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Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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| Number | Title | Issue Date |
| 7339088 | Alkylbenzene refining process and apparatus Improved processes and apparatus use a finishing column with a mid-cut that provides alkylbenzene products of high purity containing less than about 1 ppmw benzene and less than about 50 ppmw heavies while accommodating enhancements in the efficiencies and the capac... | 03/04/2008 |
| 7311813 | Distillation sequence for the purification and recovery of hydrocarbons This invention is an improved distillation sequence for the separation and purification of ethylene from a cracked gas. A hydrocarbon feed enters a C2 distributor column. The top of the C2 distributor column is thermally coupled to an ethylene distributor column, an... | 12/25/2007 |
| 7291565 | Method and system for treating a substrate with a high pressure fluid using fluorosilicic acid A method and system is described for treating a substrate with a high pressure fluid, such as carbon dioxide in a supercritical state. A process chemistry is introduced to the high pressure fluid for treating the substrate surface. The process chemistry comprises fl... | 11/06/2007 |
| 7270941 | Method of passivating of low dielectric materials in wafer processing A method of passivating silicon-oxide based low-k materials using a supercritical carbon dioxide passivating solution comprising a silylating agent is disclosed. The silylating agent is preferably an organosilicon compound comprising organo-groups with five carbon a... | 09/18/2007 |
| 7183448 | Azeotropic composition, comprising 1, 1, 1, 3,3-pentafluoropropane and 1, 1, 1-trifluoro-3-chloro-2-propene, method of separation and purification of the same, and process for producing 1, 1, 1,3,3-pentafloropropane and 1, 1, 1-trifluoro-3-chloro-2-propene A mixture comprising at least 1,1,1,3,3-pentafluoropropane and 1,1,1-trifluoro-3-chloro-2-propene is subjected to a distillation operation, and thereby, a distillate comprising an azeotropic composition consisting substantially of 1,1,1,3,3-pentafluoropropane and 1,... | 02/27/2007 |
| 7044662 | Developing photoresist with supercritical fluid and developer An apparatus for developing a polymeric film without the need for a water rinse step is disclosed. An object having a surface supporting a polymeric film is placed onto a support region within a pressure chamber of the apparatus. A fluid and developer is introduced ... | 05/16/2006 |
| 7045639 | Method for purifying N-(2-hydroxyethyl)-2-pyrrolidone A method for purifying N-(2-hydroxyethyl)-2-pyrrolidone (HEP) is disclosed. The method comprises crystallizing crude HEP to produce HEP crystals and a mother liquor, and separating the HEP crystals from the mother liquor. In one method of the invention, crystallizat... | 05/16/2006 |
| 7005544 | Method for preventing polymerization in an acrylic acid manufacturing process A method for effectively preventing polymerization of acrylic acid during an azeotropic dehydration distillation in an acrylic acid manufacturing process and thus enabling stable operation of the azeotropic dehydration column over an extended period of time. The acr... | 02/28/2006 |
| 6979754 | Method for obtaining polymerizable vinyl chloride from a raw product derived from the pyrolysis of 1,2-dichloroethane The invention concerns a method for obtaining directly polymerisable vinyl chloride which consists in subjecting a cooled raw product derived from of pyrolysis of 1,2-dichloroethane, to another cooling process at a temperature not more than 40° C., under pressure r... | 12/27/2005 |
| 6936724 | Process for producing epsilon-caprolactone A process produces ε-caprolactone by the oxidation of cyclohexanone by feeding a crude reaction mixture to a first distillation column; distilling off a first distillate containing low boiling components including unreacted cyclohexanone from the top of the first d... | 08/30/2005 |
| 6838104 | Process for the production of tocotrienols This invention relates to processes for the production of tocotrienol compounds from biological sources such as palm oil, cereals, grains, and grain oils. The tocotrienol products are recovered in high yields. These tocotrienols are useful as pharmaceuticals, in foo... | 01/04/2005 |
| 6524496 | Azeotrope-like composition of 1,1,1,3,3-pentafluoropropane and 1-chloro-1,1,3,3,3-pentafluoropropane Provided are azeotropic and azeotrope-like mixtures of 1,1,1,3,3-pentafluoropropane (HFC-245fa) and 1-chloro-1,1,3,3,3-pentafluoropropane (HCFC-235fa) that are useful as intermediates in the production of HFC-245fa. A process for separating HFC-245fa... | 02/25/2003 |
| 6508917 | Method and apparatus for purifying low grade acetonitrile and other constituents from hazardous waste A method and apparatus for purifying acetonitrile from low grade acetonitriles. Low grade acetonitrile from DNA synthesis, HPLC and pharmaceutical drug manufacturing process wastes which comprise acetonitrile, a first set of impurities having a lower boil... | 01/21/2003 |
| 6462210 | Fractionation process for the unsaponifiable material derived from black-liquor soaps The present invention relates to a fractionation process of the unsaponifiable material derived from black-liquor soaps of the cellulose industry. Through this procedure fractions that essentially contain free sterols, fatty alcohols, sterol esters and fa... | 10/08/2002 |
| 6395142 | Method and apparatus for purifying low grade acetonitrile and other constituents from hazardous waste A method and apparatus for purifying acetonitrile from low grade acetonitriles. Low grade acetonitrile from DNA synthesis, HPLC and pharmaceutical drug manufacturing process wastes which comprise acetonitrile, a first set of impurities having a lower boil... | 05/28/2002 |
| 6120653 | Separation and purification method of t-butyl-methylphenol isomer A method is provided for industrially advantageously and effectively separating 4M2B and 3M6B from a t-butylcresol mixture containing 2-t-butyl-4-methylphenol (4M2B), 2-tbutyl-5-methylphenol (3M6B), compounds having a lower boiling point than that of 4M2B... | 09/19/2000 |
| 5865958 | Method for separating cyclohexene Cyclohexene is separated from a mixture of cyclohexene and at least one of cyclohexane and benzene by subjecting the mixture to extractive distillation in the presence of an extraction solvent the formula: ##STR1## wherein R1 and R2 | 02/02/1999 |
| 5695615 | Purification process for cyclic formulas A purification process for cyclic formals, in which water is efficiently removed from a crude cyclic formal, namely, a mixture of a cyclic formal and water which is difficult to be separated from the mixture, thereby obtaining a cyclic formal of high puri... | 12/09/1997 |
| 5685957 | Method for removing acidic and salt impurities from an aqueous condensed phase containing dimethylcarbonate Acidic and salt impurities are removed from a condensed phase obtained from dimethyl carbonate synthesis by obtaining the condensed phase from the effluent of a reactor in which carbon monoxide, oxygen and methanol are reacted to form dimethyl carbonate, ... | 11/11/1997 |
| 5675054 | Low cost thermal coupling in ethylene recovery The invention is a process for reducing capital and energy costs in ethylene recovery. Moderate pressure processing and thermally coupled fractionation steps are achieved through the use of integrator columns. Ethylene separation from cracked gas originat... | 10/07/1997 |
| 5662780 | Process for purifying acetic acid A process for purifying acetic acid which comprises: introducing a feedstock aqueous solution of acetic acid having an acetic acid concentration of from 10 to 50% by weight into an extractor; supplying an extracting medium containing isopropyl acetate in ... | 09/02/1997 |
| 5472576 | Process for the recovery of industrial solvents and diluents from industrial waste A method for the production of an industrial diluent which includes the steps of heating a liquid waste from a facility that manufactures coatings, inks, lacquers, adhesives, or dyes in a mixer-reactor to generate a vapor, flowing the vapor into a distill... | 12/05/1995 |
| 5356520 | Separation of high boiling point solvents from amyl acetate A process for the separation of amyl acetate, a high boiling point solvent from various high boiling point corrosive impurities, namely, bromoethyl acetate, in an industrial setting to allow for reuse through continuous recycling thereof.... | 10/18/1994 |
| 5354431 | Plural stage drying and purification of propylene oxide Crude propylene oxide is purified by a distillation process wherein it is (a) extractively distilled in a first column using a C2 to C6 alkylene glycol extractive distillation agent to form a first overhead fraction comprising propyl... | 10/11/1994 |
| 5217904 | Apparatus and method for evaporative concentration of a liquid sample An apparatus for evaporative concentration of a liquid sample comprises a housing including an upper chamber and a lower chamber, a concentrator flask, a reflex tube and a vortex tube. The concentrator flask includes an upper solution vessel section and a... | 06/08/1993 |
| 5215629 | Method of separating aromatics from a hydrocarbon mixture having an aromatic content A process for separating an aromatic from a mixture containing also nonaroma includes distilling off the nonaromatics from the top of the extractive distillation column as a top product, drawing the aromatic and selective solvent from the extractive disti... | 06/01/1993 |
| 5167775 | Method for recovery of solvent used in production of polyarylene sulfide The present invention provides a method for the recover of a solvent used in the production of a polyarylene sulfide according to which the deterioration of the solvent is low and the recovery rate is high, wherein a mixed liquid, mainly composed of the s... | 12/01/1992 |
| 5160414 | Extractive distillation of alcohol/ether/hydrocarbon mixtures An extractive distillation process for separation ethers (in particular methyl t-butyl ether or ethyl t-butyl ether), aliphatic hydrocarbons (in particular isobutane and/or isobutene) and alcohols (in particular methanol or ethanol) employs as solvent sul... | 11/03/1992 |
| 5144068 | Methanol carbonylation process An alcohol such as methanol is reacted with carbon monoxide in a liquid reaction medium containing a rhodium catalyst stabilized with an iodide salt, especially lithium iodide, along with alkyl iodide such as methyl iodide and alkyl acetate such as methyl... | 09/01/1992 |
| 5130157 | Process for concentrating lactones The present invention relates to a process for obtaining an aroma concentrate that is enriched in lactones. The present invention is particularly concerned with a process for concentrating lactones from a distillate obtained by the distillative deacidific... | 07/14/1992 |
| 5127997 | Purification of propylene oxide by liquid extraction Purified propylene oxide is recovered from an impure propylene oxide feedstock contaminated with more than 50 ppm of six carbon atom hydrocarbon impurities by a solvent extraction process wherein: an impure propylene oxide feedstock is charged to a liquid/liqu... | 07/07/1992 |
| 5106458 | Method for the purification of propylene oxide Methyl formate is removed from impure propylene oxide by contacting the impure propylene oxide in a treating zone with a basic ion exchange resin for a period of time sufficient to convert the methyl formate to formic acid and methanol, and by withdrawing... | 04/21/1992 |
| 5091057 | Stripping process for water removal from alcohol A process for obtaining a substantially dry alcohol from a mixture comprising alcohol and water in a non-azeotropic amount by utilizing at least a portion of the alcohol in the mixture as the stripping medium.... | 02/25/1992 |
| 5076896 | Process for the separation of propylene glycol from fatty alcohols A process for the separation of propylene glycol from a mixture of low-boiling fatty alcohols and propylene glycol which comprises extracting the mixture with water to produce a water-propylene glycol mixture and fractionating the water-propylene glycol m... | 12/31/1991 |
| 5073351 | Production of middle distillate range hydrocarbons by light olefin upgrading An oligomerization system is provided for upgrading lower olefins to distillate hydrocarbons, especially useful as high quality jet or diesel fuels. The olefinic feedstock is reacted over a shape selective acid zeolite, such as ZSM-5, to oligomerize feeds... | 12/17/1991 |
| 5066365 | Process for the isolation of vinyl acetate by distillation The invention relates to a process for the isolation of vinyl acetate which involves not combining the bottom product of the recylced gas washings with the water-saturated vinyl acetate but rather introducing it to further multiple distillation columns fr... | 11/19/1991 |
| 5057192 | Acetone removal from acetic anhydride production process Disclosed is an improved process for the removal of acetone from a production system wherein acetic anhydride is produced by contacting a mixture containing methyl iodide and methyl acetate and/or dimethyl ether with carbon monoxide in the presence of a c... | 10/15/1991 |
| 5028735 | Purification and preparation processes for methyl methacrylate A purification process for methyl methacrylate (MMA) and a recovery process for methanol are disclosed. A mixture, which contains water, methanol and methyl methacrylate (MMA) as principal components along with at least one of methyl acrylate, methyl prop... | 07/02/1991 |
| 5026908 | Methanol carbonylation process An alcohol such as methanol is reacted with carbon monoxide in a liquid reaction medium containing a rhodium catalyst stabilized with an iodide salt, especially lithium iodide, along with alkyl iodide such as methyl iodide and alkyl acetate such as methyl... | 06/25/1991 |
| 4986885 | Process for the separation of butanol and butoxyacetaldehyde A process for the separation of butanol and butoxyacetaldehyde which involves subjecting a composition which contains these two compounds to a distillation at a pressure of at most 660 mbar. According to a special embodiment the composition to be distille... | 01/22/1991 |
