Benzene Ring Bonded Directly To The Ring Nitrogen Of The Five-membered Hetero Patents (Class 548/476)
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Patent number: 4933466Abstract: Cyclic imides are prepared by reacting carbon monoxide with an ortho dihalide aromatic compound or a cis-1,2-vinyl dihalide and an amine in the presence of palladium catalyst and a base. The process is preferably conducted in the presence of a dipolar aprotic solvent as a liquid reaction medium.Acyclic imides are prepared by reacting CO with an activated halide and an amide (primary or secondary) in the presence of a Pd catalyst and a base.Type: GrantFiled: January 17, 1989Date of Patent: June 12, 1990Assignee: Eastman Kodak CompanyInventors: Robert J. Perry, Sam R. Turner
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Patent number: 4933468Abstract: Amide-imides are prepared by reacting carbon monoxide with an ortho dihalide aromatic compound or a cis-1,2-vinyl dihalide having an isolated halogen function, and with an amine, in the presence of palladium catalyst and a base. The process is preferably conducted in the presence of a dipolar aprotic solvent as a liquid reaction medium.Type: GrantFiled: September 11, 1989Date of Patent: June 12, 1990Assignee: Eastman Kodak CompanyInventors: Robert J. Perry, S. Richard Turner
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Patent number: 4933467Abstract: Cyclic imides are prepared by reacting carbon monoxide with an ortho dihalide aromatic compound or a cis-1,2-vinyl dihalide and an amide in the presence of palladium catalyst and a base. The process is preferably conducted in the presence of a dipolar aprotic solvent as a liquid reaction medium.Type: GrantFiled: September 11, 1989Date of Patent: June 12, 1990Assignee: Eastman Kodak CompanyInventors: Robert J. Perry, S. R. Turner
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Patent number: 4933469Abstract: A method is provided for preparing oxybisphthalimides by heating a nitrophthalimide compound in the presence of an alkali metal carboxylate, a phase transfer catalyst and a nonpolar organic solvent.Type: GrantFiled: December 16, 1988Date of Patent: June 12, 1990Assignee: General Electric CompanyInventors: Donald R. Berdahl, Pamela A. Matsch, Susan A. Nye
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Patent number: 4873338Abstract: Compounds corresponding to Formula I ##STR1## wherein R.sup.1 denotes an acyl group andX denotes hydrogen, halogen, alkoxy, aroxy, SO.sub.3 H or a heterocyclic group attached through --O-- or --N<are prepared form a compound corresponding to Formula II ##STR2## wherein X has the meaning already indicated and Q denotes the group required for completing a dicarbonimide ringby reduction of the said compound to the amino compound and acylation into a compound corresponding to Formula III ##STR3## wherein X, Q and R.sup.1 have the meanings indicatedfollowed by conversion of the compound corresponding to Formula III into a compound corresponding to Formula I by hydrazinolytic or hydrolytic decomposition of the dicarbonimide ring.Type: GrantFiled: November 23, 1987Date of Patent: October 10, 1989Assignee: Agfa-Gevaert AktiengesellschaftInventors: Heinz Wiesen, Erich Wolff
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Patent number: 4871475Abstract: Polysulfone and polyethersulfone oligomers are made by the condensation of phenols and halogenated moieties and exhibit improved solvent resistance when capped with crosslinkable end cap imidophenols. Composites made with a blend of the oligomers and corresponding polymers formed from the phenols and halogenated moieties, but without end caps, exhibit superior impact resistance while retaining the desired solvent resistance. Conductive or semiconductive oligomers (or their composites) can be formed by doping suitable oligomers, especially those prepared from Schiff base diols.Type: GrantFiled: October 7, 1985Date of Patent: October 3, 1989Assignee: The Boeing CompanyInventors: Hyman R. Lubowitz, Clyde H. Sheppard
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Patent number: 4868270Abstract: High thermal stabilities are achievable in linear or multidimensional sulfone, solvent resistant oligomers by incorporating oxazole, thiazole, or imidazole linkages into the oligomer backbone. Blended oligomers of crosslinking oligomers and noncrosslinking compatible polymers are also described. The oligomers include residues of four-functional compounds of the formula: ##STR1## wherein M=--CO--, --S--, --O--, --SO.sub.2 -- or --(CF.sub.3).sub.2 C--; andY=--OH, --SH, or --NH.sub.2.In an improved method, the reactants are condensed at or below ambient temperature in the presence of pyridine in a suitable solvent such as N,N'-dimethylacetamide (DMAC).Type: GrantFiled: November 17, 1987Date of Patent: September 19, 1989Assignee: The Boeing CompanyInventors: Hyman R. Lubowitz, Clyde H. Sheppard, Ronald R. Stephenson
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Patent number: 4861882Abstract: Ethynyl terminated imidothioethers (ETIs) are prepared by the reaction of a dimercaptan, such as 4,4'-dimercaptodiphenyl ether, and an ethynyl containing maleimide, such as N-(3-ethynylphenyl)maleimide. Blends of thse ETIs and ethynyl terminated polymeric materials, such as ethynyl terminated sulfones and ethynyl terminated arylene ethers, are also prepared. These resin blends exhibit excellent processability, and the cured blends show excellent fracture toughness and solvent resistance, as well as excellent adhesive and composite properties.Type: GrantFiled: July 14, 1988Date of Patent: August 29, 1989Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Paul M. Hergenrother, John W. Connell, R. Gerald Bass
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Patent number: 4851501Abstract: The solvent resistance of polyethersulfone oligomers is enhanced by using difunctional imidophenol end-cap monomers to provide improved crosslinking. The imidophenol monomers include two unsaturated functionalities capable of cross-linking upon thermal or chemical activation. Blends, pregregs, and compositions using the novel end caps are described for linear or multidimensional polyethersulfone oligomers.Type: GrantFiled: December 17, 1987Date of Patent: July 25, 1989Assignee: The Boeing CompanyInventors: Hyman R. Lubowitz, Clyde H. Sheppard
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Patent number: 4839378Abstract: Fluorophthalimide compounds represented by the following general formula (I): ##STR1## wherein R each stands for an ethyl group or an isopropyl group, are effective for controlling diseases of agricultural plants, especially diseases caused by microorganisms belonging to the genus Rhizoctonia, represented by sheath blight of rice plants, and diseases caused by Basidomycetes.Type: GrantFiled: April 28, 1987Date of Patent: June 13, 1989Assignee: Meiji Seika Kabushiki KaishaInventors: Masao Koyama, Michiaki Iwata, Kunihiko Kurihara, Masaji Sezaki
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Patent number: 4780544Abstract: A method is provided for making oxybisphthalimides by heating an N-organonitrophthalimide in the presence of an aprotic organic solvent in an alkali metal carboxylate.Type: GrantFiled: July 2, 1986Date of Patent: October 25, 1988Assignee: General Electric CompanyInventor: Donald R. Berdahl
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Patent number: 4766243Abstract: A process for the electrophilic ring fluorination of aromatic compounds which comprises reacting a fluorinating agent from the group consisting of CF.sub.3 OF and CF.sub.2 (OF).sub.2 with an aromatic compound of the formula ##STR1## where X is selected from the group consisting of ##STR2## and ##STR3## and Y is selected from the group consisting of --H, --CF.sub.3, --CN, --NO.sub.2, --Cl, and CH.sub.3.Type: GrantFiled: August 10, 1984Date of Patent: August 23, 1988Assignee: Occidental Chemical CorporationInventor: Michael J. Fifolt
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Patent number: 4764217Abstract: Composition containing(a) an isoindoline pigment of the formula I ##STR1## and (b) a compound of the formula II ##STR2## Pigment mixtures of this kind, in particular when used in paints, are distinguished in particular by increased tinctorial strength and high lustre and especially by improved rheology.For the definition of the substituents and symbols R.sub.1, R.sub.2, R.sub.3, R.sub.4, Q, X, Y and Z, see claim 1.Type: GrantFiled: December 7, 1987Date of Patent: August 16, 1988Assignee: Ciba-Geigy CorporationInventors: Jost von der Crone, Bernhard Medinger, Philippe Bugnon
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Patent number: 4755215Abstract: A compound of the formula: ##STR1## wherein R is a C.sub.1 -C.sub.5 alkyl group, a C.sub.3 -C.sub.5 alkenyl group, a C.sub.3 -C.sub.5 alkynyl group or a C.sub.3 -C.sub.7 cycloalkyl group, which is useful as a herbicide.Type: GrantFiled: January 14, 1986Date of Patent: July 5, 1988Assignee: Sumitomo Chemical Company, LimitedInventors: Toru Haga, Eiki Nagano, Ryo Sato, Kouichi Morita
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Patent number: 4739030Abstract: The solvent resistance of polysulfone, polyether sulfone, and polyesters is enhanced by using difunctional end-cap monomers of the present invention to provide improved crosslinking. The imidophenol monomers include two unsaturated functionalities capable of crosslinking upon thermal or chemical activation. Oligomer, oligomer blends, pregregs, and composites using the novel end caps are also described.Type: GrantFiled: January 6, 1986Date of Patent: April 19, 1988Assignee: The Boeing CompanyInventors: Hyman R. Lubowitz, Clyde H. Sheppard
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Patent number: 4737512Abstract: Novel 4-(substituted-isoindol-2-yl)phenoxy-pentanoic and -heptanoic acids and derivatives which are useful as anti-arteriosclerotic agents are disclosed. The compounds elevate the high density lipoprotein fraction of cholesterol and also lower the low density lipoprotein fraction of cholesterol. Methods for preparing and using the compounds are included.Type: GrantFiled: October 27, 1986Date of Patent: April 12, 1988Assignee: Warner-Lambert CompanyInventor: Milton L. Hoefle
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Patent number: 4681949Abstract: Novel bis-aminopyridinium salts are useful as phase transfer catalysts in the preparation of aromatic ethers by the reaction of hydroxyaromatic compound alkali metal salts (e.g., bisphenol A disodium salt) with activated halo- or nitro-substituted aromatic compounds (e.g., 4-nitro-N-methylphthalimide). The bis-aminopyridinium salts may be prepared by the reaction of aminopyridines with bis-carbonium ion-generating compounds such as dibromoalkanes.Type: GrantFiled: April 30, 1986Date of Patent: July 21, 1987Assignee: General Electric CompanyInventor: Daniel J. Brunelle
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Patent number: 4667035Abstract: The novel compounds of the general formula I ##STR1## where R and R.sup.1 are substituents and the rings A can be substituted and/or can carry fused rings, are useful intermediates for the preparation of, for example, dyes and active ingredients.Type: GrantFiled: November 5, 1984Date of Patent: May 19, 1987Assignee: BASF AktiengesellschaftInventors: Helmut Hagen, Rolf-Dieter Kohler
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Patent number: 4666936Abstract: Amide derivatives of 2-(p-aminobenzyl)-butyric acid and esters thereof having a hypolipidemizing and hypocholesterolemizing pharmaceutical activity and their preparation are described.Included are compounds of the formula ##STR1## wherein R and R' together represent the group ##STR2## or the group ##STR3## and R" is hydrogen or a 1 to 6 carbon alkyl group.Type: GrantFiled: August 7, 1985Date of Patent: May 19, 1987Assignee: Medosan Industrie Biochimiche Riunite S.p.A.Inventor: Alessandro Baglioni
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Patent number: 4661630Abstract: Described herein are novel carboxylic acid amide compounds or carboximide compounds represented by the general formula: ##STR1## wherein Z represents either the monoamido radical of an aromatic or cycloaliphatic ortho dicarboxylic acid or the amide of the corresponding anhydride, and their pharmaceutically acceptable salts; processes for the production thereof; and medicines containing the same. The novel compounds are useful as treating, preventing and improving agents for diseases attended with cerebral dysfunction as well as various symptoms caused by the said diseases.Type: GrantFiled: December 2, 1985Date of Patent: April 28, 1987Assignee: Eisai Co., Ltd.Inventors: Yasuji Harigaya, Hiroo Ogura, Mitsuo Mihara, Motosuke Yamanaka, Kiyomi Yamatsu
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Patent number: 4632949Abstract: The present invention relates to novel N-(alkoxyphenyl) phthalimides conforming to the structure ##STR1## wherein X is a halogen atom, R is a C.sub.1 -C.sub.4 alkyl, g is 1 to 5, n is an integer of from 0 to 4, m is either 0 or 1 and p is either 0 or 1. The phthalimide thus disclosed was found to be suitable as a flame retarding additive for thermoplastic molding compositions, especially compositions comprising polycarbonate resins.Type: GrantFiled: December 31, 1984Date of Patent: December 30, 1986Assignee: Mobay Chemical CorporationInventor: Sivaram Krishnan
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Patent number: 4617316Abstract: Insecticidal compounds of the formula: ##STR1## in which A is chloro and B is hydrogen or A and B are both fluoro, X is oxygen or sulfur and one of R.sup.1 and R.sup.2 is or includes an optionally substituted 5-membered heteroaryl ring, their method for preparation and formulation, insecticidal compositions thereof, and their use to control insects, are disclosed and exemplified.Type: GrantFiled: December 20, 1985Date of Patent: October 14, 1986Assignee: FMC CorporationInventor: Ernest L. Plummer
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Patent number: 4615832Abstract: The present invention relates to new phthalimides of the formula (I) ##STR1## wherein n is an integer of from 1 to 12, preferably 1 to 4 and especially 1 to 2 andR is H or F,and their preparation, these phthalimides being suitable, in combination with alkali metal salts, as flameproofing agent combinations for thermoplastic, branched, aromatic polycarbonates.Type: GrantFiled: September 26, 1984Date of Patent: October 7, 1986Assignee: Bayer AktiengesellschaftInventors: Hans-Jurgen Kress, Klaus Kircher
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Patent number: 4605745Abstract: A method is provided for making aromatic ethers by effecting the displacement of reactive radicals on an activated aromatic nucleus such as a phthalimide with a mono or bisalkali metal phenoxide in the presence of an organic solvent and a dialkylamino branched alkyl substituted pyridinium salt as a phase transfer catalyst. Improved yields of bis(aromatic ethers) are achieved without the production of undesirable by-products, such as akylated phenols.Type: GrantFiled: December 24, 1984Date of Patent: August 12, 1986Assignee: General Electric CompanyInventors: Daniel J. Brunelle, Daniel A. Singleton
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Patent number: 4577033Abstract: Heterocyclic quaternary ammonium salts such as N,N-di-n-butylpiperidinium bromide are excellent phase transfer agents for the preparation of aromatic ethers, as by the reaction of the disodium salt of bisphenol A with 4-nitro-N-methylphthalimide.Type: GrantFiled: January 14, 1985Date of Patent: March 18, 1986Assignee: General Electric CompanyInventors: John W. Verbicky, Jr., Alice M. Colley
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Patent number: 4554357Abstract: Bis-quaternary ammonium and phosphonium salts such as bis(tri-n-butyl)-1,6-hexylenediammonium dibromide are excellent phase transfer agents for the preparation of aromatic ether imides, as by the reaction of the disodium salt of bisphenol A with 4-nitro-N-methylphthalimide.Type: GrantFiled: October 14, 1983Date of Patent: November 19, 1985Assignee: General Electric CompanyInventors: John W. Verbicky, Jr., Elbridge A. O'Neil, Jr.
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Patent number: 4533739Abstract: This invention relates to the novel use of certain aromatic substituted amidines as antidiarrheals.Type: GrantFiled: October 12, 1982Date of Patent: August 6, 1985Assignee: G. D. Searle & Co.Inventors: Barnett S. Pitzele, Stella S. T. Yu, Robert W. Hamilton, Alan E. Moormann
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Patent number: 4520204Abstract: The yield of aromatic ether imides prepared by reacting a substituted phthalimide (such as 4-nitro-N-methylphthalimide) with an alkali metal salt of a hydroxyaromatic compound (such as the disodium salt of bisphenol A) in the presence of a phase transfer catalyst is improved by conducting the reaction in o-dichlorobenzene as diluent. When the reaction mixture is subsequently extracted with water and/or aqueous alkali, o-dichlorobenzene can also be used in recovery of the phase transfer catalyst from the aqueous phase by extraction thereof. Such recovery is improved by dissolving a substantial amount of inorganic salt in the aqueous phase and by conducting the o-dichlorobenzene extraction at elevated temperatures.Type: GrantFiled: April 25, 1983Date of Patent: May 28, 1985Assignee: General Electric CompanyInventor: Thomas L. Evans
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Patent number: 4513141Abstract: A method is provided for making aromatic ethers by effecting the displacement of reactive radicals on an activated aromatic nucleus such as a phthalimide with a mono or bisalkali metal phenoxide in the presence of an organic solvent and a dialkylamino branched alkyl substituted pyridinium salt as a phase transfer catalyst. Improved yields of bis(aromatic ethers) are achieved without the production of undesirable by-products, such as alkylated phenols.Type: GrantFiled: April 28, 1983Date of Patent: April 23, 1985Assignee: General Electric CompanyInventors: Daniel J. Brunelle, Daniel A. Singleton
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Patent number: 4489185Abstract: Novel carbinol-containing polyimides capable of self-crosslinking at low temperatures are prepared by reacting a molar excess of selected 3,3',4,4'-benzhydrol tetracarboxylic acid compounds (the tetraacid, diester-diacid, or (dianhydride) with polyfunctional polyamines (e.g. 4,4'-methylenedianiline, 1,6-hexanediamine, etc.) in an inert organic solvent at about 100.degree.-150.degree. C. The molar ratio of tetracarboxylic acid compound to diamine must be between 2:1 and 9:8. The polyimides may be crosslinked at less than 200.degree. C. via a reaction between the carbinol group(s) and the end group(s) of the polyimide.Type: GrantFiled: September 26, 1983Date of Patent: December 18, 1984Inventor: Jules E. Schoenberg
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Patent number: 4480105Abstract: Novel compounds of the formula II ##STR1## are described, in which M.sub.1 and M.sub.2 individually are --OH or together are --O--, X is --NO.sub.2, --OR', --SR' or SO.sub.2 R' and the (R')s independently of one another are C.sub.1-20 -alkyl, C.sub.3-5 -alkenyl, C.sub.3-5 -alkynyl, C.sub.2-4 -monohydroxyalkyl, C.sub.1-12 -halogenoalkyl, benzyl, C.sub.5-12 -cycloalkyl, phenyl, carboxyphenyl, halogenophenyl, nitrophenyl, alkyl- or alkoxy-phenyl each having 1-4 C atoms in the alkyl or alkoxy moieties, or acetylaminophenyl, such as for example 3-n-butylthio-5-nitrophthalic anhydride. The compounds (II) in which M.sub.1 and M.sub.2 together are --O-- are suitable as sensitizers for photo-crosslinkable polymers or as initiators for the photopolymerization of ethylenically unsaturated compounds or for the photochemical crosslinking of polyolefins, and those where M.sub.1 and M.sub.2 are --OH are useful intermediates for those wherein M.sub.1 and M.sub.2 together are --O--.Type: GrantFiled: April 30, 1982Date of Patent: October 30, 1984Assignee: Ciba-Geigy CorporationInventors: Walter Fischer, Vratislav Kvita, Hans Zweifel
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Patent number: 4476309Abstract: A method for making aromatic ether imides is provided by effecting the displacement of reactive radicals on a phthalimide nucleus with a mono- or bis-alkali metal phenoxide in the presence of a nonpolar solvent and a phase transfer catalyst, such as a triorganoborate. The aromatic ether imide made by the present invention are useful intermediates for making aromatic ether anhydrides and aromatic bis(ether anhydrides).Type: GrantFiled: March 21, 1983Date of Patent: October 9, 1984Assignee: General Electric CompanyInventors: John W. Verbicky, Jr., Elbridge A. O'Neil, Jr.
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Patent number: 4476184Abstract: Resins are prepared from polymers that bear monofunctional or difunctional groups derived from compounds that are condensation products of amino-phenols and acid anhydrides. The polymers are prepared by coreacting aromatic compounds holding two hydroxyl groups, aromatic compounds holding two active halogen groups, and the condensation product of amino-phenol and acid anhydride, the condensation product holding one hydroxyl group. The resulting product has a molecular weight between about 1,000 and 40,000, preferably between about 5,000 and 30,000, and can be cross-linked to form a resin that is thermoplastic and solvent resistant.Type: GrantFiled: August 9, 1983Date of Patent: October 9, 1984Assignee: The Boeing CompanyInventors: Hyman R. Lubowitz, Clyde H. Sheppard
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Patent number: 4471125Abstract: A method is provided for making aromatic ether imides in the substantial absence of a solvent. A mixture of at least one halo-substituted phthalimide and at least one anhydrous alkali metal phenoxide salt is heated at a temperature at least sufficient to convert the halo-substituted phthalimide to the molten state and below the temperature at which the alkali metal phenoxide is thermally unstable.Type: GrantFiled: September 29, 1982Date of Patent: September 11, 1984Assignee: General Electric CompanyInventors: John W. Verbicky, Jr., Brent A. Dellacoletta
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Patent number: 4467100Abstract: Imide-amides having the structure ##STR1## wherein ##STR2## are certain cycloaliphatic or aromatic groups and R and R individually are hydrogen, halogen, an alkyl group having from 1 to 4 carbon atoms, hydroxy, carboxyl, and amine and when taken together represent ##STR3## wherein R.sup.2 is the same as R and R.sup.1, have been found to provide cured epoxy resin systems characterized by high temperature stability and excellent mechanical and physical properties.Type: GrantFiled: July 21, 1982Date of Patent: August 21, 1984Assignee: Lord CorporationInventors: Raj N. Gounder, John T. Geary
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Patent number: 4428977Abstract: A water soluble composition including an amine or ammonium salt of a polyimide precursor which is obtained by the reaction steps of: reacting a tetracarboxylic compound and a diamine in about equimolar amounts in a water miscible organic solvent to obtain the polyimide precursor; and reacting the polyimide precursor with ammonia, or an aqueous solution of ammonia, or a primary or secondary aliphatic amine in an amount sufficient to neutralize the free carboxyl groups of the polyimide precursor.A process of coating and a substrate are also disclosed.Type: GrantFiled: September 24, 1976Date of Patent: January 31, 1984Assignee: General Electric CompanyInventor: Marvin A. Peterson
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Patent number: 4414269Abstract: Resins are prepared from polysulfone and polyethersulfone polymers that bear functional groups derived from compounds that are condensation products of amino-phenols and acid anhydrides. The polymers are prepared by coreacting aromatic compounds holding two hydroxyl groups, aromatic compounds holding two active halogen groups, and the condensation product of amino-phenol and acid anhydride, the condensation product holding one hydroxyl group. The resulting product has a molecular weight between about 1,000 and 40,000, preferably between about 5,000 and 30,000, and can be cross-linked to form a resin that is thermoplastic and solvent resistant.Type: GrantFiled: June 16, 1981Date of Patent: November 8, 1983Assignees: TRW, Inc., The Boeing CompanyInventors: Hyman R. Lubowitz, Clyde H. Sheppard
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Patent number: 4396516Abstract: This invention is a lubricant comprising an imide compound obtained by reacting a dibasic acid selected from the group consisting of succinic acid, maleic acid, glutaric acid and phthalic acid with a primary amine having a C.sub.8 -C.sub.18 hydrocarbon radical.The lubricant of the invention may be used in combination with a specified diamine derivative and known lubricant additives, and exhibits excellent lubricating properties.Type: GrantFiled: June 9, 1981Date of Patent: August 2, 1983Assignee: Nippon Oil Company, Ltd.Inventors: Hirotsugu Kinoshita, Hiroshi Uemura, Makoto Sekiya, Kazuyoshi Mitamura
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Patent number: 4380466Abstract: A novel hexahydroisoindole derivative of the formula, ##STR1## which can be produced by dehydration of the corresponding 3a-hydroxy-octahydroisioindole derivative or by reaction of the corresponding 3-chloro-hexahydroisoindole with a thiol sulfonate.The derivative is useful as an intermediate for producing a compound having a substituted or unsubstituted thiol group at 3-position and can be utilized as a herbicide possessing low toxicity to crops and animal.Type: GrantFiled: May 20, 1981Date of Patent: April 19, 1983Assignee: Takeda Chemical Industries, Ltd.Inventor: Yasuo Ishida
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Patent number: 4363917Abstract: Novel compounds of the formula I or II ##STR1## are described, in which M.sub.1 and M.sub.2 individually are --OH or together are --O--, R is hydrogen, C.sub.1-20 -alkyl, C.sub.2-5 -alkenyl, C.sub.3-5 -alkynyl, C.sub.5-12 -cycloalkyl, benzyl, phenyl or toluyl, X is --NO.sub.2, --OR', --SR' or --SO.sub.2 R' and the (R')s independently of one another are C.sub.1-20 -alkyl, C.sub.3-5 -alkenyl, C.sub.3-5 -alkynyl, C.sub.2-4 -monohydroxyalkyl, C.sub.1-12 -halogenoalkyl, benzyl, C.sub.5-12 -cycloalkyl, phenyl, carboxyphenyl, halogenophenyl, nitrophenyl, alkyl- or alkoxy-phenyl each having 1-4 C atoms in the alkyl or alkoxy moieties, or acetylaminophenyl. The compounds (I) and compounds (II) in which M.sub.1 and M.sub.2 together are --O-- are suitable as sensitizers for photocrosslinkable polymers or as initiators for the photopolymerization of ethylenically unsaturated compounds or for the photochemical crosslinking of polyolefins.Type: GrantFiled: April 28, 1981Date of Patent: December 14, 1982Assignee: Ciba-Geigy CorporationInventors: Walter Fischer, Vratislav Kvita, Hans Zweifel