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| Number | Title | Issue Date |
| 6444842 | Continuous process for the production of carboxylic acid esters of alkylene glycol monoalkyl ethers The present invention provides an improved method for the preparation of carboxylic acid esters of alkylene glycol monoalkyl ethers by the acid catalyzed esterification of the monoalkyl ether with a carboxylic acid. In a preferred embodiment of the invent... | 09/03/2002 |
| 6425966 | Energetic plasticizer, and explosive and propellant composition containing same 2,2-dinitro-1,3-propanediol-diformate is a novel low sensitivity, energetic plasticizer that is useful in explosive and propellant compositions. 2,2-dinitro-1,3-propanediol-diformate can be made by reacting 2,2-dinitro-1,3-propane diol with acetic formic ... | 07/30/2002 |
| 6271413 | Process for producing polytetramethylene ether glycol diester on aluminium magnesium silicate catalysis An improved process for the preparation of polytetramethylene ether glycol diesters of the formula R--CO--O(--CH2 -CH2 -CH2 -CH2 -O)n -COR1 in which R and R1 are identical or different and... | 08/07/2001 |
| 6254973 | Fluorine-containing polyfunctional (meth) acrylate, fluorine containing monomer composition, low refractivity material, and reflection reducing film Fluorine-containing polyfunctional (meth)acrylate represented by the formula (1), a monomer composition containing the (meth)acrylate, a low refractivity material prepared by curing the monomer composition, and a reflection reducing film provided with the... | 07/03/2001 |
| 6218536 | 1,2-bis-adducts of stable nitroxides with substituted ethylenes and stabilized compositions 1,2-Bis-adducts of stable hindered nitroxide compounds with substituted ethylenes are prepared by reacting two equivalents of nitroxyl compound with an ethylenically unsaturated compound such as styrene or an acrylate ester. These adducts are very effecti... | 04/17/2001 |
| 6124270 | Use of a cationic amphipathic compound as a transfection agent, vaccine additive or drug A cationic amphipathic compound of formula (I), ##STR1## wherein A is a single bond, an NH--R' grouping or (a), wherein --R'-- is a straight or branched, optionally substituted, saturated or unsaturated C1-22 aliphatic chain optionally int... | 09/26/2000 |
| 6040475 | Intermediate compounds for making metabolites of lycopene This invention is concerned with the synthesis of 3-(1-acetoxy-1-methylethyl)-6-oxo-heptanal; 3-(1-acetoxy-1-methylethyl)-2-formyl-1-methyl-cyclopentanol; 5-[2-hydroxy-5-(1-hydroxy-1-methylethyl)-2-methyl-2-cyclopentyl]-3-methyl- penta-2,4-dien-1-ol a... | 03/21/2000 |
| 5986122 | Treatment of polyethers prior to hydrosilylation This Invention discloses the use of ascorbic and citric acid, their salts, ethers, acid esters and mixtures thereof in a method for the prevention of peroxide formation, and/or for decomposing peroxides already formed in polyethers. Hereby, the polyethers... | 11/16/1999 |
| 5976202 | Reaction products of polyolefins with vinyl esters and their use as fuel and lubricant additives Reaction products of polyolefins having predominantly a terminal double bond and a number average molecular weight of from 250 to 10,000, which possess an aliphatic hydrocarbon skeleton which is straight-chain or carries C1 -C4 -alky... | 11/02/1999 |
| 5959058 | Coatings based on fluoropolyethers Use of fluorinated polymers based on fluoropolyethers for the preparation of crosslinkable high dry formulations comprising a fluorinated part RF and optionally an hydrogenated part RH, not containing groups capable of linking by mea... | 09/28/1999 |
| 5886215 | 2-acetoxymethyl-4-halo-butyl-1-yl acetates The present invention provides a process for the synthesis of penciclovir and famciclovir by 9-substituting 2-amino-6-chloropurine (ACP) with an appropriate side chain precursor, followed by conversion of the 6-chloro moiety to a hydroxy moiety (i.e. to f... | 03/23/1999 |
| 5770739 | Non-aqueous hydrogen peroxide complex An apparatus and process for hydrogen peroxide vapor sterilization of medical instruments and similar devices make use of hydrogen peroxide vapor released from a substantially non-aqueous organic hydrogen peroxide complex, such as a urea-peroxide complex.... | 06/23/1998 |
| 5675040 | Process for the preparation of sulphones The invention relates to a process for the preparation of compounds of the formula ##STR1## characterized in that the radical X in sulphones of the formula X--(CH2 --CH2 --O)m --(CH2)n --SO2 | 10/07/1997 |
| 5565439 | Methods of using lysophosphatidic acid for treating hyperproliferative conditions The subject invention involves a method for treating hyperproliferative conditions in mammalian epithelial cells comprising administering to the mammal a composition containing a safe and effective amount of a lysophosphatidic acid compound or derivative ... | 10/15/1996 |
| 5532380 | R,R,S,S-2-nitroimidazole derivatives High purity 2-nitroimidazole derivatives having excellent radiosensitivity and high safety and useful as a drug to be used along with radiotherapy of various cancers can be prepared at a high yield from inexpensive diester of tartaric acid according to th... | 07/02/1996 |
| 5453468 | Prepolymers containing a perfluoropolyethereal chain and carboxylic end groups, suitable as cross-linking agents for epoxy prepolymers The invention relates to two classes of prepolymers containing a perfluoropolyethereal chain and carboxylic end groups, suitable as cross-linking agents for epoxy prepolymers. The first class contains anhydride-derived end groups; the second lactone-deriv... | 09/26/1995 |
| 5308512 | Thiodiglycol alkoxylate derivatives, a process for their production and their use as fabric softeners The process of producing alkoxylated thiodiglycol sulfoxide derivatives and thiodiglycol sulfone derivatives corresponding to formula I ##STR1## wherein X1 and X2 may be the same or different and represent a hydroxyl-substituted... | 05/03/1994 |
| 5155260 | Process for the preparation of 2,2-dimethyl-5-(2,5-dimethyl-phenoxy)-pentanoic acid, intermediates for preparing this compound and process for preparing the intermediates The invention relates to an improved process for the preparation of 2,2-dimethyl-5-(2,5-dimethylphenoxy)-pentanoic acid of Formula (I) ##STR1## which comprises reacting an ester of the general Formula (X) ##STR2## wherein X represents halogen an... | 10/13/1992 |
| 5004569 | Process for the production of carboxylic acid esters The invention relates to a process for the production of carboxylic acid esters from carboxylic acids and alcohols which is characterized in that neutral phosphites containing oxetane groups are used as esterification catalysts.... | 04/02/1991 |
| 4970295 | Preparation of oxetane polyether polyols using a bleaching earth catalyst A process for the preparation of polyethers is disclosed in which an oxetane monomer, or a mixture of an oxetane monomer and an oxolane monomer, and a carboxylic acid anhydride are contacted with a bleaching earth catalyst. The process yields ester-termin... | 11/13/1990 |
| 4929775 | Process for preparing brominated pentaerythritols This invention relates to a process for preparing high purity dibromoneopentyl glycol which comprises: (a) charging a vessel with pentaerythritol, a first portion of aqueous HBr and a catalyst; (b) maintaining the liquid contents in the vessel at a temper... | 05/29/1990 |
| 4913848 | Process for producing a high purity dibromoneopentyl glycol product This invention relates to a process for treating a first product which contains monobromopentaerythritol, dibromoneopentyl glycol and tribromoneopentyl alcohol to yield a second product having a dibromoneopentyl glycol content, on a weight percent basis, ... | 04/03/1990 |
| 4870205 | Preparation of phenoxy-substituted esters and intermediates therefor Compounds of the formula I ##STR1## where A is C1 -C4 -alkyl, phenyl or C7 -C12 -aralkyl and l is 0 or 1, R2 is C1 -C4 -alkyl, n is 0, 1, 2 or 3, m is 1, 2 or 3 and Y is hyd... | 09/26/1989 |
| 4865774 | Surface-active hydroxysulfonates Aqueous solutions of surface-active hydroxysulfonates are obtained by reaction of unsaturated fatty alkenyl or fatty alkenyl polyalkoxyl esters, for example of oleyl acetate or oleyl polyethoxyl acetate, with sulfur trioxide, introduction of the reaction ... | 09/12/1989 |
| 4812582 | Process for preparing aldol intermediates This invention pertains to a new method for killing and controlling worms (Helminths), new formulations for killing and controlling worms in animals, new chemical compounds, and a new synthesis of northern hemisphere intermediates for the synthesis of mil... | 03/14/1989 |
| 4808572 | -Hydroxy thioethers Novel asymmetric thioethers of the formula ##STR1## in which the general symbols have the following meanings: a is an integer of from 1 to 7, Ro represents hydrogen or C1-7 -alkanoyl, R1 represents C1-3 -alkyl w... | 02/28/1989 |
| 4782173 | Synthesis of methionine hydroxy analog or derivative, and esters thereof; synthesis of 1-acyloxy-4-hydrocarbylthiopropene, and products Discloses (1) reacting a 3-(hydrocarbylthio) propionaldehyde with a compound ##STR1## (2) reacting latter compound with CO and R"YH where y is O or S to make (3) hydrolyzing this compound; (4) certain new 1-acyloxy-3-methylthiopropenes and (5) t... | 11/01/1988 |
| 4729839 | Water soluble lubricating additives A method for preparing a water soluble lubricating additive having the generic structural formula: ##STR1## wherein R1 is an alkyl, cycloalkyl, aryl, alkaryl or aralkyl group having from 1 to 34 carbon atoms; R2, R3 a... | 03/08/1988 |
| 4680419 | Spiroketals and process for preparing same This invention pertains to a new method for killing and controlling worms (Helminths), new formulations for killing and controlling worms in animals, new chemical compounds, and a new synthesis of northern hemisphere intermediates for the synthesis of mil... | 07/14/1987 |
| 4654174 | Preparation of aliphatic anhydrides and alkylidene dicarboxylates from divinyl ethers and carboxylic acids The invention disclosed herein is a process for preparing aliphatic anhydrides comprising contacting a divinyl ether with carboxylic acid in the presence of a catalytic amount of a strong acid. The invention is further a process for preparing alkylidene d... | 03/31/1987 |
| 4647413 | Perfluoropolyether oligomers and polymers Perfluoropolyether oligomers or block polymers, having a backbone with one or a plurality of perfluoropolyether segments each consisting essentially of (1) at least one perfluoroisopropyleneoxy unit, (2) a bis(perfluoromethyleneoxy-terminated) unit, and (... | 03/03/1987 |
| 4546200 | 2,2-Dinitrobutane-1,4-diol and monoesters 2,2-Dinitrobutane-1,4-diol and 4-monoesters thereof.... | 10/08/1985 |
| 4540828 | Catalysts for alkoxylation reactions Catalysts and a method of using said catalysts for the alkoxylation of a variety of materials is disclosed. Catalysts so described produce alkoxylates having a very sharp alkoxylate distribution. The catalysts are supported and unsupported dialkoxy and di... | 09/10/1985 |
| 4472294 | Fluorine-containing compounds, and surface-tension lowering agent containing same A fluorine-containing compound of the formula: ##STR1## wherein Rf is a C3 -C21 fluorine-containing group; R is a hydrogen atom or a C1 -C4 acyl group; Q is an aliphatic or aromatic hydrocarbon group having... | 09/18/1984 |
| 4469703 | Nitroalkanol derivatives and plant protecting agents containing the same The invention relates to nitroalkanol derivatives of the general formula (I), ##STR1## wherein R1 is a C2-12 alkenyl or alkadienyl group, a C4-12 alkoxyalkyl or alkoxyalkenyl group having one or more C1-3 a... | 09/04/1984 |
| 4465853 | Method for isomerizing diacetoxybutenes 3,4-Diacetoxybutene-1 can be easily isomerized into 1,4-diacetoxybutene-2 by contacting it with a cation exchange resin. This method is capable of providing an excellent reaction result and is free of the problem of corrosion of apparatus as well as the p... | 08/14/1984 |
| 4415701 | Water soluble thickeners Disclosed in this invention are copolymers containing about 0.5% to about 20%, by weight, of a C10 -C36 monoepoxide and about 99.5% to about 80%, by weight, of a 1,3 dioxolane. These copolymers are useful in increasing the viscosity ... | 11/15/1983 |
| 4407825 | Novel bis- and poly-disulfides having immunostimulant activity Compounds of formula wherein R1 and R2 are, independently, hydrogen, C1-5 alkyl or a physiologically-hydrolyzable and -acceptable acid residue; m and n are, independently, 2 or 3; p is an integer of fron 2 to 6; and x is 1, 2 ... | 10/04/1983 |
| 4395430 | Diketone generators A novel class of alpha-keto geminal diacyloxy compounds is disclosed. These compounds are useful as vicinal diketone generators in foodstuffs. Use for this purpose is also disclosed.... | 07/26/1983 |
| 4360694 | Process for preparing 1,2-diacyl-sn-glycerols The object of the present invention is a novel and simple process for the production of 1,2-diacyl-sn-glycerols, wherein the acyl groups may be the same or different. According to the invention D-mannitol is reacted with benzene boronic acid or a derivati... | 11/23/1982 |
