Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7459587 | Process for purifying menthol Crude menthol is dissolved in nitrile series solvent and then menthol is precipitated by cooling the solution to thereby obtain optically and chemically substantially pure menthol, the enantiomeric excess thereof being more than about 99% e.e. and the chemical purit... | 12/02/2008 |
| 7301057 | Process for preparing TCD-alcohol DM The present invention relates to a process for preparing 3(4),8(9)-dihydroxymethyltricyclo[5.2.102.6]decane by hydrogenating the hyd roformylation products of d icyclopentad lene. The process comprises carrying out the hydrogenation in the presence of wat... | 11/27/2007 |
| 6956139 | (1R, 2S, 5R)-3-1-menthoxyalkan-1-OL cooling sensate A cooling sensate compound having the general formula (I): where n is an integer from 2 to 6. The compound is effective in imparting a refreshing and cooling sensation of long duration. A cooling sensate composition ha... | 10/18/2005 |
| 6906000 | Stable carbonous catalyst particles and method for making and utilizing same Stable carbonous catalyst particles composed of an inorganic catalytic metal/metal oxide powder and a carbonaceous binder material are formed having a basic inner substantially uniform-porous carbon coating of the catalytic powder, and may include an outer porous ca... | 06/14/2005 |
| 6407293 | Process for producing 3-1-menthoxypropane-1,2-diol A process for producing highly pure 3-1-menthoxypropane-1,2-diol safely and efficiently, and an intermediate to be used in the process. 3-1-menthoxypropane-1,2-diol represented by the chemical formula (IV) is produced by adding 1-menthol to a 1,2-epoxy-3-... | 06/18/2002 |
| 6177596 | Highly acidic microporous synergistic solid catalyst and its applications An active highly acidic microporous solid catalyst comprising sulphated metal oxide and at least one of carbon molecular sieve and/or heteropoly acid and having pore volume in the range of 0.1-0.2 m3 /g and pore size distribution in the range o... | 01/23/2001 |
| 5756864 | Process for preparing D,L-menthol from D-menthol A process is described for preparing D,L-menthol by catalytic rearrangement of optically active D-menthol in the presence of hydrogen at temperatures of from 200 to 350° C. and under pressures of from 50 to 350 bar over fixed-bed catalysts comprising sup... | 05/26/1998 |
| 5750803 | Process for the preparation of D,L-menthol A continuous process is described for the preparation of D,L-menthol by catalytic hydrogenation of compounds which have the carbon skeleton of p-menthane containing at least one double bond and are 3-substituted by oxygen using hydrogen and/or by rearrang... | 05/12/1998 |
| 5714642 | Resolution of immixtures of stereoisomeric alcohols Immixture of stereoisomeric alcohols is resolved by selectively enzymatically acylating one of the stereoisomers thereof, in the presence of a catalytically effective amount of a hydrolase, for example a lipase, esterase or acylase, in a biphasic hydroorg... | 02/03/1998 |
| 5663460 | Liquid l-n-menthol composition and process for preparing the same A liquid l-n-menthol composition containing 30 to 80% by weight of (-)-n-isopulegol and a process for preparing a liquid l-n-menthol composition comprising mixing 20 to 70 parts by weight of liquid menthol at a temperature of not lower than 42° C. as obt... | 09/02/1997 |
| 5300706 | Process for the preparation of d,1-menthol A process for the preparation of d,l-menthol by catalytic hydrogenation of aromatic or partly hydrogenated cyclic compounds which have the carbon skeleton of menthol having at least one double bond and are substituted by oxygen in the 3-position relative ... | 04/05/1994 |
| 5019658 | Separation of pure optical stereoisomers by pressure crystallization The instant invention is an improvement in the method of producing optically pure sterioisomers from a racemic mixture. The method is based on the well-known fact that a supersaturated solution or melt of the racemic mixture can be seeded with just the cr... | 05/28/1991 |
| 4874473 | Separation of diastereomers by extractive distillation Diastereomers can be separated with good industrial success with the aid of extractive distillation. The separation process is characterized in that an auxiliary which changes the partial pressure of the various diastereomers to be separated to a differen... | 10/17/1989 |
| 4701542 | Resolution of hemiacetals and alcohols A process for the resolution of hemiacetal compounds of the formula ##STR1## wherein A is a hydrocarbon chain containing 1 to 16 groups, the said chain optionally containing at least one heteroatom, at least one unsaturation, the assembly of the grou... | 10/20/1987 |
| 4433183 | Process for the preparation of (+)-p-mentha-2,8-dien-1-ol Multistep process for preparing (+)-p-mentha-2,8-dien-1-ol from (+)-(R)-limonene. New compounds useful as intermediates in said process.... | 02/21/1984 |
| 4418225 | Resolution of d,1-menthol 1-Menthol can be readily obtained from racemic menthol by conversion of the latter to the diastereomeric esters of an optically active amino acid and chromatographing the diastereomers. The separation of the diastereomeric esters is relatively insensitive... | 11/29/1983 |
| 4348543 | Cycloaliphatic alcohols The present invention describes cycloaliphatic alcohols prepared via a Diels-Alder reaction.... | 09/07/1982 |
| 4134919 | Process for producing menthone A process for producing menthone comprising dehydrogenating citronellol in the presence of a dehydrogenation catalyst at about 150 to about 260° C in an atmosphere of hydrogen under a pressure of 0 to about 5 kg/cm2. G and a process for produc... | 01/16/1979 |
| 4122291 | Method for the production of alken-2-ol-1 or of alken-2-ol-1 and alkanol-1 Production of an alken-2-ol-1, or of an alken-2-ol-1 and an alkanol-1 from the corresponding alken-3-ol-1 is described. The above compound or compounds can be produced with good selectivity by converting an alken-3-ol-1 to the boric acid ester, and, then,... | 10/24/1978 |
| 4011270 | Recrystallized menthol product and method of making A recrystallized menthol product derived from crude natural menthol is described for incorporation into foods, beverages and tobacco in amounts sufficient to create a lingering cool sensation in the mouth of the user of the food, beverage or tobacco with ... | 03/08/1977 |
| 3943181 | Separating optically pure d-l-isomers of menthol, neomenthol and isomenthol A process for the separation of optically active d- and l-isomers of a compound selected from the group consisting of menthol, neomenthol and isomenthol, which comprises esterifying a d,l-isomeric mixture of the compound with an acid selected from the gro... | 03/09/1976 |
