosslinked polymer adsorption material and a preparation method thereof. According to the material, magnetic ferroferric oxide microspheres are used as inner cores, cyclodextrin, epichlorohydrin and polyethylene polyamine are used as raw materials, dialdehyde is used as a crosslinking agent, and core-shell magnetic adsorption polymer microspheres are prepared by using crosslinking active polymer layers for coating online through a reversed-phase microemulsion method. The obtained adsorption material contains not only abundant active groupssuch as amino groups, imine groups and hydroxyl groups but also ferroferric oxide microsphere inner cores with strong magnetism and cyclodextrin units capable of forming clathrate compounds with organic pollutants. The material solves the problems that traditional adsorbents are poor in heavy metal-organic matter composite pollutant disposal effect, low in efficiency and high in cost, heavy metaland organic pollutants in wastewater cannot be removed synchronously, particularly, the separation and recovery of the adsorbents after disposal are difficult, and it is difficult to automatically control the operation and achieve continuity. The adsorption material is suitable for disposing different kinds of wastewater containing heavy metal, organic matter and heavy metal-organic matter composite pollutants.

The invention provides a radiation synthesis method for chelate adsorption materials, relates to a preparation method of high-polymer adsorption resin, and in particular to a radiation synthesis method for chelate adsorption materials to divalent and trivalent harmful metal cations in water. The radiation synthesis method includes irradiating high-polymer substrate by ionizing radiation to generate active radical; subjecting radiated high-polymer substrate and glycidyl methacrylate intermediate monomer to graft polymerization reaction; and introducing function groups such as imino group diacetoxyl and phosphate group which are easy to form chelate with divalent and trivalent metal cations in water by epoxy ring-opening reaction so as to obtain chelate adsorption resin. The synthesis method is high in grafting efficiency and low in environmental load, and graft products do not contain organic solvents, synthetic products have high-speed efficient adsorption capacity, service cost is reduced, comprehensive economical benefit is remarkable, and the synthetic products are particularly suitable for efficient adsorption to divalent and trivalent metal ions in water in low-concentration environments, and can be popularized and used as the chelate adsorption materials to divalent and trivalent harmful metal cations in water.

The invention relates to polyamidoxime-based chelating resin for extracting uranium from seawater and a preparation method thereof, and is characterized in that the polymer chelating resin is preparedby adopting a solvothermal method, and a chelating group is amidoxime; amidoxime styrene and ethylene glycol dimethacrylate are copolymerized under a solvothermal condition, and high-concentration amidoxime is immobilized on a polymer skeleton, so that the amidoxime chelating resin adsorbing material is prepared, and the amidoxime chelating resin adsorbing material is applied as a polymer adsorbent for separating and enriching uranium from seawater. The preparation route of the synthesized polyamidoxime-based chelating resin is simple and easy to operate. Meanwhile, the adsorbent has the advantages of being high in adsorption capacity, large in adsorption capacity, high in adsorption speed and the like when used for separating and enriching uranyl ions in seawater, is easy to separate from an aqueous solution, and can effectively adsorb and recover uranyl ions in the seawater solution.

The present invention discloses a double protection type perforation fluid, which comprises the following components, by mass, 100 parts of water, 0.2-0.5 part of a tackifier, 0.8-2 parts of a filtrate reducer, 2-3 parts of an anti-swelling agent, 0.05-0.15 part of a surface active agent and 0.05-0.2 part of a gel breaker. The double protection type perforation fluid has the following characteristics that: the double protection type perforation fluid has a certain viscosity so as to provide good effects of cleaning and chip carrying while ensure pumping; filter loss is low so as to minimize damage on stratum by the filtrate; anti-swelling rate is high so as to inhibit clay hydration expansion; interfacial tension is low so as to facilitate fluid flowback and reduce water blocking damage; with automatic polymer degradation and gel breaker application, damage caused by polymer adsorption are eliminated; and core permeability recovery rate is high, and a good protection effect is provided for the oil layer so as to solve problems of damage on the stratum and environment pollution caused by stratum pore channel surface absorption of high molecular polymers in the polymer perforation fluid polymer.