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| Number | Title | Issue Date |
| 7244522 | Lubricant for magnetic recording medium and use thereof A magnetic recording medium and method for forming the magnetic recording medium are described. The magnetic recording medium includes a magnetic layer formed on a non-magnetic support, and a lubricant layer over the magnetic layer. The lubricant layer includes a co... | 07/17/2007 |
| 7056869 | Hydrocarbon fluids Hydrocarbon fluids are provided which have ASTM D-86 boiling point ranges within 235° C. to 400° C. and a naphthenic content greater than 60%, the naphthenics containing polycyclic materials, the fluids preferably have an aromatic content below 2% and an aniline p... | 06/06/2006 |
| 7019183 | Process for producing adamantane compound It is made possible to efficiently produce adamantane and analogues thereof, namely a hydrocarbon having an adamantane structure by a process which comprises isomerizing a tricyclic saturated hydrocarbon having ten or more carbon atoms in the presence of a solid-aci... | 03/28/2006 |
| 6566570 | Process for preparing cyclic monomers A process for producing an unsaturated cyclic compound, comprising the steps of hydrochlorinating a terpene to produce a hydrochlorinated terpene, and subjecting the hydrochlorinate terpene to elimination of hydrogen chloride to form an unsaturated cyclic... | 05/20/2003 |
| 6512152 | Tetracyclododecene compositions and process for producing the same The present invention is drawn to a tetracyclododecene composition having a regulated cyclopentadiene trimer content, whereby addition polymerization with the aid of a Ziegler catalyst can be carried out while preventing gelation caused by a cross-linking... | 01/28/2003 |
| 6479719 | Method and reactor for making norbornene This process for the manufacture of norbornene from dicyclopentadiene (DCPD) and ethylene is characterized in that the DCPD is subjected to partial monomerization to CPD by preheating: at a temperature of 140° C. to 240° C.; and under a pressure of 20 to 300... | 11/12/2002 |
| 6465703 | Process for the continuous preparation of tetracyclododecens The present invention relates to a process for the preparation of tetracyclododecenes, which can be a raw material of cycloolefin (co)polymers possessing excellent characters concerning their optical property, high transparency, heat resistance, and oil a... | 10/15/2002 |
| 6441259 | Process for the continuous preparation of tetracyclododecens The present invention relates to a process for the preparation of highly purified tetracyclododecenes, which can be a raw material of cycloolefin (co)polymers possessing excellent characters concerning their optical property, high transparency, heat resis... | 08/27/2002 |
| 6417405 | Synthesis of cyclopentadiene or substituted cyclopentadiene compounds Substituted or unsubstituted cyclopentadienyl are prepared by reducing 4-ketocyclopentene to an alcohol, replacing the hydroxyl functionality with a leaving group and deprotonating the resulting product under base induced elimination conditions.... | 07/09/2002 |
| 6414206 | Process for preparing bisindenylalkanes The present invention relates to a process for preparing bisindenylalkanes of formula I: ##STR1## wherein R1, R2, R3, and R4 independently represent H or a C1 -C6 hydrocarbon group or R | 07/02/2002 |
| 6380450 | Process for producing indene Tetrahydroindene is dehydrogenated in a vapor phase in the presence of a metallic catalyst, e.g., a nickel-molybdenum catalyst, to produce indene, which is industrially useful in high yield while inhibiting the catalyst from suffering a decrease in activi... | 04/30/2002 |
| 6268518 | Metallocene compounds and their use in catalysts for the polymerization of olefins It is disclosed a new class of bridged metallocene compounds of formula (I): ##STR1## wherein R1 and R2 can be hydrogen, alkyl, cycloalkyl, aryl, alkylaryl or arylalkyl radicals; R3 and R4 form a condensed, 5- ... | 07/31/2001 |
| 6242413 | Bicyclic aldehyde and ketone odorants The invention relates to bicyclic aldehydes and ketones of formula (I): ##STR1## wherein n is 1 or 2; R1 and R4 are independently H or CH3 ; and R2 and R3 are independently H, CH3 or CH2 C... | 06/05/2001 |
| 6162937 | Process for preparing cyclopentadienyl compounds A process for preparing bis-cyclopentadienyl compounds bridged by a methylene group is reported, said process comprising reacting formaldehyde with a cyclopentadienyl compound in the presence of a base and of a solvent having a dielectric constant (&3xb5;... | 12/19/2000 |
| 5888741 | Computer-based design and screening of molecules using DNA interactions It has been discovered that the degree of hormonal activity of candidate ligands correlates better with degree of fit into DNA than with the strength of receptor binding, and that the receptors in the steroid/thyroid hormone/vitamin A and D family alter t... | 03/30/1999 |
| 5866706 | Preparation and separation of RAC and MESO compound mixtures Utilization of thermodynamic ratios to produce pure rac and pure meso isomers or a mixture thereof.... | 02/02/1999 |
| 5847247 | Terpene-based solvents The specification discloses terpene-based solvent compositions which comprise diterpenes as a major component and a minor amount of monoterpenes. The mixtures exhibit solvent properties similar to monoterpenes but have flash points high enough to be class... | 12/08/1998 |
| 5763717 | Process for preparing hydroxybiphenyl A description is given of the preparation of hydroxybiphenyl by dehydrogenation of completely or partially hydrogenated precursors using a supported Rh catalyst which additionally contains chromium, manganese and alkali metal and can contain a sulphur com... | 06/09/1998 |
| 5723708 | Method for producing cyclopentadienes A method for producing cyclopentadienes which comprises the step of cyclodehydration of an unsaturated carbonyl compound having a specific chemical structure in a vapor phase in the presence of a specific solid acid catalyst. The cyclopentadienes of the i... | 03/03/1998 |
| 5723709 | Terpene dimer compositions and related methods of manufacture Terpene dimer compositions are provided which dry into a hard, tack free film upon exposure to air. The compositions include a terpene dimer having the molecular formula C20 H32 and contain at least one double bond. The terpene dimer... | 03/03/1998 |
| 5670683 | Racemic metallocene complexes and their preparation Cyclopentadineyl compounds of the formula II ##STR1## and formula III ##STR2## their preparation and their use as intermediates in the preparation of metallocene complexes of the formula I.... | 09/23/1997 |
| 5670681 | Process for preparing a carbon-bridged biscyclopentadiene compound The present invention relates to a process for preparing a carbon-bridged biscyclopentadiene compound by reacting one or two cyclopentadiene compounds LH with a carbonyl compound in the presence of at least one base and at least one phase transfer catalys... | 09/23/1997 |
| 5608131 | Pentacyclic hydrocarbon compound and halogenated pentacyclic hydrocarbon compound, and preparation processes thereof A process for the preparation of the compound of the formula ##STR1## comprising dimerizing norbornadiene in the presence of N-methylpiperidine and a combined catalyst of (1,5-cyclooctadiene)(1,3,5-cyclooctatriene)-ruthenium and N,N-dimethylacry... | 03/04/1997 |
| 5581004 | Preparation and use of (2-butene-1,4-diyl) magnesium complexes in organic synthesis The magnesium complexes of cyclic hydrocarbons and conjugated dienes, such as 1,2-dimethylenecycloalkanes and 1,3-butadienes, are readily prepared in high yields using highly reactive magnesium. Reactions of these (2-butene-1,4-diyl)magnesium reagents wit... | 12/03/1996 |
| 5578741 | Process for preparing cyclopentadienyl-type ligands 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 --YPR2, --YNR2, or --NR2, wherein Y is an al... | 11/26/1996 |
| 5498734 | Preparation and use of (2-butene-1,4-diyl)magnesium complexes in organic synthesis The magnesium complexes of cyclic hydrocarbons containing conjugated dienes, such as 1,2-dimethylenecycloalkanes, and 1,3-butadienes, are readily prepared in high yields using highly reactive magnesium. Reactions of these (2-butene-1,4 diyl)magnesium reag... | 03/12/1996 |
| 5449847 | Selective conversion of benzene to tercyclohexane There is provided a process for preparing tercyclohexane by reacting benzene with hydrogen. The process involves the use of a catalyst comprising an acidic solid and a hydrogenation component. The acidic solid may comprise a Group IVB metal oxide, such as... | 09/12/1995 |
| 5446222 | Oligomers of cyclopentadiene and process for making them The invention provides a two-step process for converting cyclopentadiene dimer to a high density fuel mixture comprising the steps of: (a) reacting said cyclopentadiene dimer in the presence of a solid catalyst comprising a porous crystalline material having a... | 08/29/1995 |
| 5446225 | Palladium catalyzed akylative cyclization useful in syntheses of Vitamin D and analogues An alkylative cycloaddition method is provided that is particularly useful for the synthesis of many of the Vitamin D analogues with differing side chains. Thus, a preferred synthesis is of Vitamin D analogues having a side chain R1 where a fir... | 08/29/1995 |
| 5444147 | Cyclopropane monomers and polymers derived therefrom Hydroxy-substituted-bis-phenyl cyclopropanes of formula (I): ##STR1## wherein R1 and R2 are selected from H or OH, at least one of R1 and R2 being o, m or p-OH, are useful as monomers to provide cross-linka... | 08/22/1995 |
| 5420320 | Method for preparing cyclopentadienyl-type ligands and metallocene compounds In accordance with the present invention there is provided a process for preparing a cyclopentadienyl-type ligand, the process comprises (1) reacting an alkali metal salt of a cyclopentadienyl-type compound and an aminofulvene compound to form a monoanion... | 05/30/1995 |
| 5414173 | Process of preparing cyclopentadiene and substituted derivatives thereof A process of preparing cyclopentadiene or substituted cyclopentadienes, such as tetramethylcyclopentadiene. The process involves contacting under reaction conditions cyclopentenol or a substituted cyclopentenol with a catalyst selected from (1) crystallin... | 05/09/1995 |
| 5406013 | Cyclopentadiene type compounds and method for making 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... | 04/11/1995 |
| 5393911 | Cyclopentadiene type compounds and method for making New fluorenyl silane compounds and method for their production are disclosed. The fluorenyl compounds have the formula ##STR1## wherein Z is a substituted or unsubstituted fluorenyl radical and Z' is a substituted or unsubstituted cyclopentadienyl-ty... | 02/28/1995 |
| 5338758 | Bicyclic diterpene PAF antagonist compounds Four bicyclic terpenes isolated from a culture broth of Phoma sp SCF0592, ATCC 74077, pharmaceutical compositions containing them and their use as PAF antagonists to treat allergic and inflammatory diseases are disclosed.... | 08/16/1994 |
| 5324876 | Catalytic metal promoted cycloaddition process Small catalytic amounts of a transition metal catalyst such as Cr(O) are used in a higher order cycloaddition process in which a triene is reacted with a diene or alkene to efficiently and economically provide a cycloaddition product.... | 06/28/1994 |
| 5310931 | Isomerization of cycloolefin from endo-form to exo-form and copolymerization of cycloolefin and ethylene This invention is to provide a novel process for the isomerization of a cycloolefin having an endo form to a cycloolefin having an exo form. The resulting isomer mixture has a novel composition, and a random copolymer produced from the above compositional... | 05/10/1994 |
| 5292977 | Palladium catalyzed alkylative cyclization useful in synthesis of vitamin D and analogues An alkylative cycloaddition method is provided that is particularly useful for the synthesis of many of the Vitamin D analogues with differing side chains. Thus, a preferred synthesis is of Vitamin D analogues having a side chain R1 where a sub... | 03/08/1994 |
| 5233110 | Process for the preparation of cyclooctene A process for the preparation of cyclooctene which comprises irradiating 1,5-cyclooctadiene with light in the presence of a photodehydrogenation catalyst, acetone and an alcohol to partially hydrogenate the 1,5-cyclooctadiene.... | 08/03/1993 |
| 5231205 | Preparation and use of (2-butene-1,4-diyl)magnesium complexes in organic synthesis The magnesium complexes of cyclic hydrocarbons, such as 1,2-dimethylenecycloalkanes, are readily prepared in high yields using highly reactive magnesium. Reactions of these (2-butene-1,4-diyl)magnesium reagents with electrophiles such as dibromoalkanes, a... | 07/27/1993 |
