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| Number | Title | Issue Date |
| 7358030 | Process for producing ether compound The present invention provides the following process for production of an ether compound, which is useful for chemical amplification type resist compositions, synthetic intermediates of pharmaceuticals, paints, or the like, with less side reaction and in high yield.... | 04/15/2008 |
| 7282470 | Decontamination formulation with sorbent additive A decontamination formulation and method of making that neutralizes the adverse health effects of both chemical and biological compounds, especially chemical warfare (CW) and biological warfare (BW) agents, and toxic industrial chemicals. The formulation provides so... | 10/16/2007 |
| 7276573 | Method for producing monoesters and diesters of polytetrahydrofuran and of tetrahydrofuran copolymers The present invention provides a process for preparing mono- or diesters of polytetrahydrofuran or of tetrahydrofuran copolymers by polymerizing tetrahydrofuran in the presence of at least one telogen and/or of a comonomer over an acidic catalyst, wherein the polyme... | 10/02/2007 |
| 7253305 | Tertiary alkyl acetate preparation Esters are formed by reaction of acetic anhydride with tertiary butyl or tertiary anyl alcohol in the presence of tertiary amine catalyst such as DMAP or NMI catalyst and acetic acid in amount sufficient to present catalyst degradation; in preferred practice a mixed... | 08/07/2007 |
| 7230147 | Process for functionalizing a double bond The invention concerns a method for functionalizing a double bond and, more particularly, a double bond bearing a metalloid atom. Said functionalization is produced by the action of perhalogenated sulphonyl chloride on the carbon bearing sulphur in the presence of a... | 06/12/2007 |
| 7118920 | Multiphasic microchannel reactions Multiphasic reactions, especially those reactions using a phase transfer catalyst, are conducted in microchannel apparatus. Advantageously, these reactions can be conducted with two, planar microlayers of reactants in adjacent laminar flow streams. Microchannel appa... | 10/10/2006 |
| 7005537 | Production of esters Disclosed is a process for the production of esters. In particular, the process includes contacting an olefin or an ether with carbon monoxide and an acid composition comprising BF3.2CH3OH to from a product composition, adding an alcohol to the... | 02/28/2006 |
| 6958413 | Method of reaction with soluble metallic catalyst and anion-exchange resin, method of recovering the soluble metallic catalyst, and method of reuse The invention provides a method of liquid-phase reaction using a soluble metallic catalyst in which the soluble metallic catalyst is caused to coexist with an anion-exchange resin during the reaction and the reaction is conducted under such conditions that 50% or mo... | 10/25/2005 |
| 6800780 | Method for producing carboxylic acid benzyl esters Disclosed herein is a process for the preparation of carboxylic acid benzyl esters from dibenzyl ethers, comprising reacting dibenzyl ethers with carboxylic acids in the presence of a homogeneous acidic catalyst. ... | 10/05/2004 |
| 6765116 | Process of preparing a fluid rare earth alkoxylation catalyst A process to prepare an improved fluid rare earth phosphate catalyst composition useful in preparing alkylene oxide adducts of organic compounds having active hydrogen atoms is provided. The catalyst is prepared by dissolving a rare earth salt in a C9-C | 07/20/2004 |
| 6723872 | Production process for hydroxyalkyl ester The present invention provides: a process in which, when a hydroxyalkyl ester is produced by carrying out a reaction between a carboxylic acid and an alkylene oxide in the presence of a catalyst, the contamination of the hydroxyalkyl ester with water can be inhibite... | 04/20/2004 |
| 6680406 | Sol-gel derived porous microcomposite of perfluorinated ion-exchange polymer and metal oxide Porous microcomposites have been prepared from perfluorinated ion-exchange polymer and metal oxides such as silica using the sol-gel process. Such microcomposites possess high surface area and exhibit extremely high catalytic activity.... | 01/20/2004 |
| 6646145 | Processes for preparing alkoxylated nonionic surfactants using hydrotalcite catalysts Processes for preparing alkoxylated nonionic surfactants are disclosed, wherein a compound having at least one active hydrogen atom, a carboxylic acid ester or mixtures thereof are reacted with an alkylene oxide in the presence of a hydrotalcite catalyst ... | 11/11/2003 |
| 6600064 | Process for the preparation of hydroxybenzoic benzyl esters The invention relates to a process for the preparation of hydroxybenzoic benzyl esters by reacting dibenzyl ethers with alkylcarbonyloxybenzoic or alkoxycarbonyloxybenzoic acids and optionally anhydrides thereof in the presence of one or more acids as cat... | 07/29/2003 |
| 6593491 | Production of tertiary butyl acetate Disclosed is a process for the production of t-butyl acetate and coproduction of methyl acetate or ethyl acetate, directly from MTBE or ETBE, by contacting a mixture of acetic acid, acetic anhydride, and MTBE, or alternatively, ETBE, with an acid catalyst... | 07/15/2003 |
| 6559278 | Method for producing tetrahydrofuran polymers The invention relates to a method for continuously or discontinuously producing tetrahydrofuran polymers by homopolymerization of tetrahydrofuran, alkyl-substituted tetrahydrofurans and/or alkylene oxides in the presence of carboxylic acid anhydrides or c... | 05/06/2003 |
| 6555703 | Process for the preparation of carboxylic acid benzyl esters The invention relates to a process for forming a carboxylic benzyl ester comprising reacting a dibenzyl ether with a carboxylic acid in the presence of a heteropolyacid and forming a carboxylic acid benzyl ester.... | 04/29/2003 |
| 6465682 | Production process for hydroxyalkyl ester In a production process for a hydroxyalkyl ester, comprising the step of carrying out a reaction between a carboxylic acid and an alkylene in the presence of a catalyst, the present invention is to provide: a production process which can stop the reaction... | 10/15/2002 |
| 6414182 | Production process for hydroxyalkyl ester The present invention provide a production process for a hydroxyalkyl ester which comprises the step of carrying out a reaction between a carboxylic acid and an alkylene oxide in the presence of a catalyst, wherein the production process sufficiently enha... | 07/02/2002 |
| 6403842 | Processes for producing poly(alkylene ether) glycol Disclosed are a process for producing a poly(alkylene ether) glycol which comprises polymerizing a cyclic ether in the presence of at least a catalyst and a carboxylic acid anhydride, wherein the carboxylic acid anhydride has a ketene dimer content of 50 ... | 06/11/2002 |
| 6362312 | Catalyst and method for the production of polytetrahydrofuran In a process for preparing polytetrahydrofuran, polytetrahydrofuran copolymers or diesters or monoesters thereof comprises polymerizing tetrahydrofuran in the presence of at least one telogen and/or comonomer over an acid-activated calcium montmorillonite... | 03/26/2002 |
| 6348623 | Polymers of 3-butene esters, their preparation and use The specification describes various polymers having monomer of formula (I): ##STR1## In formula (I), R1 and R2 are, independently, hydrogen, a C1 -C24 alkyl group, an aromatic or heteroaromatic group, a C3 -C8 c... | 02/19/2002 |
| 6274700 | Catalyst and method for producing polytetrahydrofuran In a process for preparing polytetrahydrofuran, polytetrahydrofuran copolymers or diesters or monoesters thereof by polymerization of tetrahydrofuran in the presence of at least one telogen and/or comonomer over acid-activated montmorillonite catalysts, t... | 08/14/2001 |
| 6211401 | Process for preparing polytetrahydrofuran Polytetrahydrofuran, tetrahydrofuran copolymers, diesters or monoesters of these polymers are prepared by polymerizing tetrahydrofuran in the presence of at least one telogen and/or comonomer on a heterogeneous carrier catalyst which contains on an oxidic... | 04/03/2001 |
| 6130346 | Process for preparing an organic compound from an oxirane-containing compound in the presence of a tris(triaminophosphoranylideneamino)phosphine oxide A process for preparing an organic compound, comprising conducting an organic reaction in the presence of a phosphine oxide represented by formula (1); ##STR1## where R1 is the same or different and each represents a hydrogen or hydro... | 10/10/2000 |
| 6111147 | Process for preparing polytetrahydrofuran and derivatives thereof Polytetrahydrofuran, copolymers of tetrahydrofuran and 2-butyne-1,4-diol, diesters of these polymers with C2 -C20 -monocarboxylic acids or monoesters of these polymers with C1 -C10 -monocarboxylic acids are prep... | 08/29/2000 |
| 6069226 | Process for the preparation of polytetramethylene ether glycol diester using an aluminosilicate type catalyst Polytetramethylene ether glycol diester of the formula ##STR1## wherein R and R1 are identical or different and are alkyl radicals having 1-4 carbon atoms, and n is an integer from 2 to 200, are prepared by polymerizing tetrahydrofuran in ... | 05/30/2000 |
| 5962727 | Method for manufacturing diacetate esters of polytetramethylene ethers An improved method for manufacturing diesters of polytetramethylene ethers involving the polymerization of tetrahydrofuran (THF) optionally with one or more comonomers (e.g., 3-methyl THF, ethylene oxide, propylene oxide, or the like) utilizing a solid ac... | 10/05/1999 |
| 5952458 | Process for preparing a vinyl terminated polymer Synthesis of a vinyl terminated polymer by reacting a cationically polymerizable monomer in the form of a cyclic ether with an acid chloride in a suitable solvent and in the presence of a Lewis acid. The vinyl-terminated polymers can be polymerized with o... | 09/14/1999 |
| 5907054 | Process for the polymerization of cyclic ether The present invention provides a process for the production of an ester of polyoxyalkylene glycol on an industrially favorable basis which comprises the ring opening polymerization of a cyclic ether in the presence of a carboxylic anhydride and a solid ac... | 05/25/1999 |
| 5886138 | Process for the preparation of tetrahydrofuran polymers A process for the continuous and discontinuous production of tetrahydrofuran polymers by homopolymerizing tetrahydrofuran or copolymerizing tetrahydrofuran with 1,2-alkylene oxides in the presence of compounds with reactive hydrogen or carboxylic acid anh... | 03/23/1999 |
| 5852208 | Method of producing compounds containing acyloxyalkoxy groups from alcohols A process of producing compounds containing an acyloxyalkoxy group from an alcohol consists of reacting the alcohol with a formaldehyde donor until a compound of the formula: R--O--CH2 (OCH2)X OR (V) is g... | 12/22/1998 |
| 5773648 | Preparation of polytetrahydrofuran A process for the preparation of polytetrahydrofuran or polytetrahydrofuran monoesters of C1 -C10 monocarboxylic acids by the polymerization of tetrahydrofuran over a heterogeneous catalyst in the presence of one of the telogens wate... | 06/30/1998 |
| 5684179 | Method for recovering diacetate esters of polytetramethylene ethers An improved method for recovering purified diesters of polytetramethylene ethers involving the polymerization of tetrahydrofuran (THF) optionally with one or more comonomers (e.g., 3-methyl THF, ethylene oxide, propylene oxide, or the like) utilizing a so... | 11/04/1997 |
| 5663422 | Process for the production of 1,2-diacetoxy esters A process for the preparation of a 1,2-diacetoxy ester comprises acetylation of an epoxide with an acetic anhydride in the presence of a quaternary phosphonium acetate catalyst or its complex with acetic acid.... | 09/02/1997 |
| 5659073 | Process for making glycol ether acetates Disclosed is a method of making a glycol ether acetate. Acetic acid is reacted with a glycol ether at a molar ratio of about 1.1 to about 2, in a mixture with a catalyst and an azeotropic agent which can be either butyl acetate or dibutyl ether. The mixtu... | 08/19/1997 |
| 5659068 | Preparation of polyoxyalkylene glycol monoesters of monocarboxylic acids Polyoxyalkylene glycol monoesters of carboxylic acids are prepared by a process in which tetrahydrofuran or a mixture of tetrahydrofuran with a total of not more than 95 mol %, based on the amount of tetrahydrofuran used, of one or more comonomers from th... | 08/19/1997 |
| 5648558 | Method for producing a polyoxyalkylene glycol and novel metallo-aluminosilicate A method for producing a polyoxyalkylene glycol by ring opening polymerization of a cyclic ether, wherein a zeolite (other than ZSM-5, ZSM-11 and Nu-5) is used as a catalyst.... | 07/15/1997 |
| 5641857 | Preparation of polytetrahydrofuran Polytetrahydrofuran or polytetrahydrofuran monoesters of C1 -C20 -monocarboxylic acids or polytetrahydrofuran monoethers of monohydric C1 -C20 -alcohols, having an average molecular weight of from 250 to 10,000 ... | 06/24/1997 |
| 5623086 | Process for the production of 1,2-bis (acyloxylates) A process for the preparation of 1,2-bis(acyloxyates) comprises acylation of epoxides with carboxylic anhydrides in the presence of a catalytic composition containing a tertiary amine and a carboxylic acid. Preferably, the carboxylic acid is a conjugate a... | 04/22/1997 |
