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| Number | Title | Issue Date |
| 7851662 | Preparation and provision of high assay decabromodiphenylethane High assay reaction-derived decabromodiphenylethane product is produced and provided. The process comprises feeding diphenylethane, a partially brominated diphenylethane, or both subsurface into the liquid phase of a reaction mixture formed from components comprisin... | 12/14/2010 |
| 7408088 | Process for separation of bromine from gaseous hydrogen bromide and use of such process in production of decabromodiphenylethane Bromine is scrubbed from a gaseous mixture of bromine and hydrogen bromide by passing the mixture into a mixture formed from (i) diphenylethane and/or partially brominated diphenylethane with average bromine number less than about 2 and (ii) a catalytic quantity of ... | 08/05/2008 |
| 7378449 | Poly(bromoaryl)alkane additives and methods for their preparation and use An additive mixture useful as a flame retardant is described. The mixture is comprised of (i) a poly(bromophenyl)alkane having in the molecule in the range of 13 to 60 carbon atoms and in the range of two to four aryl groups and (ii) a poly(bromophenyl)bromoalkane h... | 05/27/2008 |
| 7358407 | Bromination process This invention relates to a novel process which comprises feeding a mixture formed from diphenylethane and bromine to a stirrable reaction mass comprised of bromine and a bromination catalyst to yield a decabromodiphenylethane wet cake which can be most economically... | 04/15/2008 |
| 7304192 | Method for producing chlorinated hydrocarbon having chlorinated tertiary carbon The present invention relates to a simple method for efficiently producing aromatic-substituted chlorinated hydrocarbons, for example, high-purity cumyl chloride (1,4-bis(1-chloro-1-methylethyl)benzene, p-DCC) that can be used as an initiator for cationic polymeriza... | 12/04/2007 |
| 7288587 | Poly(phenylene oxide) resin composition, prepreg, laminates sheet, printed wiring board, and multilayer printed wiring board The poly(phenylene oxide) resin composition of the invention is a poly(phenylene oxide) resin composition containing poly(phenylene oxide) and triallyl isocyanurate, wherein the poly(phenylene oxide) has a number average molecular weight in a range from 2,000 to 12,... | 10/30/2007 |
| 7288614 | Substituted cycloalkanes, and use thereof as cationic polymerization initiators Substituted 7- to 12-membered cycloalkanes which have leaving groups, in particular chlorine atoms, on tertiary ring carbons, a process for preparing them and their use as initiators for cationic polymerization, in particular the cationic polymerization of isobutene... | 10/30/2007 |
| 7271302 | Method for brominating organic compounds The present invention relates to processes for the bromination of organic compounds, and to bromination microreactors for carrying out these processes. ... | 09/18/2007 |
| 7268211 | Removal of ruthenium by-product by supercritical fluid processing A process for removing ruthenium or ruthenium-containing compounds from a reaction mixture comprising a compound of the following formula I in an organic solvent using supercritical fluid processing techniques: w... | 09/11/2007 |
| 7255927 | Laminate composition This invention concerns a thermosetting resin system that is useful in the manufacture of high performance prepreg, laminate and composite materials as well as, prepregs, laminates and composites made from the thermosetting resin composition. ... | 08/14/2007 |
| 7179950 | Bromination process This invention relates to a novel process which comprises feeding a mixture formed from diphenylethane and bromine to a stirrable reaction mass comprised of bromine and a bromination catalyst to yield a decabromodiphenylethane wet cake which can be most economically... | 02/20/2007 |
| 7138554 | Synthesis of (dibromocyclobuta) aromatic compounds A method for the synthesis of cyclobuta aromatic compounds by cyclizing two ortho dibromoalkyl substituents is described. Using a mediator, such as nickel metal, and continuous removal of product from contact with the mediator, high product yields are achieved. A me... | 11/21/2006 |
| 7138555 | Process for preparing iodoaromatic compounds and using the same The present invention provides a process for preparing monoiodinated aromatic compounds that are useful as intermediates for preparing charge transporting and hole transporting amino compounds and have high purity with high yield and at low cost. A process for prepa... | 11/21/2006 |
| 7129385 | Poly(bromoaryl)alkane additives and methods for their preparation and use An additive mixture useful as a flame retardant is described. The mixture is comprised of (i) a poly(bromophenyl)alkane having in the molecule in the range of 13 to 60 carbon atoms and in the range of two to four aryl groups and (ii) a poly(bromophenyl)bromoalkane h... | 10/31/2006 |
| 7102042 | Method for producing substituted fluorene monomers A method for preparing a composition of the formula in a yield greater than 50% where R1 is C 1-20 comprising the steps of combining fluorene or dibromo flourene, an excess of alkali metal hydroxide and a ha... | 09/05/2006 |
| 7084317 | Oxidative halogenation of aromatic compound A process for the halogenation of an aromatic compound wherein the aromatic compound is admixed with a halogenating agent in the presence of an ionic liquid is described. The method in preferably halide, sulfur or nitrate ionic liquids has significant advantages ove... | 08/01/2006 |
| 7060862 | Method for the preparation of α,α,α′,α′-tetrachloro-p-xylene with high purity A method of synthesizing a high purity product of α,α,α′,α′-tetrachloro-p-xylene is disclosed. The method includes carrying out a first stage reaction of terephthaldicarboxaldehyde with a mixture of SOCl2 and dimethylformamide (DMF) to obtain a pr... | 06/13/2006 |
| 7041859 | Method for halogenating or radiohalogenating a chemical compound A method for obtaining a halogenated organic compound, whereby an organotrifluoroborate compound is reacted with a halide ion in the presence of an oxidizing agent to produce the corresponding halogenated organic compound. The method may be used for producing radioh... | 05/09/2006 |
| 6992231 | Method for the preparation of α,α, α′,α′-tetrachloro-p-xylene A synthesis method of α,α,α′,α′-tetrachloro-p-xylene is disclosed. The method includes reacting terephthaldicarboxaldehyde with a mixture of SOCl2 and dimethylformamide (DMF) to obtain a product mixture containing α,α,α′,α′-tetrachloro-p-x... | 01/31/2006 |
| 6974887 | Bromination process This invention relates to a novel process which comprises feeding a mixture formed from diphenylethane and bromine to a stirrable reaction mass comprised of bromine and a bromination catalyst to yield a decabromodiphenylethane wet cake which can be most economically... | 12/13/2005 |
| 6956142 | Process for eco-friendly synthesis of bromobenzene A new eco-friendly process is described in the present invention for the preparation of bromobenzene through substitution of one of the C—H proton of benzene ring with a highly reactive hypobromous acid generated in situ, said process comprises the steps of activa... | 10/18/2005 |
| 6872861 | Process for preparing polyfluoroalkylithium compounds The invention relates to a process for preparing polyfluoroalkyl-lithium compounds by deprotonation of polyfluoroalkyl compounds by means of lithium bases. ... | 03/29/2005 |
| 6861566 | Process for producing 1-chloro-4-arylbutane There is provided an industrially advantageous process for producing a 1-chloro-4-arylbutane represented by the general formula (2): wherein R represents hydrogen, lower alkyl, or lower alkoxy, characterized by reactin... | 03/01/2005 |
| 6841707 | Method and apparatus for producing decabromodiphenyl alkanes A method of producing decabromodiphenyl alkanes includes the steps of charging a reaction vessel with bromine and a bromination catalyst and introducing a diphenyl alkane into the vessel at a location above the level of the charge bromine and catalyst. A dip tube ap... | 01/11/2005 |
| 6835860 | Iodohydroxylation of olefins Iodohydroxylated olefins can be prepared by treating an olefin with an aqueous solution of an iodine monohalide selected from iodine monochloride and iodine monobromide. ... | 12/28/2004 |
| 6825383 | Catalytic process for regiospecific chlorination of alkanes, alkenes and arenes The present invention provides a process for regiospecific chlorination of an aromatic or aliphatic compound with a chlorine source comprising a metal chloride and other than Cl2 and SO2Cl2 in presence of hypervalent iodine catalyst ... | 11/30/2004 |
| 6822128 | Flow control in a three-phase monolithic catalyst reactor A method is disclosed for maintaining a volumetric gas to liquid ratio in a segmented gas/liquid flow along a reactor of monolithic catalyst beds in series. The present invention includes the steps of: initiating the segmented gas/liquid flow at a first end of the r... | 11/23/2004 |
| 6822129 | Method of converting aromatic compound A method for isomerizing aromatic compounds, wherein at least one aromatic compound is contacted with a zeolite-containing catalyst, and in which the zeolite is characterized in that: (1) the minimum value of the pore aperture diam... | 11/23/2004 |
| 6781021 | Method for isomerizing halogenated aromatics A catalyst composition with a high halogenated aromatics isomerization activity, a halogenated aromatic isomerization method using said catalyst composition, and a halogenated aromatics isomerization method capable of prolonging the life or regeneration period of th... | 08/24/2004 |
| 6774270 | Method of removing hexafluoropropylene dimers A method of removing hexafluoropropylene dimers (“HFP dimers”), dimer hydrides and other oligomers from a fluid is described. The method comprises heating the fluid to isomerize the HFP dimers to the thermodynamic isomer, and contacting the fluid with a tertiary... | 08/10/2004 |
| 6768033 | Bromination process This invention relates to a novel process which comprises feeding a mixture formed from disphenylethane and bromine to a stirrable reaction mass comprised of bromine and a bromination catalyst to yield a decabromodiphenylethane wet cake which can be most economicall... | 07/27/2004 |
| 6756513 | Process for preparing monochlorinated hydrocarbons having a high isomeric purity Monochlorinated hydrocarbons of high isomeric purity are prepared by a process, which comprises: reacting a monoalcohol having an alkyl radical having from 3 to 20 carbon atoms with cyanuric chloride; and purifying the resulting monochlorinated hydroca... | 06/29/2004 |
| 6603049 | Bromination process This invention relates to a novel process which comprises feeding a mixture formed from diphenylethane and bromine to a stirrable reaction mass comprised of bromine and a bromination catalyst to yield a decabromodiphenylethane wet cake which can be most e... | 08/05/2003 |
| 6528692 | Process for producing bromo-aromatic condensed ring compound Provided is a process for producing a bromo-aromatic condensed ring compound which comprises reacting an aromatic condensed ring compound in which the number of carbon atom constituting the aromatic condensed ring is 15 or more with a N-bromo carboxylic a... | 03/04/2003 |
| 6518468 | Bromination process This invention relates to a novel process which comprises feeding a mixture formed from diphenylethane and bromine to a stirrable reaction mass comprised of bromine and a bromination catalyst to yield a decabromodiphenylethane wet cake which can be most e... | 02/11/2003 |
| 6399835 | Process for electrophilic aromatic substitution Processes for the electrophilic substitution of aromatic compounds, such as alkylation, with a desired substituent are disclosed. The processes include contacting the aromatic compound, a precursor of the desired substituent and an aqueous reagent contain... | 06/04/2002 |
| 6380445 | Poly(9,9'-spirobisfluorenes), their production and their use Soluble poly(bis-9,9'-fluorenes) comprise identical or different structural repeating units of the formula I, ##STR1## where the two R1 s are, independently of one another, H, C1 -C18 alkyl, C6 -C14 a... | 04/30/2002 |
| 6271421 | Process for selective mono-debromination of polybromoalkyl aryl or heteroaryl ketones A process for selectively debrominating polybromoalkyl aryl ketones and polybromoalkyl heteroaryl ketones is disclosed. The process comprises contacting an alpha-polybrominated ketone with an alkali metal sulfite in the presence of a C2 -C... | 08/07/2001 |
| 6147049 | Tetra-hydronaphthalenes The present invention provides compounds of formula I: ##STR1## wherein R1 is hydrogen or methyl and R2 is alkyl. These compounds are useful as fixatives in fragrance compositions. Processes of making such compounds are also pro... | 11/14/2000 |
| 6066766 | Process for the preparation of 4-chlorobiphenyls 4-Chlorobiphenyls are prepared by reacting a haloaromatic with an aryl Grignard compound, where halogen is chlorine, bromine or iodine, in the presence of a palladium catalyst of the formula (IV) ##STR1##... | 05/23/2000 |
