The Phosphorus And Nitrogen Are Members Of The Same Ring Patents (Class 564/13)
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Patent number: 6919322Abstract: Novel FBPase inhibitors of the formula I are useful in the treatment of diabetes and other conditions associated with elevated blood glucose.Type: GrantFiled: March 7, 2001Date of Patent: July 19, 2005Assignee: Metabasis Therapeutics, Inc.Inventors: Brett C. Bookser, Qun Dang, K. Raja Reddy
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Patent number: 6900352Abstract: A novel class of chiral phosphine ligands useful for producing catalyst for asymmetric reactions with general structure of Formula 1:Type: GrantFiled: February 25, 2003Date of Patent: May 31, 2005Assignee: Advanced SynTech, LLCInventors: Zeng Fu Wang, Kexin Yang, Boliang Lou
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Publication number: 20040171856Abstract: A diazaphosphacycle may be synthesized by reacting a phosphine with a diimine and optionally one or more equivalents of an acid halide, a sulfonyl halide, a phosphoryl halide, or an acid anhydride in the substantial absence of O2 to form the diazaphosphacycle. The phosphine has the formula R1—PH2 where R1 is a substituted or unsubstituted aryl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted cycloalkyl group, or a substituted or unsubstituted ferrocenyl group.Type: ApplicationFiled: February 26, 2004Publication date: September 2, 2004Applicant: Wisconsin Alumni Research FoundationInventors: Clark R. Landis, Wiechang Jin, Jonathan S. Owen, Thomas P. Clark
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Patent number: 6717011Abstract: The application relates to diazaphospholidine compounds of Formula 1 and Formula 2: where: A and B are independently selected from C(R22R23) and C(R22R23)C(R24R25); R1, R2, R3, R4, R18, R19, R20, R21, R22, R23, R24 and R25 each may not be present and each may be independently selected from H, halide —OH, —SO2R26 (where R26 is selected from a group as defined for R22, R23, R24 and R25), —SH, —NO2, —NH2, ═O, ═S, straight chain, branched chain, cyclic, saturated, non-saturated, substituted or non-substituted alkyl, hydroalkyl, carboalkyl, alkoxy, amino, alkenyl, aryl and —CH2 Ar (where Ar is aryl or substituted aryl), preferably containing 1 to 6 carbons, or a silane containing 1 to 6 silicon atoms, wherein, where an R1, R2, R3, R4, R18, R19, R20, R21, R22, R23, R24 and/or R25 group is not present an unsaturated bond is formed; R5 and R17 are selected from H, —NH2, —OH, halide or a substituted or non-substituted straiType: GrantFiled: December 12, 2001Date of Patent: April 6, 2004Assignee: Stylacats LimitedInventors: Martin Wills, Simon William Breeden
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Publication number: 20030220515Abstract: This invention has an object of providing a flame retardant which advantageously has a high melting point and a low volatility and is unlikely to depress the inherent properties of resins. The flame retardant of the invention is a phosphazene compound crosslinked with a crosslinking group such as phenylene group, each of the crosslinking groups being interposed between the two oxygen groups left after the elimination of phenyl groups from the phosphazene compound, the amount of the phenyl groups in the crosslinked compound being 50 to 99.9% based on the total number of the phenyl groups in the phosphazene compound. The invention also provides a resin composition containing the flame retardant, and a molded article of the resin.Type: ApplicationFiled: May 21, 2003Publication date: November 27, 2003Applicant: OTSUKA CHEMICAL CO., LTD.Inventors: Nakacho Yoshifumi, Yabuhara Tadao, Tada Yuji, Nishioka Yoichi
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Publication number: 20030176738Abstract: Cyclic phosphazene compounds of formula (I): 1Type: ApplicationFiled: February 14, 2003Publication date: September 18, 2003Applicant: Solvay SolexisInventors: Antonio Russo, Patrizia Maccone, Claudio Tonelli
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Patent number: 6613922Abstract: Chiral di-phosphonites and phosphhours diamides based on the ps-ortho disubstituted p-cyclophane skeleton are good ligands for transition metals, notably rhodium, iridium and ruthenium. Preferably, the transition metals are linked to the ligands by a diene compound chosen from 2,5-Norbornadiene (NBD) and 1,5-Cyclooctadiene (COD).Type: GrantFiled: January 22, 2002Date of Patent: September 2, 2003Assignee: Chirotech Technology LimitedInventors: Antonio Zanotti-Gerosa, Christophe Guillaume Malan, Julian Henschke, Daniela Herzberg
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Patent number: 6605742Abstract: Novel cyclo azaphospha hydrocarbons according to formula I are provided. The compounds are useful as metalloprotease inhibitors.Type: GrantFiled: April 11, 2002Date of Patent: August 12, 2003Assignee: LEO Pharma A/SInventors: Thomas Høyer, Morten Dahl Sørensen
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Patent number: 6596893Abstract: This invention has an object of providing a flame retardant which advantageously has a high melting point and a low volatility and is unlikely to depress the inherent properties of resins. The flame retardant of the invention is a phosphazene compound crosslinked with a crosslinking group such as phenylene group, each of the crosslinking groups being interposed between the two oxygen groups left after the elimination of phenyl groups from the phosphazene compound, the amount of the phenyl groups in the crosslinked compound being 50 to 99.9% based on the total number of the phenyl groups in the phosphazene compound. The invention also provides a resin composition containing the flame retardant, and a molded article of the resin.Type: GrantFiled: August 12, 1999Date of Patent: July 22, 2003Assignee: Otsuka Chemical Co., Ltd.Inventors: Yoshifumi Nakacho, Tadao Yabuhara, Yuji Tada, Yoichi Nishioka
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Publication number: 20030092802Abstract: This invention has an object of providing a flame retardant which advantageously has a high melting point and a low volatility and is unlikely to depress the inherent properties of resins. The flame retardant of the invention is a phosphazene compound crosslinked with a crosslinking group such as phenylene group, each of the crosslinking groups being interposed between the two oxygen groups left after the elimination of phenyl groups from the phosphazene compound, the amount of the phenyl groups in the crosslinked compound being 50 to 99.9% based on the total number of the phenyl groups in the phosphazene compound. The invention also provides a resin composition containing the flame retardant, and a molded article of the resin.Type: ApplicationFiled: August 12, 1999Publication date: May 15, 2003Inventors: YOSHIFUMI NAKACHO, TADAO YABUHARA, YUJI TADA, YOICHI NISHIOKA
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Publication number: 20030055254Abstract: A diazaphosphacycle may be synthesized by reacting a phosphine with a diimine and optionally one or more equivalents of an acid halide, a sulfonyl halide, a phosphoryl halide, or an acid anhydride in the substantial absence of O2 to form the diazaphosphacycle. The phosphine has the formula R1-PH2 where R1 is a substituted or unsubstituted aryl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted cycloalkyl group, or a substituted or unsubstituted ferrocenyl group.Type: ApplicationFiled: July 23, 2001Publication date: March 20, 2003Inventors: Clark R. Landis, Wiechang Jin, Jonathan S. Owen, Thomas P. Clark
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Publication number: 20020177706Abstract: Novel cyclo azaphospha hydrocarbons according to formula I 1Type: ApplicationFiled: April 11, 2002Publication date: November 28, 2002Inventors: Thomas Hoyer, Morten Dahl Sorensen
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Publication number: 20020173607Abstract: Anionic polymerization initiators useful in the preparation of polymers having a protected amine functional group. The amine functionality is part of a heterocyclic radical and includes a protecting group.Type: ApplicationFiled: March 6, 2001Publication date: November 21, 2002Applicant: FMC CorporationInventor: Thorsten Werner Brockmann
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Publication number: 20020151735Abstract: A compound of the following formula: 1Type: ApplicationFiled: January 22, 2002Publication date: October 17, 2002Inventors: Antonio Zanotti-Gerosa, Christophe Guillaume Malan, Julian Henschke, Daniela Herzberg
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Publication number: 20020065434Abstract: Bidentate phosphine ligands of the formula 1Type: ApplicationFiled: November 13, 2001Publication date: May 30, 2002Inventors: Holger Geissler, Petrus W.N.M. van Leeuwen, Paul C. J. Kamer, Lars A. van der Veen
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Patent number: 5919968Abstract: A process for preparing an organic pentavalent phosphorus compound comprising oxidizing an organic trivalent phosphorus compound with an aqueous hydrogen peroxide solution in the presence of an inorganic or organic base at a temperature of 0.degree. C. to 50.degree. C. to obtain the corresponding organic pentavalent phosphorus compound.Type: GrantFiled: November 10, 1997Date of Patent: July 6, 1999Assignee: Daihachi Chemical Industry Co., Ltd.Inventors: Kozo Kitamura, Tsuyoshi Kihara, Yoshinori Tanaka, Yoshimi Yano
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Patent number: 5698737Abstract: A method is disclosed for deprotonating a compound comprising treating the compound with a base of the general formula: ##STR1## in the presence of a nitrile solvent; wherein R.sup.1, R.sup.2 and R.sup.3 are each individually H, (C.sub.1 -C.sub.15)alkyl, (C.sub.6 -C.sub.9)aryl, (C.sub.1 -C.sub.4)alkyl(C.sub.6 -C.sub.9)aryl, ((C.sub.1 -C.sub.4)alkyl).sub.3 Si, or (C.sub.6 -C.sub.9)aryl(C.sub.1 -C.sub.4)alkyl.Type: GrantFiled: June 7, 1995Date of Patent: December 16, 1997Assignee: Iowa State University Research FoundationInventors: John G. Verkade, Thyagarajan Mohan, Andrzej E. Wroblewski
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Patent number: 5652207Abstract: Novel bleaches, a method for bleaching substrates using these materials and detergent compositions containing same are reported. The bleaches are phosphinoyl imines. Substrates such as fabrics may be bleached in an aqueous solution containing the phosphinoyl imines and a peroxygen compound.Type: GrantFiled: August 12, 1996Date of Patent: July 29, 1997Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventor: Naresh Dhirajlal Ghatlia
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Patent number: 5610294Abstract: This invention relates to substituted cyclic carbonyls and derivatives thereof useful as retroviral protease inhibitors, to pharmaceutical compositions comprising such compounds, and to methods of using these compounds for treating viral infection. A representative compound of the invention is the compound of formula: ##STR1## wherein R.sup.22 and R.sup.23 are allyl.Type: GrantFiled: February 16, 1994Date of Patent: March 11, 1997Assignee: The Du Pont Merck Pharmaceutical CompanyInventors: Patrick Y. Lam, Prabhakar K. Jadhav, Charles J. Eyermann, Carl N. Hodge, George V. De Lucca, James D. Rodgers
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Patent number: 5602278Abstract: This invention relates to compounds which are N-oxides and derivatives of chlorambucil and which, under certain conditions, (1) are stable in hypoxic and oxic cells, (2) are toxic in cells having varying degrees of hypoxia, and (3) show little toxicity to oxic cells. These compounds have the general formula set out below and are used to treat tumorous cells: ##STR1## wherein R is an alkyl, aryl, or derivatives thereof, such as CH.sub.3 OCH.sub.2 CH.sub.2 --; CH.sub.3 CH.sub.2 OCH.sub.2 CH.sub.2 --; C.sub.6 H.sub.5 OCH.sub.2 CH.sub.2 --; C.sub.6 H.sub.5 CH.sub.2 --; CH.sub.3 (CH.sub.2).sub.3 OCH.sub.2 CH.sub.Type: GrantFiled: October 20, 1994Date of Patent: February 11, 1997Inventor: Lynn Kirkpatrick
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Patent number: 5534646Abstract: Substituted 1,3,2,4-diazadiphosphetidines of formula I ##STR1## where preferably, R.sub.1 and R.sub.2 are branched alkyl or aryl, m and n are 1, p and q are 0, and YR.sub.3 and XR.sub.4 are substituted --O--phenyl or --N(alkyl).sub.2, are excellent stabilizers for organic materials, particularly polyolefins.Type: GrantFiled: August 31, 1994Date of Patent: July 9, 1996Assignee: Ciba-Geigy CorporationInventor: Sai P. Shum
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Patent number: 5367084Abstract: A process for preparation of new or previously known pyrrol derivatives is provided. The process involves reacting a nitroalkane or a nitroalkene with an isocyanoacetate in the presence of a proprophosphatrane "super base" to prepare the pyrrol compounds. Through production of new pyrrol compounds, new pyrrol derivatives such as dipyrromethane and porphyrin may be synthesized. In addition, the high yields of pyrrol compounds produced according to the method of the invention provide for more efficient production of previously known dipyrromethane and porphyrin compounds. The invention further provides a mild, high yield process for de-esterification of esterified pyrrol and dipyrromethane compounds. The invention also provides a synthetic method for the production of high yields of oxazoles through reaction of an aryl halide or acid anhydride with an isocyanoacetate in the presence of a prophosphatrane "super base".Type: GrantFiled: October 26, 1993Date of Patent: November 22, 1994Assignee: Iowa State University Research Foundation, Inc.Inventors: John Verkade, Jiansheng Tang
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Patent number: 5352829Abstract: Energetic nitramine containing cyclotriphosphazene which include 1,1,3,3,-tris-spiro(N,N'-dinitroethylenediamino)cyclotriphosphazene, 1,1-spiro(ethylenediamino)-3,3,5,5-bis-spiro(N,N'-dinitroethylenediamino)c yclotriphosphazene, 1,1,3,3-bis-spiro(N,N'-dinitroethylenediamino)-5,5-dichlorocyclotriphospha zene, 1,1,3,3-bis-spiro(N,N'-dinitroethylenediamino)-5,5-difluorocyclotriphospha zene, 1,1-spiro(N,N'-dinitroethylenediamino)-3,3,5,5-bis-spiro(ethylenediamino)c yclotriphosphazene, 1,1-spiro(ethylenediamino)-3,3-spiro(N,N'-dinitroethylenediamino)-5,5-dich lorocyclotriphosphazene, 1,1-spiro(ethylenediamino)-3,3-spiro(N,N'-dinitroethylenediamino)-5,5-difl uorocyclotriphosphazene, 1,1-spiro(N,N'-dinitroethylenediamino)-3,3,5,5-tetrachlorocyclotriphosphaz ene, and 1,1-spiro(N,N'-dinitroethylenediamino)-3,3,5,5-tetrafluorocyclotriphosphaz ene, which can be used in explosive compositions.Type: GrantFiled: April 2, 1993Date of Patent: October 4, 1994Assignee: The United States of America as represented by the Secretary of the NavyInventors: Paritosh R. Dave, Farhad Forohar, Michael Chaykovsky, Clifford D. Bedford
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Patent number: 5326910Abstract: Hydrolytically and thermooxidatively stable monophospha-s-triazines prepared by reaction of octafluoroisobutylene epoxide with an acid fluoride followed by transformation of the resultant product into an amide, then into a nitrile, reacting the nitrile with ammonia and reacting the imidoylamidine resulting from the previous steps with di-aryltrihalophosphorane to produce mono-phospha-s-triazines that are useful as antioxidant - anticorrosion agents for perfluoroalkylether fluids are disclosed.Type: GrantFiled: March 1, 1993Date of Patent: July 5, 1994Assignee: Lubricating Specialties Co.Inventors: Kazimiera J. L. Paciorek, Steven R. Masuda, Wen-Huey Lin
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Patent number: 5298651Abstract: A process for preparing isocyanates comprising (a) contacting carbon dioxide and a primary amine in the presence of an aprotic organic solvent and a phosphazene compound or a mixture of a phosphazene compound and an organic, nitrogenous base selected from the group consisting of guanidine compounds, amidine compounds, tertiary amines, pyridine and mixtures thereof to produce the corresponding ammonium carbamate salt, and (b) reacting the ammonium carbamate salt with an electrophilic or oxophilic dehydrating agent to produce the corresponding isocyanate. A second embodiment comprises recovering the ammonium carbamate salt of step (a) prior to reacting the ammonium carbamate salt with an electrophilic or oxophilic dehydrating agent in the presence of an aprotic organic solvent and a phosphazene compound or a mixture of a phosphazene compound and an organic, nitrogenous base selected from the group consisting of guanidine compounds, amidine compounds, tertiary amines, pyridine and mixtures thereof.Type: GrantFiled: October 15, 1992Date of Patent: March 29, 1994Assignee: Monsanto CompanyInventors: William D. McGhee, Thomas E. Waldman
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Patent number: 5174923Abstract: The present invention provides an antistatic composition comprising a binder, a cyclic phosphazene, and a salt that complexes with the cyclic phosphazene. The cyclic phosphazene has the general formula ##STR1## wherein x is 3 or 4.Type: GrantFiled: August 27, 1990Date of Patent: December 29, 1992Assignee: Eastman Kodak CompanyInventors: Janglin Chen, Wayne T. Ferrar, Hans R. Grashof, Akemi S. Marshall
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Patent number: 5105001Abstract: Novel substituted phosphazene compounds are disclosed having the formula ##STR1## wherein w, x, y and z are integers the sum of which is from 3 to 6 with the proviso that w is at least 1 but equal to or less than (w+x+y+z)-1, x is from 1 to 5, y and z are from 0 to 2;R.sub.1 and R.sub.2 are the same or different and are C.sub.1 to C.sub.6 linear or branched alkyl;R.sub.3 is an unsubstituted or substituted aryl and n is 0 or an integer from 2 to 6; Q is --O--, ##STR2## --NR-- or --S--; Ar is ##STR3## R' and R" are the same or different and are C.sub.1 to C.sub.6 linear or branched alkyl, with the proviso that R" can also be hydrogen, wherein R.sub.1 and R.sub.2 are the same or different C.sub.1 to C.sub.4 linear or branched alkyl group and n is 0 or an integer from 2 to 6. These compounds display good solubilities in both organic and aqueous systems. Accordingly, they act as antioxidants in adhesive, sealant and coating compositions.Type: GrantFiled: September 18, 1990Date of Patent: April 14, 1992Assignee: Ethyl CorporationInventors: Dixie E. Goins, Hsueh M. Li
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Patent number: 5068425Abstract: Phosphinamides are prepared by the action of an organic halide on an oxazaphospholidine. Depending upon the configuration desired for the stereoisomer to be obtained, an oxazaphospholidine is utilized which has been derived from a (+) or (-) optically-active amino-alcohol. These phosphinamides are useful for the preparation of phosphinates, in particular optically-active phosphinates of known absolute configuration; for this, the phosphinamide is subjected to alcoholysis.Type: GrantFiled: October 17, 1990Date of Patent: November 26, 1991Assignee: Societe Nationale Elf AquitaineInventor: Sylvain Juge
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Patent number: 5063252Abstract: The present invention is directed to a process for the production of polyurethanes using catalysts based on triamino(imino)phosphoranes corresponding to formulas I, II or III ##STR1## wherein R, R', R" and R"' represent hydrocarbon substituents andn and m may be the same or different and represent 0, 1 or 2.The present invention also relates to certain of the triamino(imino)phosphoranes used as catalysts.Type: GrantFiled: November 7, 1989Date of Patent: November 5, 1991Assignee: Bayer AktiengesellschaftInventors: Andreas Ruckes, Martin Brock, Richard Weider
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Patent number: 5051533Abstract: Prophosphatrane compounds of the formula ##STR1## are disclosed. These compounds are strong Lewis bases and are useful as proton abstracting reagents.Type: GrantFiled: April 18, 1990Date of Patent: September 24, 1991Assignee: Iowa State University Research Foundation, Inc.Inventor: John G. Verkade
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Patent number: 4971897Abstract: The present invention provides an antistatic composition comprising a binder, a cyclic phosphazene, and a salt that complexes with the cyclic phosphazene. The cyclic phosphazene has the general formula ##STR1## wherein x is 3 or 4.Type: GrantFiled: February 3, 1989Date of Patent: November 20, 1990Assignee: Eastman Kodak CompanyInventors: Janglin Chen, Wayne T. Ferrar, Hans R. Grashof, Akemi S. Marshall
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Patent number: 4952728Abstract: New chemical product, constituted by an organic phosphorus compound of the structure ##STR1## where Q is an N or O atom, T is an alkylene or arylene, possibly carrying substituents, or not existing, while R.sup.1 to R.sup.7, the same or different, are H or aliphatic, cycloaliphatic and/or arylic hydrocarbon radicals, possibly substituted, R.sup.3 not existing when Q is oxygen.This product is used as an intermediate in the preparation of different derivatives of phosphinous acid.Type: GrantFiled: August 26, 1987Date of Patent: August 28, 1990Assignee: Societe Nationale Elf AquitaineInventors: Sylvain Juge, Jean-Pierre Genet
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Patent number: 4900866Abstract: The invention relates to azaphospholenes of the type ##STR1## wherein R.sub.1 and R.sub.2 may be alkyl, aryl and aralkyl groups, processes for preparing same and the use thereof.Type: GrantFiled: September 19, 1988Date of Patent: February 13, 1990Assignee: Studiengesellschaft Kohle mbHInventors: Gunther Wilke, Jaroslaw Monkiewicz, Herbert Kuhn
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Patent number: 4855389Abstract: This invention relates to a process for producing phosphonitrile oligomers containing maleimido phenoxy groups.Type: GrantFiled: August 28, 1987Date of Patent: August 8, 1989Assignee: Shin Nisso Kako Co., Ltd.Inventors: Shinichiro Ueyama, Masayuki Furukawa, Tadaichi Nishikawa
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Patent number: 4804655Abstract: Novel pesticidally active cyclic malonylphosphonic diamides of the formula ##STR1## in which X.sup. represents O or S,R.sup.1 represents alkyl, alkenyl, alkinyl, cycloalkyl, aryl or heteroaryl, each of which can be optionally substituted,R.sup.2 represents hydrogen, alkyl, aryl or aralkyl,R.sup.3 represents hydrogen, alkyl, aryl or aralkyl, andR.sup.Type: GrantFiled: December 22, 1986Date of Patent: February 14, 1989Assignee: Bayer AktiengesellschaftInventors: Nikolaus Muller, Gerhard Bonse, Peter Andrews, Wilhelm Stendel, Robert Steffens
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Patent number: 4776875Abstract: Compounds of the formula ##STR1## in which R.sub.1 and R.sub.2 denote alkyl, OH, CF.sub.3 or cyanoethyl, A preferably denotes --COOH, R.sub.3 denotes inter alia alkoxycarbonylalkoxy, fairly high-molecular (>C.sub.12) alkoxy, alkylcarbonylalkoxy or nitrobenzyloxy, are valuable herbicides and growth regulators.Type: GrantFiled: March 26, 1986Date of Patent: October 11, 1988Assignee: Hoechst AktiengesellschaftInventors: Heinz J. Loher, Klaus Bauer, Hermann Bieringer
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Patent number: 4748263Abstract: 4-Aminophenoxy cyclotriphosphazenes are reacted with maleic anhydride to produce maleamic acids which are converted to the maleimides. The maleimides are polymerized. By selection of starting materials (e.g. hexakis amino or trisaminophenoxy-trisphenoxy-cyclotriphosphazenes), selection of molar proportions of reactants, use of mixtures of anhydrides and use of dianhydrides as bridging groups a variety of maleimides and polymers are produced. The polymers have high limiting oxygen indices, high char yields and other useful heat and fire resistant properties making them useful as, for example, impregnants of fabrics.Type: GrantFiled: October 29, 1986Date of Patent: May 31, 1988Assignee: The United States of America as represented by the administrator of the National Aeronautics and Space AdministrationInventors: Devendra Kumar, George M. Fohlen, John A. Parker
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Patent number: 4636387Abstract: A long-acting, local anesthetic, comprising a polymeric phosphazene backbone, and certain radicals having local anesthetic activity and an amino functional group on the ring of said radical through which said radical is covalently attached to the phosphazene backbone by a phosphorous-nitrogen single bond is disclosed along with medicaments containing such anesthetics. The radicals employed are 2-amino-4-picoline, benoxinate, naepaine and phenacaine.Type: GrantFiled: September 21, 1984Date of Patent: January 13, 1987Assignee: Research CorporationInventors: Harry R. Allcock, Paul E. Austin, Thomas X. Neenan
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Patent number: 4587362Abstract: A process is provided for the preparation of diaryl methylphosphonates through the reaction of triaryl phosphites with methanol in the presence of a catalytic quantity of methyl iodide. The reaction is conducted at a temperature of from about 170.degree. C. to about 250.degree. C. New and useful derivatives are produced by reaction of the diaryl methylphosphonates with polyols or amines.Type: GrantFiled: March 5, 1984Date of Patent: May 6, 1986Assignee: Stauffer Chemical CompanyInventors: Milton L. Honig, Edward D. Weil
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Patent number: 4582932Abstract: Highly fire resistant composites or laminates particularly applicable as structural components in aircraft, e.g. in the engine nacelle, as part of the acoustic panel-fire wall structure, and capable of withstanding a 2,000.degree. F. flame temperature, comprising incorporating an additive in the form of a polymeric phosphorylated amide, into a resin, e.g., a polyimide or an epoxy resin, such additive being soluble in the resin. The resulting resin containing the additive is then applied to or impregnated into a substrate such as glass fiber cloth or graphite fiber, to form a composite structure which is then cured. The resulting cured composite when subjected to high temperatures of the order of, e.g., a 2,000.degree. F. flame temperature, forms a resin char of reduced thermal conductivity which holds the fibers of the laminate together and maintains the structural stability and integrity of the laminate.Type: GrantFiled: May 27, 1983Date of Patent: April 15, 1986Assignee: McDonnell Douglas CorporationInventors: Norman R. Byrd, Daniel C. Peek
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Patent number: 4559175Abstract: This invention concerns itself with a novel class of dihalodiphospha-s-triazines as exemplified by the compound 1,3-bis[phenylchloro-phospha]-5-perfluoro-n-heptyl-2,4,6-triazines as well as their thio and azido substituted derivatives.Type: GrantFiled: April 19, 1984Date of Patent: December 17, 1985Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Kazimiera J. L. Paciorek, Reinhold H. Kratzer, David H. Harris, Mark E. Smythe, James H. Nakahara
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Patent number: 4557869Abstract: This invention concerns itself with a class of novel dihalo-substituted monophospha-s-triazines as exemplified by the compounds 1-dichlorophospha-3,5-bis(perfluoro-n-heptyl)-2,4,6-triazine and 1-dichlorophospha-3,5-bis[C.sub.3 F.sub.7 OCF(CF.sub.3)CF.sub.2 OCF(CF.sub.3)]-2,4,6-triazine, as well as their thio and azido derivatives.Type: GrantFiled: April 19, 1984Date of Patent: December 10, 1985Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Kazimiera J. L. Paciorek, Reinhold H. Kratzer, David H. Harris, Mark E. Smythe, James H. Nakahara
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Patent number: 4520197Abstract: Substituted tetrahydrobenzodiazaphosphorindiones or tetrahydropyridodiazaphosphorindiones, intermediates therefore, synthesis thereof, said compounds being useful herbicides.Type: GrantFiled: February 1, 1984Date of Patent: May 28, 1985Assignee: Zoecon CorporationInventor: Shy-Fuh Lee
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Patent number: 4495174Abstract: A long-acting, local anesthetic, comprising a polymeric phosphazene backbone, and 2-amino-4-picoline radical having local anesthetic activity and an amino functional group on the ring of said radical through which said radical is covalently attached to the phosphazene backbone by a phosphorous-nitrogen single bond is disclosed along with medicaments containing such anesthetics.Type: GrantFiled: June 21, 1982Date of Patent: January 22, 1985Assignee: Research CorporationInventors: Harry R. Allcock, Paul E. Austin, Thomas X. Neenan
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Patent number: 4405738Abstract: Polyester polymers and copolyester polymers incorporating flame retardant amounts of cyclotri (or tetra) phosphazenes. These cyclotri (or tetra) phosphazenes can be added at the start of ester interchange, prior to, for example polycondensation and conventional melt spinning, or if desired, after polycondensation but before melt spinning. Specific examples of cyclotriphosphazenes and cyclotetraphosphazenes are hexa(dialkylphosphinylmethyleneoxy)cyclotriphosphazene, octa(dialkylphosphinylmethyleneoxy)cyclotetraphosphazene, tris(alkylphosphinyldimethyleneoxy)cyclotriphosphazene, tetra(alkylphosphinyldimethyleneoxy)cyclotetraphosphazene, hexa(dialkylphosphinylmethylene)cyclotriphosphazene, and octa(dialkylphosphinylmethylene)cyclotetraphosphazene.Type: GrantFiled: March 5, 1982Date of Patent: September 20, 1983Assignee: Akzona IncorporatedInventor: Gerald W. McNeely
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Patent number: 4377558Abstract: The present invention relates to novel polychlorophosphazenes and to the process for their preparation.These polychlorophosphazenes of the general formula:Cl.sub.2 (O) P [NPCl.sub.2 ].sub.n Clare prepared by the polycondensation of P trichloro-N dichlorophosphoryl-monophosphazene with the controlled release of POCl.sub.3 according to the equation: ##STR1## The novel polychlorophosphazenes so obtained are useful as antiflame materials, as coatings, as fertilizers, etc. . . .Type: GrantFiled: September 15, 1980Date of Patent: March 22, 1983Assignee: Institut Mondial du PhosphateInventors: Roger De Jaeger, Moncef Helioui, Emile Puskaric
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Patent number: 4319913Abstract: This disclosure relates to novel substituted benzazaphospholes and to methods of preparing such compounds. This invention further relates to herbicidal compositions containing such benzazaphospholes and to herbicidal methods employing such compounds and compositions. The compounds of the present invention are members of a class of bicyclic hetero compounds containing only one phosphorus-nitrogen bond and different moieties bonded to the phosphorus and nitrogen.Type: GrantFiled: February 25, 1980Date of Patent: March 16, 1982Assignee: Monsanto CompanyInventors: Raymond C. Grabiak, James A. Miles
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Patent number: 4297510Abstract: A method for preparing unsymmetrical diphosphatetraazacyclooctatetraenes and the novel products produced thereby. The synthesis involves an interaction between an imido-tetraaryl-diphosphinic acid trihalide and a perfluorinated imidoylamidine in the presence of an acid acceptor.Type: GrantFiled: June 26, 1980Date of Patent: October 27, 1981Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Kazimiera J. L. Paciorek, Reinhold H. Kratzer, Thomas I. Ito, James H. Nakahara
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Patent number: 4281185Abstract: A method for synthesizing symmetrical diphosphatetraazacyclooctatetraenes and the products produced thereby. The synthesis involves effecting a reaction between a diaryltrihalophosphorane of a perfluoroalkyl amidine in the presence of an acid acceptor.Type: GrantFiled: June 26, 1980Date of Patent: July 28, 1981Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Kazimiera J. L. Paciorek, Reinhold H. Kratzer, Thomas I. Ito, James H. Nakahara
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Patent number: RE37781Abstract: This invention relates to substituted cyclic carbonyls and derivatives thereof useful as retroviral protease inhibitors, to pharmaceutical compositions comprising such compounds, and to methods of using these compounds for treating viral infection. A representative compound of the invention is the compound of formula: wherein R22 and R23 are allyl.Type: GrantFiled: March 10, 1999Date of Patent: July 2, 2002Assignee: DuPont Pharmaceuticals CompanyInventors: Patrick Y. Lam, Prabhakar K. Jadhav, Charles J. Eyermann, Carl N. Hodge, George V. De Lucca, James D. Rodgers