Amino Nitrogen And A Ring Bonded Directly To The Same Ring, And Any Other Amino Nitrogen In The Compound Is Bonded Directly To One Of The Rings Patents (Class 564/307)
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Patent number: 4918230Abstract: 4-Bromoaniline hydrobromides of formula I ##STR1## wherein R.sup.1 and R.sup.2 are each independently of the other C.sub.1 -C.sub.10 alkyl or C.sub.3 -C.sub.7 cycloalkyl, are prepared by brominating an aniline hydrohalide of formula II ##STR2## wherein X is chlorine or bromine and R.sup.1 and R.sup.2 are as defined above, in the presence of an inert organic solvent.Type: GrantFiled: June 14, 1988Date of Patent: April 17, 1990Assignee: Ciba-Geigy CorporationInventor: Robert Hassig
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Patent number: 4908289Abstract: Novel squarylium compounds, a process for the production thereof as well as to a photoreceptor for electrophotography containing the squarylium compound are disclosed, said squarylium compounds being represented by formula (I) or (II): ##STR1## wherein X is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a hydroxyl group, an alkoxy group having 1 to 4 carbon atoms, or a halogen atom; Y is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms a hydroxyl group or an alkoxyl group having 1 to 4 carbon atoms.Type: GrantFiled: December 17, 1986Date of Patent: March 13, 1990Assignee: Fuji Xerox Co., Ltd.Inventors: Hiroyuki Tanaka, Seki Kin, Lyong S. Pu
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Patent number: 4892974Abstract: This invention relates to a process for producing mono-ortho-tert-butyl-aniline in high security selectivity and at high conversion using a silica-containing catalyst. The reaction is carried out using a fixed bed reactor. Di-tert-butyl derivatives are avoided by maintaining preselected mole ratios of isobutylene to aniline, preselected temperatures and preselected reaction times.Type: GrantFiled: March 10, 1988Date of Patent: January 9, 1990Assignee: Air Products and Chemicals, Inc.Inventors: William F. Burgoyne, Jr., Dale D. Dixon
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Patent number: 4876377Abstract: This invention pertains to an improved process for the alkylation of aromatic amines. The improvement resides in the use with particular aromatic amines and olefins a catalyst which is a highly acidic partially dealuminated zeolite having an increased silica to alumina molar ratio over the original zeolite and an acidity factor of at least 0.3. The partially dealuminated zeolites are preferably exchanged with hydrogen or rare earth metal and are particularly effective for producing an alkylated aromatic amine where the alkyl group is ortho to the amine. The highly acidic partially dealuminated H-mordenite and partially dealuminated HY faujasite are very effective for the alkylation of aniline with propylene.Type: GrantFiled: March 22, 1988Date of Patent: October 24, 1989Assignee: Air Products and Chemicals, Inc.Inventors: Rakesh Agrawal, Steven R. Auvil, Michel Deeba
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Patent number: 4853397Abstract: Insecticidal and acaricidal novel substituted furazans of the formula ##STR1## n which R.sup.1 and R.sup.2 are identical or different and represent hydrogen, halogen, alkyl, alkoxy, alkylthio, halogenoalkyl, halogenoalkoxy, halogenoalkylthio or optionally substituted aryloxy, orR.sup.1 and R.sup.2 together represent an optionally substituted alkylene radical which is interrupted by 1 or 2 oxygen atoms or is bonded to the phenyl radical via 1 or 2 oxygen atoms,R.sup.3 and R.sup.4 are identical or different and represent hydrogen, halogen, alkyl, alkoxy, halogenoalkyl or halogenoalkoxy,R.sup.5 represents optionally substituted cycloalkyl, andX represents oxygen or sulphur.Intermediates of the formula ##STR2## in which B is --NH.sub.2, --NO.sub.2 or --NCX,R.sup.3 and R.sup.4 are identical or different and represent hydrogen, halogen, alkyl, alkoxy, halogenoalkyl or halogenoalkoxy,R.sup.Type: GrantFiled: June 25, 1987Date of Patent: August 1, 1989Assignee: Bayer AktiengesellschaftInventors: Wilhelm Sirrenberg, Albrecht Marhold, Robert Steffens
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Patent number: 4847414Abstract: 2'-substituted-spiro[benzofuran-2(3H),1'-cyclohexanes] and methods of preparing same are described. On the aromatic portion of the benzofuran ring, there may be a substituent or substituents including halogen, amino, lower-alkyl-substituted amino, lower alkyl, lower alkoxy, hydroxy and nitro. The substituents at the 2-position of the cyclohexane ring are --(CH.sub.2).sub.n NR.sup.1 R.sup.2 where n is 0, 1 or 2 and R.sup.1 and R.sup.2 are each independently hydrogen and alkyl of 1-3 carbons. These compounds are useful as antidepressants and analgesics.Various other compounds which are useful as intermediates for preparing the aforementioned compounds and methods for preparing same are also described.Type: GrantFiled: March 2, 1983Date of Patent: July 11, 1989Assignee: Hoechst-Roussel Pharmaceuticals, Inc.Inventors: Edward J. Glamkowski, Michael C. Jones
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Patent number: 4845129Abstract: The invention discloses certain diaryl substituted cyclopentane and cyclopentene derivatives useful as PAF inhibitors, pharmaceutical compositions containing said compounds as an active ingredient thereof and a method of using such compositions for inhibiting PAF-induced blood platelet aggregation, PAF-mediated broncho-constriction and extravasation, PAF-induced hypotension, PAF-induced ischemic bowel disease and PAF-mediated, endotoxin induced lug injury.Type: GrantFiled: March 14, 1988Date of Patent: July 4, 1989Assignee: Sandoz Pharm. Corp.Inventors: Robert C. Anderson, William J. Houlihan, Howard C. Smith, Edwin B. Villhauer
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Patent number: 4845291Abstract: This invention relates to a class of alkenylated toluenediamines and phenylenediamines having at least one alkenyl group ortho to an amine group. More particularly the aryldiamines are represented by the formula: ##STR1## wherein R is hydrogen or C.sub.1 -C.sub.3 aliphatic, R.sub.1 is hydrogen, R.sub.2 is C.sub.2 -C.sub.4, aliphatic and R.sub.1 and R.sub.2 form an alkylene radical (CH.sub.2).sub.y wherein y=3 or 4, and x is one or two.The above described alkenylated aryldiamine, hereafter referred to as diamino-.beta.-alkyl styrenes, have been found to be well suited as antioxidants and as tri-and tetra functional chain extenders in forming polyurethane/urea elastomers systems and for providing pendant unsaturation for post curing and polymerization.Type: GrantFiled: December 24, 1986Date of Patent: July 4, 1989Assignee: Air Products and Chemicals, Inc.Inventors: William F. Burgoyne, Jr., Dale D. Dixon
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Patent number: 4833053Abstract: Novel squaric acid methine dyes are provided. These dyes are useful in forming photoconductive layers for components utilized in electrographic imaging processes.Type: GrantFiled: September 12, 1988Date of Patent: May 23, 1989Assignee: Ricoh CorporationInventor: Herbert K. Wurster
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Patent number: 4792628Abstract: Indane derivatives and their salts represented by the general formula (1), ##STR1## wherein R.sup.1 is an amino group which may have lower alkyl groups as the substituents, a hydroxylimino group, an alkanoylamino group having 1 to 10 carbon atoms which may have halogen atoms as the substituents, a lower alkylsulfonylamino group, a phenylsulfonylamino group which may have lower alkyl groups as the substituents on the phenyl ring, a benzoylamino group having lower alkyl groups as the substituents on the phenyl ring, and a phenyl-lower alkylamino group having a hydroxyl groups or a lower alkyl groups as the substituents on the phenyl ring, R.sup.2 is a hydrogen atom, a lower alkyl group, a halogen atom, a nitro group, an amino group, an amino-lower alkyl group, a lower alkanoylamino group, a lower alkanoylamino-lower alkyl group which may have halogen atoms as the substituents, a lower alkylthio group, a 1-piperidinesulfonyl group, or a lower alkenyl group; R.sup.Type: GrantFiled: April 16, 1987Date of Patent: December 20, 1988Assignee: Otsuka Pharmaceutical Co., Ltd.Inventors: Yasuo Oshiro, Hiraki Ueda, Kazuyuki Nakagawa
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Patent number: 4782184Abstract: A method is disclosed for making amino-substituted ethynlated biphenyl compounds, which includes selectively nitrating symmetrically substituted biphenyl compounds, reacting the resulting nitro-substituted aromatic compound with a copper acetylide to replace the iodo substituents with ethynyl groups, and then reacting the ethynylated, nitro-substituted aromatic compound with hydrogen in the gas phase to reduce the nitro groups to amino groups. The preferred nitrating agent is nitronium trifluoromethanesulfonate, made by reaction of anhydrous nitric acid with trifluoromethanesulfonic anhydride in an anhydrous solvent.Type: GrantFiled: December 19, 1984Date of Patent: November 1, 1988Assignee: Hughes Aircraft CompanyInventors: Kreisler S. Y. Lau, Thomas K. Dougherty
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Patent number: 4752650Abstract: Novel squarylium compounds, a process for the production thereof as well as to a photoreceptor for electrophotography containing the squarylium compound are disclosed, said squarylium compounds being represented by formula (I) or (II): ##STR1## wherein X is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a hydroxyl group, an alkoxy group having 1 to 4 carbon atoms, or a halogen atom; Y is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a hydroxyl group or an alkoxyl group having 1 to 4 carbon atoms.Type: GrantFiled: August 31, 1987Date of Patent: June 21, 1988Assignee: Fuji Xerox Co., Ltd.Inventors: Hiroyuki Tanaka, Seki Kin, Lyong S. Pu
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Patent number: 4751327Abstract: Disclosed are unsymmetrical squaraine compounds of the following formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently selected from the group consisting of alkyl, aryl, heterocyclic, benzyl, and halobenzyl; and X.sub.1, X.sub.2 and X.sub.3 are independently selected from the group consisting of hydrogen, alkyl, halogen, carboxy, and hydroxy; and photoresponsive imaging members having incorporated therein the aforementioned squaraine compounds.Type: GrantFiled: October 2, 1986Date of Patent: June 14, 1988Assignee: Xerox CorporationInventors: Peter M. Kazmaier, Richard A. Burt, Giuseppa Baranyi
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Patent number: 4751330Abstract: (Hydrocarbylthio)aromatic amines are prepared by reacting an aromatic amine, such as an aminobenzene, with a hydrocarbyl disulfide, such as an alkyl disulfide, in the presence of a metal or metal halide catalyst and iodine as a promoter.Type: GrantFiled: March 17, 1987Date of Patent: June 14, 1988Assignee: Ethyl CorporationInventor: Robert L. Davis
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Patent number: 4746756Abstract: Disclosed are fluorinated squaraine compounds of the following formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are independently selected from the group consisting of alkyl, aryl, and heterocyclic substituents.Type: GrantFiled: August 21, 1986Date of Patent: May 24, 1988Assignee: Xerox CorporationInventors: Peter M. Kazmaier, Giuseppa Baranyi, Rafik O. Loutfy
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Patent number: 4740620Abstract: This invention relates to a process for producing ring alkylated aromatic amines. In the process an aromatic amine is reacted with an olefin using an acidic crystalline molecular sieve as a catalyst. Under the conditions of the process the catalyst is extremely active and with amines that are capable of alkylation at the ortho and para positions, high selectivity to the ortho alkylated isomer can be achieved.Type: GrantFiled: November 8, 1985Date of Patent: April 26, 1988Assignee: Air Products and Chemicals, Inc.Inventors: Dale D. Dixon, William F. Burgoyne, Jr.
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Patent number: 4717541Abstract: A product having corrosion inhibiting properties consisting essentially of the reaction product of a triflouroethanol with a cyclohexylamine or with a mixture of cyclohexylamine and a dicyclohexylamine; a composition having corrosion inhibiting properties consisting essentially of a carrier liquid and disposed therein the reaction product of a triflouroethanol with a cyclohexylamine or with a mixture of a cyclohexylamine and a dicyclohexylamine; a combination of a solid body carrying thereon a product having corrosion inhibiting properties consisting essentially of the reaction product of a triflouroethanol with a cyclohexylamine or with a mixture of a cyclohexylamine and a dicyclohexylamine; and a process for inhibiting corrosion of metal surface by contacting the same with the reaction product of a triflouroethanol with a cyclohexylamine or with a mixture of a cyclohexylamine and a dicyclohexylamine.Type: GrantFiled: February 11, 1987Date of Patent: January 5, 1988Inventor: Maurice S. Baseman
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Patent number: 4714778Abstract: This invention relates to a class of alkenylated toluenediamines having at least one alkenyl group ortho to an amine group. More particularly the toluenediamines are represented by the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are hydrogen, C.sub.1-3 aliphatic, phenyl, halogen or alkoxy radicals, or R.sub.2 and R.sub.4 or R.sub.5 are bridged via an alkylene radical --(CH.sub.2).sub.y -- wherein y=2 to 5, and x is one or two provided that in said formula at least one of R.sub.1, R.sub.2, R.sub.3, R.sub.4 or R.sub.5 is C.sub.1 or greater.The above described alkenylated toluenediamines have been found to be well suited as antioxidants and as tri- and tetra functional chain extenders in forming polyurethane/urea elastomers systems and for providing pendant unsaturation for post curing and polymerization.Type: GrantFiled: March 7, 1986Date of Patent: December 22, 1987Assignee: Air Products and Chemicals, Inc.Inventors: William F. Burgoyne, Jr., Dale D. Dixon
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Patent number: 4707427Abstract: Novel squarylium compounds, a process for the production thereof as well as to a photoreceptor for electrophotography containing the squarylium compound are disclosed, said squarylium compounds being represented by formula (I): ##STR1## wherein R is a straight-chain alkyl group having 2 or more carbon atoms or --C.sub.2 H.sub.4 X, wherein X is a hydroxyl group, a halogen atom or the group --OR.sub.1 wherein R.sub.1 is an alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted phenyl group.Type: GrantFiled: December 29, 1986Date of Patent: November 17, 1987Assignee: Fuji Xerox Co., Ltd.Inventors: Hiroyuki Tanaka, Seki Kin, Lyong S. Pu
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Patent number: 4700001Abstract: Novel squarylium compounds, a process for the production thereof as well as to a photoreceptor for electrophotography containing the squarylium compound are disclosed, said squarylium compounds being represented by formula (I): ##STR1## wherein R is a straight-chain alkyl group having 2 or more carbon atoms or --C.sub.2 H.sub.4 X, wherein X is a hydroxyl group, a halogen atom or the group --OR.sub.1 wherein R.sub.1 is an alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted phenyl group.Type: GrantFiled: December 17, 1984Date of Patent: October 13, 1987Assignee: Fuji Xerox Co., Ltd.Inventors: Hiroyuki Tanaka, Seki Kin, Lyong S. Pu
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Patent number: 4670598Abstract: (Hydrocarbylthio)aromatic polyamines are prepared by reacting an aromatic polyamine, such as a diaminobenzene, with a hydrocarbyl disulfide, such as an alkyl disulfide, in the presence of an iodide or bromide of a metal other than an alkali metal as a catalyst.Type: GrantFiled: November 8, 1985Date of Patent: June 2, 1987Assignee: Ethyl CorporationInventor: Robert L. Davis
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Patent number: 4670597Abstract: (Hydrocarbylthio)aromatic amines are prepared by reacting an aromatic monoamine, such as an aminobenzene, with a hydrocarbyl disulfide, such as an alkyl disulfide, in the presence of hydrogen iodide, ammonium iodide, or cuprous iodide.Type: GrantFiled: November 8, 1985Date of Patent: June 2, 1987Assignee: Ethyl CorporationInventors: Paul F. Ranken, Robert L. Davis
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Patent number: 4664845Abstract: Compositions, comprised of a dinitrophenol in an aromatic hydrocarbon solvent, which compositions further comprise a sufficient amount of a phenylenediamine such that a greater amount of dinitrophenol is in solution than would be present in solution if such phenylenediamine were not present, exhibit unexpectedly desirable low temperature stability, and may be diluted with additional solvent to be employed as polymerization inhibitors for vinyl aromatic compounds.Type: GrantFiled: January 19, 1986Date of Patent: May 12, 1987Assignee: Uniroyal Chemical Company, Inc.Inventors: Elmar H. Jancis, Paul E. Stott
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Patent number: 4665231Abstract: A process for forming finely divided squaraine particles is disclosed comprising dissolving squaraine material in an organic base selected from the group consisting of primary organic amines and secondary organic amines, neutralizing the organic base with an acid selected from the group consisting of organic acids and inorganic acids thereby precipitating the squaraine material as finely divided particles in a liquid medium, and separating the finely divided particles from the liquid medium.Type: GrantFiled: May 2, 1986Date of Patent: May 12, 1987Assignee: Xerox CorporationInventors: John F. Yanus, William W. Limburg
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Patent number: 4644082Abstract: Disclosed are the use of novel squaraine compositions selected from the group consisting of bis(2-fluoro-4-methylbenzylaminophenyl)squaraine, bis(2-fluoro-4-methyl-p-chlorobenzylaminophenyl)squaraine, bis(2-fluoro-4-methyl-p-fluorobenzylaminophenyl)squaraine, and bis(2-fluoro-4-methyl-m-chlorobenzylaminophenyl)squaraine, in photoresponsive devices, particularly layered photoresponsive devices which are sensitive to infrared and/or visible illumination.Type: GrantFiled: December 17, 1984Date of Patent: February 17, 1987Assignee: Xerox CorporationInventors: Kock-Yee Law, Frank C. Bailey
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Patent number: 4626485Abstract: Novel squarium compounds which have a flat photosensitivity in the wide range from visible ray region to the near infrared ray region as a charge generator and which can be prepared by reacting squaric acid and an aniline derivative, and electrophotographic photoreceptors containing the squarium compounds are disclosed.Type: GrantFiled: May 13, 1985Date of Patent: December 2, 1986Assignee: Fuji Xerox Co., Ltd.Inventors: Seki Kin, Hiroyuki Tanaka, Satoshi Saeki, Kaoru Torikoshi, Lyong S. Pu
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Patent number: 4624904Abstract: Disclosed are unsymmetrical squaraine compounds of the following formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently selected from the group consisting of alkyl, aryl heterocyclic, benzyl, and halobenzyl; and X.sub.1, X.sub.2 and X.sub.3 are independently selected from the group consisting of hydrogen, alkyl, halogen, carboxy, and hydroxy; and photoresponsive imaging members having incorporated therein the aforementioned squaraine compounds.Type: GrantFiled: June 28, 1985Date of Patent: November 25, 1986Assignee: Xerox CorporationInventors: Peter M. Kazmaier, Richard A. Burt, Giuseppa Baranyi
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Patent number: 4621038Abstract: Disclosed are fluorinated squaraine compounds of the following formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are independently selected from the group consisting of alkyl, aryl, and heterocyclic substituents.Type: GrantFiled: June 24, 1985Date of Patent: November 4, 1986Assignee: Xerox CorporationInventors: Peter M. Kazmaier, Giuseppa Baranyi, Rafik O. Loutfy
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Patent number: 4607124Abstract: An improved process for the preparation of mixed squaraine compositions which comprises reacting squaric acid, an aromatic amine, and a fluoroaniline, in the presence of an aliphatic alcohol, and an optional azeotropic substance.Type: GrantFiled: October 30, 1985Date of Patent: August 19, 1986Assignee: Xerox CorporationInventors: Peter M. Kazmaier, Giuseppa Baranyi, Cheng-Kuo Hsiao, Richard A. Burt
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Patent number: 4596891Abstract: There is disclosed diamines of the formula ##STR1## wherein R.sub.6 is H, Cl, or CH.sub.3 ; andR.sub.8 " is H, Cl, or CH.sub.3, with the provisos that(a) if R.sub.8 " is H or CH.sub.3, R.sub.7 " is CH.sub.3 ; and(b) if R.sub.8 " is Cl, R.sub.7 " is F; and(c) if R.sub.6 and R.sub.8 " are both H, R.sub.7 " is any of CH.sub.3, F, CF.sub.3, trifluoromethoxy, trifluoromethylsulfonyl, cyclohexyl, C.sub.2 -C.sub.10 alkyl, p-chlorophenoxy or p-chlorophenyl alkyl having 7 or 8 carbon atoms. The diamines have algicidal activity.Type: GrantFiled: November 20, 1980Date of Patent: June 24, 1986Assignee: Duphar International Research B.V.Inventors: Jaap van Gilse, Gerard B. Paerels
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Patent number: 4594453Abstract: (Hydrocarbylthio)aromatic amines are prepared by reacting an aromatic amine, such as an aminobenzene, with a hydrocarbyl disulfide, such as an alkyl disulfide. The reaction is preferably conducted in the presence of a Lewis acid catalyst, such as aluminum chloride.Type: GrantFiled: June 11, 1984Date of Patent: June 10, 1986Assignee: Ethyl CorporationInventors: Paul F. Ranken, Bonnie G. McKinnie
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Patent number: 4587248Abstract: 4-alkyl-thiophenyl-ethanolamines are disclosed, which are compounds having a therapeutical activity against blood-platelet aggregation, and against lipemia and improving the cerebral circulation, said ethanolamines having the general formula: ##STR1## wherein R and R.sub.1 are alkyl substituents and R.sub.2 is a substituent having an amine character. Due to the presence of two asymmetry centers in their molecule, the compounds concerned can be prepared in the "threo" and the "erythro" configuration: mixtures of the "threo" and the "erythro" forms have also proven effective.Type: GrantFiled: May 27, 1982Date of Patent: May 6, 1986Inventors: Giorgio Cantarelli, Giampaolo Picciola, Franco Ravenna, Mario Riva
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Patent number: 4585895Abstract: Disclosed is an improved process for the preparation of mixed squaraine compositions which comprises reacting a dialkyl squarate, a dialkyl aniline, and a dialkylhaloaniline in the presence of an aliphatic alcohol and an acid catalyst.Type: GrantFiled: February 20, 1985Date of Patent: April 29, 1986Assignee: Xerox CorporationInventor: Kock-Yee Law
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Patent number: 4585884Abstract: Disclosed are novel silylated hydroxyl squaraine compositions, novel deuterated hydroxyl squaraine derivatives, and processes for the preparation thereof. More specifically, there is disclosed a process for the preparation of photoconductive hydroxyl squaraine pigment compositions useful as visible and near infrared photoconductor materials comprising (1) effecting functionalization of the hydroxyl squaraine in an organic solvent system wherein the hydroxyl groups therein are silylated, and (2) subjecting the resulting silylated products to hydrolysis enabling conversion to purified squaraine compositions, or conversion to deuterated hydroxyl squaraine derivatives. The hydroxyl squaraine compositions obtained are useful, for example, as photogenerating pigments in layered imaging members.Type: GrantFiled: May 23, 1984Date of Patent: April 29, 1986Assignee: Xerox CorporationInventors: John W. P. Lin, Lesley P. Dudek
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Patent number: 4552822Abstract: Photoresponsive devices, including layered photoresponsive devices comprised of a photoconductive layer of squaraine compositions of the following formula: ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 are independently selected from the group consisting of alkyl substitutents and aryl substituents.Type: GrantFiled: December 5, 1983Date of Patent: November 12, 1985Assignee: Xerox CorporationInventors: Peter M. Kazmaier, Guiseppa Baranyi, Cheng-kuo Hsiao, Richard A. Burt
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Patent number: 4551264Abstract: New polyhalogenoaromatic compounds of Formula I ##STR1## wherein Y and Z are each independently alkyl, alkoxy or alkanoyl each of 1 to 12 C atoms, --COOR.sup.1, --O--CO--R.sup.1, CN, NO.sub.2, NH.sub.2 or OH;Q is one or two identical or different radicals selected from Ph, Cy, 1,4-bicyclo[2,2,2]octylene or 1,3-dioxane-2,5-diyl;X.sup.1 to X.sup.4 are each independently H, F, Cl or Br;R.sup.1 is alkyl of 1 to 4 C atoms, Ph--R.sup.2 or Cy--R.sup.2 ;R.sup.2 is alkyl or alkoxy each of 1-12 C atoms or CN;Ph is 1,4-phenylene; and Cy is 1,4-cyclohexylene,can be used as components of liquid-crystal dielectrics.Type: GrantFiled: March 14, 1983Date of Patent: November 5, 1985Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Rudolf Eidenschink, Michael Romer, Georg Weber
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Patent number: 4525592Abstract: This invention relates to an improved process for the preparation of squaraine compositions which comprises reacting a dialkyl squarate, with an aniline, in the presence of an acid and an aliphatic alcohol, at a temperature of from about 60 degrees Centigrade to 160 degrees Centigrade.Type: GrantFiled: December 5, 1983Date of Patent: June 25, 1985Assignee: Xerox CorporationInventors: Kock-Yee Law, Frank C. Bailey
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Patent number: 4524220Abstract: This invention is generally directed to an improved process for the preparation of squaraine compositions which comprises the reaction of squaric acid with an aromatic aniline in the presence of an aliphatic amine, wherein there results a product of reduced dark decay properties and increased charge acceptance values as compared to squaraine compositions prepared from the squaric acid process in the absence of an aliphatic amine.Type: GrantFiled: March 12, 1984Date of Patent: June 18, 1985Assignee: Xerox CorporationInventor: Kock-Yee Law
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Patent number: 4524219Abstract: This invention relates to an improved process for the preparation of squaraine compositions which comprises reacting an alkyl squarate, with an aniline, in the presence of an optional acid catalyst and an aliphatic alcohol.Type: GrantFiled: February 3, 1984Date of Patent: June 18, 1985Assignee: Xerox CorporationInventor: Kock-Yee Law
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Patent number: 4524218Abstract: Disclosed is an improved process for the preparation of squaraine compositions which comprises reacting squaric acid, an aromatic amine, and a composition selected from the group consisting of phenols and phenol squaraines, in the presence of an aliphatic alcohol, and an optional azeotropic substance.Type: GrantFiled: January 11, 1984Date of Patent: June 18, 1985Assignee: Xerox CorporationInventors: Giuseppa Baranyi, Peter M. Kazmaier, Cheng-Kuo Hsiao, Richard A. Burt
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Patent number: 4523035Abstract: A process for synthesizing a squariane composition comprising forming a mixture comprising squaric acid, a long chain primary alcohol and a tertiary amine and heating the mixture in vacuo below the boiling points of the primary alcohol and the tertiary amine to form the squariane composition.Type: GrantFiled: December 5, 1983Date of Patent: June 11, 1985Assignee: Xerox CorporationInventor: John F. Yanus
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Patent number: 4521621Abstract: An unsymmetrical squaraine composition, process for synthesizing the unsymmetrical squaraine composition, devices containing the unsymmetrical squaraine composition, and methods of using the devices. The process for synthesizing the unsymmetrical squaraine composition comprises forming a mixture comprising squaric acid, a long chain primary alcohol, a first tertiary amine, and a second tertiary aromatic amine different from the first tertiary aromatic amine, and heating the mixture in vacuo below the boiling points of the primary alcohol, the first tertiary amine and the second tertiary aromatic amine to form an unsymmetrical squaraine composition. The novel unsymmetrical squaraine composition synthesized by this process may be used in electrostatographic imaging members comprising a supporting substrate and a photoconductive layer comprising the novel unsymmetrical squaraine composition. These electrostatographic imaging members may be utilized in an electrostatographic imaging processes.Type: GrantFiled: December 5, 1983Date of Patent: June 4, 1985Assignee: Xerox CorporationInventors: John F. Yanus, William W. Limburg
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Patent number: 4503248Abstract: A class of polyamides comprising recurring units having substituted-quaterphenylene radicals is disclosed. The polymers comprise recurring units of the formula ##STR1## wherein each of A and B is a divalent radical, except that B can represent a single bond; R and R.sup.1 are each hydrogen, alkyl, aryl, alkaryl or aralkyl; and c is zero or one; and wherein, when c is one, at least one of A and B is a substituted-quaterphenylene radical having the formula ##STR2## where each U is a substituent other than hydrogen, each W is hydrogen or a substituent other than hydrogen, each p is an integer from 1 to 3, each X is hydrogen or a substituent other than hydrogen and each r is an integer from 1 to 4, the U, W.sub.p and X.sub.r substitution being sufficient to provide the radical with a non-coplanar molecular configuration; and wherein, when c is zero, A is a substituted-quaterphenylene radical as aforedescribed.Type: GrantFiled: May 27, 1983Date of Patent: March 5, 1985Assignee: Polaroid CorporationInventors: Russell A. Gaudiana, Palaiyur S. Kalyanaraman
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Patent number: 4473586Abstract: Disclosed herein are 1-aminoalkyl-3,4-dihydronaphthalenes represented by the formula ##STR1## wherein n is 1 or 2; R, R.sub.1, and R.sub.2 are independently selected from hydrogen, hydroxy, loweralkoxy of 1 to 3 carbon atoms, loweralkenyloxy of 1 to 3 carbon atoms, thiomethyl, halo, or ##STR2## wherein R.sub.5 and R.sub.6 are independently selected from hydrogen, loweracyl of 1 to 4 carbon atoms or sulfonyl of the formula ##STR3## wherein R.sub.7 is loweralkyl of 1 to 4 carbon atoms; or R and R.sub.1, or R.sub.1 and R.sub.2 can be taken together to form a methylenedioxy or ethylenedioxy bridge; with the proviso that at least one of R, R.sub.1 or R.sub.2 must be other than hydrogen; and R.sub.3 and R.sub.4 are independently selected from hydrogen; loweralkyl of 1 to 4 carbon atoms; halo-substituted loweralkyl of 1 to 4 carbon atoms; arylalkyl of the formula ##STR4## wherein m is 0, 1 or 2, p is 0 or 1, R.sub.8 is hydrogen or loweralkyl of 1 to 4 carbon atoms and R.sub.9 and R.sub.Type: GrantFiled: May 3, 1982Date of Patent: September 25, 1984Assignee: Abbott LaboratoriesInventors: John F. Debernardis, David L. Arendsen, Martin Winn
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Patent number: 4436936Abstract: Compounds having the formula I ##STR1## as well as salts or metal salt complexes thereof, in which formula I n, R.sub.1, R.sub.2 and Z have the meanings given in claim 1, can be prepared under mild reaction conditions by reacting 1.0 mole of an aromatic amine having the formula II ##STR2## with up to three moles of an alkylating agent (III) capable of introducing a residue Z into the benzene ring of an amine (II) at a position ortho or para to the NH.sub.2 group, the reaction being effected at elevated temperature in the presence of an acid catalyst in an aqueous acid medium, containing at least 30% by weight of water, based on the acid, and optionally converting compounds (I) into salts or metal salt complexes. The compounds (I) so produced are useful in the production of intermediates for dyestuffs, additives for plastics, rubbers, oils, etc., and in the production of biologically active compounds.Type: GrantFiled: June 10, 1982Date of Patent: March 13, 1984Assignee: Ciba-Geigy CorporationInventor: Frederick H. Howell
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Patent number: 4421763Abstract: Derivatives of 2-substituted-cyclohexane-1,3-diones possessing antihypertensive activity.Type: GrantFiled: March 26, 1982Date of Patent: December 20, 1983Assignee: Eisai Co., Ltd.Inventors: Sachiyuki Hamano, Shinichi Kitamura, Toshiji Igarashi, Yoshikage Nakajima
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Patent number: 4366172Abstract: Novel 4-aminocyclohexanols are formulated into pharmaceutical compositions for analgetic purposes in mammals in need of said treatment.Type: GrantFiled: September 29, 1977Date of Patent: December 28, 1982Assignee: The Upjohn CompanyInventor: Daniel Lednicer
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Patent number: 4365093Abstract: Novel ethynylbenzene compounds and their derivatives which are useful for the treatment for the relief of inflammation, pain and fever.Type: GrantFiled: November 23, 1976Date of Patent: December 21, 1982Assignee: William H. Rorer, Inc.Inventor: Julius Diamond
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Patent number: 4348335Abstract: Polynitrated diaryl compounds of the formula given in the description are reduced with 1-2 mols of sulphides, or compounds which donate sulphide ions, per mol of nitro group in the presence of 0.5-10 mols of ammonia per mol of starting compound at 30.degree.-110.degree. C. to give nitroamino-diaryl compounds, for example 4,4'-dinitro-dibenzyl-2,2'-disulphonic acid is reduced to 4-nitro-4'-amino-stilbene-2,2'-disulphonic acid.Type: GrantFiled: April 14, 1980Date of Patent: September 7, 1982Assignee: Bayer AktiengesellschaftInventors: Karl Linhart, Dieter Pawellek, Harald Gleinig
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Patent number: 4341548Abstract: There is disclosed N-(2-cyclohexylphenyl)-N', N'-diethyl-ethylene diamine. The compound is useful as an algicide. Compositions containing the compound and methods of use of the compositions are disclosed also.Type: GrantFiled: June 5, 1981Date of Patent: July 27, 1982Assignee: Duphar International Research B.V.Inventors: Jaap van Gilse, Gerard B. Paerels