Halogen Containing Patents (Class 568/16)
-
Patent number: 5600006Abstract: The invention relates to novel 2,2'-bis [bis(aryl)phosphinomethyl]-1,1'-binaphthyls of the formula ##STR1## in which Ar.sup.2 is a phenyl radical, R' is an alkyl radical having 1 to 4 carbon atoms, CF.sub.3, fluorine, chlorine or bromine, and n is 1 or 2.Type: GrantFiled: November 10, 1994Date of Patent: February 4, 1997Assignee: Hoechst A.G.Inventors: Dieter Regnat, Hans-Jerg Kleiner
-
Patent number: 5587517Abstract: Preparation of chlorophenylphosphanes of the formula(C.sub.6 H.sub.5).sub.n PCl.sub.3-nin which n is 1 or 2, triphenylphosphane (C.sub.6 H.sub.5).sub.3 P and phosphorus trichloride PCl.sub.3 are reacted at temperatures above 300.degree. C., for which liquid triphenylphosphane and gaseous phosphorus trichloride are introduced in a molar ratio of 1:(3 to 12) at the upper end of a vertically arranged, elongated and heated reaction zone. The reaction product discharged at the lower end of the reation zone is transferred to a residence zone charged with phosphorus pentachloride. Finally, the excess phosphorus trichloride is removed from the reaction product, via a subsequent fractionating zone, by heating the residence zone with the resultant formation of a PCl.sub.3 -depleted reaction product. The substances contained in the PCl.sub.3 -depleted reaction product are separated from one another by fractionated rectification under reduced pressure.Type: GrantFiled: November 1, 1994Date of Patent: December 24, 1996Assignee: Hoechst AktiengesellschaftInventor: Guido Scholz
-
Patent number: 5554795Abstract: In accordance with the present invention there is provided a cyclopentadienyl-type ligand represented by the formula ZA, wherein Z is a cyclopentadienyl-type group, wherein A is --YPR.sub.2, --YNR.sub.2, or --NR.sub.2, wherein Y is an alkylene group containing 1 to 24 carbon atoms, wherein each R is individually selected from alkyl groups containing 1 to 20 carbon atoms. Another aspect of the invention is to provide a metallocene represented by the formula ZAMX.sub.3, wherein Z and A are as described above, M is a Group IVB or VB transition metal, and X is a halide. Other aspects of the present invention include catalyst systems comprising the metallocenes and an organoaluminoxane, processes for preparing the above defined ligands, metallocenes and catalyst systems, and polymerization processes employing the catalyst systems.Type: GrantFiled: May 19, 1995Date of Patent: September 10, 1996Assignee: Phillips Petroleum CompanyInventors: Krisztina Frey, Gabriele von Massow, Helmut G. Alt, M. Bruce Welch
-
Patent number: 5541351Abstract: Processes are disclosed for preparing compounds of the formula Z--R--Z where each Z can be selected from cyclopentadienyl type radicals such as substituted or unsubstituted cyclopentadienyl, indenyl, fluorenyl or tetrahydroindenyl or where one Z is Cl, Br, or I by reacting specific Z precursors with a dihaloalkylene compound. Also new cyclopentadienyl-type compounds are disclosed.Type: GrantFiled: August 15, 1994Date of Patent: July 30, 1996Assignee: Phillips Petroleum CompanyInventors: Konstantinos Patsidis, Syriac J. Palackal, Helmut G. Alt
-
Patent number: 5527966Abstract: Triphenylphosphine (TPP) is prepared by reacting triphenylphosphine dichloride (TPPCl.sub.2) with magnesium, aluminum and/or iron in the presence of an inert solvent, employing a TPPCl.sub.2 solution whose content of phosgene, chlorine, diphosgene, hydrogen chloride, thionyl chloride, sulfuryl chloride, phosphorus trichloride, phosphorus oxychloride and/or aliphatic halogen compounds (active chlorine compounds) totals less than 1000 ppm Cl.Type: GrantFiled: August 3, 1994Date of Patent: June 18, 1996Assignee: BASF AktiengesellschaftInventors: Dieter Hermeling, Peter Bassler, Peter Hammes, Randolf Hugo, Peter Lechtken, Hardo Siegel
-
Patent number: 5527960Abstract: Fluorinating reagents expressed in a general formula; ##STR1## (In the general formula, R is an alkyl group having 1 to 5 carbons or a dialkylamino group in which each alkyl group has 1 to 3 carbons.), and a fluorinating method to fluorinate an alcoholic hydroxyl group by using the reagent. Raw materials of the aforesaid fluorinating reagents can be easily converted to object products and are less poisonous and corrosive. Their procurement and preparation are also easy. Further, it is easy to fluorinate compounds containing an alcoholic hydroxyl group by using this fluorinating reagents.Type: GrantFiled: January 24, 1995Date of Patent: June 18, 1996Assignee: Daikin Industries Ltd.Inventor: Hirokazu Aoyama
-
Patent number: 5523437Abstract: A tertiary phosphine compound of the formula (1): ##STR1## wherein R.sup.1 and R.sup.2 represent independently from each other a hydrogen atom or a methyl group, or together form --CH.dbd.CH--CH.dbd.CH--; R.sup.3 is a hydrogen atom or a cycloalkyl group having 5 to 7 carbon atoms or a lower alkyl group which may be substituted with a halogen atom, a lower alkoxy group, a lower alkoxyalkoxy group or a phenyl group; X.sup.1 is a halogen atom when both R.sup.1 and R.sup.2 are hydrogen atoms, or a hydrogen atom, a halogen atom, a lower alkyl group or a lower alkoxy group when at least one of R.sup.1 and R.sup.2 is not a hydrogen atoms; and m is an integer of 1 to 5, which is useful as a ligand of a transition metal complex that can catalyze various reactions.Type: GrantFiled: July 26, 1994Date of Patent: June 4, 1996Assignee: Sumitomo Chemical Co., Ltd.Inventors: Tamio Hayashi, Yasuhiro Uozumi, Kazunori Iwakura, Isao Kurimoto, Masayoshi Minai
-
Patent number: 5502083Abstract: The composition of the present invention is excellent in compatibility, transparency and curability and give a cured coat of excellent gloss and of less smell, and cured products of excellent properties can be obtained by curing the composition.The present invention relates to an onium salt represented by the following formula (1): ##STR1## wherein Ar is a mono- to tetra-valent aromatic group, X is a bisphenylsulfonio group which may have a substituent, a is 1-4, b is 0 or 1-3, a+b is 1-4, n is 1-4, and Z is a halide represented by the following formula (3):MQ.sub.m (OH).sub.l (3)where M is a boron atom, a phosphorus atom, an arsenic atom or an antimony atom, Q is a halogen atom, m is 3-6, l is 0 or 1, and m+l is 4-6; a photopolymerization initiator containing the onium salt as an active ingredient; an energy ray-curable composition containing the initiator; and a cured product.Type: GrantFiled: June 8, 1994Date of Patent: March 26, 1996Assignee: Nippon Kayaku Kabushiki KaishaInventors: Tetsuya Abe, Kazuhiko Ishii, Minoru Yokoshima
-
Patent number: 5468890Abstract: The invention concerns iodonium salts of the general formula A-I.sup.+ --B X.sup.-, in which A is a group of the general formula ##STR1## in which C is a monovalent aromatic hydrocarbon group with 6 to 14 carbon atoms or a monovalent aromatic hydrocarbon group containing at least one oxygen and/or sulphur atom and with 5 to 14 atoms in the aromatic ring, D, E and F are each substituents of C, D being a group of the formula --(O).sub.x --(R).sub.y --SiR1/3, E being a group of the formula --OR.sup.2, F being a group of the formula --R.sup.3, a being 1, 2, or 3, b being 0, 1 or 2, c being 0, 1 or 2, x being 0 or 1 and y being 0 or 1, and R, R.sup.1, R.sup.2 and R.sup.3 are as defined in claim 1; B is a group of the formula ##STR2## in which E and F, which are as defined above, may each be bound to the 2, 3, 4, 5 or 6 position in the benzene ring, d is 0, 1 or 2, e is 0, 1 or 2 and X.sup.- is a tosylate anion or a weakly nucleophilic or non-nucleophilic anion Y.sup.- selected from the group comprising CF.sub.Type: GrantFiled: June 8, 1994Date of Patent: November 21, 1995Assignee: Wacker-Chemie GmbHInventors: Christian Herzig, Silke Scheiding
-
Patent number: 5442084Abstract: The present invention is a method for selectively fluorinating various methylenephosphonate and methylenephosphorane derivatives using an electrophilic fluorinating agent, such as N-fluoro 1,4-diazabicyclo[ 2.2.2]octane by fluorinating the monohalogenated methylenephosphonate or methylenephosphorane derivative to produce fluoromethylenephosphonate or fluoro-methylenephosphorane derivatives useful as fluorinated Horner-Emmons or Wittig reagents in producing selectively fluorinated vinylic compounds.Type: GrantFiled: October 28, 1994Date of Patent: August 15, 1995Assignee: Air Products and Chemicals, Inc.Inventor: Gauri S. Lal
-
Patent number: 5419845Abstract: A coolant or antifreeze composition has one or more glycols or glycol ethers in combination with water, one or more additives, and an effective amount of one or more perfluoro-gem-diphosphonates as corrosion inhibitors.Type: GrantFiled: March 15, 1994Date of Patent: May 30, 1995Assignee: BASF CorporationInventors: Stanley T. Hirozawa, David E. Turcotte, Michael C. Welch, Michael A. Reynolds
-
Patent number: 5414134Abstract: Bisphosphine oxide monomers and homologs thereof may be incorporated into polycarbonates in order to obtain a flame retardant polymer. More particularly, bis[2,5-(diphenylphosphine oxide)]-1,4-hydroquinone and homologs thereof may be used to prepare flame retardant polycarbonates that retain high glass transition temperature and high impact resistances.Type: GrantFiled: December 20, 1993Date of Patent: May 9, 1995Assignee: General Electric CompanyInventor: Gary C. Davis
-
Patent number: 5352822Abstract: The present invention discloses pesticidally active compounds of formula (II) ##STR1## or a salt thereof, wherein Q is an monocyclic aromatic ring, or fused bicyclic ring system of which at least one ring is aromatic containing 9 or 10 atoms of which one may be nitrogen and the rest carbon each ring system being optionally substituted, or Q is a dihalovinyl group or a group R.sup.6 --C.tbd.C-- where R.sup.6 is C.sub.1-4 alkyl, tri C.sub.1-4 alkylsilyl, halogen or hydrogen; R.sup.2, R.sup.3 , R.sup.4 and R.sup.5 are the same or different with at least one being hydrogen and the others being independently selected from hydrogen, halo, C.sub.1-4 alkyl or C.sub.1-4 haloalkyl; and R.sup.1 is selected from hydrogen and C.sub.1-8 hydrocarbyl optionally substituted by dioxalanyl, halo, cyano, trifluoromethyl, trifluoromethylthio or C.sub.1-6 alkoxy and X.sup.1 is hydrogen, fluoro or chloro.Type: GrantFiled: April 7, 1993Date of Patent: October 4, 1994Assignee: Roussel UclafInventors: Robert J. Blade, George S. Cockerill, John E. Robinson
-
Patent number: 5202493Abstract: Chiral tridentate bis(phospholanes) which coordinate as ligands in a meridinal fashion on an octahedral metal or which coordinate in square-planar environments are provided with a method for their preparation.Type: GrantFiled: April 26, 1991Date of Patent: April 13, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventor: Mark J. Burk
-
Patent number: 5132448Abstract: .alpha.-Chloro phosphorus ylides of the formula I ##STR1## where the Ar radicals are identical or different aryl groups, and E is a substituent which stabilizes the ylide (I), are prepared by reacting a phosphonium salt of the formula II ##STR2## where Hal is chlorine, bromine or iodine, with a chlorinating agent, using bleaching powder as chlorinating agent.Type: GrantFiled: September 11, 1990Date of Patent: July 21, 1992Assignee: BASF AktiengesellschaftInventor: Bernd Schaeffer
-
Patent number: 5126473Abstract: A process is described for the hydrided of halogen-substituted compounds of the second to fourth period of Groups III to V of the periodic system, with the exception of gallium, aluminum, carbon, or nitrogen. A finely-granulated aluminum is added to a molten salt melt that consists of 50-67 molar % AlCl.sub.3 (anhydrous) and 50 to 33 molar % of sodium chloride. Then to the stirred, or by some other means dispersed suspension, hydrogen is introduced to hydrided the finely-dispersed aluminum. Thereafter the mixture is reacted with the halogen-substituted compound and the resulting hydrided compound is renewed.Type: GrantFiled: August 10, 1990Date of Patent: June 30, 1992Assignee: Degussa AktiengesellschaftInventors: Hans-Juergen Klockner, Ralf Schmoll, Peter Panster, Peter Kleinschmit
-
Patent number: 5073643Abstract: Synthesis use of a new class of diaryliodonium salt photo and thermal polymerization initiators in which the aryl groups are substituted with alkoxy group bearing hydroxy groups. Good to excellent yields are obtained of diaryliodonium salts in which the aryl groups are substituted with long chain alkoxy groups, which alkoxy groups also possess at least one hydroxyl moiety attached at the 2-position of an alkoxy group. The resultant salts have enhanced solubility when compared with their lower molecular weight counterparts. The hydroxyl groups serve as chain transfer agents; and, in cross linking UV-induced cationic polymerizations, the hydroxyl groups effect marked accelertion on polymerization rates. The salts also have excellent compatability with nonpolar monomers such as epoxidized oil and poly(1,2-butadience oxide) and provide further benefits when they are used along with copper cocatalysts in thermally curable polymer systems.Type: GrantFiled: August 30, 1990Date of Patent: December 17, 1991Assignee: Polyset CorporationInventor: James V. Crivello
-
Patent number: 5070214Abstract: Disclosed is an organic material with a very narrow electronic spin resonance (ESR) line. This material is formed by a 1, 2, 7, 8-tetrahydrocyclopentataperylene salt which may have, advantageously, undergone a heat treatment. The material can be applied to the fabrication of probes for gaussmeters and magnetometers.Type: GrantFiled: May 30, 1989Date of Patent: December 3, 1991Assignee: Thomson CSFInventors: Paul Penven, Philippe Michel, Denis Jerome, Alexandre Moradpour
-
Patent number: 5049691Abstract: Phosphorus compounds having at least one chlorine, bromine or iodine bonded directly to phosphorus are transhalogenated with fluorine by reaction with anhydrous hydrogen fluoride in an inert solvent, e.g., xylene, methylene chloride, in a manner such that said anhydrous hydrogen fluoride is added to said phosphorus compound at a rate such that said anhydrous hydrogen fluoride reacts with said phosphorus compound without the accumulation of an amount of unreacted anhydrous hydrogen fluoride which is sufficient to cause substantial decomposition of the desired fluorophosphorus product.Type: GrantFiled: March 5, 1990Date of Patent: September 17, 1991Assignee: Ethyl CorporationInventors: Edward A. Burt, Lester P. J. Burton, Meng-Sheng Ao, Barbara C. Stahly
-
Patent number: 4942252Abstract: Method for synthesizing alkyl halides of phosphorus, arsenic, or antimony from the corresponding phosphorus, arsenic, or antimony alkyl and phosphorus, arsenic, or antimony halide. An improved synthesis of alkyl phosphorus or arsenic hydrides from the corresponding alkyl phosphorus, arsenic, or antimony halides is also disclosed.Type: GrantFiled: August 16, 1988Date of Patent: July 17, 1990Assignee: CVD IncorporatedInventors: Benjamin C. Hui, Jorg Lorberth
-
Patent number: 4727194Abstract: An improved process for preparing a phosphorus complex of the formula:RP.sym.Cl.sub.3.P.crclbar.Cl.sub.6wherein R is selected from the group consisting of: aryl; substituted aryl, wherein the substituent can comprise at least one member selected from the group consisting of nitro, chloro, fluoro, alkyl, fluoro-alkyl, alkoxy and mixtures thereof; alkyl and substituted alkyl by the reaction of phosphorus pentachloride and a phosphonic dichloride of the formula:RPOCl.sub.2wherein R is defined as above, wherein the improvement comprises: reacting the phosphorus pentachloride and the phsophonic dichloride in the presence of an inert solvent capable of co-distilling a phosphorus oxychloride reaction product, for example, chlorobenzene, and co-distilling said phosphorus oxychloride reaction product during the reaction of the phosphorus pentachloride and the phosphonic dichloride. The inert solvent can boil at a temperature ranging from about 120.degree. C. to about 150.degree. C.Type: GrantFiled: March 16, 1987Date of Patent: February 23, 1988Assignee: Stauffer Chemical CompanyInventor: Elliott Bay
-
Patent number: 4724267Abstract: Bis(haloacylaromatic) compounds have been made by a new process in which monohaloacylated aromatic compounds have been reacted by a coupling reaction. These bis(haloacylaromatic) compounds can be employed as monomers in the preparation of polyesters and polyamides which have easy processability. The monohaloacylated compound is coupled by reacting two moles of the monomer with a carbon or sulfur compound containing at least two halogen atoms in the presence of a Friedel-Crafts catalyst.Type: GrantFiled: May 23, 1986Date of Patent: February 9, 1988Assignee: The Dow Chemical CompanyInventors: George M. St. George, Marlin E. Walters
-
Patent number: 4698448Abstract: Compounds of the formula ##STR1## wherein R is lower alkyl or aryl, Y is oxygen or sulfur, m is 0 or 1, Ar is arylene, and X is halogen, methyl, or aryloxy, or polymers containing repeating units of this kind are prepared from a compound R--P(Y).sub.r Cl.sub.2, where r is 0 or 1 but is never greater than m, by reaction with one or two molar parts of a compound H--ArX in the presence of a Friedel-Crafts catalyst.Type: GrantFiled: July 2, 1985Date of Patent: October 6, 1987Assignee: Rohm GmbHInventors: Werner Ude, Siegmund Besecke, Achim Riemann, Guenther Schroeder
-
Patent number: 4683317Abstract: Aryliodonium salts resulting from the condensation of aryliodosotosylates and aryl ketones are provided which are used as photoinitiators to effect deep section UV cures. Deep section photopolymerizable organic materials are also provided which can be used as encapsulating agents to encapsulate a wide variety of electronic components.Type: GrantFiled: April 8, 1985Date of Patent: July 28, 1987Assignee: General Electric CompanyInventors: James V. Crivello, Julia L. Lee
-
Patent number: 4681693Abstract: New products having the structure of arylphosphines or of derivatives of arylphosphines with an oxygen or sulphur atom directly bonded to the phosphorus atom, containing perfluoroalkylether chains, characterized in that such chains are bonded to the benzene ring through a non-perfluorinated bridge, and are obtained by a process substantially decreasing their production costs, and suitable to be used as stabilizers of perfluoropolyether oils and greases to prevent their degradation in the presence of metals, and the corrosion of the same metals, such as, e.g., Al, Ti, V, or their alloys, when operating in oxidizing and high-temperature environments.Type: GrantFiled: April 23, 1986Date of Patent: July 21, 1987Assignee: Ausimont S.p.A.Inventors: Piero Gavezotti, Ezio Strepparola
-
Patent number: 4656293Abstract: Organic chlorophosphanes of the formula III ##STR1## in which R.sup.1 is chlorine or an aliphatic radical, preferably only chlorine, andR.sup.2 is an aromatic, heterocyclic or aliphatic radical,are prepared by reacting organic phosphorus oxychlorides of the formula I ##STR2## in which R.sup.1 is chlorine or an aliphatic radical, preferably only chlorine,R.sup.2 is an aromatic or heterocyclic radical in the event that R.sup.1 is chlorine and an aromatic, heterocyclic or aliphatic radical in the event that R.sup.1 is an aliphatic radical,with a trialkylphosphane of the formula II(R.sup.3).sub.3 P (II)in which R.sup.3 is an aliphatic radical, at temperatures between about 20.degree. and about 170.degree. C. Said organic chlorophosphanes III are mainly intermediates in various fields, such as pharmaceuticals, plant protection, dyestuffs and polymers.Type: GrantFiled: January 9, 1986Date of Patent: April 7, 1987Assignee: Hoechst AktiengesellschaftInventor: Hans-Jerg Kleiner
-
Patent number: 4632995Abstract: Organic chlorophosphanes of the formula II ##STR1## in which R.sup.1 =an aromatic or heterocyclic radical and R.sup.2 =an aliphatic radical or Cl are prepared by reacting organic phosphorus oxychlorides of the formula I ##STR2## in which R.sup.1 and R.sup.2 have the meaning mentioned above with triphenylphosphane (C.sub.6 H.sub.5).sub.3 P at an elevated temperature. The organic chlorophosphanes II are, in the main, intermediates in various specialized fields, such as the pharmaceuticals, plant protection, dyestuffs and polymers sectors.Type: GrantFiled: April 12, 1984Date of Patent: December 30, 1986Assignee: Hoechst AktiengesellschaftInventor: Hans-Jerg Kleiner
-
Patent number: 4621123Abstract: Novel phosphorus-containing polyglycidyl ethers capable of forming a cured epoxy resin having a high flame retardancy and excellent in heat resistance characteristics such as heat deterioration resistance, glass transition temperature, thermal deformation temperature and the like; a process for producing said phosphorus-containing polyglycidyl ethers; phosphorus-containing polyphenol compounds used in production of said phosphorus-containing polyglycidyl ethers; and a process for producing said phosphorus-containing polyphenol compounds.Type: GrantFiled: December 16, 1985Date of Patent: November 4, 1986Assignee: Sumitomo Chemical Company, LimitedInventors: Hisao Takagishi, Kazunori Kawakami, Kunimasa Kamio, Khoichi Okuno
-
Patent number: 4537725Abstract: New diaryliodosyl salts have the formula ##STR1## where R.sup.7 and R.sup.8, which may be the same or different, each represent a monovalent aromatic radical of from 6 to 22 carbon atoms,Z.sup.t- denotes a t-valent anion of formula MX.sub.n.sup.- or R.sup.9 SO.sub.3.sup.- or a t-valent anion of a halogen-free inorganic oxy acid,t is 1, 2 or 3,M represents an atom of a metal or metalloid,X denotes a halogen atom, preferably of fluorine or chlorine,n is 4, 5, or 6 and is one more than the valency of M, with the proviso that MX.sub.n.sup.- can represent SbOHF.sub.5.sup.-, andR.sup.9 denotes a monovalent aliphatic or aromatic group of 1 to 20 carbon atoms.These salts have utility as photocuring catalysts for cationically polymerizable materials such as epoxide resins and phenolic resins.Type: GrantFiled: September 9, 1983Date of Patent: August 27, 1985Assignee: Ciba-Geigy CorporationInventor: Edward Irving
-
Patent number: 4526776Abstract: An hepatobiliary imaging agent is disclosed which is a cationic complex of Tc-99m, a cyanate or thiocyanate ion, and a mono or polydentate organic ligand having one or more donor atoms, each with a free-electron pair available for accepting a proton or for complexing with Tc-99m to form a cationic complex. These complexes can provide images of the hepatobiliary transit in as little as ten minutes.Type: GrantFiled: April 15, 1983Date of Patent: July 2, 1985Assignee: E. I. du Pont de Nemours & CompanyInventors: Vinayakam Subramanyam, Algis Rajeckas
-
Patent number: 4512967Abstract: A cationic lipophilic complex of technetium is disclosed wherein all of the coordination positions of the technetium atom are filled with a neutral donor atom having a pair of electrons available for forming a coordinate bond with technetium. The donor atoms are provided by target-seeking ligands or salts thereof, said ligands having the following structure of one of formulas I, II or III. Such complexes are useful for imaging heart and hepatobiliary tissues.Type: GrantFiled: August 2, 1982Date of Patent: April 23, 1985Assignee: E. I. Du Pont de Nemours and CompamyInventor: Karen E. Linder
-
Patent number: 4507247Abstract: There are provided novel sulfonated Group Va ylides defined by the following Formula I: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.Type: GrantFiled: February 25, 1983Date of Patent: March 26, 1985Assignee: Gulf Research & Development CompanyInventors: David L. Beach, James J. Harrison
-
Patent number: 4497790Abstract: The present invention relates to methods for making cationic radiodiagnostic agents and, in particular, to methods for preparing .sup.99m Tc-labelled cationic radiodiagnostic agents.Type: GrantFiled: September 3, 1982Date of Patent: February 5, 1985Assignee: E. I. du Pont de Nemours and Company, Inc.Inventor: Manuel S. Rodriguez
-
Patent number: 4463202Abstract: A method of treating the residue generated in the production of diphenylphosphinous chloride is presented. The method comprises extracting the aluminum content of the residue by contacting the residue with an organic solvent to produce a mixture which when hydrolyzed results in a two-phase solution, the organic phase of which can be incinerated.Type: GrantFiled: August 17, 1982Date of Patent: July 31, 1984Assignee: Stauffer Chemical CompanyInventor: Gershon J. Davis
-
Patent number: 4454349Abstract: Fluorinated phosphines having the general formula ##STR1## wherein R.sub.f OR.sub.f -- is a perfluoroalkylether group containing at least one ether linkage are useful as antioxidation additives for perfluorinated fluids.Type: GrantFiled: September 14, 1982Date of Patent: June 12, 1984Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Christ Tamborski, Carl E. Snyder, Jr., John B. Christian
-
Patent number: 4451450Abstract: A normally solid, hydrophilic compound capable of binding with Tc-99m to form a cationic complex is provided. The compound has a formula selected from: ##STR1## wherein: R, R', R", R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are each independently selected from hydrogen; or substituted or unsubstituted alkyl, alkylene, aryl, alkylaryl, arylalkyl, monocycloalkyl, polycycloalkyl, heterocyclic and carbocyclic groups; and R plus R.sup.i in formula (A) may be taken together to form a cyclic compound;A, A', A", A.sup.1, A.sup.2, A.sup.3, A.sup.4, A.sup.5 and A.sup.6 are independently neutral functional elements, each having a free electron pair available for accepting a proton to provide a charged ligand and having the capability of complexing with Tc-99m to form a cationic complex;Y.sup.1, Y.sup.2, Y.sup.3, Y.sup.4, Y.sup.5 and Y.sup.Type: GrantFiled: October 15, 1981Date of Patent: May 29, 1984Assignee: New England Nuclear CorporationInventor: Vinayakam Subramanyam
-
Patent number: 4377529Abstract: There are provided novel sulfonated group Va ylides defined by the following Formula I: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.Type: GrantFiled: November 24, 1980Date of Patent: March 22, 1983Assignee: Gulf Research & Development CompanyInventors: David L. Beach, Harrison, James J.
-
Patent number: 4377528Abstract: There are provided novel salts defined by the following Formula I: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.Type: GrantFiled: November 24, 1980Date of Patent: March 22, 1983Assignee: Gulf Research & Development CompanyInventors: David L. Beach, James J. Harrison
-
Patent number: 4310469Abstract: Cationic polymerization of epoxy monomers or prepolymers can be achieved by use of certain radiation sensitive aromatic halonium salts. Curable compositions are provided which can be used as sealants, coating compounds, encapsulants, etc.Type: GrantFiled: February 1, 1980Date of Patent: January 12, 1982Assignee: General Electric CompanyInventor: James V. Crivello
-
Patent number: 4293502Abstract: A new group of nickel ylides is provided that is highly active at relatively low operating temperatures and pressures in the oligomerization of ethylene. The compounds can be defined by the following Formula I: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.Type: GrantFiled: August 18, 1980Date of Patent: October 6, 1981Assignee: Gulf Research & Development CompanyInventors: David L. Beach, James J. Harrison
-
Patent number: 4219654Abstract: Halogen onium salts, and onium salts of Group VA and V1A elements having an MF.sub.6.sup.- anion, where M is selected from P, As and Sb, have been found to exhibit unusual activity under ultraviolet light. These onium salts can be employed as cationic photoinitiators when used with a variety of organic resins and cyclic organic compounds.Type: GrantFiled: October 10, 1978Date of Patent: August 26, 1980Assignee: General Electric CompanyInventor: James V. Crivello
-
Patent number: 4209468Abstract: Oligomeric or polymeric triaryl- and substituted triarylphosphine compounds which are non-digestible and non-absorbable by animals are disclosed. These compounds act as antioxidants by inhibiting the buildup of hydroperoxides of unsaturated fatty acids, e.g., in foods.Type: GrantFiled: February 21, 1978Date of Patent: June 24, 1980Assignee: The Procter & Gamble CompanyInventor: Joel I. Shulman
-
Patent number: 4207266Abstract: This invention relates to a novel process for the direct trifluoromethylation of aromatic compounds via carbon tetrachloride and hydrogen fluoride in the presence of strong Bronsted or Lewis acids which give an acidic reaction (increase in concentration of H.sub.2 F.sup.+ ions) in anhydrous hydrogen fluoride.Type: GrantFiled: March 9, 1979Date of Patent: June 10, 1980Assignee: Rohm and Haas CompanyInventor: Thomas R. Opie
-
Patent number: RE32826Abstract: A cationic lipophilic complex of technetium is disclosed wherein all of the coordination positions of the technetium atom are filled with a neutral donor atom having a pair of electrons available for forming a coordinate bond with technetium. The donor atoms are provided by target-seeking ligands or salts thereof, said ligands having the following structure of one of formulas I, II or III. Such complexes are useful for imaging heart and hepatobiliary tissues.Type: GrantFiled: February 6, 1987Date of Patent: January 10, 1989Assignee: E. I Du Pont de Nemours and CompanyInventor: Karen E. Linder