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| Number | Title | Issue Date |
| 7341816 | Method of controlling the differential dissolution rate of photoresist compositions, polycyclic olefin polymers and monomers used for making such polymers A photoresist composition encompassing a polymer having at least one polycyclic olefin repeat unit having a desired exo mole percent is provided, where the repeat unit is derived from a polycyclic olefin monomer having the desired exo mole percent. Such polymers hav... | 03/11/2008 |
| 6939845 | Fragrance precursors The present invention provides a fragrance precursor of formula I: that is capable of forming a fragrant ketone of formula II: and a fragrant lactone of formula III: | 09/06/2005 |
| 6875894 | Bis(alkylthio)carbenium salts The invention relates to bis(alkylthio)carbenium salts of the formula I with the stated definitions for R1, R2, R3 and Y−, and to a process for the preparation th... | 04/05/2005 |
| 6720463 | Process for the production of alkanediol derivative The present invention provides a process for producing an alkanediol derivative represented by the general formula (II) from an ester compound represented by the general formula (I), safely without giving rise to racemization. The present invention lies in a ... | 04/13/2004 |
| 6657089 | Palladium catalyst and process for producing ether This invention relates to a palladium catalyst comprising a mesoporous aluminosilicate which has been treated with ammonia or a salt thereof, and palladium supported on said mesoporous aluminosilicate; and also to a process for producing an ether, which c... | 12/02/2003 |
| 6642424 | Intermediates and improved processes for the preparation of neplanocin A Intermediate compounds, including 2-(t-butyldimethylsilyloxymethyl)-3,4-[(dimethylmethylene)dioxy]-5-hydroxy -tricyclo[5.2.1.02,6 ]dec-8-ene, which are useful for the synthesis of neplanocin A having strong antitumor activity. Improved processes... | 11/04/2003 |
| 6624335 | Ether, polymer, resist composition and patterning process An ether compound of formula (1) is provided wherein R1 is H or C1-6 alkyl, R2 is C1-6 alkyl, R3 is H, C1-15 acyl or C1-15 alkoxycarbonyl which may be substituted with halogen atoms, ... | 09/23/2003 |
| 6562782 | Oligocycloalkanoid compounds and methods of use The present invention related to an oligocycloalkanoid compound comprising formula (I) ##STR1## wherein m, n, and o are independently an integer from 0 to 2; A1 through A10 are independently a direct link, alkylene, alkylene-O--, ... | 05/13/2003 |
| 6548715 | Structural analogues of vitamin D A compound of the formula I: ##STR1## in which P is hydrogen or alkyl; Y and Y' are each hydrogen or, when taken together, represent a group .dbd.CH2 ; W and W' are each hydrogen; X is selected from the group consisting of a hydroxyalkyl, a hydroxya... | 04/15/2003 |
| 6465059 | Liquid-crystalline medium The invention relates to a liquid-crystalline medium one or more compounds of the general formula IA ##STR1## and one or more compounds of the formula IB ##STR2## R, R*, R**, z, L and Y are defined herein.... | 10/15/2002 |
| 6444858 | Method of reducing flock during alkoxylation The present invention provides a method for alkoxylating organic compounds comprising contacting an organic compound adapted to be alkoxylated with an alkylene oxide in a reaction vessel under conditions effective to alkoxylate the organic compound. The a... | 09/03/2002 |
| 6410802 | Methods for synthesizing ether compounds and intermediates therefor The present invention relates to novel ether compounds, compositions comprising ether compounds, and methods useful for treating and preventing cardiovascular diseases, dyslipidemias, dysproteinemias, and glucose metabolism disorders comprising administer... | 06/25/2002 |
| 6365771 | Alicyclic compound and curable resin composition Decane compound or decene compound shown in the formula [1] below ##STR1## wherein A1 and A2 are independently hydrogen or (meth)acryloyl group or 2-vinyloxyethyl group; and the dotted line is single bond or double bond with the prov... | 04/02/2002 |
| 6359153 | Photoresist monomers and preparation thereof The present invention relates to monomers for preparing photoresist polymer resins which can be used in a photolithography process employing a deep ultraviolet light source, and the preparation of the same. Preferred monomers are represented by following ... | 03/19/2002 |
| 6319889 | Chemical compounds and perfume composition The invention is directed to novel compounds selected from the class of compounds having the structural formulae ##STR1## wherein the cyclohexane moiety with the dotted circle represents either a cyclohexane ring or a benzene ring, n represents an integer... | 11/20/2001 |
| 6211416 | Method for producing enol ethers Enol ethers of the formula I ##STR1## where R1 is an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radical which may carry further substituents which do not react with acetylenes or allenes, and the radicals R, independently ... | 04/03/2001 |
| 6133471 | Process for producing chromans A process for producing chromans, comprising reacting a phenol, a formaldehyde and an alcohol in the presence of a secondary amine and an acid, to generate an alkoxymethylphenol compound with the ortho position to the phenolic hydroxyl group substituted w... | 10/17/2000 |
| 6126857 | Bisalkenylbicyclohexanes, and liquid-crystalline medium The invention relates to bisalkenylbicyclohexanes of the formula I ##STR1## in which R1, R2 and Z are as defined in claim 1, and to their use in liquid-crystalline media.... | 10/03/2000 |
| 6093836 | 1,3-diphenylpropane derivatives having inhibitory activity against tyrosinase and process for preparation thereof The present invention relates to a novel 1,3-diphenylpropane derivative having an inhibitory activity against tyrosinase represented by the following formula (I): ##STR1## in which - - represents double or single bond, R1 represents hydrog... | 07/25/2000 |
| 6030545 | Tercyclohexane, liquid-crystalline compound and liquid crystal composition comprising same The present invention provides a liquid-crystalline compound which has a reduced viscosity, a wide liquid crystal temperature range (high clearing point), a high chemical stability (extremely high specific resistance, high voltage holding ratio) and a hig... | 02/29/2000 |
| 5728796 | Process to react epoxide-containing compounds and aliphatic alcohols A process reaction between: (1) a compound that contains one or more epoxide moieties per molecule, and (2) a compound that contains one or more primary aliphatic hydroxyl groups per molecule; is catalyzed by: (3) a catalyst compound containing one or mor... | 03/17/1998 |
| 5474716 | Process for the preparation of bridged cyclopentadienylmagnesium compounds and use thereof for preparing metallocenes Disclosed are processes for the preparation of new bridged cyclopentadienylmagnesium compounds of the general formula Q(CpRa)(Cp'R'a ')Mg, and the use thereof for preparing bridged metallocenes.... | 12/12/1995 |
| 5453221 | Bridged cyclopentadienylmagnesium compounds and use thereof for preparing metallocenes Disclosed are new bridged cyclopentadienylmagnesium compounds of the general formula Q(CpRa) (Cp'R'a')Mg, processes for the preparation thereof, and the use thereof for preparing bridged metallocenes.... | 09/26/1995 |
| 5444168 | Process for the production of symmetrical ethers from secondary alcohols Secondary alcohols are converted to symmetrical secondary alkyl ethers in high selectivity. The method employs acidic solid metallosilicate catalyst particles to accomplish the etherification by selective intermolecular dehydration of secondary alcohol to... | 08/22/1995 |
| 5371299 | Process for the preparation of diethers Preparation of diethers of the formula ##STR1## wherein R is an alkyl, cycloalkyl, aryl, or aralkyl radical, by formation of an unsaturated aldehyde of the formula ##STR2## wherein R is as defined above, by means of an aldol condensation reactio... | 12/06/1994 |
| 5342903 | Process for the preparation of adducts of epoxides and alcohols A process for the preparation of adducts by reacting an alcohol with an epoxy compound in the presence of a catalyst, which comprises reacting an alcohol of formula I ##STR1## wherein A is an aliphatic, cycloaliphatic or araliphatic radical and r is ... | 08/30/1994 |
| 5313002 | Ethers for aromatizing purposes The invention relates to novel ethers and their use as aroma precursors. The ethers are derived from ionol and related compounds. These aroma precursors do not have a substantial aroma as such under ambient conditions, but will break up into a complex mix... | 05/17/1994 |
| 5237110 | 19-nor-vitamin D compounds This invention provides a novel class of vitamin D-related compounds, namely the 1-hydroxy-19-nor-vitamin D analogs, as well as a general method for their chemical synthesis. The compounds exhibit pronounced activity in arresting the proliferation ... | 08/17/1993 |
| 5210322 | Processes for the preparation of ethers A process for preparing ethers which comprises contacting a carboxylated ether with a metal oxide catalyst under conditions effective to produce the ether.... | 05/11/1993 |
| 5194423 | Alpha-(alkylcyclohexyloxy)-beta-alkanols and perfume compositions containing the same An -(alkylcyclohexyloxy)-ଲ-alkanol of formula (1) ##STR1## wherein at least one of R1, R2, R3, R4, and R5 is the group ##STR2## wherein R9 and R10 are the ... | 03/16/1993 |
| 5178794 | Alkylene glycol derivative and liquid crystal mixture containing the same A compound represented by the following general formula (I). ##STR1## wherein R1 and R2 represent independently a straight-chain alkyl group having from 1 to 10 carbon atoms; X represents a direct bond, --CH2 CH2... | 01/12/1993 |
| 5130435 | Preparation of vinyl ethers Vinyl ethers of the formula ##STR1## wherein R1, R2 and R3 are identical to or different from one another, each being hydrogen, straight-chain or branched alkyl or alkenyl of up to 12 carbon atoms, cycloalkyl or cyclo... | 07/14/1992 |
| 5104987 | Alkoxylation of active hydrogen-containing compounds This invention relates to a process for the alkoxylation of an active hydrogen-containing compound comprising contacting the active hydrogen-containing compound with an alkylene carbonate in the presence of a mixed metal oxide catalyst under conditions ef... | 04/14/1992 |
| 5068462 | Fluorine-substituted compound containing ether bond and intermediate thereof A fluorine-substituted compound containing an ether bond and an intermediate thereof are described, which are represented by: ##STR1## wherein R represents a straight-chain alkyl group having 1 to 8 carbon atoms; n represents an integer of 2 to 7; m ... | 11/26/1991 |
| 5032312 | 3E-cyclohexylalkoxy derivatives Compounds of the formula ##STR1## wherein R1 denotes a group R3 or R3 --A4 --Z3 -- and R2 denotes a group R4 or --Z4 --A5 --R4 ; m and n eac... | 07/16/1991 |
| 5013477 | Alkenylbicyclohexane liquid crystals Compounds of the formula ##STR1## wherein Z represents a single covalent bond or --CH2 CH2 --, R1 denotes 1E-alkenyl with 2-10 carbon atoms or 3E-alkenyl with 4-10 carbon atoms and R2 is alkyl with 1-10 car... | 05/07/1991 |
| 4964616 | Tricyclic cyclohexenyl cyclohexane derivative A tricyclic cyclohexenyl cyclohexane derivative is disclosed. This compound is capable of lowering the Ɗn value of mixed liquid crystals, which have been obtained by adding said compound to nematic liquid crystals widely used as matrix liquid crystals, a... | 10/23/1990 |
| 4960951 | Novel perfluoropolyethers Novel perfluoropolyethers, such as perfluorodipentaerythritol hexaethyl ether, and their intermediates exhibit excellent chemical and thermal stability and are useful as vapor phase soldering fluids and convection cooling liquids.... | 10/02/1990 |
| 4894109 | Method and apparatus for tacking together the copies of multicopy forms A method and apparatus for tacking together multipage forms having pin holes with the use of adhesive tacking tape.... | 01/16/1990 |
| 4886619 | Fluorine-containing chiral smectic liquid crystals Compounds are provided which comprise a fluorocarbon terminal portion and a chiral hydrocarbon terminal portion, said terminal portions being connected by a central core, said compounds having tilted smectic mesophases or having latent tilted smectic meso... | 12/12/1989 |
