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Dispersion polymerization of anionic polyacrylamide in an. 2010-08-03· Anionic polyacrylamide dispersions were prepared by dispersion polymerization in an aqueous salt medium, using acrylamide(AM) and acrylic acid(AA) as monomers and anionic polyelectrolytes as stabilizer.
Get PriceAnionic polyacrylamide - wastewater treatment chemicals. Description. Anionic polyacrylamide is the kind of wastewater treatment chemicals which is water-soluble linear polymer synthesized with high degree of polymerization.Anionic polyacrylamide powder is easily soluble in water and almost insoluble in common organic solvents such as benzene, ether, lipids and acetone.
Get Price2021-5-31 · dispersant anionic polyacrylamide paper-making dispersant. Ultra high molecular weight anionic polyacrylamide polymer is a water-soluble organic polymer, soluble in water and forms a highly viscous liquid, at low addition amount can promote good dispersion of papermaking fibers and excellent sheet formation, improve pulp evenness and the softness of the paper, but also increased the strength ...
Get PricePreparation of high purity, anionic polymerization grade alkyl methacrylate monomers R. D. Allen, Timothy Edward Long, J. E. McGrath Research output : Contribution to journal › Article › peer-review
Get PriceAlibaba offers 223 high purity polyacrylamide pam products. About 71% of these are paper chemicals, 57% are petroleum additives, and 52% are leather auxiliary agents. A wide variety of high purity polyacrylamide pam options are available to you, such as coating auxiliary agents, water treatment chemicals, and paper chemicals. High Purity . Get ...
Get PriceNonionic Polyacrylamide high purity cationic PAM. Water Treatment Chemicals: high purity Anionic. 1.polyacrylamide 2.with high molecular weight 3.good flocculant 4.sample is available Anionic Polyacrylamid Description: Polyacrylamide product details: PAM for the water-soluble polymers, insoluble in most organic solvents, has good flocculation, can reduce the friction between the liquid
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Get PriceDispersion polymerization is defined as a heterogeneous polymerization process that starts from a homogeneous solution of all the starting materials (i.e., monomer, initiator, stabilizer, additive, etc.), whereas the polymer microspheres precipitate out during the progress of the polymerization [128]. Accordingly, the polymerization should be ...
Get PriceEP0648790B1 EP19940116325 EP94116325A EP0648790B1 EP 0648790 B1 EP0648790 B1 EP 0648790B1 EP 19940116325 EP19940116325 EP 19940116325 EP 94116325 A EP94116325 A EP 94116325A EP 0648790 B1 EP0648790 B1 EP 0648790B1 Authority EP European Patent Office Prior art keywords weight block polymerization percent monomer Prior art date 1993-10-18 Legal status (The …
Get Pricewelcome anionic pam high flocculant paper industries chemical. 2011 hot sale anionic pam chemicals high flocculant paper industries chemical Polyacrylamide is, simply called PAM, a water- soluble high polymer and widely used in petroleum, paper-making, metallurgical, textile, …
Get PriceEasyfloc Anionic Polyacrylamide, it is anionic flocculant, polymer, also said anionic polyelectrolyte, it is high-molecular polymer and has such properties as flocculability, thickening, shear, resistance diminishing, and dispersion. There are active genes in the molecules.
Get Price2021-6-11 · High efficiency Cohesion Agent polyacrylamide flocculant used in mining. High efficiency Cohesion Agent polyacrylamide flocculant used in mining, US 1500 - 3500 Ton, Chemical Auxiliary Agent, 9003-05-8, polymer.Source from Liaocheng City Yongxing Environmental Protection Material Co., Ltd. on . For Free enquiry.
Get Price2019-7-5 · The additional adsorption peak at 1040 cm –1 on the composite materials corresponds to the SO 3 group from 1,3-propane sultone, leading to the formation of anionic character of the zwitterionic rGO–COPAM structure that promotes the dispersion stability in the presence of high ionic strength brines. 28,50,51 TGA was carried out between 25 ...
Get Pricepolyacrylamide price, polyacrylamide price Suppliers. cation/nonionic/anionic polyacrylamide price/PAM with free sample polyacrylamide powder 25085-02-3 Super White Polyacrylamide Colorcom high purity PAM for Chemical Industry The top countries of suppliers are South Africa, China, and Indonesia, from which the percentage of polyacrylamide price supply is 1%, 96%, and 3% respectively.
Get PriceSome studies reported that the time taken to reach the maximum molecular weight of polyacrylamide in aqueous polymerization initiated by heat was over 5.0 h . Obviously, it was much higher than the polymerization time initiated by UV light. In addition, similar results were also reported in dispersion polymerization . In this sense, the ...
Get PriceBlufloc Polyacrylamide (PAM) Polyelectrolyte is water soluble polymer with Anionic, Cationic and Nonionic types. The range of molecular weight is different, Anionic is from 5-22 million, Cationic is from 5-12 million and Nonionic is from 5-12 million, with a charge density ranging from 0-60%.
Get PriceA copolymer of acrylamide (AM) with acryloyloxyethyl trimethyl ammonium chloride (DAC) as the cationic monomer was synthesized under the irradiation of high-pressure mercury lamp with 2,2-azobis(2-amidinopropane) dihydrochloride (V-50) as the photoinitiator. The compositions of the photoinduced copolymer were characterized by Fourier transform infrared spectra (FTIR), ultraviolet spectra (UV ...
Get PriceEasyfloc Anionic Polyacrylamide, it is anionic flocculant, polymer, also said anionic polyelectrolyte, it is high-molecular polymer and has such properties as flocculability, thickening, shear, resistance diminishing, and dispersion. There are active genes in the molecules.
Get Price2018-8-1 · 1. Introduction. Dispersion polymerization has been the technique of choice for the preparation of microspheres (200 nm to several μm) that find widespread applications in coating, bioassay, print ink, separation, and catalyst support [].Key to the formation of stable and uniform microspheres is effective stabilization of the nascent particle seeds during the highly sensitive nucleation stage ...
Get Price2020-5-7 · radical polymerization is carried out to yield an inverse latex, i.e. a colloidal dispersion of water swollen polymer particles in oil. Such a process is well suited to the prepara-tion of high molar mass polymers at rapid reaction rates [12,13], due to the high local monomer concentration within
Get PriceThe invention discloses an industrial manufacturing technology of polyacrylamide (over 25,000 thousand molecular weights), which is characterized by the following: introducing functional monomer under insulation condition; finishing polymerization reaction through synergic action of three-segmented composite initiator; grinding; graining; hydrolyzing; drying; breaking; screening; improving ...
Get PriceDescription. Anionic polyacrylamide is the kind of wastewater treatment chemicals which is water-soluble linear polymer synthesized with high degree of polymerization.Anionic polyacrylamide powder is easily soluble in water and almost insoluble in common organic …
Get PriceDisclose is a water soluble anionic polymer dispersion containing a radical copolymer created in water salt which includes anionic monomer, non-ionic monomer, ionic dispersant and radical polymerization initiator, and anionic surfactant or non-ionic surfactant. Also disclosed is a water soluble anionic polymer dispersion is characterized by containment of radical copolymer created in salt ...
Get Price2021-4-19 · This research focuses on the synthesis and characterization of a new form of hydrophobic modified polyacrylamide copolymer. The new copolymer is synthesized in the laboratory using an alternative polymerization process for acrylamide and para-isobutyl-N-phenylethyl acrylamide reactions. The prepared copolymer is characterized by Fourier transform infrared (FTIR) and proton nuclear …
Get PriceThe invention discloses a hydrophobic associated anionic polyacrylamide water-in-water emulsion and a preparation method thereof. The hydrophobic associated anionic polyacrylamide water-in-water emulsion is prepared by initiating and polymerizing a water solution system which comprises inorganic salt, nonionic monomers, anionic monomers, hydrophobic monomers, a stabilizer, a chelating agent ...
Get Price2020-5-7 · radical polymerization is carried out to yield an inverse latex, i.e. a colloidal dispersion of water swollen polymer particles in oil. Such a process is well suited to the prepara-tion of high molar mass polymers at rapid reaction rates [12,13], due to the high local monomer concentration within
Get PriceDescription. Anionic polyacrylamide is the kind of wastewater treatment chemicals which is water-soluble linear polymer synthesized with high degree of polymerization.Anionic polyacrylamide powder is easily soluble in water and almost insoluble in common organic …
Get PriceDisclose is a water soluble anionic polymer dispersion containing a radical copolymer created in water salt which includes anionic monomer, non-ionic monomer, ionic dispersant and radical polymerization initiator, and anionic surfactant or non-ionic surfactant. Also disclosed is a water soluble anionic polymer dispersion is characterized by containment of radical copolymer created in salt ...
Get PriceHigh Purity Flocculant PAM Used as Chemcial Mudding Agent. Polyacrylamide, Anionic Polyacrylamide, Cationic Polyacrylamide manufacturer supplier in China, offering High Purity Flocculant PAM Used as Chemcial Mudding Agent, Activated Carbon for Air Purification & Gas Mask, Sand Blasting Brown Fused Alumina/Abrasive Material and so on.
Get Price2021-7-6 · advantages of anionic polyacrylamide in india | Buy Waste Water Treatment Agent at factory price. Anionic Polyacrylamide, Anionic Polyacrylamide Anionic Polyacrylamide CAS No. 9003-05-8 Purity 90% Usage: Used in petroleum, sugar making, mill run, papermaking, hydrometallurgical concentration, food and building, the treatment of sewage and
Get PricePolyacrylamide (PAM, Mw 10,000) is a low molecular weight nonionic water-soluble polymer used as an additive in CMP slurries, various printing applicatons, and
Get Price2021-4-19 · This research focuses on the synthesis and characterization of a new form of hydrophobic modified polyacrylamide copolymer. The new copolymer is synthesized in the laboratory using an alternative polymerization process for acrylamide and para-isobutyl-N-phenylethyl acrylamide reactions. The prepared copolymer is characterized by Fourier transform infrared (FTIR) and proton nuclear …
Get Price2021-5-22 · Europe PMC is an archive of life sciences journal literature. This review article aims to cover the most recent advances regarding the synthesis of linear ABC-type triblock terpolymers and star-shaped polymers by RAFT polymerization, as well as their self-assembly properties in aqueous solutions.
Get PricePolyacrylamide nonionic water-soluble polymer Sigma. Polyacrylamide is used in the preparation of acrylamide gels for separation of proteins. Packaging 10, 50 g in glass bottle Biochem/physiol Actions Polyacrylamide is a water-soluble polymer made up of acrylamide subunits.
Get Price2000-8-8 · The apparent orders of the rates of polymerization with respect to the initiator and monomer concentrations were estimated to be 0.64 and 1.7, respectively. The rate and degree of polymerization were quite high compared with other allyl monomers. The …
Get PriceAnionic Polyacrylamide Chemicals Flocculant Water Treatment. Anionic polyacrylamide (APAM) series products are water-soluble linear polymers synthesized under high degree polymerization, easily soluble in water, almost insoluble in the benzene, the ether, the aliphatics, the acetone and other common organic solvents.
Get Price2014-11-1 · Hence, the use of ultrasound for an initiation of emulsion polymerization has the advantage to synthesis the polymer products with high purity , . Ultrasound is found to be one of the most efficient methods for the preparation of stable monomer droplets without any aggregation during the emulsion polymerization process [6] , [53] .
Get PriceHigh Purity Flocculant PAM Used as Chemcial Mudding Agent. Polyacrylamide, Anionic Polyacrylamide, Cationic Polyacrylamide manufacturer supplier in China, offering High Purity Flocculant PAM Used as Chemcial Mudding Agent, Activated Carbon for Air Purification & Gas Mask, Sand Blasting Brown Fused Alumina/Abrasive Material and so on.
Get Price2016-4-1 · By designing the thermal polymerization of sucrose/polyacrylamide hydrogel, this work provides a new precursor to obtain carbon foams with high carbon yield (94.96% of the theoretical value). In addition, the anionic surfactant SDS is firstly used to prepare carbon foams from liquid foams, resulting in the controlled structure and properties.
Get Price2019-5-1 · Considering the reaction features, a microreactor is designed to carry out the reaction, as shown in Fig. 1(a). In this platform, the acrylamide aqueous solution and the K 2 S 2 O 8 solution mix first in a T-junction connector, which was made from polyetheretherketone, (PEEK, a chemically inert material, purchased from DaXiang Plastics, China) and had a 0.5 mm inner diameter (ID).
Get Price2002-12-1 · Fig. 1 shows a trend of world PVC demand from 1990 to 1997 and prediction to 2003 .Annual growth rate of world PVC demand from 1990 to 1997 was 4.4%. Moderate growth rate after 1997 was predicted as 3.8% per year. In North America, USA and Canada, PVC demands are growing continuously at a rate of about 3% per year.
Get PriceA process for preparing a water-soluble polymer dispersion is herein provided which is characterized by polymerizing from about 10 to 50 mole percent of a monomer having a formula (II); from about 1 to 50 mole percent of N-alkylacrylamide, N,N-dialkylacrylamide or mixtures thereof; having a formula (III) from about 1 to 70 mole percent acrylamide; and optionally up to about 4 mole percent of a ...
Get Price2019-2-1 · Graphene oxide (GO) can be obtained from the oxidation and exfoliation of graphite, generally in an aqueous solution, yielding hydrophilic carbon-based sheets that are decorated with various oxygenated functional groups 1, ∗2.Research surrounding this material surged after the discovery of graphene as GO was posited to offer a chemical route to scalable graphene production .
Get Price2000-8-8 · The apparent orders of the rates of polymerization with respect to the initiator and monomer concentrations were estimated to be 0.64 and 1.7, respectively. The rate and degree of polymerization were quite high compared with other allyl monomers. The …
Get PriceThe invention relates to a preparation method of cationic polyacrylamide. The cationic polyacrylamide is prepared by the following steps of: adding a certain amount of solubilizing agent and complexing agent into acrylamide (AM) and aqueous solution of two cationic monomers; regulating the pH value of a reaction system; then adding a certain amount of initiator; and performing the ...
Get Price2020-12-1 · Although this approach bypasses the synthesis of a precursor, the problem of solvent change always remains, which implies undesired use of organic solvents and surfactants. 18 Alternatively, one can make use of (surfactant-free) dispersion polymerization in water, but this method is restricted to systems with a high content of “Lower Critical ...
Get Price2016-12-26 · Dyeing wastewater with high chroma and high COD value seriously pollutes the water environment, and this issue has become a global problem [1,2,3].Compared to the removal of insoluble pollutants in most reported literature (e.g., removal of suspended particles), it is especially difficult to remove water-soluble dyes with high dispersion and high stability in the water phase [], which has ...
Get Price2021-4-1 · Process for making non-thermoplastic starch fibers: Dry spinning of starch aqueous dispersion with high temperature attenuating air flow: US7276201 (2007) Method for making polymeric structures: Making fiber products from starch, PVOH, and a crosslinking agent (imidazolidinone) and further adding of cellulose fibers: US7744791 (2010) Method for ...
Get Price2012-7-6 · The structure-dependent re-dispersibility of graphene oxide powder obtained from the spray drying process was proposed. By controlling the feed concentration above the threshold value (0.8 mg·ml-1), the GO nanosheets tend to assemble in a relatively oriented structure, which possesses a low crumpling degree and good redispersibility even with a high drying temperature (200°C) (see Shi et al.
Get PriceThe disposal of a large amount of polymer waste is one of the major challenges of this century. Use of biodegradable polymers obtained from sustainable sources presents a solution to this problem. Poly lactic acid (PLA), a biodegradable polymer, can
Get PriceWe claim: 1. A method of making silicone-vinyl copolymer which comprising: (a) mixing (1) free radically polymerizable monomer mixed, if needed, with sufficient solvent to produce a charge which possesses a net dielectric constant greater than about b 2.5, (2) a mercapto functional silicone compound represented by the formula ##STR20## wherein R 1 are monovalent moieties which can ...
Get PricePolypropylene (PP), also known as polypropene, is a thermoplastic polymer used in a wide variety of applications including packaging and labeling, textiles (e.g., ropes, thermal underwear and carpets), stationery, plastic parts and reusable containers of various types, laboratory equipment, loudspeakers, automotive components, and polymer banknotes.
Get Price2015-3-22 · Polymerization. techniques Process conditions: Homogeneous polymerization: a) Bulk b) Solution 2. Heterogeneous polymerization a) Suspension b) Emulsion 1.. Concerning: Molecular Weight Rate (kinetics) Heat effects (thermodynamics) Bulk polymerization The. bulk addition polymerization is the simplest of all polymerization processes Bulk polymerization is the conversion of monomer into a ...
Get PriceThe process includes a first polymerization step wherein a first hybrid polymer dispersion is formed by addition polymerization of vinyl monomers in the presence of dispersed auto-oxidatively crosslinkable polymer and a second polymerization step wherein secondary polymerization loci are provided in the first hybrid polymer dispersion to ...
Get PricePotash is the main source of Potassium which is one of the three basic plant nutrients along with nitrogen and phosphorus. Between 60 to 80% of the potash ore is processed by flotation, the other two important unit operations are hot or cold crystallization and electrostatic separation. Almost all the published literature on potash flotation refers to the insoluble minerals as 'collector ...
Get PriceA process for making paper, comprising contacting an anionic binder with a cationizing agent to make a cationized binder, contacting the cationized binder with an anionic pigment to form a binder/pigment agglomerate, contacting the agglomerate with an aqueous slurry of …
Get PriceThe apparent orders of the rates of polymerization with respect to the initiator and monomer concentrations were estimated to be 0.64 and 1.7, respectively. The rate and degree of polymerization were quite high compared with other allyl monomers. The …
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Get PriceExtraction and modification of cellulose nanofibers derived from biomass for environmental application. Mridula Prakash Menon a, R. Selvakumar * a, Palaniswamy Suresh kumar * b and Seeram Ramakrishna * c a Nanobiotechnology Laboratory, PSG Institute of Advanced Studies, Coimbatore, India-641004. E-mail: [email protected] b Environmental & Water Technology Centre of Innovation (EWTCOI ...
Get Price2021-6-13 · In 1999 Cumpston et al. performed two-photon polymerization with photoinitiators of high two-photon absorption cross section [14]. Kawata et al. fabricated microdevices at a minimum feature size of 120 nm [15], and Straub et al. produced photonic crystal devices [16] as well as other sophisticated 3D structures [17].
Get Price1.4 Polymers in Supercritical Carbon Dioxide (scCO2) Carbon dioxide (CO2) is the most commonly used supercritical fluid because of its low critical temperature, low toxicity and high purity at a low cost. It is nonflammable and its use does not contribute to the net global warming effect.
Get Price2021-4-5 · The high quality of the supports and catalysts in relation to their structure, texture, size and dispersion of the metal oxides was proved by XRD and N2 physisorption. The surface chemistry of samples (i.e. the identification of the organic functions, as well as the metallic cations environments) was analysed by thermogravimetry and DR-UV-Vis-NIR.
Get Price2021-2-19 · Process type Data source Folder Treatment, standards, routes ... LED SMD high-efficiency with lens max 0.5A (235mg) Flip Chip 9.0x7.0x4.4 235mg, Flip Chip 9.0x7.0x4.4 ... Sheep wool yarn (from Europe (EU) sheep wool) Products via washing and …
Get Price2019-5-11 · Qualified, high-purity glycolide, L-lactide, or DL-lactide monomer (300 grams) and an appropriate amount of chain control agent for the desired molecular weight is charged to the flask. The resin kettle is then closed, removed from the glove box, and immediately connected to a low flow source of dry, high-purity nitrogen as a continuous purge.
Get Price2021-6-15 · White Cationic Polyacrylamide Emulsion , High Molecular. Our Cationic polyacrylamide Emulsion EC-8040 grade (CPAM) is a water based polymer. Anionic Polyacrylamide has a big range of high molecular weight from 6-12 million, with an anionic charge density ranging from 10-60%. EC-8040 grade has high molecular weight, and medium to high charge degree.
Get PriceN/A. Super Absorbent polymers or SAP, also known as water absorbent polymer, manifests as polyacrylate based polymers that is characterized with the capacity of absorbing upto 800 times of DM water of its own weight. The ability of the Super Absorbent Polymer to absorb water is directed by the ionic concentration of the aqueous solution.
Get PriceViscosifier Anionic polyacrylamide APAM PHPA drilling fluid Viscosifier Anionic polyacrylamide,APAM,PHPA,drilling fluid . Main Production: Oilfield Chemicals, Oilfield chemical is a general germ,The oilfield chemicals we can supply include anionic polyacrylamide used for oil drilling mud additives,drag reduction agent and EOR(enhanced oil ...
Get Price2015-3-22 · Polymerization. techniques Process conditions: Homogeneous polymerization: a) Bulk b) Solution 2. Heterogeneous polymerization a) Suspension b) Emulsion 1.. Concerning: Molecular Weight Rate (kinetics) Heat effects (thermodynamics) Bulk polymerization The. bulk addition polymerization is the simplest of all polymerization processes Bulk polymerization is the conversion of monomer into a ...
Get Price2017-11-2 · The use of nanocelluloses as strength-enhancing additives in papermaking is widely known since both cellulose nanofibers (CNF) and nanocrystals (CNC) present similar composition than paper but their exceptional properties in the nanometer scale confers a paper quality enhancement. However, some agglomeration problems in CNF and CNC through hydrogen bonding cause a lower improvement of ...
Get PriceProcess intensification is a key challenge for the future industrial competitiveness of the chemical and related process industries in Europe, especially important in view of short product life times, high diversification and shortage of resources. ... The novel ProMoT tool assists the user in the decision-making process by helping him to find ...
Get PriceThe apparent orders of the rates of polymerization with respect to the initiator and monomer concentrations were estimated to be 0.64 and 1.7, respectively. The rate and degree of polymerization were quite high compared with other allyl monomers. The …
Get PricePotash is the main source of Potassium which is one of the three basic plant nutrients along with nitrogen and phosphorus. Between 60 to 80% of the potash ore is processed by flotation, the other two important unit operations are hot or cold crystallization and electrostatic separation. Almost all the published literature on potash flotation refers to the insoluble minerals as 'collector ...
Get PriceHigh-strength hydrogels bearing nanofibrous architecture have been fabricated through the freezing–thawing process. [ 16 , 149 ] Recently, small-angle light scattering measurements and confocal laser scanning microscopy observations were employed to evaluate the microstructure of chitosan hydrogels during the neutralization of chitosan ...
Get Price1. 1-11. (canceled) 12. A method of producing a phthalocyanine pigment nano-sized particle dispersion, comprising: mixing a phthalocyanine compound solution of a phthalocyanine compound dissolved in an acid or a good solvent containing an acid, with an organic solvent that is a poor solvent with respect to the phthalocyanine compound, to prepare a mixed liquid in which a phthalocyanine ...
Get PricePoly Anionic Cellulose (PAC) Suhal Cellulose LLP. POLY ANIONIC CELLULOSE (PAC) Description. PAC (Polyanionic Cellulose) is a kind of nonionic cellulose ether with the properties of high purity, high DS, particularly high viscosity or low viscosity. These products are semi-natural polymer additive, thickening agent, filtrate reducer.
Get Price45. The method according to claim 1, wherein the first anionic polymer and the second anionic polymer are both high molecular weight anionic polymers. 46. The method according to claim 1, wherein the first anionic polymer and the second anionic polymer each have an average molecular weight of at least about 1,000,000 Daltons. 47.
Get Price2021-3-12 · Microflow technology, i.e., the use of microfluidic devices for continuous flow synthesis, represents a highly useful and increasingly popular method in organic chemistry. Recently, also an increasing number of polymer synthesis protocols attain benefit from this technique. In particular, the control of highly exothermic, fast polymerization reactions can be improved due to the excellent heat ...
Get Price2021-1-4 · The solvothermal method for the synthesis of MFNs has the advantages of uniform size, high purity, good dispersion, good and well-controlled crystal shape, and high crystallinity (Iordache et al. 2018). Also, sonication can be applied to improve the property of synthesized MFNs (Einollahi Peer et …
Get Price2020-3-13 · Nanomedicine is a rapidly emerging field with several breakthroughs in the therapeutic drug delivery application. The unique properties of the nanoscale delivery systems offer huge advantages to their payload such as solubilization, increased bioavailability, and improved pharmacokinetics with an overall goal of enhanced therapeutic index. Nanomedicine has the potential for integrating and ...
Get PriceHigh impact, highly transparent linear styrene-diene block copolymers with five or more blocks and their preparations by anionic dispersion polymerization: 1989-10-03: Gunesin et al. 4870144: Process for producing an isobutylene polymer having functional terminal end …
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