The Phosphorus And Nitrogen Are Members Of The Same Ring Patents (Class 564/13)
  • Patent number: 6919322
    Abstract: Novel FBPase inhibitors of the formula I are useful in the treatment of diabetes and other conditions associated with elevated blood glucose.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: July 19, 2005
    Assignee: Metabasis Therapeutics, Inc.
    Inventors: Brett C. Bookser, Qun Dang, K. Raja Reddy
  • Patent number: 6900352
    Abstract: A novel class of chiral phosphine ligands useful for producing catalyst for asymmetric reactions with general structure of Formula 1:
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: May 31, 2005
    Assignee: Advanced SynTech, LLC
    Inventors: Zeng Fu Wang, Kexin Yang, Boliang Lou
  • Publication number: 20040171856
    Abstract: 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: Application
    Filed: February 26, 2004
    Publication date: September 2, 2004
    Applicant: Wisconsin Alumni Research Foundation
    Inventors: Clark R. Landis, Wiechang Jin, Jonathan S. Owen, Thomas P. Clark
  • Patent number: 6717011
    Abstract: 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 strai
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: April 6, 2004
    Assignee: Stylacats Limited
    Inventors: Martin Wills, Simon William Breeden
  • Publication number: 20030220515
    Abstract: 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: Application
    Filed: May 21, 2003
    Publication date: November 27, 2003
    Applicant: OTSUKA CHEMICAL CO., LTD.
    Inventors: Nakacho Yoshifumi, Yabuhara Tadao, Tada Yuji, Nishioka Yoichi
  • Publication number: 20030176738
    Abstract: Cyclic phosphazene compounds of formula (I): 1
    Type: Application
    Filed: February 14, 2003
    Publication date: September 18, 2003
    Applicant: Solvay Solexis
    Inventors: Antonio Russo, Patrizia Maccone, Claudio Tonelli
  • Patent number: 6613922
    Abstract: 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: Grant
    Filed: January 22, 2002
    Date of Patent: September 2, 2003
    Assignee: Chirotech Technology Limited
    Inventors: Antonio Zanotti-Gerosa, Christophe Guillaume Malan, Julian Henschke, Daniela Herzberg
  • Patent number: 6605742
    Abstract: Novel cyclo azaphospha hydrocarbons according to formula I are provided. The compounds are useful as metalloprotease inhibitors.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: August 12, 2003
    Assignee: LEO Pharma A/S
    Inventors: Thomas Høyer, Morten Dahl Sørensen
  • Patent number: 6596893
    Abstract: 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: Grant
    Filed: August 12, 1999
    Date of Patent: July 22, 2003
    Assignee: Otsuka Chemical Co., Ltd.
    Inventors: Yoshifumi Nakacho, Tadao Yabuhara, Yuji Tada, Yoichi Nishioka
  • Publication number: 20030092802
    Abstract: 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: Application
    Filed: August 12, 1999
    Publication date: May 15, 2003
    Inventors: YOSHIFUMI NAKACHO, TADAO YABUHARA, YUJI TADA, YOICHI NISHIOKA
  • Publication number: 20030055254
    Abstract: 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: Application
    Filed: July 23, 2001
    Publication date: March 20, 2003
    Inventors: Clark R. Landis, Wiechang Jin, Jonathan S. Owen, Thomas P. Clark
  • Publication number: 20020177706
    Abstract: Novel cyclo azaphospha hydrocarbons according to formula I 1
    Type: Application
    Filed: April 11, 2002
    Publication date: November 28, 2002
    Inventors: Thomas Hoyer, Morten Dahl Sorensen
  • Publication number: 20020173607
    Abstract: 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: Application
    Filed: March 6, 2001
    Publication date: November 21, 2002
    Applicant: FMC Corporation
    Inventor: Thorsten Werner Brockmann
  • Publication number: 20020151735
    Abstract: A compound of the following formula: 1
    Type: Application
    Filed: January 22, 2002
    Publication date: October 17, 2002
    Inventors: Antonio Zanotti-Gerosa, Christophe Guillaume Malan, Julian Henschke, Daniela Herzberg
  • Publication number: 20020065434
    Abstract: Bidentate phosphine ligands of the formula 1
    Type: Application
    Filed: November 13, 2001
    Publication date: May 30, 2002
    Inventors: Holger Geissler, Petrus W.N.M. van Leeuwen, Paul C. J. Kamer, Lars A. van der Veen
  • Patent number: 5919968
    Abstract: 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: Grant
    Filed: November 10, 1997
    Date of Patent: July 6, 1999
    Assignee: Daihachi Chemical Industry Co., Ltd.
    Inventors: Kozo Kitamura, Tsuyoshi Kihara, Yoshinori Tanaka, Yoshimi Yano
  • Patent number: 5698737
    Abstract: 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: Grant
    Filed: June 7, 1995
    Date of Patent: December 16, 1997
    Assignee: Iowa State University Research Foundation
    Inventors: John G. Verkade, Thyagarajan Mohan, Andrzej E. Wroblewski
  • Patent number: 5652207
    Abstract: 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: Grant
    Filed: August 12, 1996
    Date of Patent: July 29, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventor: Naresh Dhirajlal Ghatlia
  • Patent number: 5610294
    Abstract: 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: Grant
    Filed: February 16, 1994
    Date of Patent: March 11, 1997
    Assignee: The Du Pont Merck Pharmaceutical Company
    Inventors: Patrick Y. Lam, Prabhakar K. Jadhav, Charles J. Eyermann, Carl N. Hodge, George V. De Lucca, James D. Rodgers
  • Patent number: 5602278
    Abstract: 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: Grant
    Filed: October 20, 1994
    Date of Patent: February 11, 1997
    Inventor: Lynn Kirkpatrick
  • Patent number: 5534646
    Abstract: 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: Grant
    Filed: August 31, 1994
    Date of Patent: July 9, 1996
    Assignee: Ciba-Geigy Corporation
    Inventor: Sai P. Shum
  • Patent number: 5367084
    Abstract: 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: Grant
    Filed: October 26, 1993
    Date of Patent: November 22, 1994
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: John Verkade, Jiansheng Tang
  • Patent number: 5352829
    Abstract: 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: Grant
    Filed: April 2, 1993
    Date of Patent: October 4, 1994
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Paritosh R. Dave, Farhad Forohar, Michael Chaykovsky, Clifford D. Bedford
  • Patent number: 5326910
    Abstract: 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: Grant
    Filed: March 1, 1993
    Date of Patent: July 5, 1994
    Assignee: Lubricating Specialties Co.
    Inventors: Kazimiera J. L. Paciorek, Steven R. Masuda, Wen-Huey Lin
  • Patent number: 5298651
    Abstract: 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: Grant
    Filed: October 15, 1992
    Date of Patent: March 29, 1994
    Assignee: Monsanto Company
    Inventors: William D. McGhee, Thomas E. Waldman
  • Patent number: 5174923
    Abstract: 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: Grant
    Filed: August 27, 1990
    Date of Patent: December 29, 1992
    Assignee: Eastman Kodak Company
    Inventors: Janglin Chen, Wayne T. Ferrar, Hans R. Grashof, Akemi S. Marshall
  • Patent number: 5105001
    Abstract: 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: Grant
    Filed: September 18, 1990
    Date of Patent: April 14, 1992
    Assignee: Ethyl Corporation
    Inventors: Dixie E. Goins, Hsueh M. Li
  • Patent number: 5068425
    Abstract: 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: Grant
    Filed: October 17, 1990
    Date of Patent: November 26, 1991
    Assignee: Societe Nationale Elf Aquitaine
    Inventor: Sylvain Juge
  • Patent number: 5063252
    Abstract: 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: Grant
    Filed: November 7, 1989
    Date of Patent: November 5, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Andreas Ruckes, Martin Brock, Richard Weider
  • Patent number: 5051533
    Abstract: Prophosphatrane compounds of the formula ##STR1## are disclosed. These compounds are strong Lewis bases and are useful as proton abstracting reagents.
    Type: Grant
    Filed: April 18, 1990
    Date of Patent: September 24, 1991
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: John G. Verkade
  • Patent number: 4971897
    Abstract: 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: Grant
    Filed: February 3, 1989
    Date of Patent: November 20, 1990
    Assignee: Eastman Kodak Company
    Inventors: Janglin Chen, Wayne T. Ferrar, Hans R. Grashof, Akemi S. Marshall
  • Patent number: 4952728
    Abstract: 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: Grant
    Filed: August 26, 1987
    Date of Patent: August 28, 1990
    Assignee: Societe Nationale Elf Aquitaine
    Inventors: Sylvain Juge, Jean-Pierre Genet
  • Patent number: 4900866
    Abstract: 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: Grant
    Filed: September 19, 1988
    Date of Patent: February 13, 1990
    Assignee: Studiengesellschaft Kohle mbH
    Inventors: Gunther Wilke, Jaroslaw Monkiewicz, Herbert Kuhn
  • Patent number: 4855389
    Abstract: This invention relates to a process for producing phosphonitrile oligomers containing maleimido phenoxy groups.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: August 8, 1989
    Assignee: Shin Nisso Kako Co., Ltd.
    Inventors: Shinichiro Ueyama, Masayuki Furukawa, Tadaichi Nishikawa
  • Patent number: 4804655
    Abstract: 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: Grant
    Filed: December 22, 1986
    Date of Patent: February 14, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Nikolaus Muller, Gerhard Bonse, Peter Andrews, Wilhelm Stendel, Robert Steffens
  • Patent number: 4776875
    Abstract: 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: Grant
    Filed: March 26, 1986
    Date of Patent: October 11, 1988
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Heinz J. Loher, Klaus Bauer, Hermann Bieringer
  • Patent number: 4748263
    Abstract: 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: Grant
    Filed: October 29, 1986
    Date of Patent: May 31, 1988
    Assignee: The United States of America as represented by the administrator of the National Aeronautics and Space Administration
    Inventors: Devendra Kumar, George M. Fohlen, John A. Parker
  • Patent number: 4636387
    Abstract: 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: Grant
    Filed: September 21, 1984
    Date of Patent: January 13, 1987
    Assignee: Research Corporation
    Inventors: Harry R. Allcock, Paul E. Austin, Thomas X. Neenan
  • Patent number: 4587362
    Abstract: 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: Grant
    Filed: March 5, 1984
    Date of Patent: May 6, 1986
    Assignee: Stauffer Chemical Company
    Inventors: Milton L. Honig, Edward D. Weil
  • Patent number: 4582932
    Abstract: 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: Grant
    Filed: May 27, 1983
    Date of Patent: April 15, 1986
    Assignee: McDonnell Douglas Corporation
    Inventors: Norman R. Byrd, Daniel C. Peek
  • Patent number: 4559175
    Abstract: 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: Grant
    Filed: April 19, 1984
    Date of Patent: December 17, 1985
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Kazimiera J. L. Paciorek, Reinhold H. Kratzer, David H. Harris, Mark E. Smythe, James H. Nakahara
  • Patent number: 4557869
    Abstract: 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: Grant
    Filed: April 19, 1984
    Date of Patent: December 10, 1985
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Kazimiera J. L. Paciorek, Reinhold H. Kratzer, David H. Harris, Mark E. Smythe, James H. Nakahara
  • Patent number: 4520197
    Abstract: Substituted tetrahydrobenzodiazaphosphorindiones or tetrahydropyridodiazaphosphorindiones, intermediates therefore, synthesis thereof, said compounds being useful herbicides.
    Type: Grant
    Filed: February 1, 1984
    Date of Patent: May 28, 1985
    Assignee: Zoecon Corporation
    Inventor: Shy-Fuh Lee
  • Patent number: 4495174
    Abstract: 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: Grant
    Filed: June 21, 1982
    Date of Patent: January 22, 1985
    Assignee: Research Corporation
    Inventors: Harry R. Allcock, Paul E. Austin, Thomas X. Neenan
  • Patent number: 4405738
    Abstract: 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: Grant
    Filed: March 5, 1982
    Date of Patent: September 20, 1983
    Assignee: Akzona Incorporated
    Inventor: Gerald W. McNeely
  • Patent number: 4377558
    Abstract: 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: Grant
    Filed: September 15, 1980
    Date of Patent: March 22, 1983
    Assignee: Institut Mondial du Phosphate
    Inventors: Roger De Jaeger, Moncef Helioui, Emile Puskaric
  • Patent number: 4319913
    Abstract: 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: Grant
    Filed: February 25, 1980
    Date of Patent: March 16, 1982
    Assignee: Monsanto Company
    Inventors: Raymond C. Grabiak, James A. Miles
  • Patent number: 4297510
    Abstract: 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: Grant
    Filed: June 26, 1980
    Date of Patent: October 27, 1981
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Kazimiera J. L. Paciorek, Reinhold H. Kratzer, Thomas I. Ito, James H. Nakahara
  • Patent number: 4281185
    Abstract: 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: Grant
    Filed: June 26, 1980
    Date of Patent: July 28, 1981
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Kazimiera J. L. Paciorek, Reinhold H. Kratzer, Thomas I. Ito, James H. Nakahara
  • Patent number: RE37781
    Abstract: 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: Grant
    Filed: March 10, 1999
    Date of Patent: July 2, 2002
    Assignee: DuPont Pharmaceuticals Company
    Inventors: Patrick Y. Lam, Prabhakar K. Jadhav, Charles J. Eyermann, Carl N. Hodge, George V. De Lucca, James D. Rodgers