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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 8143440 | Method for separation of olefin-alcohol azeotropic mixture There is provided a method for separating and collecting at least alcohol with a high purity from an azeotropic mixture of olefin and alcohol. The method conducts the following steps: an azeotropic mixture crystallization step of subjecting an azeotropic mixt... | 03/27/2012 |
| 8124805 | Allyl acetate hydroformylation process A process for the production of 4-acetoxybutyraldehyde is described. The process comprises reacting allyl acetate with a mixture of carbon monoxide and hydrogen in the presence of a solvent and a catalyst comprising a rhodium complex and a diphosphine. The diphoshin... | 02/28/2012 |
| 7544831 | Green catalytic process for the synthesis of acetyl salicylic acid The present invention provides a green catalytic process for the synthesis of acetyl salicylic acid using solid acid catalysts at atmospheric pressure. The invention involve the solid acid catalyst such as sulfated transition metal oxides namely nano-crystalline sul... | 06/09/2009 |
| 6919392 | Stabilization of vinyl halide polymers The heat and light stability imparted to vinyl halide polymers by metal compounds conventionally employed for this purpose is considerably improved by the presence of a mercapto ester such as 2-mercaptoethyl stearate. The esters can replace a substantial portion of ... | 07/19/2005 |
| 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 |
| 6348622 | Vitamin a related compounds and process for producing the same There is provided a compound of the formula[I]: ##STR1## wherein R represents a hydrogen atom or a protective group for a hydroxyl group; and A represents a hydrogen atom, a halogen atom or a group of the formula A1: ##STR2## Q represents Q3: ##STR3#... | 02/19/2002 |
| 6323174 | Diene compound and process for producing the same The invention provides a chain diene compound with desirable regioselectivity, in the presence of a specific ruthenium compound. This chain diene compound is a promising raw material for terpene. It has a structure represented by the general formula (I): ... | 11/27/2001 |
| 6288285 | Process for producing dichloroacetoxypropane and derivatives thereof A process for producing dichloroacetoxypropane comprising reacting allyl acetate with chlorine in a gaseous phase in the presence of a catalyst comprising an element of Group 16 of the long-form Periodic Table or in the absence of a catalyst. The dichloro... | 09/11/2001 |
| 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 |
| 6118030 | Process for producing dichloroacetoxypropane and derivatives thereof A process for producing dichloroacetoxypropane comprising reacting allyl acetate with chlorine in a gaseous phase in the presence of a catalyst. The dichloroacetoxypropane obtained may be converted to dichloropropanol and epichlorohydrin.... | 09/12/2000 |
| 5777140 | Process for the preparation of acyloxyalkanesulfonates having improved properties Process for the preparation of acyloxyalkanesulfonates having improved properties The acyloxyalkanesulfonates are obtained in accordance with the invention by direct esterification in which at least one fatty acid is esterified with at least one ammonium ... | 07/07/1998 |
| 5665877 | Synthesis of bisindolylmaleimides The present invention provides a novel synthesis of the compounds of Formula (I): ##STR1## The compounds are produced in high yield and without utilizing expensive chromatographic separations. The synthesis is particularly advantageous because i... | 09/09/1997 |
| 5648513 | O-acyl serines The invention relates to a method of suppressing human body malodor by utilizing a deodorant composition containing a competitive substrate for the enzymatic creation of axillary body malodor. The compound is present in a dermatologically acceptable vehic... | 07/15/1997 |
| 5635571 | Polymerizable macromonomers and polymers prepared therefrom Polyoxazolines having the structural formula: ##STR1## wherein R is phenylene or alkylene containing 2 to 18 carbon atoms, R2 is C1-4 alkyl and R1 is selected from the group consisting of C1-12 alkyl, vinyl... | 06/03/1997 |
| 5629423 | Asymmetric synthesis of chiral secondary alcohols A process for synthesizing enantiomerically pure chiral secondary alcohol compounds linked to a heterocyclic core moiety, using a natural chiral molecule starting material. The inventive process is particularly useful for bulk manufacturing of chiral seco... | 05/13/1997 |
| 5614647 | Intermediates for the synthesis of bisindolylmaleimides The present invention provides a novel synthesis of the compounds of Formula (I): ##STR1## The compounds are produced in high yield and without utilizing expensive chromatographic separations. The synthesis is particularly advantageous because i... | 03/25/1997 |
| 5541347 | Synthesis of bisindolylmaleimides The present invention provides a novel synthesis of the compounds of Formula (I): ##STR1## The compounds are produced in high yield and without utilizing expensive chromatographic separations. The synthesis is particularly advantageous because i... | 07/30/1996 |
| 5491145 | Imidazopyridazines, their production and use Novel compound of the general formula: ##STR1## wherein R1 stands for a hydrogen atom, an optionally substituted lower alkyl group or a halogen atom; R2 and R3 respectively stand for a hydrogen atom or an optionally s... | 02/13/1996 |
| 5455371 | Method of producing difluoromethyl ethers and esters and ethers and esters produced thereby A process for producing difluoromethyl ethers and esters by reacting an ether or an acid with a cadmium, zinc or bismuth compound containing the CF3 group and selected from the group consisting of Cd(CF3)2, Zn(CF3 | 10/03/1995 |
| 5360938 | Asymmetric syntheses This invention relates to asymmetric syntheses in which a prochiral or chiral compound is contacted in the presence of an optically active metal-ligand complex catalyst to produce an optically active product.... | 11/01/1994 |
| 5359128 | Malic acid derivatives and compositions for the treatment of psoriasis The invention comprises compositions and methods for the treatment of psoriasis. The compositions comprise compounds of the formula: ##STR1##... | 10/25/1994 |
| 5344952 | Fluoroketone enzyme inhibitors A method for enzyme immunoassay for a ligand suspected to be present in a liquid sample includes signal amplification by use of at least two enzymes and a blocked modulator for one of the enzymes. Ligand present in the liquid binds to an antiligand and an... | 09/06/1994 |
| 5231221 | Process for the preparation of acylals Compounds of the formula ##STR1## can advantageously be prepared by reacting compounds the formula II ##STR2## in which the substituents R1 -R4 have the meanings given, with the anhydride of the formula III ##STR3## ... | 07/27/1993 |
| 5210315 | Process for producing -hydroxyketones A process for producing an -hydroxyketone represented by formula (I): ##STR1## wherein R1 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aralkyl group, or an alkoxycarbonyl group; and R | 05/11/1993 |
| 5175348 | Process for the preparation of halogenated carboxylic acid esters The invention relates to a novel process for the preparation of halogenated carboxylic acid esters of formula I ##STR1## wherein R1 is alkyl, alkenyl, alkynyl, cycloalkyl, aralkyl or aryl, R2 hydrogen is alkyl or cycloalkyl, and... | 12/29/1992 |
| 5171879 | Process for the preparation of chlorinated carboxylic acid esters The invention relates to a novel process for the preparation of chlorinated carboxylic acid esters of formula I ##STR1## wherein R1 is alkyl, alkenyl, alkynyl, cycloalkyl, aralkyl or aryl and R2 hydrogen is alkyl or cycloalkyl, ... | 12/15/1992 |
| 5155256 | Process for preparing 2-bromoethyl acetate An improved process for preparing 2-bromoethyl acetate involves reacting ethylene glycol with an aqueous solution of hydrogen bromide and acetic acid in the presence of a solvent such as toluene which forms an azeotrope with water but not with 2-bromoethy... | 10/13/1992 |
| 5130462 | Cyclobutane derivatives Cyclobutane derivatives of the formulas ##STR1## wherein P is a hydroxy protecting group and X is a leaving group are useful intermediates in the preparation of antiviral compounds.... | 07/14/1992 |
| 5091598 | Manufacture of tertiary and secondary alcohols by the action of an organic halogen compound and manganese on a compound carrying a carbonyl group Process of preparation of alcohols by the reaction of an organic halide with a carbonyl compound in an organic solvent, in the presence of metallic manganese, followed by hydrolysis of the reaction product; the reaction is initiated and activated by an es... | 02/25/1992 |
| 5091560 | Method for synthesizing acyloxycarboxylic acids A method for synthesizing an acyloxycarboxylic acid by providing a reaction chamber, establishing sources of an -hydroxycarboxylic acid and an acid chloride, and repeatedly contacting substantially equal molar amounts of the -hydroxycarboxyl... | 02/25/1992 |
| 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 |
| 4959187 | Glycolate ester peracid precursors The invention provides novel bleaching compositions comprising peracid precursors with the general structure ##STR1## with R, R', R" and L as defined in the specification. Novel peracids and precursors are also herein disclosed. These peracid precurs... | 09/25/1990 |
| 4933510 | Propanol derivatives Propanol derivatives of formula (I) wherein X is a leaving group; R1 is H or a protecting group; and R2 is H, and R3 is a group--CH2 Y wherein Y is a leaving group; or R2 and R3 together fo... | 06/12/1990 |
| 4931590 | Preparation of adipic acid Adipic acid is prepared by a process which comprises the following steps: (a) Hydroformylation of a pentenoic ester by reaction with carbon monoxide and hydrogen at elevated temperatures and under superatmospheric pressure in the presence of a cobalt carbonyl ... | 06/05/1990 |
| 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 |
| 4925985 | Novel process for the production of 4,6-dimethyl-7-hydroxynonan-3-one A process for the production of 4,6-dimethyl-7-hydroxynonan-3-one of specific stereochemistry is disclosed. The process results in an active (+)-serricornin.... | 05/15/1990 |
| 4910321 | Living catalysts, complexes and polymers therefrom This invention provides a novel catalyst composed of a complex of an organic acid or its ester and a Lewis acid, preferably boron trichloride that can add olefin monomers to increase the molecular weight of the complex from as low as 200 to in excess of a... | 03/20/1990 |
| 4910330 | Synthesis of sulfonic acids and carboxylic acid ester derivatives thereof Hydroxy sulfonic acids in general and isethionic acid (2-hydroxy ethyl sulfonic acid) in particular can be prepared at 99+% purity and good yields by the selective oxidation of a precursor hydroxy mercaptan with hydrogen peroxide. The resulting product is... | 03/20/1990 |
| 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 |
| 4841081 | Method of optically resolving a racemate or a diastereomeric mixture of glycidyl compound A method of optically resolving a racemate, or a diastereomeric mixture, of a substituted or unsubstituted glycidyl ester or ether compound having at least one glycidylic structure represented by the formula ##STR1## wherein R1, R2 | 06/20/1989 |
