Bizarre Patents
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 |
| 7371808 | Polymer treating method and apparatus A polymer treating method has the steps of: reacting a polymer compound with a reaction agent in a reaction vessel to generate a polymer treatment product; discharging the polymer treatment product containing the reaction agent from the reaction vessel; depressurizi... | 05/13/2008 |
| 7355071 | Method for preparing 2,6-naphthalene dicarboxylic acid Disclosed is an improved method for preparing 2,6-naphthalene dicarboxylic acid from di-lower alkyl 2,6-naphthalene dicarboxylate, which is characterized in that hydrolyzing di-lower alkyl 2,6-naphthalene dicarboxylate in a specified amount of water in the presence ... | 04/08/2008 |
| 7186794 | Polymer treating method and apparatus A polymer treating method has the steps of: reacting a polymer compound with a reaction agent in a reaction vessel to generate a polymer treatment product; discharging the polymer treatment product containing the reaction agent from the reaction vessel; depressurizi... | 03/06/2007 |
| 7173150 | Process for recovering terephthalic acid from pulverized product of spent polyethylene terephthalate and system for use in such process This invention provides a process a process for recovering terephthalic acid from pulverized products of spent polyethylene terephthalate. This process comprises (1) a decomposition reaction step where the pulverized products of spent polyethylene terephthalate are ... | 02/06/2007 |
| 7078440 | Dimethyl terephthalate composition and process for producing the same A dimethyl terephthalate composition includes 0.001 to 200 ppm of methyl 4-(1,3-dioxolan-2-yl)benzoate and 0 to 1 ppm of dimethyl hydroxyterephthalate contained in dimethyl terephthalate, and exhibits improved properties as a material for producing polyester. ... | 07/18/2006 |
| 7041199 | Process and device for hydrolytically obtaining a carboxylic acid alcohol from the corresponding carboxylate A process and a device for the catalytic hydrolysis of a carboxylate, e.g., methyl acetate, ethyl acetate, i- or n-propyl acetate, i- or n-butyl acetate, allyl acetate and methyl formate, into the corresponding carboxylic acid and alcohol, by a combination of a pre-... | 05/09/2006 |
| 7030264 | Bis-β-hydroxyethyl terephthalate Bis-β-hydroxyethyl terephthalate having an optical density measured in a 10 wt % methanol solution at a measurement wavelength of 380 nm and a cell optical path length of 10 mm of 0.000 to 0.006. The present invention makes it clear that purified BHET having an opt... | 04/18/2006 |
| 6720448 | Method of recovering chemical species by depolymerization of poly (ethylene terephthalate) and related use The present invention relates to a method of recovering a solution comprising the chemical species obtained by depolymerization of PET from a material containing poly(ethylene terephthalate) in the form of bottles, by making said material react, in the absence of wa... | 04/13/2004 |
| 6670503 | Method for recovery of terephthalic acid from a material containing poly(ethylene terephthalates) The present invention relates to a method of recovering terephthalic acid from a material containing poly(ethylene terephthalate) (P.E.T.) in the form of bottles, by making said material react, in the absence of water, with a reagent consisting of one or ... | 12/30/2003 |
| 6657077 | Method for producing a purified alkaline metal terephthalate, derived from the products of saponification of polyterephthalates The invention concerns a method for producing terephthalate of alkaline metal and alkylene glycol from recuperated alkylene polyterephthalate. It comprises saponification of said alkylene terephthalates with an aqueous sodium solution, adding a sufficient... | 12/02/2003 |
| 6649792 | Method of chemical recycling of polyethylene terephthalate waste The proposed method of chemical recycling of polyethylene terephthalate waste to terephthalic acid and ethandiol is based on a continuous series of gradual steps, namely (a) separation of the polyethylene terephthalate component of the input material by i... | 11/18/2003 |
| 6580005 | Process for recovering terephthalic acid from pulverized product of spent polyethylene terephthalate and system for use in such process This invention provides a process a process for recovering terephthalic acid from pulverized products of spent polyethylene terephthalate. This process comprises (1) a decomposition reaction step where the pulverized products of spent polyethylene terepht... | 06/17/2003 |
| 6562877 | Recovery of dicarboxylic aromatic acids from polyester-resin contained in articles for recycling A method for the recovery of dicarboxylic aromatic acids, in particular terephthalic acid, from manufactured aromatic polyester-resin articles for recycling, wherein the article, fragmented into chip form, is reacted in solution in a carboxylic acid with ... | 05/13/2003 |
| 6521783 | Processes for preparing oxygenates This invention relates in part to a processes for the conversion of a feedstock stream comprising carbon monoxide and hydrogen to a product stream comprising at least one of an ester, acid, acid anhydride and mixtures thereof. This invention also relates ... | 02/18/2003 |
| 6472557 | Process for recycling polyesters A process for producing high quality TPA suitable for PET feedstock material from recycled polyester. The process includes the steps of depolymerizing the polyester to form DMT; separating the DMT from secondary materials; and hydrolyzing the DMT to form ... | 10/29/2002 |
| 6462230 | Method of and apparatus for decomposing wastes A method of decomposing wastes containing target compounds having one or more of hydrolyzable bonds of ether bond, ester bond, amide bond and isocyanate bond wherein the method comprises continuously supplying the wastes in a molten state or liquid state ... | 10/08/2002 |
| 6461700 | Aromatic acid monomers, polymers, products and processes for their manufacture Processes for producing aromatic monomers useful for forming polyesters are disclosed. Cost effective steps employed in the processes permit small amounts of process-related materials typically removed from monomer to remain in an aromatic monomer product... | 10/08/2002 |
| 6452046 | Process for producing 2,3,5,6-tetrachloro-1,4-benzenedicarboxylic acid A process for producing 2,3,5,6-tetrachloro-1, 4-benzenedicarboxylic acid, comprising heating 2,3,5,6-tetrachloro-1,4-benzenedicarboxamide together with sulfuric acid exhibiting an acidity function (--Ho) of 10.27 to 14.44 in the presence of water contain... | 09/17/2002 |
| 6284920 | Aromatic acid monomers, polymers, products and processes for their manufacture Processes for producing aromatic monomers useful for forming polyesters are disclosed. Cost effective steps employed in the processes permit small amounts of process-related materials typically removed from monomer to remain in an aromatic monomer product... | 09/04/2001 |
| 6255529 | Method of and apparatus for decomposing wastes A method of decomposing wastes containing target compounds having one or more of hydrolyzable bonds of ether bond, ester bond, amide bond and isocyanate bond wherein the method comprises continuously supplying the wastes in a molten state or liquid state ... | 07/03/2001 |
| 6255525 | Process for preparing purified carboxylic acids A process for preparing an aromatic carboxylic acid having improved purity comprising contacting at an elevated temperature and pressure a mixture comprising an impure aromatic carboxylic acid and a solvent in the presence of hydrogen gas with a carbon ca... | 07/03/2001 |
| 6248879 | Polyanhydride crosslinked fibrous cellulosic products and process for their preparation A process for preparation of crosslinked cellulosic products containing at least 30 wt. % cellulosic fibers and the polyanhydride crosslinked cellulosic products resulting therefrom wherein a cellulosic material is treated with an aqueous solution of a po... | 06/19/2001 |
| 6239310 | Method of recovery of terephthalic acid and ethylene glycol from poly/ethylene terephthalate/wastes A subject of the invention is the method of recovery of terephthalic acid and ethylene glycol from poly/ethylene terephthalate/wastes. According to the invention poly/ethylene terephthalate/ is heated in an aqueous solution at the temperature from 150° C... | 05/29/2001 |
| 6103930 | Recovery of 2,6-naphthalene dicarboxylic acid from polyesters This invention concerns a method for recycling polyesters comprising the hydrolysis of polyesters containing repeat units derived from 2,6-naphthalene dicarboxylic acid in the presence of a carboxylic acid which gives pure 2,6-naphthalene dicarboxylic aci... | 08/15/2000 |
| 6075163 | Process for manufacturing terephthalic acid This invention relates to a process for manufacturing terephthalic acid and more particularly, to a process for manufacturing terephthalic acid in a high recovery rate with high purity in accordance with the practice of this invention comprising the follo... | 06/13/2000 |
| 6031128 | Process for manufacturing terephthalic acid This invention relates to a process for manufacturing terephthalic acid and more particularly, to a process of manufacturing and recovering the highly purified terephthalic acid using an alkali weight-reduction waste water discharged from weight-reduction... | 02/29/2000 |
| 6013835 | Method and apparatus for preparing purified terephthalic acid A method and apparatus for purifying crude terephthalic acid from a liquid dispersion thereof also containing impurities selected from unreacted starting materials, solvents, products of side reactions and/or other undesired materials is provided. The met... | 01/11/2000 |
| 5981739 | Polyanhydride crosslinked fibrous cellulosic products and process for their preparation A process for preparation of crosslinked cellulosic products containing at least 30 wt. % cellulosic fibers and the polyanhydride crosslinked cellulosic products resulting therefrom wherein a cellulosic material is treated with an aqueous solution of a po... | 11/09/1999 |
| 5849949 | Process for preparing alkyl- and arylmalonic acids Alkyl- and arylmalonic acids of the formula I ##STR1## where R1 =H, C1 -C12 -alkyl, phenyl, C1 -C4 -alkylphenyl, C2 -C4 -dialkylphenyl, R2 =C1 -C12 | 12/15/1998 |
| 5767311 | Method and apparatus for preparing purified terephtalic acid A method and apparatus for purifying crude terephthalic acid from a liquid dispersion thereof also containing impurities selected from unreacted starting materials, solvents, products of side reactions and/or other undesired materials is provided. The met... | 06/16/1998 |
| 5750776 | Production of dicarboxylic acids or esters thereof Dicarboxylic acids or esters thereof are recovered from solid phase polyester materials, such as post-consumer products and factory scrap, by initially subjecting the polyester to a glycolysis reaction (in one or more stages) to produce a liquid phase med... | 05/12/1998 |
| 5728870 | Process for preparing purified 2,6-naphthalenedicarboxylic acid A process for preparing purified 2,6-naphthalenedicarboxylic acid which comprises hydrolyzing a dialkyl-2,6-naphthalenedicarboxylate with water at a reaction temperature of at least about 450° F. under liquid phase condition, the amount of water present ... | 03/17/1998 |
| 5723658 | Process for the preparation of salts of substituted or unsubstituted phthalic acids The present invention relates to a process for the preparation of salts of substituted or unsubstituted phthalic acids, by reacting a compound of the formula ##STR1## in which R1, R2, R3 and R4 are identica... | 03/03/1998 |
| 5679848 | Process for the preparation of terephthalic acid and its isomers A process for the preparation of terephthalic acid (TA) from pure dimethyl terephthalate (DMT) and/or DMT intermediate product by hydrolysis in a countercurrent reactor at a conversion of greater than 99% and crystallization to give the solid product, cha... | 10/21/1997 |
| 5659076 | Process for the production of 2,5-dianilino-terephthalic acids A process for the transesterification of dimethyl succinylsuccinate with one or more aliphatic alcohols which in each case have at least 2 C atoms, in the presence of an acidic catalyst and in the presence or absence of a diluent which is inert under the ... | 08/19/1997 |
| 5654470 | Recovery of components from polyester resins There is described a process for the depolymerization of polyethylene terephthalate into component monomers at ambient pressure. Monomer solids that deposit during cooling, as part of the recovery operation, are removed using a scraped wall heat exchanger... | 08/05/1997 |
| 5629446 | Process for preparing purified 2,6-naphthalenedicarboxylic acid A process for preparing purified 2,6-naphthalenedicarboxylic acid which comprises hydrolyzing a dialkyl-2,6-naphthalenedicarboxylate with water at a reaction temperature of at least about 450° F. under liquid phase condition, the amount of water present ... | 05/13/1997 |
| 5596104 | Preparation of 3,4,6-trifluorophthalic acid 3,4,6-trifluorophthalic acid is prepared in high yield by reaction of a 3,4,6-trichloro-N-substituted phthalimide with potassium fluoride at temperatures in the range of 200° to 270° C. in the absence of a catalyst to form the corresponding trifluoro-N-... | 01/21/1997 |
| 5591877 | Process for the recovery of fluorinated carboxylic acids Fluorinated carboxylic acids can be recovered from materials which contain them by releasing, if necessary, the carboxylic acids with sufficiently strong acids, esterifying the released acids and distilling off the esters. The esters can be advantageously... | 01/07/1997 |
| 5576456 | Recovery of components from polyester resins There is described a process for the depolymerization of polyethylene terephthalate into component monomers using a reactor in which the polyethylene terephthalate is a discontinuous phase which contacts a continuous phase of superheated methanol vapor.... | 11/19/1996 |
