Plural Hetero Rings Patents (Class 549/252)
-
Publication number: 20150057397Abstract: A process of transesterifying biobased epoxidized vegetable oils with a dialkyl carbonate produces mixtures of epoxidized fatty acid cyclic glycerin carbonate esters and epoxidized fatty acid alkyl esters.Type: ApplicationFiled: August 23, 2013Publication date: February 26, 2015Applicant: Ferro CorporationInventors: John D. Bradshaw, George F. Schaefer, Larry J. Baldwin, Ronald J. Raleigh, JR., Brenda Hollo
-
Publication number: 20140274832Abstract: This disclosed invention relates to a maleinated ester derivative derived from an unsaturated linear aliphatic carboxylic acid methyl ester, maleic anhydride, and a monohydric alcohol. Lubricants and functional fluids containing the maleinated esters are disclosed.Type: ApplicationFiled: March 10, 2014Publication date: September 18, 2014Applicant: Elevance Renewable Sciences, Inc.Inventors: Jonathan Brekan, Stephen A. DiBiase, Zhe Wang, Amy Dalby, Paul Bertin
-
Patent number: 8790424Abstract: A copolymer obtainable by free-radical copolymerization of (i) monomer units of the structure M1 in which the variables are each hydrogen, alkyl groups, carboxyl groups or carboxyl derivative moieties, and (ii) monomer units of the structure M2 in which R5 is the radical of a carboxylic ester of the formula -A-CO—O—R10 where A is an alkylene group and R10 is a hydrocarbyl radical, and in which R6, R7 and R8 are each hydrogen or alkyl radicals, and subsequent polymer-analogous reaction of the product formed with a long-chain hydrocarbyl alcohol. This copolymer is suitable for improving the cold flow properties of middle distillate fuels, especially those which consist of or comprise biofuel oils.Type: GrantFiled: March 28, 2012Date of Patent: July 29, 2014Assignee: BASF SEInventors: Ivette Garcia Castro, Uwe Rebholz, Irene Troetsch-Schaller, Markus Brym, Jan Strittmatter, Michael Schroers
-
Patent number: 8563751Abstract: Disclosed is a method for manufacturing a trimellitic anhydride aryl ester in an efficient, high-yielding manner, wherein carboxylic acid lithium salt is used as a catalyst when a carboxylic acid aryl ester and trimellitic anhydride are caused to undergo an ester exchange reaction to manufacture a trimellitic anhydride aryl ester.Type: GrantFiled: December 22, 2009Date of Patent: October 22, 2013Assignee: Honshu Chemical Industry Co., Ltd.Inventors: Tomoya Yamamoto, Seiji Kawano, Kouji Muragaki
-
Publication number: 20130260020Abstract: The present invention is directed to a binder for a lithium ion battery electrode, comprising a polyimide precursor having a tetracarboxylic acid residue and a diamine residue and/or a polyimide, the polyimide precursor having a residue of a tetracarboxylic dianhydride selected from those represented by the following general formulas (1) and (2) as the tetracarboxylic acid residue, and a residue of a diamine selected from those represented by the following general formulas (3) and (4) as the diamine residue, the content of the acid residue being from 0.90 to 0.95 moles based on 1 mole of the diamine residue.Type: ApplicationFiled: November 28, 2011Publication date: October 3, 2013Applicant: TORAY INDUSTRIES, INC.Inventors: Masao Tomikawa, Tomoyuki Yuba, Natsuko Chayama
-
Patent number: 8460944Abstract: The present disclosure relates to novel bis-maleic anhydrides and to the surprising discovery that bis-maleic anhydride cross-linking agents can be used for preservation/fixation of a cell or tissue sample. Various bis-maleic anhydride cross-linking agent scan be used in methods requiring fixation of a cell or tissue sample. These reagents and methods are especially useful in procedures that require that the fixation agent be removed in order to facilitate analysis with other reagents. The inventive reagents and methods make it easier to reliably assay for various proteins, a nucleic acid and the like using analytical methods such as like immunohistochemistry, fluorescence in situ hybridization, RT-PCR, and the like.Type: GrantFiled: February 21, 2012Date of Patent: June 11, 2013Assignee: Roche Diagnostics Operations, Inc.Inventors: Hans-Peter Josel, Michael Gerg, Rupert Herrmann, Rosa Isabel Saez Diaz
-
Publication number: 20130105316Abstract: Provided is a substrate modification method that enables improvement of reproducibility in measurement with use of capillary electrophoresis. The substrate modification method includes immobilizing, to a substrate surface, at least two types of modification groups selected from three types of modification groups that are a type of a modification group having one functional group, a type of a modification group having two to nine functional groups, and a type of a modification group having ten or more functional groups.Type: ApplicationFiled: October 26, 2012Publication date: May 2, 2013Applicant: ARKRAY, INC.Inventor: ARKRAY, INC.
-
Publication number: 20120247001Abstract: A copolymer obtainable by free-radical copolymerization of (i) monomer units of the structure M1 in which the variables are each hydrogen, alkyl groups, carboxyl groups or carboxyl derivative moieties, and (ii) monomer units of the structure M2 in which R5 is the radical of a carboxylic ester of the formula -A-CO—O—R10 where A is an alkylene group and R10 is a hydrocarbyl radical, and in which R6, R7 and R8 are each hydrogen or alkyl radicals, and subsequent polymer-analogous reaction of the product formed with a long-chain hydrocarbyl alcohol. This copolymer is suitable for improving the cold flow properties of middle distillate fuels, especially those which consist of or comprise biofuel oils.Type: ApplicationFiled: March 28, 2012Publication date: October 4, 2012Applicant: BASF SEInventors: Ivette GARCIA CASTRO, Uwe Rebholz, Irene Trötsch-Schaller, Markus Brym, Jan Strittmatter, Michael Schroers
-
Publication number: 20120149019Abstract: The present disclosure relates to novel bis-maleic anhydrides and to the surprising discovery that bis-maleic anhydride cross-linking agents can be used for preservation/fixation of a cell or tissue sample. Various bis-maleic anhydride cross-linking agent scan be used in methods requiring fixation of a cell or tissue sample. These reagents and methods are especially useful in procedures that require that the fixation agent be removed in order to facilitate analysis with other reagents. The inventive reagents and methods make it easier to reliably assay for various proteins, a nucleic acid and the like using analytical methods such as like immunohistochemistry, fluorescence in situ hybridization, RT-PCR, and the like.Type: ApplicationFiled: February 21, 2012Publication date: June 14, 2012Applicant: ROCHE DIAGNOSTICS OPERATIONS, INC.Inventors: Hans-Peter Josel, Michael Gerg, Rupert Herrmann, Rosa Isabel Saez Diaz
-
Publication number: 20120029215Abstract: Disclosed is a method for manufacturing a trimellitic anhydride aryl ester in an efficient, high-yielding manner, wherein carboxylic acid lithium salt is used as a catalyst when a carboxylic acid aryl ester and trimellitic anhydride are caused to undergo an ester exchange reaction to manufacture a trimellitic anhydride aryl ester.Type: ApplicationFiled: December 22, 2009Publication date: February 2, 2012Applicant: HONSHU CHEMICAL INDUSTRY CO., LTD.Inventors: Tomoya Yamamoto, Seiji Kawano, Kouji Muragaki
-
Publication number: 20090194731Abstract: Oxidized and maleated derivative compositions, such as chemically modified oxidized and maleated tall oil fatty acid compositions, can be prepared and used in a variety of industrial applications, including as emulsifiers, corrosion inhibitors, concrete admixtures, and in reverse flotation mining applications.Type: ApplicationFiled: January 30, 2009Publication date: August 6, 2009Applicant: GEORGIA-PACIFIC CHEMICALS LLCInventors: Phillip W. Hurd, Roger Scott Johnson, John B. Hines, Brett A. Neumann
-
Publication number: 20090012302Abstract: Provided are a method of isolating a nucleic acid from a sample and a solid material for isolating the nucleic acid which can be used for the above method. The method includes contacting the sample with a bifunctional material containing an amino group and a carboxyl group at a first pH to bind the nucleic acid to the bifunctional material, the bifunctional material being positively charged at the first pH; and releasing the nucleic acid at a second pH which is higher than the first pH.Type: ApplicationFiled: September 11, 2008Publication date: January 8, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyu-youn HWANG, Chang-eun YOO
-
Patent number: 7393961Abstract: (Per)haloethers having formula: X-(Rf)L-O—CF2CF2—O—CX1X2—CFX3X4 , ??(I) process for obtaining them and hypofluorites usable in the synthesis of said (per)haloethers.Type: GrantFiled: March 8, 2005Date of Patent: July 1, 2008Assignee: Solvay Solexis S.p.A.Inventors: Giovanni Fontana, Walter Navarrini
-
Patent number: 6936722Abstract: (Per)haloethers having formula: X—(Rf)L—O—CF2CF2—O—CX1X2—CFX3X4??(I), process for obtaining them and hypofluorites usable in the synthesis of said (per)haloethers.Type: GrantFiled: February 4, 2003Date of Patent: August 30, 2005Assignee: Solvay Solexis S.p.A.Inventors: Giovanni Fontana, Walter Navarrini
-
Publication number: 20040019224Abstract: In accordance with the present invention, there are provided thermosetting resin compositions with a reduced propensity to shrink in volume upon cure and methods of use therefor. The compositions of the present invention include compounds having aromatic, rigid-rod like spacer groups between the crosslinkable moieties. As such, these compounds impart a degree of liquid crystal-like character to the thermosetting resin composition which results in lower shrinkage upon cure. This effect follows from the well-known expansion that occurs when liquid crystal-like materials pass from a nematic liquid crystal-like state to an isotropic state. Further provided by the present invention are low shrinkage die attach pastes and methods of use therefor.Type: ApplicationFiled: February 14, 2003Publication date: January 29, 2004Applicant: Henkel Loctite CorporationInventors: Stephen M. Dershem, Kang Yang, Puwei Liu
-
Patent number: 6420401Abstract: Substituted derivatives of 1,2,5-thiadiazolidin-3-one 1,1-dioxides, oligomers containing them, and methods of using them.Type: GrantFiled: August 22, 1997Date of Patent: July 16, 2002Assignee: Wichita State UniversityInventors: William C. Groutas, Rongze Kuang
-
Patent number: 6372943Abstract: Polyenepolycarboxylic acids represented by the following formula (1); (wherein n represents an integer of 0 to 5 and m represents an integer of 1 or 2, provided m is 1 when n is 0), or derivatives thereof at their carboxyl group(s) or their salts. The above compounds originate from natural products and are capable of exhibiting excellent dispersing ability.Type: GrantFiled: October 30, 2000Date of Patent: April 16, 2002Assignee: Fujisawa Pharmaceutical Co., Ltd.Inventors: Shinobu Kasuga, Toshihito Kakiuchi, Ryo Yamanishi, Kazuki Okada
-
Patent number: 6114156Abstract: Polymer encapsulated metal oxide particles are prepared by combining a polyamide acid in a polar aprotic solvent with a metal alkoxide solution. The polymer was imidized and the metal oxide formed simultaneously in a refluxing organic solvent. The resulting polymer-metal oxide is an intimately mixed commingled blend, possessing synergistic properties of both the polymer and preceramic metal oxide. The encapsulated metal oxide particles have multiple uses including, being useful in the production of skin lubricating creams, weather resistant paints, as a filler for paper, making ultraviolet light stable filled printing ink, being extruded into fibers or ribbons, and coatings for fibers used in the production of composite structural panels.Type: GrantFiled: October 31, 1996Date of Patent: September 5, 2000Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Patricia R. McDaniel, Terry L. St. Clair
-
Patent number: 5719295Abstract: A process for making bis(ether anhydrides) employs alkylamines having low melting temperatures thus allowing for novel intermediate process steps for preparing bis(ether anhydrides). The alkylamines have alkyl groups which contain at least three carbon atoms and have boiling temperatures in the range of 48.degree. to 250.degree. C. at atmospheric pressure. As a result of using these amines, liquid alkylamines now can be employed in the imidization process step. The N-alkyl nitrophthalimides prepared from the recovered imidization product according to this invention can now be purified using liquid/liquid extraction or vacuum distillation. The alkyl nitrophthalimides prepared according to this invention provide for displacement reactions which now can be run at a high solids level. Likewise, the exchange reaction can be run at a higher solids level, and thus achieves an efficiency level which is higher than conventional processes.Type: GrantFiled: May 23, 1996Date of Patent: February 17, 1998Assignee: General Electric CompanyInventors: Brent Dellacoletta, Roy Ray Odle, Thomas L. Guggenheim, Ronald A. Greenberg, James P. Barren, Joseph A. King, Sunita Singh Baghel, Deborah A. Haitko, David G. Hawron
-
Patent number: 5536846Abstract: A process for making bis(ether anhydrides) employs alkylamines having low melting temperatures thus allowing for novel intermediate process steps for preparing bis(ether anhydrides). The alkylamines have alkyl groups which contain at least three carbon atoms and have boiling temperatures in the range of 48.degree. to 250.degree. C. at atmospheric pressure. As a result of using these amines, liquid alkylamines now can be employed in the imidization process step. The N-alkyl nitrophthalimides prepared from the recovered imidization product according to this invention can now be purified using liquid/liquid extraction or vacuum distillation. The alkyl nitrophthalimides prepared according to this invention provide for displacement reactions which now can be run at a high solids level. Likewise, the exchange reaction can be run at a higher solids level, and thus achieves an efficiency level which is higher than conventional processes.Type: GrantFiled: May 27, 1994Date of Patent: July 16, 1996Assignee: General Electric CompanyInventors: Brent Dellacoletta, Roy R. Odle, Thomas L. Guggenheim, Ronald A. Greenberg, James P. Barren, Joseph A. King, Sunita S. Baghel, Deborah A. Haitko, David G. Hawron
-
Patent number: 5516918Abstract: There is provided a method for safening herbicides in crop plants by using substituted benzopyran or tetrahydronaphthalene compounds of formula I ##STR1## Further provided are compounds of formula II and compositions comprising a herbicide and an antidotally effective amount of a substituted benzopyran or tetrahydronaphthalene compound of formula I.Type: GrantFiled: January 31, 1995Date of Patent: May 14, 1996Assignee: American Cyanamid CompanyInventors: Gail E. Cary, Nina R. Quinn
-
Patent number: 5464549Abstract: The dispersants are formed by reacting (a) at least one dispersant having at least one primary or secondary amino group and/or at least one hydroxyl group, with (b) at least one polyolefinic compound substituted at each terminal position by a succinic group. Suitable substances for use as reactant (b) include compounds derived from at least one telechelic compound having up to 5000 carbon atoms and at least two terminal methylene groups by reaction with maleic anhydride or the like. The products are deemed to be effective dispersant/detergents for use in fuels and lubricants. In fuels the products are deemed to exhibit the property of inhibiting and/or reducing deposit formation such as intake valve deposits. In crankcase lubricants, the products are deemed to provide desirable viscosity index improving properties.Type: GrantFiled: December 12, 1991Date of Patent: November 7, 1995Assignee: Ethyl CorporationInventor: John F. Sieberth
-
Patent number: 5342965Abstract: Branched fatty substances may be produced by reacting maleic acid anhydride with fatty acids having 16 to 24 carbon atoms and 1, 2, 3, 4, or 5 double bonds, or the esters of such acids, with alcohols containing 1 to 4 carbon atoms, in the presence of at least one rhodium and/or platinum catalyst.Type: GrantFiled: July 29, 1993Date of Patent: August 30, 1994Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Arno Behr, Hans-Peter Handwerk
-
Patent number: 5296607Abstract: In chemical structure of a fulgide type photochromic compound having the following general formula; ##STR1## introduction of electron donative groups into its heteroaromatic structure is effective in improving the long wave length sensitivity without any lowering in its thermal stability. Thanks to such combined functional properties, the products are advantageously used for optical recording media, copying media, printing media, optical filters and display materials.Type: GrantFiled: June 23, 1992Date of Patent: March 22, 1994Assignee: Yamaha CorporationInventors: Akihiko Tomoda, Hisao Suzuki, Akira Kaneko, Hideki Tsuboi
-
Patent number: 5112507Abstract: Novel copolymers of unsaturated acidic reactants and high molecular weight olefins wherein at least 20 percent of the total high molecular weight olefin comprises the alkylvinylidene isomer are useful as dispersants in lubricating oils and fuels and also may be used to prepare polysuccinimides and other post-treated additives useful in lubricating oils and fuels.Type: GrantFiled: September 29, 1989Date of Patent: May 12, 1992Assignee: Chevron Research and Technology CompanyInventor: James J. Harrison
-
Patent number: 5077364Abstract: Polymaleic anhydride having a weight average molecular weight by gel permeation chromatography of between 450 and 800 and a polydispersivity of between 1.0 and 1.15 is produced by polymerizing maleic anhydride, using a peroxide initiator in an amount not greater than 10% by weight of the anhydride, in a dilute solution in o-xylene or a substituted o-xylene.Type: GrantFiled: February 7, 1990Date of Patent: December 31, 1991Assignee: Ciba-Geigy CorporationInventors: Jan Rideout, Duncan J. MacQuarrie
-
Patent number: 5072003Abstract: Compounds are disclosed which are anhydrides containing additional carboxylic acid moieties and dianhydrides of disubstituted maleic anhydride compounds wherein the acid anhydrides and dianhydrides retain their alkene character. These compounds are useful as precursors for polyesters, thermally stable polyamide-imides and polyimides.Type: GrantFiled: June 11, 1990Date of Patent: December 10, 1991Assignee: Amoco CorporationInventors: Steven J. Behrend, Ellis K. Fields
-
Patent number: 5003085Abstract: A process is disclosed for preparation of anhydrides containing additional carboxylic acid moieties and dianhydrides of disubstituted maleic anhydride compounds wherein the acid anhydrides and dianhydrides retain their alkene character. The resulting alkene compounds are useful as precursors for polyesters, thermally stable polyamide-imides and polyimides which are also disclosed, as well as a process for their preparation.Type: GrantFiled: January 8, 1990Date of Patent: March 26, 1991Assignee: Amoco CorporationInventors: Steven J. Behrend, David A. Young, Ellis K. Fields
-
Patent number: 4957704Abstract: Hydrocarbyl polycarboxylates are formed by the reaction of water and a basic neutralizing agent with a hydrocarbyl poly(succinic anhydride) of the formula R(succinic anhydride).sub.x, wherein R is a hydrocarbyl group derived from a crude or refined hydrocarbon wax having a melting point less than 150.degree. F. and x is an integer of from 3 to 8. The hydrocarbyl polycarboxylates serve as corrosion inhibitors in aqueous compositions.Type: GrantFiled: August 9, 1988Date of Patent: September 18, 1990Assignee: Pennzoil Products CompanyInventor: Brent R. Dohner
-
Patent number: 4937120Abstract: A long-chain keto group is introduced into the molecule of furylfulgide hng no hydrophobic group to procure a good balance of hydrophilicity and hydrophobicity, thereby making it possible to obtain a uniform ultra-thin film optical recording medium having photochromism of fulgide according to spin coating method or Langmuir-Blodgett method.Type: GrantFiled: April 27, 1989Date of Patent: June 26, 1990Assignee: Director-General of the Agency of Industrial Science and TechnologyInventors: Junichi Hibino, Eiji Ando
-
Patent number: 4900843Abstract: A method of dehalogeno-dimerizing an aromatic halide compound substituted by at least one halogen atom substituted on the aromatic ring using a palladium catalyst on support in the presence of water, a reducing agent and a halogen acceptor is disclosed. The method is characterized by using the palladium catalyst on support immersed in a hydrohalogenic acid prior to the dehalogeno-dimerization reaction.Type: GrantFiled: May 31, 1988Date of Patent: February 13, 1990Assignee: Mitsubishi Chemical Industries LimitedInventors: Mitsumasa Kitai, Yoshio Katsuro, Shigenori Kawamura, Masumi Hino, Keiichi Sato
-
Patent number: 4845240Abstract: A long-chain keto group is introduced into the molecule of furylfulgide hng no hydrophobic group to procure a good balance of hydrophilicity and hydrophobicity, thereby making it possible to obtain a uniform ultra-thin film optical recording medium having photochromism of fulgide according to spin coating method of Langmuir-Blodgett method.Type: GrantFiled: March 28, 1988Date of Patent: July 4, 1989Assignee: Director-General of the Agency of Industrial Science and TechnologyInventors: Junichi Hibino, Eiji Ando
-
Patent number: 4803287Abstract: The invention provides a photochromic material characterized by an improvnt in balance of the substituents in the conventional furylfulgides and represented by the general formula: ##STR1## (wherein R represents an alkyl chain having 5 to 31 carbon atoms). According to this molecular structure, a mutually appropriate steric hindrance is induced between the isopropylidence group and the long-chain alkyl group to make the regio isomer unstable, thus preventing the regio isomer from being by-produced while also inhibiting any isomerization reaction from occuring in the synthesis of the fulgide. Further, a good balance of hydrophilic part and hydrophobic part is produced to facilitate formation of a Langmuir-Blodgett film.Type: GrantFiled: March 9, 1987Date of Patent: February 7, 1989Assignee: Director-General of the Agency of Industrial Science and TechnologyInventors: Junichi Hibino, Eiji Ando
-
Patent number: 4784784Abstract: Hydraulic fluids contain as novel dispersants, reaction products of di- or trisuccinic anhydrides with polyethoxylated alcohols to produce polyethoxylated hydrocarbyl polyanhydrides.Type: GrantFiled: June 9, 1987Date of Patent: November 15, 1988Assignee: Pennzoil Products CompanyInventor: Brent R. Dohner
-
Patent number: 4720555Abstract: Hydrocarbons substituted with at least two anhydride moieties, are useful as dispersants in aqueous based hydraulic fluids and as curing agents in epoxy resins. These anhydrides are produced by reaction of a hydrocarbon derived from a soft wax or liquid hydrocarbon with a molar excess of an organic anhydride, preferably using a molar ratio excess of 3:1 to 8:1 of maleic anhydride, and under free radical conditions. The products are insoluble in the parent hydrocarbons.Type: GrantFiled: September 12, 1986Date of Patent: January 19, 1988Assignee: Pennzoil Products CompanyInventor: William D. Nash
-
Patent number: 4665189Abstract: There are described compounds of formula ##STR1## in which n is 0, 1 or 2, R.sup.1 is a hydrocarbyl group optionally substituted with an optionally substituted phenyl group and containing from 5 to 30 carbon atoms, R.sup.2 is optionally substituted phenyl or C.sub.1-10 alkyl optionally substituted by one or more substituents selected from optionally protected hydroxyl, optionally protected carboxyl, nitrile, optionally protected tetrazolyl, --COR.sup.6 where R.sup.6 is C.sub.1-4 alkyl, C.sub.1-4 alkoxy, an optionally protected amino acid residue or --NR.sub.2.sup.7 where each R.sup.7 is hydrogen or C.sub.1-4 alkyl, and --NHR.sup.8 where R.sup.8 is hydrogen, a protecting group, an optionally protected amino acid residue, C.sub.1-4 alkyl or --COR.sup.9 where R.sup.9 is C.sub.1-4 alkyl or C.sub.1-4 alkoxy, and R.sup.3, R.sup.4 and R.sup.5 are each selected from hydrogen, carboxyl, C.sub.2-5 alkoxycarbonyl, C.sub.1-4 alkyl, C.sub.Type: GrantFiled: July 30, 1984Date of Patent: May 12, 1987Assignee: Lilly Industries LimitedInventors: Stephen R. Baker, William B. Jamieson, Alec Todd
-
Patent number: 4634779Abstract: There are described novel dyes of the formulae ##STR1## in which R.sub.1 and R.sub.2 independently of one another are each hydrogen, unsubstituted or substituted alkyl, cycloalkyl, aralkyl or aryl, and R.sub.1 and R.sub.2 together with the nitrogen atom, and optionally with the inclusion of further hetero atoms, can also form a 5- to 7-membered heterocycle, or one of the radicals R.sub.1 or R.sub.2 can be linked with the carbon atom, in the o-position with respect to the amino group, of the ring A to form a fused-on, saturated, unsubstituted or substituted 5- or 6-membered ring,X is .dbd.NR.sub.3, .dbd.NCOR.sub.4, ##STR2## .dbd.NH or .dbd.O, wherein R.sub.3 is alkyl or unsubstituted or substituted phenyl,R.sub.4 is unsubstituted or substituted alkyl, aralkyl, aryl, vinyl, alkoxy, phenoxy or amino, andR.sub.5 is cyano, carbalkoxy, or unsubstituted or substituted carbonamide, andR.sub.Type: GrantFiled: September 30, 1982Date of Patent: January 6, 1987Assignee: Ciba-Geigy CorporationInventor: Peter Mockli
-
Patent number: 4620014Abstract: Novel 2-furylbutyrolactones are directly formed by reaction of 2,5-dialkoxy-2,5-dihydrofurans and 2,3-dihydroxybutenolides in aqueous media and recovering crystalline product from an anhydrous medium. These novel compounds and compositions containing same may be used for lymophocyte stimulation.Type: GrantFiled: September 29, 1983Date of Patent: October 28, 1986Assignee: National Foundation for Cancer ResearchInventors: Albert Szent-Gyorgyi, Gabor B. Fodor
-
Patent number: 4596867Abstract: Di-substituted maleic anhydride compounds are disclosed of the structural formula ##STR1## wherein R and R.sup.1 are selected from the group consisting of aliphatic and phenyl moieties, and R.sup.2 is a divalent aromatic moiety. Polyamide-imide polymers, polyimide polymers and vinyl copolymers derived therefrom are also disclosed.Type: GrantFiled: July 12, 1984Date of Patent: June 24, 1986Assignee: Standard Oil Company (Indiana)Inventors: Ellis K. Fields, Mark L. Winzenburg, Steven J. Behrend
-
Patent number: 4550171Abstract: There are described novel dyes of the formulae ##STR1## in which R.sub.1 and R.sub.2 independently of one another are each hydrogen, unsubstituted or substituted alkyl, cycloalkyl, aralkyl or aryl, and R.sub.1 and R.sub.2 together with the nitrogen atom, and optionally with the inclusion of further hetero atoms, can also form a 5- to 7-membered heterocycle, or one of the radicals R.sub.1 or R.sub.2 can be linked with the carbon atom, in the o-position with respect to the amino group, of the ring A to form a fused-on, saturated, unsubstituted or substituted 5- or 6-membered ring,X is .dbd.NR.sub.3, .dbd.NCOR.sub.4, ##STR2## .dbd.NH or .dbd.O, wherein R.sub.3 is alkyl or unsubstituted or substituted phenyl,R.sub.4 is unsubstituted or substituted alkyl, aralkyl, aryl, vinyl, alkoxy, phenoxy or amino, andR.sub.5 is cyano, carbalkoxy, or unsubstituted or substituted carbonamide, andR.sub.Type: GrantFiled: October 10, 1978Date of Patent: October 29, 1985Assignee: Ciba Geigy CorporationInventor: Peter Mockli
-
Patent number: 4526950Abstract: Interpolymers of .alpha.-olefins having at least about 6 carbon atoms and unsaturated carboxylic acids or derivatives thereof, such as maleic anhydride, may be prepared by heating reactive amounts only of the monomers with a free radical initiator, preferably in a solvent-free system and typically at a temperature of at least about 135.degree. C. The time required for polymerization is relatively short under these conditions.Type: GrantFiled: October 28, 1983Date of Patent: July 2, 1985Assignee: The Lubrizol CorporationInventor: Arturs Grava
-
Patent number: 4446264Abstract: Compounds prepared by reacting maleic anhydride, maleic acid or their esters with thiols; which exhibit a synergistic effect when combined with a phenolic antioxidant in the stabilization of organic materials such as natural and synthetic polymers, rubbers, lubricants and oil, etc. are disclosed.Type: GrantFiled: April 15, 1982Date of Patent: May 1, 1984Assignee: The Goodyear Tire & Rubber CompanyInventor: Kirkwood S. Cottman
-
Patent number: 4442298Abstract: A phenylethyl substituted dimer of ethylene and maleic anhydride, names 7-phenyloctane-(1,2),(5,6)-dianhydride, is chemically synthesized by(a) alkylating alkyl 2,4-dihalobutyrate with alkyl 2-cyano-3-phenylbutyrate,(b) alkylating the resulting halide condensation product with a carboxylate selected from the group consisting of trialkyl ethane-1,1,2-tricarboxylate and dimethyl cyanoethane-1,2-dicarboxylate,(c) acid hydrolyzing the resulting tetra or pentaester accompanied by decarboxylating, and(d) dehydrating the resulting tetra-acid to yield the desired phenylethyl substituted dimer of ethylene and maleic anhydride,wherein the alkyls in the butyrate and carboxylate ester groups each contain from one to about four carbon atoms and halo is selected from the group consisting of bromo, chloro and iodo.The dimer has anti-tumor and anti-viral properties and can be used in silver halide emulsions.Type: GrantFiled: August 30, 1982Date of Patent: April 10, 1984Assignee: Monsanto CompanyInventors: Jacob S. Tou, Alfred A. Schleppnik
-
Patent number: 4391981Abstract: Lactone oxazoline reaction products of hydrocarbon substituted lactone carboxylic acids, for example, polybutyl lactone carboxylic acid, with 2,2-disubstituted-2-amino-1-alkanols, such as tris-(hydroxymethyl)aminomethane (THAM), and their derivatives are useful additives in oleaginous compositions, such as sludge dispersants for lubricating oil, or anti-rust agents for gasoline.Type: GrantFiled: July 27, 1981Date of Patent: July 5, 1983Assignee: Exxon Research & Engineering Co.Inventors: Stanley J. Brois, Antonio Gutierrez