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| Number | Title | Issue Date |
| 7396487 | Liquid crystal compounds A compound of formula (I): where R1 is alkyl or alkenyl, Y1 and Y2 are independently selected from oxygen or sulphur, n is an integer of from 1 to 5, A is an optionally substituted phenyl or an optionally substituted cycloalkyl ring,... | 07/08/2008 |
| 7238831 | Mesogens Novel platform mesogens, intermediates, and polymerizable mesogens made therefrom. ... | 07/03/2007 |
| 7226699 | Proton conductor film, manufacturing method therefor, fuel cell provided with proton conductor film and manufacturing method therefor A proton conductor and film thereof, electrochemical device, such as a fuel cell, employing same and methods of manufacturing same are provided. The proton conductor material film includes a proton conductor and polyvinyl alcohol as a binder for the proton conductor... | 06/05/2007 |
| 7182885 | Fluorinated indenes and 1,7-dihydroindacenes of negative dielectric anisotropy Fluorinated indenes and 1,7-dihydroindacenes of the general formulae (I) and (II) of negative dielectric anisotropy (Δε | 02/27/2007 |
| 7157183 | Proton conductor, production method thereof, and electrochemical device using the same A proton conductor mainly contains a carbonaceous material derivative, such as, a fullerene derivative, a carbon cluster derivative, or a tubular carbonaceous material derivative in which groups capable of transferring protons, for example, —OH groups or —OSO | 01/02/2007 |
| 7153608 | Ionic conductor, process for production thereof, and electrochemical device An ionic conductor, such as a proton conductor, a process for production thereof, and an electrochemical device, such as fuel cell, that includes the ionic conductor is provided. The ionic conductor of the present invention is formed from a polymer in which carbon c... | 12/26/2006 |
| 7147800 | Selective ether cleavage synthesis of liquid crystals A method for making platform molecules comprising: reacting 4-alkoxy benzoyl chloride with R2-hydroquinone under first conditions effective to produce bis 1,4[4-alkoxy-benzoyloxy]-R2-phenylene comprising bis terminal alkoxy groups wherein R | 12/12/2006 |
| 7060741 | Polymer compositions with improved property constancy The present invention provides polymer compositions of special graft rubber polymers, in the production of which are employed rubbers with defined particle diameters obtained by seed polymerization using seed latex particles with defined particle diameters. ... | 06/13/2006 |
| 6949660 | Chiral (1pyrrolino) fullerene derivatives An E-isomeric fulleropyrrolidine compound of formula (I): is disclosed. Also disclosed is a method for preparing and polymers prepared from such a compound. ... | 09/27/2005 |
| 6939915 | Method for agglomerating finely divided polybutadiene latices The present invention relates to a method for agglomerating finely divided rubber latices by adding an aqueous solution of a water-soluble amphiphilic copolymer that contains at least one hydrophilic portion and at least one hydrophobic portion. ... | 09/06/2005 |
| 6444841 | Hydroquinone diester derivatives and the method for producing the same A highly pure hydroquinone dietser derivative can be produced from the reaction product of ketoisophorone with an acylating agent in a high yield by a simple and easy operation. In the presence of an acid catalyst, a cyclohex-2-ene-1,4-dione derivative sh... | 09/03/2002 |
| 6440328 | Preparation of acrylated liquid-crystalline compounds The invention relates to a one-step process for the preparation of acryloyl group-containing liquid-crystalline monomers of the general formula (1) (Z--Y1 --A2 --Y2 --)m M(--O--A1 -acrylate)n (1... | 08/27/2002 |
| 6111129 | Process for the preparation of alkanediol-diaminobenzoates A process is disclosed for the direct preparation of alkanediol-diaminobenzoates comprising transesterifying an alkyl-p-aminobenzoate with a diol in the presence of a transesterification catalyst.... | 08/29/2000 |
| 5955628 | Trimethylcatechol diester and a method for producing the same This method provides a novel trimethylcatechol diester, i.e. 3,4,5-trimethylcatechol diester, at a high yield by reacting 2,6,6-trimethylcyclohexe-2-en-1,4-dione with an acylating agent in the presence of an acid catalyst. The acylating agent includes a C... | 09/21/1999 |
| 5948922 | Compounds with substituted cyclic hydrocarbon moieties linked by secondary or tertiary oxycarbonyl containing moiety providing reworkable cured thermosets Compounds containing two cyclic hydrocarbon moieties which are substituted to provide crosslinking functionality and which are linked to each other by secondary or tertiary oxycarbonyl containing moiety are basis for compositions which are cured to provid... | 09/07/1999 |
| 5750711 | Dicarboxylic acid derivatives The dicarboxylic acid derivatives according to the invention have the following structure ##STR1## wherein X denotes O, S, (CF2)m, C(CF3)2 or CF2 --CF(CF3) (m=1 to 10), and R stems fro... | 05/12/1998 |
| 5618907 | Thallium catalyzed multidimensional ester oligomers The yield of fully substituted, multidimensional aromatic hubs in the condensation of hydroxyl and acid halide functionalities is improved by adding a thallium catalyst, such as thallium ethoxide (Tl--OC2 H5), in the solvent.... | 04/08/1997 |
| 5599974 | Aldehydic agents for allosteric modification of hemoglobin Chemical compounds which interact inside the central water cavity of hemoglobin and bridge between the two subunits can be used to allosterically modify hemoglobin towards tense and relaxed states. The functional groups employed are aldehydes and ... | 02/04/1997 |
| 5597943 | Phospholipase A2 inhibitor The present invention relates to the new thielocin derivatives, which exhibit phospholipase A2 inhibitory activity of the formula: ##STR1## wherein R1, R2, R3, R4, R5, R6, R... | 01/28/1997 |
| 5510497 | Polymerizable aliphatic cyclobutene compositions Aliphatic cyclobutene compositions according to the formula ##STR1## can be homopolymerized or copolymerized with a variety of comonomers, including bismaleimides, to produce tough, low dielectric constant resins.... | 04/23/1996 |
| 5476888 | Diphosphines The diposphines have the formula (I) ##STR1## wherein: R2, R3 and R4 independently from each other represent a hydrocarbyl group which is substituted with one or more radicals selected from the group consisting of hal... | 12/19/1995 |
| 5442096 | Polymerizable compound and polymer therefrom A homopolymer or a copolymer comprises a polymerizable compound represented by formula (I): A--X--COCOOR1 (I) wherein R1 represents a hydrogen atom, a C1 -C5 alkyl group or an ... | 08/15/1995 |
| 5334766 | Process for the resolution of racemic diphosphine oxides A process for the resolution of racemic diphosphine oxides into the optically active antipodes by reacting the racemate with a resolving agent comprising using a carbamate or thiocarbamate of an optically active -hydroxycarboxylic acid or -a... | 08/02/1994 |
| 5332858 | Ester composition The invention relates to a method for preparing an ester composition in which at least one activated phenolic ether group of a molecule is reacted with at least one haloformyl group of another molecule.... | 07/26/1994 |
| 5330678 | Liquid crystal compound Disclosed are novel liquid crystal compounds containing a naphthalene ring, having an excellent light leaking ratio at tristable states, and represented by the following formula: ##STR1## wherein R1 is a C6 -C16 linea... | 07/19/1994 |
| 5322954 | Synthesis of 4-substituted phthalic anhydrides Disclosed is a method of making a 4-substituted phthalic anhydride. A halomaleic (including halofumaric anhydride (or the acid or ester thereof) is made by the reaction of-maleic anhydride with chlorine or bromine. The halomaleic anhydride is reacted with... | 06/21/1994 |
| 5294732 | Polysubstituted fullerenes and their preparation The present invention is directed to polysubstituted fullerene moieties having a plurality of substituents thereon wherein the substituents are selected from the group consisting of hydroxy in combination with hydroxy, amino, oxide, nitro, organocarboxy, ... | 03/15/1994 |
| 5248727 | Vinyl chloride polymer based moulding compositions with reduced fogging Thermoplastic molding compositions of a vinyl chloride polymer and one or more emulsion polymers made with special emulsifiers have improved properties for technical application, such as reduced fogging. They are used for the production of molded articles... | 09/28/1993 |
| 5198572 | Copolymers of dicarboxylic acids and salicylic acids A composition and method of making copolymers of salicylic acid and dicarboxylic acid by reacting at least one salicylic acid with at least one dicarboxylic acid and at least one acetic anhydride for every salicylic and dicarboxylic acid present. The comp... | 03/30/1993 |
| 5177248 | Process of forming polysubstituted fullerenes The present invention is directed toward the preparation of novel polysubstituted fullerenes. The method of forming polysubstituted fullerenes comprises contacting a fullerene with an electrophilic reagent selected from the group consisting of nitronium i... | 01/05/1993 |
| 5142088 | Preparation of branched polycarbonates and chloroformates, and intermediates therefor Ester polyphenols such as the tris(bisphenol A) ester of trimellitic acid are prepared by the reaction of the corresponding aromatic poly(acyl halide) with a dihydroxyaromatic compound such as bisphenol A. They may be employed in the preparation of branch... | 08/25/1992 |
| 5130050 | Liquid crystal compound A new tetrastable liquid crystal is provided which is useful for display and switching devices. The liquid crystal has the formula ##STR1## where R1 is a C5-18 alkyl group and R2 is a C4-15 alkyl group and ... | 07/14/1992 |
| 5114616 | Esterified glycidyl ether addition products and their use The novel glycidyl ether addition products are obtained by esterification of a diol compound, selected from the group comprising linear oxyalkylates and other amine-free aliphatic diols, and an addition compound of polyether block polymers and glycidyl et... | 05/19/1992 |
| 5114613 | Lactic acid derivative and liquid crystal composition containing same An optically active lactic acid derivative represented by the following formula (I): ##STR1## wherein R represents a linear, branched or cyclic saturated or unsaturated hydrocarbon group having 1 to 18 carbon atoms; C* represents an asymmetric c... | 05/19/1992 |
| 5100579 | Polyphenyl-based ester compounds and liquid crystal compositions containing same Polyphenyl-based liquid crystal compounds represented by the following general formula (1) and liquid crystal composition containing the same: ##STR1## wherein R1 represents a straight or branched C1-18 alkyl group, haloalkyl gr... | 03/31/1992 |
| 5078907 | Unsymmetrical dicarboxylic esters as bleach precursors A bleach precursor compound, its peroxygen derivative, and detergent compositions containing these materials are disclosed herein. The bleach precursors structurally comprise a pair of different diesters, one ester containing an electrically-charged funct... | 01/07/1992 |
| 5069818 | Functionalized polyphenylene ethers and blends with polyamides Functionalized polyphenylene ether compositions are provided which are particularly useful for effecting compatibility for a blend of polyphenylene ether resin and a polyamide resin. The functionalized-polyphenylene ether is the reaction product of a ... | 12/03/1991 |
| 5051527 | Liquid crystal compounds having fluoroalkyl radical The invention lies in novel ferroelectric liquid crystal compounds particularly represented by the general formulae, having a good responsibility in relation to the applied electric field and a wide range of phase transition points inclusive of the room t... | 09/24/1991 |
| 4973738 | Liquid crystal compounds having naphthalene nucleus Novel ferroelectric liquid crystal compounds which may realize a stable molecular orientation which makes it possible to give a definite light-dark contrast in the no electric field state and attain a definite threshold property as well as hysteresis, and... | 11/27/1990 |
| 4950775 | Antihypercholesterolemic compounds and synthesis thereof A method of preparing compactin and mevinolin, ketoacid, enone, and glutarate analogs thereof, and related compounds. The compounds are prepared in substantially enantiomerically pure form using a structurally convergent synthesis. Total syntheses of (+)-... | 08/21/1990 |
