Phase transfer catalyzed preparation of aromatic polyether polymers
What is claimed is: 1. A method for preparing an aromatic polyether polymer which comprises contacting, in a solvent having a polarity no higher than that of o-dichlorobenzene, 1,24-trichlorobenzene a... Read More
Inventors: Brunelle, Daniel J.;, Assignee: General Electric Company (Schenectady, NY) |
Catalyst for producing phthalic anhydride and process by using the same
The present invention provides a catalyst further improved on the catalyst performance compared with hitherto-known conventional catalysts and, therefore, useful for producing phthalic anhydride. Acco... Read More
Inventors: Ueda, Kenji; Okuno, Masaaki; Kawabata, Tatsuya; Tanaka, Shinya;, Assignee: Nippon Shokubai Co., Ltd. (Osaka, JP) |
Photochlorination of phthalic anhydride
OF THE INVENTION This invention relates to a process for forming 4-chlorophthalic anhydride. (4CPAN) is a useful intermediate for the formation of diphthalic anhydrides. For example, 4-chlorophthalic... Read More
Inventors: Seper, Karl W.; Molinaro, John R.;, Assignee: Occidental Chemical Corporation (Niagara Falls, NY) |
Method of preparing aromatic ether bisimides
OF THE INVENTION The general reaction which occurs when employing this invention is the nucleophilic displacement reaction of at least one substituted phthalimide with at least one alkali metal salt ... Read More
Inventors: Dellacoletta, Brent; Odle, Roy R.;, Assignee: General Electric Company (Pittsfield, MA) |
Catalysis for the production of maleic anhydride containing vanadium-phosphorus oxide with selected promoter elements
What is claimed is: 1. An active, phosphorus vanadium oxide catalyst for the conversion to maleic anhydride of a non-aromatic hydrocarbon having at least four carbon atoms in a straight chain, said ca... Read More
Inventors: Andrews, William J.; Ebner, Jerry R.; Felthouse, Timothy R.;, Assignee: Huntsman Specialty Chemicals Corporation (Salt Lake City, UT) |
Cation and vanadium substituted heteropolyacid catalysts for vapor phase oxidation
This invention provides a heteropolyacid catalyst for the oxidation of n-butane to maleic anhydride comprising a crystalline oxide of formula I or formula II: H.sub.n PM.sub.12-x-y V.sub.x A.sup.z.sub... Read More
Inventors: Kourtakis, Kostantinos;, Assignee: E. I. Du Pont de Nemours and Company (Wilmington, DE) |
Process for preparing 3-chloroanthranilic alkyl esters of high purity from 3-chloroanthranilic acid
We claim: 1. A process for preparing a 3-chloroanthranilic alkyl ester, comprising the following steps: a. reacting 3-chloroanthranilic acid, in an inert solvent, with from 0.8 to 5 parts by weight of... Read More
Inventors: Semler, G unther; Meier, Michael;, Assignee: Hoechst Aktiengesellschaft (DE) |
Preparation of 3-chlorophthalic anhydride
The present invention relates to a process for preparing essentially pure 3-chlorophthalic anhydride from a mixture in which 3-chlorophthalic anhydride is present in addition to 4,5-dichlorophthalic a... Read More
Inventors: Baur, Karl Gerhard; Brunner, Erwin; Brandt, Eckhardt;, Assignee: BASF Aktiengesellschaft (Ludwigshafen, DE) |
Process for preparing bis(ether anhydrides) using alkylamine derived bisimides having low melting temperatures
The melting temperatures of the alkylamines employed according to this invention allow the phthalimide synthesis step of this invention to employ liquid reactant. The alkylamines according to this in... Read More
Inventors: Dellacoletta, Brent; Odle, Roy Ray; Guggenheim, Thomas L.; Greenberg, Ronald A.; Barren, James P.; King, Joseph A.; Baghel, Sunita Singh; Haitko, Deborah A.; Hawron, David G.;, Assignee: General Electric Company (Pittsfield, MA) |
Single crystal pulling apparatus
In view of the above problem, it is an object of the present invention to provide a single crystal pulling apparatus which enables stabilization of the quality of a single crystal semiconductor, by re... Read More
Inventors: Atami, Takashi; Furuya, Hisashi; Kida, Michio;, Assignee: Mitsubishi Materials Silicon Corporation (Tokyo, JP); Mitsubishi Materials Corporation (Tokyo, JP) |
Aqueous hexasubstituted guanidinium chlorides and methods for their preparation and use
; PREFERRED EMBODIMENTS The hexasubstituted guanidinium (hereinafter sometimes simply "guanidinium" for brevity) chlorides which are the subject of the present invention include all those disclosed in... Read More
Inventors: Caringi, Joseph John; Faler, Gary Ray; Phelps, Peter David; Guggenheim, Thomas Link; Flowers, Larry Ivis; Brunelle, Daniel Joseph; Odle, Roy Ray;, Assignee: General Electric Company (Schenectady, NY) |
Process for preparing BIS(ether anhydrides) using alkylamine derived bisimides having low melting temperature
The melting temperatures of the alkylamines employed according to this invention allow the phthalimide synthesis step of this invention to employ liquid reactant The alkylamines according to this inv... Read More
Inventors: Dellacoletta, Brent; Odle, Roy Ray; Guggenheim, Thomas L.; Greenberg, Ronald A.; Barren, James P.; King, Joseph A.; Baghel, Sunita Singh; Haitko, Deborah A.; Hawron, David G.;, Assignee: General Electric Co. (Pittsfield, MA) |
Polyetherimide resin compositions with improved ductility
OF THE INVENTION In a preferred embodiment, the thermoplastic resin composition of the present invention is comprises, based on 100 parts by weight ("pbw") of the thermoplastic resin composition, fro... Read More
Inventors: Puyenbroek, Robert;, Assignee: General Electric Company (Pittsfield, MA) |
Slurry preparation of bis (halophthalimides) and of polyether polymers
PREFERRED EMBODIMENTS Any diamino compound may be employed in the method of this invention. Examples of suitable compounds are ethylenediamine, propylenediamine, trimethylenediamine, diethylenetriami... Read More
Inventors: Khouri, Farid Fouad; Kailasam, Ganesh; Caringi, Joseph John; Phelps, Peter David; Howson, Paul Edward;, Assignee: General Electric Company (Schenectady, NY) |
Unsaturated nitrile-conjugated diene-typed rubber, rubber composition and process for the productions of the same
OF THE INVENTION The term "unsaturated nitrile-conjugated diene-typed rubbers (hereinafter referred to as "NBR-typed rubber") in the invention means a random copolymer produced by copolymerizing mono... Read More
Inventors: Sakata, Katsuhiko; Ishikawa, Osamu;, Assignee: JSR Corporation (Tokyo, JP) |
Acyl and ester derivatives of 1,3-diazabicyclo[3,3,0]octane
What is claimed is: 1. An optically active or racemic compound represented by the general formula (1), ##STR8## wherein A represents a C.sub.6 -C.sub.14 carbocyclic aryl group or a C.sub.1 -C.sub.4 al... Read More
Inventors: Mukaiyama, Teruaki; Sakito, Yoji; Asami, Masatoshi;, Assignee: Sumitomo Chemical Company, Limited (Osaka, JP) |
Water purification system
OF THE INVENTION It is of paramount importance in various sections of the world at the present time to provide means for increasing the supply of potable water. It is also of great importance that th... Read More
Inventors: Sear, Walter E.;, Assignee: |
High performance solar still
What is claimed is: 1. A high performance solar distillation apparatus for vaporization and condensation of pure water from saline and brackish waters, comprising: a. a generally flat double plate hea... Read More
Inventors: Swaidan, Brian E.;, Assignee: The United States of America as represented by the Secretary of the Navy (Washington, DC) |
Process for distilling water and distillation apparatus
It is an object of the present invention to provide a process for distilling water in a high heat efficiency. A further object of the invention is to provide an apparatus for distilling water, the str... Read More
Inventors: Tsumura, Kenji; Yamashita, Masayuki;, Assignee: Oriental Metal Mfg. Co., Ltd. (Amagasaki, JP) |
Solar apparatus and process
What is claimed is: 1. Solar apparatus for producing alcohol including a frame portion, a heating portion, a slurry-forming portion, a fermentation portion, a distillation portion, a condensation port... Read More
Inventors: McCarthy, Walton W.;, Assignee: Entropy Dynamics (Bozeman, MT) |
Automated solar still
I claim: 1. An automated solar still having a temperature sensitive valve incorporated within a deployed solar absorber panel, comprising: a feedwater storage tank having an opening for supplying feed... Read More
Inventors: Wyckoff, Robert L.;, Assignee: |
Solar distillation device
I claim: 1. A distillation plant for distilling liquids, the distillation plant comprising: a plurality of containers, arranged in rows, for containing an undistilled liquid; a plurality of opaque hea... Read More
Inventors: Finney, David S.;, Assignee: |
Plastic covered solar still
The invention is directed to a light weight, solar still comprised of at least one upwardly open, thermally insulated pan for holding a liquid to be distilled, an open wire frame overlying said pan an... Read More
Inventors: Wilkerson, Jr., William M.;, Assignee: |
Process and apparatus for the production of fresh water using solar energy
I claim: 1. In a process for the production of fresh water from water containing impurities using solar energy, said process comprising providing an installation constituted by a structure oriented to... Read More
Inventors: Guy, Blondel;, Assignee: |
Apparatus for recovering fresh water and apparatus for concentrating liquid
It is an object of the present invention to provide an apparatus for recovering fresh water at a high efficiency and an apparatus for concentrating a liquid at high efficiency. For achieving the above... Read More
Inventors: Hirota, Toshizumi; Kobayashi, Hitoshi; Nakagoshi, Yasunobu; Amino, Yukio;, Assignee: Mitsubishi Corporation (Tokyo, JP); Mitsubishi Gas Chemical Company, Inc. (Tokyo, JP); Nihon Polytech Co., Ltd. (Hyogo, JP) |
Polyimide, a method for manufacturing the same, a gas separation membrane using the polyimide and a method for manufacturing the same
It is an object of the present invention to provide a novel polyimide having more excellent permeation performance, high permeability and high separation selectivity, and having excellent chemical res... Read More
Inventors: Maeda, Masatoshi;, Assignee: Nitto Denko Corporation (Osaka, JP) |
Recycling silicon photovoltaic modules
What is claimed is: 1. A method for recycling crystalline silicon photovoltaic modules, said method comprising: providing a crystalline silicon photovoltaic module comprising a glass substrate, at lea... Read More
Inventors: Bohland, John Raphael; Anisimov, Igor Ivanovich;, Assignee: First Solar, LLC (Toledo, OH) |
System and method for solar distillation
The present invention is directed to an improved solar powered distillation system and method that can be provided, cost effectively, to the masses of people worldwide. The improved solar powered dist... Read More
Inventors: Foster, Robert E.; Cormier, Michael J.; Vogel, Gregory R.;, Assignee: SolAqua, Inc. (El Paso, TX) |
Rotating evaporator with process-dependent rotating speed regulation
The invention is based on the technical problem of indicating a device and a process for evaporating at least one substance with good efficiency. This technical problem is solved according to the inve... Read More
Inventors: Genser, Hans Georg;, Assignee: |
Method of and apparatus for the recirculation of fluids in a closed circuit
What is claimed is: 1. In a method of liquid recirculation in an at least substantially closed circuit having a circuit inlet and a circuit outlet by moving the circulating liquid into the inlet of th... Read More
Inventors: Minarik, Milan; Popl, Milan; Mostecky, Jiri;, Assignee: Vysoka skola chemicko-technologicka (Praha, CS) |
Liquid Purification 
