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187results about How to "Prevent gel" patented technology
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Regioselectively substituted cellulose esters produced in a carboxylated ionic liquid process and products produced therefrom
ActiveUS20100029927A1Increase ratingsPrevent gelOrganic chemistryOptical elementsCelluloseLiquid crystalline
This invention relates to novel compositions comprising regioselectively substituted cellulose esters. One aspect of the invention relates to processes for preparing regioselectively substituted cellulose esters from cellulose dissolved in ionic liquids. Another aspect of the invention relates to the utility of regioselectively substituted cellulose esters in applications such as protective and compensation films for liquid crystalline displays.
Owner:EASTMAN CHEM CO
Cellulose esters and their production in carboxylated ionic liquids
InactiveUS8148518B2Increase ratingsPrevent gelSugar derivativesSugar derivatives preparationCelluloseIonic liquid
Owner:EASTMAN CHEM CO
Reformation of ionic liquids
InactiveUS20080194807A1Increase ratingsPrevent gelLiquid separation auxillary apparatusSemi-permeable membranesCelluloseIon exchange
Processes for recycling an ionic liquid comprising employing an initial ionic liquid as a solvent and / or reagent resulting in a modified ionic liquid and thereafter subjecting at least a portion of the modified ionic liquid to at least one anion exchange process to produce a reformed ionic liquid. The initial ionic liquid can be employed in a cellulose esterification process, thereby producing the modified ionic liquid. At least a portion of the reformed ionic liquid can be recycled to a point upstream in the cellulose esterification process.
Owner:EASTMAN CHEM CO
Cellulose esters and their production in carboxylated ionic liquids
InactiveUS20080194808A1Increase ratingsPrevent gelSugar derivativesSugar derivatives preparationIonCellulose
Ionic liquids and cellulose ester compositions and processes and apparatus for producing ionic liquids and cellulose esters. Cellulose esters can be produced by dissolving cellulose in carboxylated ionic liquids and thereafter contacting the cellulose solution with at least one acylating reagent. Cellulose esters produced via the present invention can comprise ester groups that originate from the carboxylated ionic liquid and / or the acylating reagent.
Owner:EASTMAN CHEM CO
Production of ionic liquids
InactiveUS20080194834A1Increase ratingsPrevent gelOrganic chemistryBulk chemical productionSulfurIon exchange
Ionic liquids and processes and apparatus for their production. The ionic liquids can be low sulfur and low halide carboxylated ionic liquids. The ionic liquids can be produced via formation of at least one intermediate carboxylated ionic liquid, and thereafter subjecting the intermediate carboxylated ionic liquid to at least one anion exchange process.
Owner:EASTMAN CHEM CO
Food Product Having a Casing
ActiveUS20090317522A1Less prone to weakening over timeTimely controlMilk preparationAlcoholic beverage preparationCo extrusionFood products
The present invention is directed to a process for preparing a food product having a casing, the process comprising the step of applying a casing paste comprising alginate and a sparingly soluble calcium salt by co-extrusion to the exterior of a material to be cased to form a co-extruded product, and contacting the co-extruded product with a solution comprising calcium ions, thereby causing the alginate to gel.
Owner:DUPONT NUTRITION USA INC
Preparation method of cubic ultra-fine calcium carbonate particles
ActiveCN103663527AParticle size controllableNarrow rangeCalcium/strontium/barium carbonatesNanotechnologySodium bicarbonateSucrose
The invention provides a preparation method of cubic ultra-fine calcium carbonate particles. The method comprises the following steps: (1) adding a nucleation promoter to calcium hydroxide suspension liquid, wherein the nucleation promoter is selected from more than one of glucose, sucrose or sodium citrate; (2) carbonizing by introducing carbon dioxide until the pH value is 8-12, adding a crystal modifier and ageing for 0.5-10 hours, wherein the crystal modifier is selected from one of sodium chloride, sodium carbonate, sodium bicarbonate or sodium hydroxide; (3) further introducing carbon dioxide and carbonizing until the pH value is 6.5-7.0; (4) coating by adding a coating agent, filtering and drying to obtain a product, wherein the coating agent is selected from a resin acid, a resin acid alkali metal salt, a fatty acid or a fatty acid alkali metal salt. According to the calcium carbonate particles, the particle sizes are 90-180nm, the calcium carbonate particles are in a cubic shape, and the specific surface area is 10-18m<2> / g. Thus, the cubic ultra-fine calcium carbonate particles can be used as functional fillers in coating, rubber, plastic and sealant industries.
Owner:建德华明科技有限公司
Production of ionic liquids
InactiveUS7919631B2Increase ratingsPrevent gelOrganic chemistryBulk chemical productionSulfurIon exchange
Owner:EASTMAN CHEM CO
Preparation method of instant oat flour
InactiveCN104642910AModerate tastePreserve soluble nutrientsFood preparationCelluloseAdditive ingredient
The invention discloses a preparation method of instant oat flour and relates to a preparation method of oat flour. The preparation method comprises the following steps: baking, cleaning, soaking, steaming and cooling oats, serving as raw materials, sequentially; glue milling the oats after pretreatment to prepare oat pulp, carrying out enzymatic hydrolysis, heating, boiling, and killing enzyme; and cooling an enzymolysis liquid, glue milling, homogenizing, drying, sterilizing and packaging a finished product. According to the preparation method disclosed by the invention, with the oats as the raw materials, by virtue of pretreatment, enzymatic hydrolysis technological treatment and spray drying, the instant oat flour which can keep multiple nutritional components and fragrance of oat is prepared; the prepared instant oat flour is moderate in taste, has self flavor of oat, keeps the soluble nutritional components in the oats, is also capable of providing extra plant proteins, fats and soluble dietary fibers and can be directly used for preparing an oat beverage; as macromolecular substances including starch, cellulose and proteins in the oats are hydrolyzed by virtue of an enzyme method, the viscosity of the starch of the oats is lowered, and the problems of water separating, gelation, precipitation and the like caused when the oats are applied to beverages are solved.
Owner:厦门北大泰普食品科技有限公司
Gel electrolyte capable of prolonging service life of lead-acid battery
InactiveCN104091968APrevent gelAvoid reunionLead-acid accumulatorsElectrolyte immobilisation/gelificationElectrochemical responseElectrolytic agent
Owner:ZHEJIANG TIANNENG BATTERY JIANGSU NEW ENERGY
Method and apparatus for forming fused silica by combustion of liquid reactants
InactiveUS6565823B1High concentricityPrevents burner buildupSilicaSpray nozzlesCombustorDecomposition
The present invention is directed to a method for making fused silica glass. A liquid, preferably halide-free, silicon-containing compound capable of being converted by thermal oxidative decomposition to SiO2 is provided and introduced directly into the flame of a combustion burner, thereby forming finely divided amorphous soot. The amorphous soot is deposited on a receptor surface where, either substantially simultaneously with or subsequently to its deposition, the soot is consolidated into a body of fused silica glass. The invention further relates to an apparatus for forming fused silica from liquid, preferably halide-free, silicon-containing reactants which includes: a combustion burner which, in operation, generates a flame; an injector for supplying a liquid silicon-containing compound to the flame to convert the compound by thermal oxidative decomposition to a finely divided amorphous soot; and a receptor surface on which the soot is deposited.
Owner:CORNING INC
Method of recycling abrasive slurry
InactiveUS20090053981A1Reduce usageReduce manufacturing costLapping machinesGrinding/polishing apparatusColloidal silicaForeign matter
A method of recycling an abrasive slurry for recycling a slurry that: contains colloidal silica; and has been used in polishing semiconductor wafer(s) is provided. The method includes: adding a dispersant to the used slurry having been collected so as to prevent the used slurry from being gelled; irradiating ultrasound to the used slurry having been added with the dispersant so as to disperse a gelled portion and aggregated silica in the used slurry; and, by using a filter, removing a foreign substance contained in the used slurry having been irradiated with the ultrasound.
Owner:SUMCO TECHXIV
Use of recombinant or synthetic gelatin-like proteins as stabiliser in lyophilized pharmaceutical compositions
InactiveUS20070031501A1Prevent gelReduce the amount of solutionPowder deliveryConnective tissue peptidesVitrificationGelatin
The invention relates to the use of gelatin-like proteins, or polypeptides, with an increased calculated glass transition temperature as stabilisers in lyophilized biological or pharmaceutical compositions.
Owner:FUJIFILM MFG EURO
Preparation method for superhydrophobic coating with condensation microdroplet self-bouncing properties
ActiveCN106634067APrevent gelAvoid reunionAntifouling/underwater paintsPaints with biocidesSilanesSuperhydrophobic coating
The invention relates to a preparation method for a superhydrophobic coating with condensation microdroplet self-bouncing properties. The preparation method comprises the following steps: with a waterborne chain type silica sol as a raw material, carrying out dilution and dispersion with an alkaline aqueous solution so as to effectively prevent the waterborne silica sol from agglomeration, then carrying out dispersing in a volatile organic solution, adding tetraethyl orthosilicate, fluoroalkyl silane and the like into the obtained dispersion liquid, then subjecting silica sol particles to surface modification, and carrying out continuous mechanical stirring so as to obtain the superhydrophobic coating. The coating can be applied to a variety of soft and hard substrates through manners of spraying, dipping, pulling, rolling or brushing, thereby obtaining the superhydrophobic surface with a porous nanometer structure, wherein the porous nanometer structure also enables condensation microdroplets to obtain self-bouncing properties. The coating has extensive application in the aspects of surface self-cleaning and corrosion and mildew prevention, especially in the aspects of condensation heat transfer, water collection, frost prevention, ice resisting, etc. The preparation method provided by the invention has the characteristics of simple preparation process and equipment, easiness in operation, low cost, etc., and is applicable to large-scale preparation and industrial production.
Owner:SOUTHEAST UNIV
System and method for fueling diesel engines with vegetable oil
ActiveUS7650878B2Efficient heatingSafe and reliable mannerInternal combustion piston enginesEngine controllersVegetable oilTemperature dependent viscosity
Owner:KLEINBERGER OREN L
Drill-In Fluids For Oil and Gas Reservoirs With High Carbonate Contents
InactiveUS20100071957A1Reduced responseHigh viscosityLiquid/gas jet drillingFlushingWell drillingViscosity
Compositions Including Relatively Low Reactivity Acids, Mixed with viscoelastic surfactants (VESs) and internal breakers may serve as drill-in fluids to open underground hydrocarbon reservoirs with carbonate contents of 10 wt % or above. The drill-in fluids have low viscosities in the drilling pipe. After the fluid flows out of the drill bit, the acids react with carbonates in the formation thereby increasing the pH of the drill-in fluids causing the VES to gel the fluid at the bottom of the hole and the downhole annulus between the drilling pipe and the formation rock. The viscosified drill-in fluid will reduce fluid loss and will carry no dissolved drilling debris to the surface. After drilling through the targeted formation, the internal breakers in the viscosified drill-in fluids will break down the fluids to permit their removal, and the well is ready to produce with very little or no near well bore damage.
Owner:BAKER HUGHES INC
Method for producing acrylonitrile, catalyst for use therein and method for preparing the same
InactiveUS6642405B1High yieldIncrease productionOrganic compound preparationPreparation by hydrocarbon ammoxidationFluidized bedPotassium
For the production of acrylonitrile by ammoxidation of propylene, there is provided a process capable of giving a high yield and maintaining such an effect for a long period of time.In producing acrylonitrile by ammoxidation of propylene, a fluidized bed catalyst is used and the reaction is carried out while appropriately adding a molybdenum-containing material, wherein the fluidized bed catalyst contains molybdenum, bismuth, iron, nickel, chromium, potassium, an F component and silica as essential components, and has a number of Mo / Me of from 0.8 to 1, wherein the Mo / Me is a number obtained by dividing the product 20 of a valence number of molybdenum as molybdic acid and an atomic ratio of molybdenum by the sum of respective products of respective valence numbers and atomic ratios of bismuth, iron, nickel, chromium, potassium, the F component element, a G component element and a Y component element.
Owner:MITSUBISHI CHEM CORP
Engine EGR (Exhaust Gas Recirculation) system
InactiveCN103485937ASimple structureAvoid carbon depositsInternal combustion piston enginesNon-fuel substance addition to fuelExhaust fumesExhaust gas recirculation
The invention discloses an engine EGR (Exhaust Gas Recirculation) system, comprising an EGR cooler, an EGR valve, a by-pass line and a temperature sensor, wherein the EGR valve is communicated with the gas outlet end of the EGR cooler; the by-pass line is connected with the EGR cooler in parallel; an exhaust gas flow control proportional valve which is connected with an ECU (Engine Control Unit) in a controlling way is mounted at the inlet of the by-pass line; the temperature sensor is arranged between the outlet of the by-pass line and the EGR valve and is taken as an input end used for collecting the valve inlet exhaust gas temperature of the EGR valve by the ECU. The engine EGR system is simple in structure; the by-pass line which is connected with the EGR cooler in parallel and is provided with the proportional valve is adopted; the temperature of the valve inlet exhaust gas entering the EGR valve is adjusted by adjusting the opening proportion of the proportional valve; the EGR valve inlet exhaust gas temperature is controllable under all operating working conditions of an engine; the EGR system is free of carbon deposition and gum deposit; therefore the temperature of the mixed gas entering an engine cylinder can be well controlled; the optimal states of engine performance and discharge are realized; the cooling efficiency of the EGR cooler is monitored in real time, so that the reliability of a product is ensured.
Owner:GUANGXI YUCHAI MASCH CO LTD
Flame-retardant heat conductive insulation silicone rubber product for power equipment and preparing method of flame-retardant heat conductive insulation silicone rubber product
ActiveCN106046799AReduce intensityLow thermal conductivitySynthetic resin layered productsLaminationSmall animalInsulation layer
The invention discloses a flame-retardant heat conductive insulation silicone rubber product for power equipment. The flame-retardant heat conductive insulation silicone rubber product comprises a bonding layer and a heat conductive insulation layer, wherein the bonding layer is arranged below the heat conductive insulation layer, the thickness of the bonding layer ranges from 0.05 mm to 0.1 mm, the thickness of the heat conductive insulation layer ranges from 0.5 mm to 3.5 mm, and the heat conductive insulation layer comprises a silicon rubber insulation layer. The invention further discloses a preparing method of the silicon rubber product. The obtained silicon rubber product is easy to construct and capable of being tightly attached to power equipment, heat generated in the running process of power equipment can be effectively led out, and human casualty accidents caused by pollution flashover, condensate flashover, small animal short circuiting and naked busbars in transformer substations are also effectively eliminated.
Owner:北京天衣鼎嘉工程技术有限公司
Targeted domain-control grouting device and grouting process
ActiveCN104314587ADiffusion limited transportHigh strengthUnderground chambersSealing/packingSlurryGrout
The invention discloses a targeted domain-control grouting device which comprises a mold-bag grouting pipe, a cement-based slurry grouting pipe and a control-liquid grouting pipe. The mold-bag grouting pipe, the cement-based slurry grouting pipe and the control liquid grouting pipe are fixed and respectively penetrate an orifice fastening and sealing unit. At least one mold bag externally sleeving the mold-bag grouting pipe is arranged on the same, a plurality of grout vents for adhering aluminum sheets are formed in the pipe wall of each mold-bag grouting pipe inside the mold bags, and when number of the mold bags is larger than one, spacing is formed among the mold bags, and spacing sections just correspond to key grouting parts of the grout vents; the cemented-based slurry grouting pipe and the tail end of the control-liquid grouting pipe are communicated to a mixer, a slurry-outlet short pipe is connected on the mixer, the slurry outlet of the slurry-outlet short pipe corresponds to the key grouting parts in the grout vent. The invention further discloses a grouting process utilizing the targeted domain-control grouting device. By the arrangement, targeted domain-control grouting on the key grouting parts is realized, mobility of double-liquid slurry initially grouted to stratum is guaranteed by mixing double liquid in the holes, the slurry can be sufficiently grouted in the key grouting parts, and overall effect of grouting engineering is improved.
Owner:SHANDONG UNIV OF SCI & TECH
Method for the production of cross-linkable acrylate contact adhesive materials
InactiveUS7084185B2Rapid responseImprove responseFilm/foil adhesivesOptical articlesPolymer scienceAdhesive materials
Process for preparing crosslinked pressure ensitive adhesives, in which a plyacrylate is prepared by the free radical copolymericzation of a monomer mixture , the polyacrylate is then concentrated and the concentrated polyacrylate is reacted with further monomers having functional groups and subsequently crosslinking.
Owner:TESA SE
Method for controlling planeness during chemically mechanical polishing for ULSI multiple-layered copper wiring
InactiveCN1861321ASolve the problem of selectivitySolve many disadvantages such as copper wire collapse after polishingPolishing machinesAqueous dispersionsCopper-wiringMultiple layer
A method for controlling the level degree on the ULSI multi-layer wiring in chamico-mechanical polishing includes such steps as diluting SiO2 hydrosol by deionized water, adding metal ion chelating agent to regulate pH=10-13, adding alcohol-ether kind of surfactant and oxidant while stirring to obtain polishing liquid, and polishing at 20-40 deg.C and 60-120 rpm under 100-250 g / sq.cm.
Owner:天津河北工业大学资产经营有限责任公司
System and method for fueling diesel engines with vegetable oil
ActiveUS20070056569A1Efficient heatingSafe and reliable mannerInternal combustion piston enginesEngine controllersTemperature dependent viscosityFuel tank
A heated fuel delivery system for vegetable oil or other fuels of temperature dependent viscosity, which may be used as fuel for a diesel engine. The system includes one or more heated fuel lines and / or a heated fuel tank to heat the fuel and reduce its viscosity for more efficient use. Recovered engine heat from the engine coolant system is transferred to heat the fuel.
Owner:KLEINBERGER OREN L
Preparation method of cefotaxime sodium crystal
ActiveCN103275101APrevent gelGranular concentrationOrganic chemistrySodium acetateSodium acetrizoate
The invention relates to a preparation method of a cefotaxime sodium crystal. The preparation method comprises the following steps of: dissolving sodium acetate in a mixed solvent of organic solvent and water below 10-40 DEG C, wherein the volume fraction of organic solvent in the mixed solvent is 30-70%; adding cefotaxime acid, and stirring until the cefotaxime acid reacts in the solution; adding a cefotaxime sodium crystal in the solution, then adding elution agents with a feeding time of 2-8 hours, cooling to 5 DEG C below zero to 5 DEG C; and filtering, washing and drying a crystal slurry to obtain the cefotaxime sodium crystal. By the preparation method, the phenomenon of gelatinization frequently seen in the crystallization process of the cefotaxime sodium crystal is avoided, the size distribution of the products is centralized and the major particle size is adjustable from 5mu m to 60my m, the liquidity of the product is good, the process yield is higher than 87%, and the product purity is higher than 95.5%.
Owner:TIANJIN UNIV
Colloid electrolyte capable of improving service life of lead-acid cell
InactiveCN104218261APrevent gelAvoid reunionLead-acid accumulatorsElectrolyte immobilisation/gelificationElectrochemical responseElectrolytic agent
The invention discloses a colloid electrolyte can improve the service life of a lead-acid cell, and the colloid electrolyte comprises the following raw materials by weight: 0.1-0.5% of polyethylene glycol, 0.1-1% of stannous sulfate, 0.5-1.5% of sodium sulfate, 0.5-1% of phosphoric acid, 0.05-2% of organosilicon polymer, 0.5-8% of fumed silica, 35-45% of sulfuric acid, and balanced of deionized water. The polyethylene glycol as a colloid stabilizer can prevent the occurrence of colloid coacervation or agglomeration before colloid is poured into the cell, colloidal stability is enhanced, and a stable three-dimensional network structure is formed; the stannous sulfate can be oxidized to tetravalent tin, the active material electrical conductivity and recharge ability after the cell is discharged can be improved, the sodium sulfate in the electrolyte can provides a certain amount of sulfate radicals for the electrochemical reaction, the degree of supersaturation of lead sulfate crystals can be reduced, formation of a lead sulfate layer with poor electrical conductivity can be prevented; the phosphoric acid can refine the grain diameter of the lead sulfate crystals; and silicon oxygen bonds and hydrogen bonds in the organosilicon polymer can effectively reduce the active material softening speed, inhibit the surface active material passivation, and improve the service life of the cell.
Owner:ZHEJIANG TIANNENG BATTERY JIANGSU NEW ENERGY
Modified urethane acrylate copolymer, photoresist and preparation method of photoresist
The invention discloses a modified urethane acrylate copolymer. The modified urethane acrylate copolymer is prepared from 16.1 to 50.9 parts by mass of polyisocyanate, 15.4 to 40.2 parts by weight of polyether polyol, 0. 01 to 0.09 parts by weight of a catalyst, 3.1 to 11.6 parts by weight of carboxylated diol, 5.3 to 20.8 parts by weight of epoxy resin, 0.1 to 0.5 parts by weight of a polymerization inhibitor, 10.7 to 35.5 parts by weight of hydroxyl group-containing acrylate, and 10 to 80 parts by weight of a solvent. The polyisocyanate is a mixture of one or more of hexamethylene diisocyanate, tolylene diisocyanate, 1, 6-hexamethylene diisocyanate, isophorone diisocyanate, diphenylmethane diisocyanate, xylylene diisocyanate, and polymethylene polyphenyl polyisocyanate. The modified urethane acrylate copolymer has the advantages of simple operation and short production period. The modified urethane acrylate copolymer has the advantages of adjustable acid value, good heat resistance, strong corrosion resistance, good adhesion to the substrate and stable performance. The prepared photoresist has good comprehensive performances and is easy to promote and use.
Owner:SHENZHEN DALTON ELECTRONICS MATERIAL CO LTD
Rapidly disintegrating sustained release cefuroxime axetil composition
InactiveUS6932981B2Increased blood levelsGood curative effectPharmaceutical non-active ingredientsMicrocapsulesMethacrylateControlled release
A fast disintegrating controlled release oral composition comprising a core material containing cefuroxime axetil present as controlled release form, the cefuroxime axetil being provided with an outer coating of a copolymer selected from aqueous dispersions of enteric methacrylic acid and methacrylic acid esters anionic copolymers having carboxyl group as the functional group or mixtures thereof and an inner coating of a sustained-release copolymer selected from aqueous dispersions of acrylate and methacrylate pH independent copolymers having quaternary ammonium group as a functional group or mixtures thereof, and optionally probenecid. Additionally, the coating composition may contain plasticizers. The composition is suitable for once daily administration.
Owner:LUPIN LABORATORIES LTD
Water-based fluorosilicone acrylic resin and preparation method thereof
InactiveCN106674442AImprove heat resistanceGood weather resistanceFireproof paintsAntifouling/underwater paintsWater basedPolymer science
The invention relates to water-based fluorosilicone acrylic resin, which has a general molecular formula shown as the accompanying drawing, wherein x and y are respectively any one integer from 1 to 200; R1 is H or CH3; R2 is COOH, COO(CH2)3CH3, COOCH3, COO(CH2)2OH, COOCH2CF3, COOCH2CF2CHFCF3 or COOCH2CF(CF3)CHFCF(CF3)2; R3 is a silicon-containing chain section. The invention also discloses a preparation method of the water-based fluorosilicone acrylic resin. By a fine emulsion polymerization method, a fluorine-containing chain section and a silicon-containing chain section are simultaneously introduced into the resin, so that the performance of the water-based fluorosilicone acrylic resin is better; the preparation cost is lower.
Owner:QUANGANG PETROCHEM RES INST OF FUJIAN NORMAL UNIV
Preparation method of POE (polyolefin elastomer) chemically-grafted maleic anhydride
InactiveCN103450403APrevents gelation and yellowingReduces odor and yellowingSolventMaleic anhydride
The invention discloses a preparation method of POE (polyolefin elastomer) chemically-grafted maleic anhydride. The preparation method of the POE chemically-grafted maleic anhydride comprises the following steps: S1. compounding POE, maleic anhydride, peroxide initiators as well as heat stabilizers, adding an acetone solvent, and mixing evenly; S2, evenly stirring the materials in a high-speed stirrer so as to enable each component to be dispersed evenly and enable the solvent to be volatilized sufficiently, feeding the materials, setting the extrusion temperature of a single-screw extruder as 80-250 DEG C and the main engine frequency of the single-screw extruder as 25-50Hz, controlling the vacuum pressure of the single-screw extruder to be 0.06-0.1MPa, carrying out chemical grafting reaction for 2-4 minutes, staying, cooling, dicing grains, stirring and packaging. The preparation method of the POE chemically-grafted maleic anhydride, which is provided by the invention, can be used for solving defects in production of the POE chemically-grafted maleic anhydride and problems of a POE chemically-grafted maleic anhydride product in the prior art, and greatly improving the compatibility of POE and polar polymers.
Owner:NINGBO EAGLE NEW MATERIAL
Regioselectively substituted cellulose esters produced in a carboxylated ionic liquid process and products produced therefrom
InactiveUS20120101269A1Increase ratingsPrevent gelOrganic chemistryOptical elementsCelluloseLiquid crystalline
This invention relates to novel compositions comprising regioselectively substituted cellulose esters. One aspect of the invention relates to processes for preparing regioselectively substituted cellulose esters from cellulose dissolved in ionic liquids. Another aspect of the invention relates to the utility of regioselectively substituted cellulose esters in applications such as protective and compensation films for liquid crystalline displays.
Owner:EASTMAN CHEM CO
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