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| Number | Title | Issue Date |
| 7994372 | Parylene variants and methods of synthesis and use Fluorinated paracyclophane compounds represented by the formula: where least one of R1 and R2 comprises a fluorinated moiety is disclosed. These compounds can be utilized as precursor dimer compounds to produce polymeric co... | 08/09/2011 |
| 7078465 | Process to bromomethylate aromatic compounds The present invention provides a process for bromomethylation of organic compounds, wherein said process is a two stage process comprising of the following stages: a) reacting paraformaldehyde with hydrogen bromide and separating bis-bromomethyl ether (BBME) from th... | 07/18/2006 |
| 6979426 | Biodiesel production unit In a first aspect, systems and methods for producing biodiesel fuel include a modular production unit incorporated onto a single platform or into a housing for ease of relocatability. The modular production unit preferably includes a mixing unit, a reactor unit, a s... | 12/27/2005 |
| 5741949 | Continuous bromination process and products thereof A preferred process for producing a brominated, non-fused aromatic composition involves a continuous bromination in a continuous, mixed reactor such as a continuous stirred tank reactor. Bromine and the aromatic substrate, and optionally a bromination cat... | 04/21/1998 |
| 5194672 | Process for the preparation of substituted styrenes A process for preparing a substituted styrene by reacting a bisarylalkyl ether in the presence of an acid catalyst is disclosed. The process is preferably used for the preparation of 4-acetoxystyrene from 4,4'-(oxydiethylidene)bisphenol diacetate and 4-me... | 03/16/1993 |
| 5186864 | Synthesis of dielectric liquids by improved Friedel-Crafts condensation Dielectric liquids are prepared by (a) Friedel-Crafts condensing at least one aromatic halide with at least one aromatic compound in the presence of a catalytically effective amount of ferric chloride, and thereafter deliberately avoiding any downstream d... | 02/16/1993 |
| 5113020 | Process for producing p-halogenobenzophenone derivatives The present invention provides a process for producing a p-halogenobenzophenone derivative of a high purity in a high yield at a low cost in the presence of a repeatedly usable catalyst having a long life and free from the problem of waste water treatment... | 05/12/1992 |
| 5030777 | Synthesis of 3,5-dichloroalkylbenzene and recovery of 1,3-dichlorobenzene A process for synthesizing 3,5-dichloroalkylbenzene and recovering 1,3-dichlorobenzene from a starting mixture of 1,3- and 1,4-dichlorobenzenes. The process includes the sequential steps of selectively alkylating the 1,3-dichlorobenzene in the starting mi... | 07/09/1991 |
| 4898998 | Process for producing brominated acenaphthylene condensates A process for producing brominated acenaphthylene condensates of the formula: ##STR1## wherein x is 1 or 2, y is an integer from 1 to 6 and n is 1 or more, from elementary units of the following formulas: ##STR2## wherein y is as defined ab... | 02/06/1990 |
| 4880553 | Methylene linked aromatic pour point depressant Compositions useful as pour point depressants, novel compounds within such compositions, and processes for making same, as well as lubricant oil compositions containing same, are disclosed. The novel compounds are encompassed by the general structural for... | 11/14/1989 |
| 4816608 | Process for the preparation of (2,2)-paracyclophane and derivatives thereof Process for the preparation of (2,2)-paracyclophane or derivatives thereof by the Hofmann elimination of p-methylbenzyl-trimethylammonium hydroxide or derivatives thereof, in an aqueous solution of an alkali metal hydroxide, wherein said elimination is ca... | 03/28/1989 |
| 4753745 | Methylene linked aromatic pour point depressant Compositions useful as pour point depressants, novel compounds within such compositions, and processes for making same, as well as lubricant oil compositions containing same, are disclosed. The novel compounds are encompassed by the general structural for... | 06/28/1988 |
| 4568782 | Preparation of indenes Disclosed is the vapor phase cyclodehydration of an aldehyde or ketone over a solid Lewis acid as catalyst to make indene or a substituted indene according to the equation: ##STR1##... | 02/04/1986 |
| 4554360 | Process for converting aromatic compounds Provided is a process for converting an aromatic compound to prepare an iodoarene, Ar--I, and an aryl compound which is a compound wherein an unsaturated compound is bonded directly to an aryl group, Ar, which process comprises reacting a diaryliodonium s... | 11/19/1985 |
| 4447650 | Methylene coupling of aromatics Methylene coupled aromatic compounds are prepared by contacting an aromatic reactant having a reactive hydrogen with chloromethyl methyl carbonate at a temperature from about 25° C. to about 250° C. in the presence of a catalytic amount of a Lewis acid.... | 05/08/1984 |
| 4438027 | Chlorinated alkylaromatic based compounds and new liquid dielectrics New compounds of the formula: ##STR1## where n, x, y and z have value 1 or 2, their process of preparation and their use as dielectrics such as insulating fluids for transformers alone or in mixture with one or more products of general formula: ... | 03/20/1984 |
| 4358409 | Preparation of styryl cyclopropane insecticide intermediates Styryl-cyclopropane derivatives of the formula ##STR1## in which R9 represents independently of one another when n=2, halogen, cyano, nitro, or an optionally halogen-substituted alkyl, alkoxy, alkylthio or alkylenedioxy radical, n represen... | 11/09/1982 |
| 4117019 | Manufacture of o-benzyltoluenes A process for the manufacture of o-benzyltoluenes by reaction of o-xylyl halides with benzenes in the presence of sulfuric acid or in the presence of phosphoric acid and adjuvants or in the presence of sulfuric acid and adjuvants. The products are startin... | 09/26/1978 |
| 4075238 | Polyhalobenzylic disulfooxonium compounds Polyhalobenzylic disulfooxonium compounds are produced by the reaction of aromatic methyl, halomethyl or hydroxymethyl substituents with sulfur trioxide. The disulfooxonium salts are readily converted to alcohols by hydrolysis to provide monomers for the ... | 02/21/1978 |
| 3978144 | Manufacture of o-benzyltoluenes The manufacture of o-benzyltoluenes by reaction of o-xylyl halides with benzenes in the presence of boron trifluoride or its derivatives, and new o-benzyltoluenes. The new and known o-benzyltoluenes I manufactured by the process of the invention are start... | 08/31/1976 |
