Nitrogen Or Additional Chalcogen Attached Directly Or Indirectly To The Cyclic Anhydride By Nonionic Bonding Patents (Class 549/253)
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Patent number: 12103910Abstract: Novel organoselenium selective ligands are presented and designed to determine metal ions in a sample. These ligands are used as complexing agents in a dispersive liquid-liquid microextraction procedure of copper and zinc ions. The procedure has a shortened extraction time, minimal organic solvent types, and lower amounts of solvents, as well as easy operation and high enrichment efficiency.Type: GrantFiled: September 12, 2023Date of Patent: October 1, 2024Assignee: KING FAISAL UNIVERSITYInventors: Hany Mohamed Abd El-Lateef Ahmed, Saadeldin Elsayed Ibrahim Shabaan, Mai Mustafa Khalaf Ali, Mohamed Gouda, Wael I. Mortada
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Patent number: 11999685Abstract: Novel organoselenium selective ligands are presented and designed to determine metal ions in a sample. These ligands are used as complexing agents in a dispersive liquid-liquid microextraction procedure of copper and zinc ions. The procedure has a shortened extraction time, minimal organic solvent types, and lower amounts of solvents, as well as easy operation and high enrichment efficiency.Type: GrantFiled: September 12, 2023Date of Patent: June 4, 2024Assignee: KING FAISAL UNIVERSITYInventors: Hany Mohamed Abd El-Lateef Ahmed, Saadeldin Elsayed Ibrahim Shabaan, Mai Mustafa Khalaf Ali, Mohamed Gouda, Wael I. Mortada
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Patent number: 11976033Abstract: Novel organoselenium selective ligands are presented and designed to determine metal ions in a sample. These ligands are used as complexing agents in a dispersive liquid-liquid microextraction procedure of copper and zinc ions. The procedure has a shortened extraction time, minimal organic solvent types, and lower amounts of solvents, as well as easy operation and high enrichment efficiency.Type: GrantFiled: September 12, 2023Date of Patent: May 7, 2024Assignee: KING FAISAL UNIVERSITYInventors: Hany Mohamed Abd El-Lateef Ahmed, Saadeldin Elsayed Ibrahim Shabaan, Mai Mustafa Khalaf Ali, Mohamed Gouda, Wael I. Mortada
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Patent number: 8772329Abstract: The present invention relates to compounds from mycelium of Antrodia cinnamomea. The present invention also relates to a composition and a method for treating or prophylaxis of hepatitis C virus (HCV) infection.Type: GrantFiled: January 28, 2008Date of Patent: July 8, 2014Assignee: Simpson Biotech Co., Ltd.Inventors: Chia-Chin Sheu, Masao Hattori
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Publication number: 20120149653Abstract: In accordance with the present invention, novel multifunctional compounds have been developed which have orthogonal reactive groups thereon, thereby facilitating preparation of compounds having multiple functional properties (e.g., a targeting moiety and a biologically active moiety). Such constructs are useful for a variety of applications, e.g., for the delivery of biologically compatible materials, and release thereof in active form. Therefore, in accordance with the present invention, there are provided multifunctional linkers of defined structure, as well as various derivatives thereof bearing one or more biologically active components thereon. Also provided in accordance with the present invention are methods for the preparation of such constructs, as well as various uses thereof.Type: ApplicationFiled: December 14, 2010Publication date: June 14, 2012Inventors: Alexander Chucholowski, Alisher Khasanov, Gregory Parker, Tong Zhu
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Publication number: 20120004327Abstract: The invention relates to a water-insoluble reaction product of an oil-soluble high carbon polar modified polymer and a polyamine.Type: ApplicationFiled: December 16, 2009Publication date: January 5, 2012Applicant: L'OREAL S.A.Inventors: Hy Si Bui, Mohamed Kanji, Chunhua Li, Anita Chon Tong, Susan Halpern, Bruno Bavouzet
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Publication number: 20100286227Abstract: The present invention relates to compounds from mycelium of Antrodia cinnamomea. The present invention also relates to a composition and a method for treating or prophylaxis of hepatitis C virus (HCV) infection.Type: ApplicationFiled: January 28, 2008Publication date: November 11, 2010Applicant: SIMPSON BIOTECH CO., LTD.Inventors: Chia-Chin Sheu, Tun-Tschu Chang, Masao Hattori
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Publication number: 20100273801Abstract: The invention relates to compouns derived from betulin, and to the use thereof as antibacterial agents in pharmaceutical and cosmetic applications.Type: ApplicationFiled: June 6, 2007Publication date: October 28, 2010Applicant: Valition teknillinen tutikimuskeskusInventors: Jari Yli-Kauhaluoma, Salme Koskimies, Sami Alakurtti, Taru Mäkelä, Päivi Tammela
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Publication number: 20100159219Abstract: Disclosed herein are methods of making a negative pattern of carbon nanotubes or a polymerized carbon nanotube composite having an interpenetrating polymer network (IPN) by modifying the surfaces of the carbon nanotubes with polymerizable functional groups such as oxirane and anhydride groups and subjecting the surface-modified carbon nanotubes either to a photolithography process or to a heatcuring process. By virtue of the present invention, desired patterns of carbon nanotubes can be easily made on the surfaces of various substrates, and polymerized carbon nanotube composites improved in hardening properties can be made without additional polymers.Type: ApplicationFiled: October 9, 2009Publication date: June 24, 2010Inventors: Jong Jin Park, Jung Han Shin, Sang Yoon Lee
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Patent number: 7732482Abstract: The present invention relates to novel compounds from Antrodia camphorata and the use thereof.Type: GrantFiled: May 19, 2008Date of Patent: June 8, 2010Assignee: Simpson Biotech Co., Ltd.Inventors: Masao Hattori, Chia-Chin Sheu, Coolin Yang
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Publication number: 20080281074Abstract: The present invention is directed compounds for reversibly modification of biologically active molecules. Described are polyconjugates systems that incorporate targeting, anti-opsonization, anti-aggregation, and transfection activities into small biocompatible in vivo delivery conjugates. The use of reversible modification provides for physiologically responsive activity modulation.Type: ApplicationFiled: June 17, 2008Publication date: November 13, 2008Inventor: David B. Rozema
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Publication number: 20080188669Abstract: The present invention relates to novel mixtures and maleic and succinic acid derivatives from mycelium of Antrodia camphorata and the medical use thereof. The present invention relates to the composition or mycelium comprising the compounds of the invention.Type: ApplicationFiled: April 9, 2008Publication date: August 7, 2008Inventors: Masao Hattori, Chia-Chin Sheu
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Patent number: 6630596Abstract: The invention relates to an adduct of polyalk(en)yl succinic anhydride and a compound of formula (I): wherein R1 is hydrogen, hydroxyl, hydrocarbyl, hydroxyhydrocarbyl, carbamyl, 1-acetyl, amino, or nitro; R2 is hydrogen, hydroxyl, hydrocarbyl, hydroxyhydrocarbyl, carbamyl, 1-acetyl, amino, or nitro; R3 is hydrogen or hydrocarbyl; and X is O, S or NH; or a derivative of such an adduct. The invention also relates to an emulsifier comprising such an adduct or derivative, and the invention also relates to compositions including such an emulsifier.Type: GrantFiled: March 1, 2002Date of Patent: October 7, 2003Assignee: Chemical Services LimitedInventor: Willem George Boer
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Publication number: 20020165264Abstract: Compounds of formula (I) 1Type: ApplicationFiled: January 14, 2002Publication date: November 7, 2002Inventors: Michael E. Kort, Robert J. Gregg, William A. Carroll, Arturo Perez Medrano, Jurgen Dinges, Fatima Z. Basha
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Publication number: 20020147230Abstract: Compounds of formula (I) 1Type: ApplicationFiled: February 7, 2001Publication date: October 10, 2002Inventors: Michael E. Kort, Robert J. Gregg, William A. Carroll, Arturo Perez Medrano, Jurgen Dinges
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Publication number: 20020082431Abstract: The invention relates to a process for the preparation of N-carboxyanhydrides by reaction of the corresponding amino acid with phosgene, diphosgene and/or triphosgene in a solvent medium, characterized in that the reaction is a least partially carried out in the presence of an unsaturated organic compound which has one or more ethylenic double bonds, one of the carbon of at least one ethylenic double bond of which is completely substituted by substituents other than halogen atoms.Type: ApplicationFiled: October 29, 2001Publication date: June 27, 2002Inventors: Fabrice Cornille, Jean-Luc Copier, Jean-Pierre Senet, Yves Robin
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Patent number: 6130257Abstract: The present invention relates to compositions comprising mixtures of two enantiomeric forms of diacyl tartaric anhydride and mixtures obtainable by reacting an organic compound with a mixture comprising two enantiomeric forms of diacyl tartaric anhydride. The invention also relates to a method for the preparation of such enantiomeric mixtures, starting from a mixture comprising D-tartaric acid and L-tartaric acid. The method involves reacting tartaric acid with a fatty acid anhydride under dielectric heating conditions.Type: GrantFiled: November 12, 1997Date of Patent: October 10, 2000Assignee: Quest International B.V.Inventors: Peter Joannes Coenders, Saskia Alexandra Galema, Johannes Durk Gombert, Anna Sophie E ter Meer
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Patent number: 6077962Abstract: This invention relates to the chemical synthesis of N-[N-(3,3-dimethylbutyl)-L-.alpha.-aspartyl]-L-phenylalanine 1-methyl ester using peptide coupling methods. The coupling reaction is conducted by condensation of an activated derivative of novel N-neohexyl-L-aspartic acid with L-phenylalanine or L-phenylalanine methyl ester or by enzymatic coupling of N-neohexyl-L-aspartic acid with L-phenylalanine or L-phenylalanine methyl ester. This invention also relates to novel N-(3,3-dimethylbutyl)-L-aspartic acid, derivatives thereof and the preparation thereof. The activated derivative of N-neohexyl-L-aspartic acid may be an anhydride, mixed anhydride, active ester or an intermediate activated derivative thereof.Type: GrantFiled: December 24, 1998Date of Patent: June 20, 2000Assignee: The NutraSweet CompanyInventors: Indra Prakash, Marie-Christine D. Chapeau
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Patent number: 5696282Abstract: A process comprises contacting, in the presence of a catalyst, hydrogen sulfide or a mercaptan such as, for example, n-dodecyl mercaptan with an .alpha.,.beta.-unsaturated carbonyl or .alpha.,.beta.-unsaturated cyano compound such as, for example, methyl acrylate wherein the catalyst comprises a pyridine derivative such as, for example, 4-(dimethylamino)pyridine or an ion exchange resin such as, for example, "AMBERLYST A-21" to produce a 3-hydrocarbylthio derivative of the .alpha.,.beta.-unsaturated carbonyl or .alpha.,.beta.-unsaturated cyano compound such as, for example, methyl 3-(dodecylthio)propionate.Type: GrantFiled: March 26, 1996Date of Patent: December 9, 1997Assignee: Phillips Petroleum CompanyInventors: James E. Shaw, Harry Porter
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Patent number: 5623079Abstract: The present invention provides an industrial method of producing N-formyl-L-aspartic anhydride from N-formyl-L-aspartic acid, formic acid and acetic anhydride with less residual formic acid than conventional methods.Type: GrantFiled: September 28, 1995Date of Patent: April 22, 1997Assignee: Ajinomoto Co., Inc.Inventors: Takehiko Kataoka, Shinichi Kishimoto, Osahiro Sato
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Patent number: 5580995Abstract: Anhydride-functional polymerizable monomers having the structure: ##STR1## and polymers and reactive compositions prepared from these monomers are disclosed. The reactive compositions are especially useful in primer and clearcoat/basecoat applications.Type: GrantFiled: November 8, 1994Date of Patent: December 3, 1996Assignee: The Sherwin-Williams CompanyInventor: Rubing Cai
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Patent number: 5451687Abstract: An industrial process for producing O,O'-diacyltartaric anhydride with high purity and high efficiency is disclosed. According to the process of the invention, a carboxylic acid of the formula (I):R.sup.1 COOH (I)(wherein R.sup.1 represents C.sub.1 -C.sub.4 alkyl group; phenyl group; or phenyl group substituted with 1-5 C.sub.1 -C.sub.4 alkyl groups or with 1-5 halogen atoms) is reacted with tartaric acid in the presence of a chlorinating agent.Type: GrantFiled: November 29, 1993Date of Patent: September 19, 1995Assignee: Toray Industries, Inc.Inventors: Haruyo Sato, Sakie Nakai, Toshihiro Fujino
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Patent number: 5430162Abstract: The invention provides compounds of formula ##STR1## wherein X, R and R.sup.1 are defined in the specification. These compounds are useful as antibiotic agents.Type: GrantFiled: March 21, 1994Date of Patent: July 4, 1995Assignee: American Cyanamid CompanyInventors: Phaik-Eng Sum, Ving J. Lee, Joseph J. Hlavka, Raymond T. Testa
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Patent number: 5399748Abstract: Arylsulfonamide derivatives of .alpha.-amino dicarboxylic acids such as aspartic acid and glutamic acid posses anti-cholecystokinin activity. They are useful in the treatment of cholecystokinin-related disorders such as anorexia nervosa, pancreatic inflammation, biliary tract disease, Zollinger-Ellison syndrome and various psychiatric disorders, as well as in the potentiation of opiate analgesia, and in the treatment of certain cancers.Type: GrantFiled: January 12, 1993Date of Patent: March 21, 1995Assignee: James Black Foundation LimitedInventors: Howard B. Broughton, Sarkis B. Kalindjian, Caroline M. R. Low, Iain M. McDonald, Robert A. D. Hull, Nigel P. Shankley
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Patent number: 5364945Abstract: Anhydride-functional polymerizable monomers having the structure: ##STR1## and polymers and reactive compositions prepared from these monomers are disclosed. The reactive compositions are especially useful in primer and clearcoat/basecoat applications.Type: GrantFiled: January 3, 1994Date of Patent: November 15, 1994Assignee: The Sherwin-Williams CompanyInventors: Rubing Cai, Thomas W. Yokoyama
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Patent number: 5306809Abstract: This invention relates to the field of immune therapy of cancer, more specifically to immunoconjugates of a cytotoxic moiety with a targeting moiety, more specifically to immunoconjugates of antibodies or fragments or functional derivatives of antibodies coupled to a cytotoxic substance such as drugs, toxins or radioisotopes. It especially relates to the release of substances bound to a targeting moiety through the use of acid-cleavable linker molecules.Type: GrantFiled: December 31, 1991Date of Patent: April 26, 1994Assignee: Akzo N.V.Inventors: Petrus J. Boon, Franciscus M. Kaspersen, Ebo S. Bos
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Patent number: 5292480Abstract: A corrosion inhibitor with excellent film forming and film persistency characteristics may be produced by first reacting C.sub.18 unsaturated fatty acids with maleic anhydride or fumaric acid to produce the fatty acid Diels-Alder adduct or the fatty acid-ene reaction product. This adduct or reaction product is further reacted in a condensation or hydrolysation reaction with a polyalcohol to form an acid-anhydride ester corrosion inhibitor. The ester may be reacted with amines, metal hydroxides, metal oxides, ammonia, and combinations thereof to neutralize the ester. Surfactants may be added to tailor the inhibitor formulation to meet the specific needs of the user (i.e., the corrosion inhibitor may be formulated to produce an oil-soluble, highly water-dispersible corrosion inhibitor or an oil-dispersible, water-soluble corrosion inhibitor). Suitable carrier solvents may be employed where needed to effectively disperse the corrosion inhibitor formulation.Type: GrantFiled: April 12, 1993Date of Patent: March 8, 1994Assignee: Westvaco CorporationInventors: Eugene R. Fischer, John A. Alford, Paul G. Boyd
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Patent number: 5206392Abstract: A process for making acrylmaleic acid and arylmaleic anhydride derivative useful as intermediates for the preparation of arylmaleimides in the synthesis of compounds having activity in the central nervous system. The process involves reacting arylacetonitriles with glyoxylic acid to provide novel intermediate 3-aryl-3-cyanopropeneoates which may be converted to the arylmaleic acid and arylmaleic anhydride derivatives.Type: GrantFiled: April 27, 1992Date of Patent: April 27, 1993Assignee: American Cyanamid CompanyInventor: William D. Dean
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Patent number: 5069818Abstract: Functionalized polyphenylene ether compositions are provided which are particularly useful for effecting compatibility for a blend of polyphenylene ether resin and a polyamide resin. The functionalized-polyphenylene ether is the reaction product of a polyphenylene ether polymer and a compound having the general formula (i)--Z--(ii), wherein group (i) is a polyphenylene ether-philic moiety such as acyl chloride, group (ii) is a polyamide-philic moiety such as dicarboxylic acid anhydride, and Z is a divalent hydrocarbon radical providing a covalent linkage between groups (i) and (ii). An example of the compound having general formula (i)--Z--(ii) is trimellitic anhydride acid chloride.Type: GrantFiled: March 13, 1989Date of Patent: December 3, 1991Assignee: General Electric CompanyInventors: David F. Aycock, Sai-Pei Ting
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Patent number: 5061799Abstract: A multi-step process for the preparation of tetraazaindenes provides new, intermediate compounds and methods for their formation. A first method or step (1) of the process comprises reacting Meldrum's acid (cyclic dimethylmethylene malonate) or a related compound with an orthoester to form a first intermediate. Another method or step (2) of the invention comprises reacting the first intermediate with a triazole to form a second intermediate. A third method or step (3) comprises reacting the second intermediate with a base to form a tetraazaindene salt from which the tetraazaindene can then be formed. Other methods of the invention comprise sequential combinations of the three new methods above described.Type: GrantFiled: June 25, 1990Date of Patent: October 29, 1991Assignee: Eastman Kodak CompanyInventors: David G. Lincoln, Mark J. Robbins
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Patent number: 5003085Abstract: A process is disclosed for preparation of anhydrides containing additional carboxylic acid moieties and dianhydrides of disubstituted maleic anhydride compounds wherein the acid anhydrides and dianhydrides retain their alkene character. The resulting alkene compounds are useful as precursors for polyesters, thermally stable polyamide-imides and polyimides which are also disclosed, as well as a process for their preparation.Type: GrantFiled: January 8, 1990Date of Patent: March 26, 1991Assignee: Amoco CorporationInventors: Steven J. Behrend, David A. Young, Ellis K. Fields
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Patent number: 4996316Abstract: A process for the preparation of tertiary N,N-dimethylamines by the reaction of primary amines, formaldehyde, and hydrogen under pressure and at elevated temperature in the presence of a nickel-containing hydrogenation catalyst in the liquid phase. The hydrogenation catalyst is suspended in a solvent, the nickel concentration is 0.1 to 10% by weight, based on the primary amine. The starting materials are separate from each other, brought to 80.degree. to 150.degree. C. and 1 to 15 MPa and fed into the catalyst suspension simultaneously with stirring and reacted in one step to form the tertiary N,N-dimethylamines.Type: GrantFiled: December 24, 1988Date of Patent: February 26, 1991Assignee: Hoechst AktiengesellschaftInventors: Jurgen Weber, Detlef Kampmann, Claus Kniep
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Patent number: 4965372Abstract: Process and intermediates for isopropyl 3S-amino-4-cyclohexyl-2R-hydroxybutyrate and 3S-amino-2R-hydroxy-5-methylhexanoate from R-malic acid. These products are of known utility in the synthesis of certain renin inhibitors.Type: GrantFiled: June 29, 1989Date of Patent: October 23, 1990Assignee: Pfizer Inc.Inventor: Robert W. Dugger
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Patent number: 4945172Abstract: N-formyl-L-aspartic anhydride is prepared using a minimum excess of formic acid. Acetic anhydride and a C.sub.3 -C.sub.6 secondary alcohol are added to the reaction mixture to consume excess formic acid. The reaction is suitable for further reactions without modification.Type: GrantFiled: November 28, 1989Date of Patent: July 31, 1990Assignee: The Nutra Sweet CompanyInventors: John B. Hill, Hugh L. Dryden, Jr., Robert Erickson
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Patent number: 4931572Abstract: In accordance with the process of this invention, an improved titanium dioxide rutile-based catalyst for molecular oxidation of a hydrocarbon to form the corresponding carboxylic anhydrides is prepared by the steps of (a) forming a catalyst precursor by depositing on titanium dioxide solids in the rutile form a discontinuous monolayer amount of at least one source of a Group IA metal oxide; (b) calcining the thus-formed catalyst precursor under conditions sufficient to convert the Group IA metal oxide source into the corresponding Group IA metal oxide; (c) depositing upon the calcined catalyst precursor a catalytically effective amount of at least one vanadium oxide source which is convertible into vanadium oxide upon heating; and (d) calcining the vanadium-deposited solids under conditions sufficient to convert the vanadium compound into vanadium oxide.Type: GrantFiled: May 17, 1989Date of Patent: June 5, 1990Assignee: Exxon Chemical Patents Inc.Inventors: Ramzi Y. Saleh, Israel E. Wachs
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Patent number: 4877887Abstract: The invention relates to novel alkoxy substituted maleimides of the formula ##STR1## where R.sup.1 is hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.2 -C.sub.8 -alkenyl, phenyl or phenylalkyl, and the organic radicals may furthermore carry inert substituents, and R.sup.2 and R.sup.3 are each C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -alkenyl, C.sub.1 -C.sub.4 -haloalkyl or C.sub.2 -C.sub.4 -haloalkenyl, and alkoxy-substituted maleic anhydrides of the formula II ##STR2## where R.sup.2 is C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -alkenyl, C.sub.1 -C.sub.4 -haloalkyl or C.sub.2 -C.sub.4 -haloalkenyl and Z is hydrogen, halogen or a radical OR.sup.3, where R.sup.3 is C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -alkenyl, C.sub.1 -C.sub.4 -haloalkyl or C.sub.2 -C.sub.4 -haloalkenyl.The invention further relates to processes for preparing such maleimides I and the corresponding maleic anhydrides II and their use as graft monomers in graft polymers based on polyphenylene ethers.Type: GrantFiled: May 2, 1988Date of Patent: October 31, 1989Assignee: BASF AktiengesellschaftInventors: Rainer Becker, Wolfgang Rohr
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Patent number: 4864036Abstract: In accordance with the process of this invention, an improved catalyst for molecular oxidation of a hydrocarbon to form the corresponding carboxylic anhydrides is prepared by the steps of (a) forming a catalyst precursor by depositing on titanium dioxide solids in the anatase form a discontinuous monolayer amount of at least one source of a Group VIB metal oxide; (b) calcining the thus-formed catalyst precursor under conditions sufficient to convert the Group VIB metal oxide source into the corresponding group VIB metal oxide; (c) depositing upon amount of at least one vanadium oxide source which is calcining the vanadium-deposited solids under conditions sufficient to convert the vanadium compound into vanadium oxide.Type: GrantFiled: June 30, 1988Date of Patent: September 5, 1989Assignee: Exxon research & Engineering CompanyInventors: Ramzi Y. Saleh, Isreal E. Wachs
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Patent number: 4855457Abstract: In accordance with the process of this invention, an improved catalyst for molecular oxidation of a hydrocarbon to form the corresponding carboxylic anhydrides is prepared by the steps of (a) forming a catalyst precursor by depositing on titanium dioxide solids in the anatase form at least a monolayer amount of at least one vanadium oxide source which is convertible to vanadium oxide upon calcining; (b) calcining the thus-formed catalyst precursor under conditions sufficient to convert the tantalum oxide source into the oxide form; (c) depositing upon the calcined catalyst precursor a catalytically effective amount of at least one vanadium oxide source which is convertible into vanadium oxide upon heating and at least one metal oxide source selected from the group consisting of oxides of Sb, Ga, Ge, In, T.sub.1, Pb, Se, Te, P and Bi, which is convertible into the corresponding metal oxide upon heating and which is reactive with V.sub.2 O.sub.Type: GrantFiled: December 21, 1987Date of Patent: August 8, 1989Assignee: Exxon Research & Engineering CompanyInventors: Saleh Y. Ramzi, Israel E. Wachs
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Patent number: 4824915Abstract: Functionalized polyphenylene ether compositions are provided which are particularly useful for effecting compatibility for a blend of polyphenylene ether resin and a polyamide resin. The functionalized-polyphenylene ether is the reaction product of a polyphenylene ether polymer and a compound having the general formula (i)--Z--(ii), wherein group (i) is a polyphenylene ether-philic moiety such as acyl chloride, group (ii) is a polyamide-philic moiety such as dicarboxylic acid anhydride, and Z is a divalent hydrocarbon radical providing a covalent linkage between groups (i) and (ii). An example of the compound having general formula (i)--Z--(ii) is trimellitic anhydride acid chloride.Type: GrantFiled: September 26, 1985Date of Patent: April 25, 1989Assignee: General Electric CompanyInventors: David F. Aycock, Sai-Pei Ting
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Patent number: 4670568Abstract: A process for producing N-formylaspartic anhydride, which comprises, grinding solid aspartic acid into fine particles; and then reacting said finely ground aspartic acid with formic acid and acetic anhydride.Type: GrantFiled: October 29, 1985Date of Patent: June 2, 1987Assignee: Ajinomoto Co., Inc.Inventors: Masao Nakamura, Hideo Takeda, Toshihide Yukawa, Haruo Kawasaki
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Patent number: 4642358Abstract: Acyl modified polyphenylene ether compositions are provided by combining or reacting a polyphenylene ether polymer and a compound which contains both (i) at least one acyl functional group and (ii) at least one group capable of reacting or associating with a polyamide resin, an example of a compound containing both group (i) and group (ii) is trimellitic anhydride acid chloride.Type: GrantFiled: October 23, 1984Date of Patent: February 10, 1987Assignee: General Electric CompanyInventors: David F. Aycock, Sai-Pei Ting
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Patent number: 4596867Abstract: Di-substituted maleic anhydride compounds are disclosed of the structural formula ##STR1## wherein R and R.sup.1 are selected from the group consisting of aliphatic and phenyl moieties, and R.sup.2 is a divalent aromatic moiety. Polyamide-imide polymers, polyimide polymers and vinyl copolymers derived therefrom are also disclosed.Type: GrantFiled: July 12, 1984Date of Patent: June 24, 1986Assignee: Standard Oil Company (Indiana)Inventors: Ellis K. Fields, Mark L. Winzenburg, Steven J. Behrend
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Patent number: 4582912Abstract: In accordance with the process of this invention, an improved catalyst for molecular oxidation of a hydrocarbon to form the corresponding carboxylic anhydrides is prepared by the steps of (a) forming a catalyst precursor by depositing on titanium dioxide solids in the anatase form at least a monolayer amount of at least one source of vanadium oxide, (b) calcining the thus-formed catalyst precursor under conditions sufficient to convert the vanadium oxide source into the oxide form, (c) depositing upon the calcined catalyst precursor a catalytically effective amount of at least one vanadium oxide source which is convertible into vanadium oxide upon heating and at least one metal oxide source selected from the group consisting of oxides of Sb, Ga, Ge, In, Tl, Pb, Se, Te, P and Bi, which is convertible into the corresponding metal oxide upon heating and which is reactive with V.sub.2 O.sub.Type: GrantFiled: October 1, 1984Date of Patent: April 15, 1986Assignee: Exxon Research & Engineering Co.Inventors: Ramzi Y. Saleh, Israel E. Wachs
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Patent number: 4560761Abstract: Quaternary ammonium compounds containing an anhydride groups are prepared by halogenating dimethylmaleic anhydride and reacting the halogenated product with a tertiary amine. The products are useful as surfactants, biocides and as cosurfactants in enhanced oil recovery.Type: GrantFiled: April 30, 1984Date of Patent: December 24, 1985Assignee: Standard Oil Company (Indiana)Inventors: Ellis K. Fields, Mark L. Winzenburg
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Patent number: 4550180Abstract: In a method for the manufacture of N-formylaspartic acid anhydride which comprises reacting a mixture of aspartic acid, formic acid and acetic anhydride in the presence of an entraining organic solvent, the improvement comprising adding to the mixture, prior to or during the course of reaction, an oxide, hydroxide, or a salt of a metal. The above compound is used as an intermediate in the manufacture of alpha-L-aspartyl-L-phenylalanine methyl ester which is a sweetening agent.Type: GrantFiled: March 15, 1984Date of Patent: October 29, 1985Assignee: Ajinomoto Co., Inc.Inventors: Tadashi Takemoto, Toyoto Hijiya, Tetsuo Yamatani
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Patent number: 4526985Abstract: A process for the preparation of the anhydride of N-formyl-L-aspartic acid by reacting L-aspartic acid with nearly stoichiometric amounts of formic acid and acetic anhydride, under controlled conditions of temperature, reaction and addition times. The product is a known intermediate in the synthesis of .alpha.-L-aspartyl-L-phenylalanine methyl ester, a known sweetening agent.Type: GrantFiled: July 18, 1983Date of Patent: July 2, 1985Assignee: Pierrel S.p.A.Inventors: Vincenzo Giobbio, Giorgio Ornato, Livio Buracchi, Alberto Mangia
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Patent number: 4526986Abstract: Quaternary ammonium compounds containing anhydride groups are prepared by halogenating dimethylmaleic anhydride and reacting the halogenated product with a tertiary amine. The products are useful as surfactants, biocides and as cosurfactants in enhanced oil recovery.Type: GrantFiled: April 13, 1983Date of Patent: July 2, 1985Assignee: Standard Oil Company (Indiana)Inventors: Ellis K. Fields, Mark L. Winzenburg
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Patent number: 4517371Abstract: A vanadium, phosphorus oxygen containing catalyst composition capable of partially oxidizing hydrocarbons (e.g., n-butane) to form a carboxylic anhydride (e.g., maleic anhydride), a process for preparing this catalyst, and a process for using this catalyst to form such anhydrides is disclosed. The catalyst composition is prepared by an organic heterogenous technique followed by a water treatment step and activation.Type: GrantFiled: May 9, 1983Date of Patent: May 14, 1985Assignee: Exxon Research & Engineering Co.Inventors: Tai-Cheng Yang, Krishna K. Rao, I-Der Huang
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Patent number: 4508912Abstract: A process for producing a high yield of N-carbobenzoxy-L-aspartic anhydride from N-carbobenzoxy-L-aspartic acid in a very short period using commercially acceptable reaction conditions is disclosed. The process is characterized by reacting N-carbobenzoxy-L-aspartic acid with acetic anhydride in the presence of a metal oxide, a metal hydroxide, a metal salt of acid, an organobasic compound or an acid having a dissociation constant of 5.times.10.sup.-2 or more.Type: GrantFiled: March 29, 1983Date of Patent: April 2, 1985Assignee: Ajinomoto Company, IncorporatedInventors: Tetsuo Yamatani, Toyoto Hijiya, Hideo Takeda, Koji Shibuya, Kiichiro Tanaka
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Patent number: RE33820Abstract: The invention relates to novel alkoxy substituted maleimides of the formula ##STR1## where R.sup.1 is hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.2 -C.sub.8 -alkenyl, phenyl or phenylalkyl, and the organic radicals may furthermore carry inert substituents, and R.sup.2 and R.sup.3 are each C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -alkenyl, C.sub.1 -C.sub.4 -haloalkyl or C.sub.2 -C.sub.4 -haloalkenyl, and alkoxy-substituted maleic anhydrides of the formula II ##STR2## where R.sup.2 is C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -alkenyl, C.sub.1 -C.sub.4 -haloalkyl or C.sub.2 -C.sub.4 -haloalkenyl and Z is hydrogen, halogen or a radical OR.sup.3, where R.sup.3 is C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -alkenyl, C.sub.1 -C.sub.4 -haloalkyl or C.sub.2 -C.sub.4 -haloalkenyl.The invention further relates to processes for preparing such maleimides I and the corresponding maleic anhydrides II and their use as graft monomers in graft polymers based on polyphenylene ethers.Type: GrantFiled: October 4, 1990Date of Patent: February 11, 1992Assignee: BASF AktiengesellschaftInventors: Rainer Becker, Wolfgang Rohr