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Wearable Device For Feeding and Observing Birds and Other Flying Animals
A device for feeding and observing flying animals comprising a hat, a support mounted on the hat and extending outward from the hat, and a feeder mounted on the support.
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| Number | Title | Issue Date |
| 7863463 | Method of purifying dianhydrides Disclosed herein is a method for purification of dianhydrides comprising a substantial amount (10000 ppm or more) of at least one metal salt. In one aspect the method is useful for the purification of dianhydrides prepared by the reaction of a halophthalic anhydride... | 01/04/2011 |
| 7842824 | Biphenyltetracarboxylic acid dianhydride and process for producing the same, and polyimide formed from the same and process for producing the same To provide a process for producing BPDA whereby high productivity is attained while high purity is maintained. A process for producing biphenyltetracarboxylic acid dianhydride, which comprises heating biphenyltetracarboxylic acid to produce biphenyltetracarbo... | 11/30/2010 |
| 7674920 | Methods for preparing oxydiphthalic anhydrides, oxydiphthalic anhydrides prepared thereby, and polyetherimides derived therefrom A method for preparing an oxydiphthalic anhydride comprises contacting, under reactive and substantially anhydrous conditions in a reactor, at least one halophthalic anhydride containing more than 250 ppm chlorophthalide impurity with a carbonate of the formula M | 03/09/2010 |
| 7585984 | Perdeuterated polyimides, their process of preparation and their use as materials which are transparent within the region from 2500 to 3500 cm The present invention relates to a deuterated polyimide, the backbone of which comprises an alternation between: at least one repeat unit corresponding to the following formula (I): | 09/08/2009 |
| 7446214 | Method for purifying oxybisphthalic anhydrides A method for purifying dianhydrides is provided. In one aspect, purified oxybisphthalic anhydrides, intermediates useful in the preparation of polyetherimides are provided. In one embodiment, a first solution containing a dianhydride compound, a solvent, and a phase... | 11/04/2008 |
| 7268237 | Direct dianhydride synthesis This invention is related to a method for making diether dianhydrides by the reaction of halophthalic anhydride and a metal salt of an aromatic dihydroxy compound in the presence of a solvent and a phase transfer catalyst. Typical phase transfer catalyst include gua... | 09/11/2007 |
| 7217827 | Halogen-containing aromatic compound The present invention relates to halogen-containing aromatic compounds and methods thereof. The present invention relates a halogen-containing aromatic acid dianhydride, halogen-containing aromatic tetranitrile compound, halogen-containing m-phenylenediamine compoun... | 05/15/2007 |
| 7153394 | System to isolate dianhydrides A process to isolate dianhydride from an exchange reaction comprises extracting a bisimide/anhydride exchange reaction aqueous phase with an organic solution comprising an exchange catalyst at a first temperature and pressure to form an extracted aqueous phase compr... | 12/26/2006 |
| 7053168 | Method for preparing polyimide and polyimide prepared thereby A method for preparing a polyimide includes introducing a mixture of an oligomer and a solvent to an extruder, removing solvent via at least one extruder vent, and melt kneading the oligomer to form a polyimide. The polyimide has a low residual solvent content. The ... | 05/30/2006 |
| 7041773 | Polyimide sulfones, method and articles made therefrom Polyimide sulfone resins are provided with a glass transition temperature of from 200–350° C., residual volatile species concentration of less than 500 ppm and a total reactive end group concentration of less than about 120 milliequivalents/kilogram resin. The re... | 05/09/2006 |
| 7037637 | Photosensitive polyimide resin precursor composition, optical polyimide obtained from the composition, optical waveguide using the polyimide, and process for producing the optical waveguide A photosensitive polyimide resin precursor composition capable of providing a polyimide resin that is not substantially colored, is transparent and has heat resistance, an optical polyimide resin obtained from the composition, and an optical waveguide using the poly... | 05/02/2006 |
| 6918958 | Acid pigment dispersants and pigment preparations The invention relates to pigment dispersants of the formula (I), and to pigment preparations including at least one organic pigment and at least one pigment disperant of the formula (I): wherein Q1, R1 | 07/19/2005 |
| 6916959 | Halogen-containing aromatic compound The present invention relates to halogen-containing aromatic compounds and methods thereof. The present invention relates a halogen-containing aromatic acid dianhydride, halogen-containing aromatic tetranitrile compound, halogen-containing m-phenylenediamine compoun... | 07/12/2005 |
| 6881815 | Method for the preparation poly(etherimide)s A method for the synthesis of poly(etherimide)s comprises the reaction of 4-halotetrahydrophthalic anhydride with an activating primary amine to yield an activated 4-halotetrahydrophthalimide. Activated 4-halotetrahydrophthalimide may then be aromatized and treated ... | 04/19/2005 |
| 6727370 | Method for preparing oxydiphthalic anhydrides using bicarbonate as catalyst Oxydiphthalic anhydrides such as 4-oxydiphthalic anhydride are prepared by the reaction of a halophthalic anhydride with an alkali metal carbonate such as potassium carbonate in the presence of a catalyst system comprising an alkali metal bicarbonate such as potassi... | 04/27/2004 |
| 6710187 | Process to isolate dianhydrides A process to isolate dianhydride from an exchange reaction comprises extracting a bisimide/anhydride exchange reaction aqueous phase with an organic solution comprising an exchange catalyst at a first temperature and pressure to form an extracted aqueous phase compr... | 03/23/2004 |
| 6706897 | Method for preparing oxydiphthalic anhydrides using guanidinium salt as catalyst Oxydiphthalic anhydrides such as 4-oxydiphthalic anhydride are prepared by the reaction of a halophthalic anhydride with an alkali metal carbonate such as potassium carbonate. The reaction proceeds in the presence of a hexaalkylguaninium halide or α,ω-bis(pentaalk... | 03/16/2004 |
| 6600053 | Method of preparing photosensitive resin composition A 6,6'-dialkyl-3,3',4,4'-biphenyltetracarboxylic dianhydride is prepared by brominating a 4-alkylphthalic anhydride at its 5-position, and coupling the bromination product in the presence of a nickel catalyst; A photosensitive resin composition containing... | 07/29/2003 |
| 6590108 | Methods for the preparation of dianhydrides A method for the synthesis of a dianhydride comprises transimidation of bis (imide) (IV) ##STR1## in the presence of a substituted phthalic anhydride or 4-substituted tetrahydrophthalic anhydride to yield dianhydride (V) ##STR2##... | 07/08/2003 |
| 6204394 | Method for preparing oxy-diphthalic anhydrides Disclosed is a method for preparing oxy-diphthalic anhydrides, which comprises reacting a halo-phthalic anhydride represented by the formula (1): ##STR1## where Hal represents F, Cl, Br or I, with a carbonate salt selected from the group consisting o... | 03/20/2001 |
| 6060575 | 1,4-bis(3,4-dicarboxyphenoxy)-2-tert-butylbenzene dianhydride and method of using the same The present invention provides a series of easily processable poly(ether-imide)s that are organic-soluble and can afford colorless films, their organic solutions and their manufacturing process. The poly(ether-imide) is prepared from a dianhydride and a d... | 05/09/2000 |
| 6031061 | Bis (triaklyltrimellitic anhydride) derivative and polyesterimide for optical communications formed therefrom A bis(trisubstitutedtrimellitic anhydride) derivative and a polyesterimide for optical communications, the polyesterimide being formed therefrom. The polyesterimide has a high refractive index, so that when using such polyesterimide as a material for a co... | 02/29/2000 |
| 6028203 | Phase transfer catalyzed method for prepared oxybisphthalic compounds Oxybisphthalic compounds such as 4,4'-oxybis(N-methylphthalimide) and 4,4'-oxybis(phthalic anhydride) are prepared from the corresponding nitro- or halo-substituted phthalic compounds by reaction with an alkanoate or carbonate salt in a non-polar solvent ... | 02/22/2000 |
| 5849934 | Method for preparing aromatic compounds A perfluorinated polyimide comprising a repeating unit represented by general formula (1): ##STR1## and a perfluorinated poly(amic acid) comprising a repeating unit represented by general formula (6): ##STR2## wherein R1 is a tet... | 12/15/1998 |
| 5750731 | Perfluorinated aromatic compounds A perfluorinated aromatic compound represented by general formula (7): ##STR1## wherein R3 is a tetravalent perfluorinated aromatic group represented by formula (8): ##STR2## wherein (R4)s are the same, each being a carboxy... | 05/12/1998 |
| 5675020 | Ortho-bis(etherdianhydrides) Disclosed herein are novel poly(imide-ethers) containing ortho substitution in the main chain of the polymer. These polymers are made from novel aromatic bis-carboxylic anhydrides which contain two ether groups attached to an aromatic ring in ortho positi... | 10/07/1997 |
| 5412009 | Flame retardant compounds comprising fully brominated dianhydrides The invention provides a compound of general formula I ##STR1## in which X represents a direct bond or a ##STR2## group.... | 05/02/1995 |
| 5342968 | Process for producing sulfonylbis (phthalic anhydride) A process for making relatively high purity eulfonylbis(phthalic anhydride) is provided. 3,3',4,4'-tetramethyl diphenyl sulfone is catalytically oxidized in a solvent under liquid phase elevated temperature and pressure conditions. The catalyst is constit... | 08/30/1994 |
| 5336788 | Method of making oxydiphthalic anhydride Disclosed is a method of making oxydiphthalic anhydride from oxydiphthalic acid. The oxydiphthalic acid is mixed with an organic liquid that codistills with water and the resulting slurry is heated to the boiling point of the slurry to remove any water. A... | 08/09/1994 |
| 5336787 | Process of making selected poly(dianhydrides) compounds A process of making poly(dianhydride) compounds having formulae (I) and (II): ##STR1## where m is 0 to 50. ##STR2## wherein n is 0 to 20 and X is bond junction, oxygen atom, sulfur atom, SO2, C(CF3), CO, C(CH3 | 08/09/1994 |
| 5274126 | Partially fluorinated tetracarboxylic acid and the dianhydride thereof, a process for their preparation and their use A compound of the formula ##STR1## and the dianhydride thereof are prepared by air oxidation in the presence of a catalyst mixture composed of at least 2 heavy metal salts and also bromine in an acid organic medium. The compounds can be employed for ... | 12/28/1993 |
| 5258530 | Process for producing biphenyltetracarboxylic dianhydride A process for producing a biphenyltetracarboxylic dianhydride which comprises the step of: heating phthalic anhydride at a temperature of from 135° to 300° C. in the presence of a palladium catalyst thereby to allow the phthalic anhydride to undergo a d... | 11/02/1993 |
| 5235070 | Suppression of dust from solid aromatic anhydrides A method for reducing the formation of dust produced by solid aromatic anhydrides, and aromatic anhydride compositions that have a reduced tendency to emit aromatic anhydride dust, are disclosed. The method comprises treating the aromatic anhydride with l... | 08/10/1993 |
| 5206335 | Selected poly(dianhydrides) Poly(dianhydride) compounds having formulae (I) and (II): ##STR1## where m is 0 to 50. ##STR2## wherein n is 0 to 20 and X is bond junction, oxygen atom, sulfur atom, SO2, C(CF3), CO, C(CH3)2, CF1... | 04/27/1993 |
| 5198555 | Dianhydrides from catalyzed reaction of monoanhydide monoacid halides with polyalkylated mononuclear aromatics The invention relates to the preparation of novel dianhydrides of the formula: ##STR1## wherein R is a polyalkylated mononuclear aromatic radical, preferably a phenylene radical. The mononuclear aromatic radical may be substituted with from thre... | 03/30/1993 |
| 5194633 | Preparation of 1,1,1,3,3,3-hexafluoro-2,2-Di(3,4-dicarboxyphenyl)propane anhydride A process for preparing 1,1,1,3,3,3-hexafluoro-2,2-di(3,4-dicarboxyphenyl) propane anhydride is disclosed. 1,1,1,3,3,3-hexafluoro-2,2-di(3,4 -dimethylphenyl) propane is oxidized under liquid phase conditions in the presence of an oxygen-containing gas, br... | 03/16/1993 |
| 5187285 | Producing bis(alicyclic) thioethers 3,3'-Thiobis(2,5-dihydrothiophene-1,1-dioxides) on heating with a reactive Diels-Alder dienophile undergo a reaction producing thioethers having two six-membered alicyclic rings in the molecule, such as 4,4'-thiobis(3,6-dihydrophthalic acids) or the ester... | 02/16/1993 |
| 5185454 | Process for the preparation of symmetrical diarylacetylenes Symmetrical diaryl-acetylenes can be prepared by reacting an aryl halide with acetylene in the presence of a palladium catalyst and a base. If the acetylene is introduced into the liquid reaction mixture using a high intensity gas dispersion means, the ar... | 02/09/1993 |
| 5183838 | Acid anhydride complex and process for producing same, and composition containing same An acid dianhydride complex which is characterized in anti-hydrolysis, good stability, and high solubility in an organic solvent, is prepared by a reaction of a basic organic compound having a donor number of at least 20 and being free from an active hydr... | 02/02/1993 |
| 5166365 | Fluorine-containing aromatic compound, process for preparing the same and use thereof A novel fluorine-containing aromatic compound of the formula: ##STR1## wherein X is ##STR2## in which Rf is a perfluoroalkyl group having 1 to 10 carbon atoms, Rf ' is a perfluoroalkyl group having 1 to 12 carbon atoms, p is an ... | 11/24/1992 |
