| Patent Number |
Title Of Patent |
Date Issued |
| 7375247 |
Method for producing deuterated methyl methacrylate |
May 20, 2008 |
| A method for producing MMA-d.sub.8 which includes a step of exchanging D in hydroxyl group of methanol-d.sub.4 represented by the formula: CD.sub.3OD with H to prepare the methanol-d.sub.3 represented by the formula CD.sub.3OH and simultaneously recovering a deuterium-containing comp |
| 6532124 |
Information recording apparatus and method thereof |
March 11, 2003 |
| The present invention relates to an information recording apparatus and a method thereof that allow all data on a magnetic tape to be easily obtained and instrumental data and header information supplied from respective systems to be combined when instrumental data is recorded. Accor |
| 6229661 |
Digital data recording and reproducing apparatus and digital data reproducing apparatus |
May 8, 2001 |
| This invention provides a digital data recording and reproducing apparatus and a digital data reproducing apparatus for recording data to a recording medium which can handle instrumental data as the data. In the digital data recording and reproducing apparatus according to the invention, |
| 6162946 |
Processing for producing allyl 2-hydroxyisobutyrate |
December 19, 2000 |
| There is disclosed a process for producing allyl 2-hydroxyisobutyrate useful as a raw material for agrochemicals and pharmaceuticals, which comprises reacting methyl 2-hydroxyisobutyrate with allyl alcohol preferably by means of reactional distillation in the presence of a transester |
| 6124501 |
Process for preparing lactamide |
September 26, 2000 |
| A process for preparing lactamide with a high conversion and a high selectivity without the deterioration of a catalytic activity in a short time, which comprises subjecting lactonitrile to a hydrating reaction in the presence of (A) a catalyst including an oxide of manganese as a main |
| 5990324 |
Process for producing 3-methyltetrahydrofuran |
November 23, 1999 |
| There is disclosed a process for producing 3-methyl-tetrahydrofuran which comprises the step 1 of subjecting the compound represented by the general formula [I]wherein R is an alkyl group having 1 to 3 carbon atoms and the formyl group may be present as an acetal having an alkanol with 1 |
| 5872266 |
Process for producing 3-methyltetrahydrofuran |
February 16, 1999 |
| There is disclosed a process for producing 3-methyltetrahydrofuran substantially free from any of an alcohol and water which comprises adding an organic solvent capable of forming an azeotropic mixture with an alcohol with an alkyl group having 1 to 3 carbon atoms to a mixed liquid c |
| 5824818 |
Process for preparing lactate |
October 20, 1998 |
| A process for preparing a lactate which includes: (a) preparing lactonitrile from prussic acid and acetaldehyde, (b) hydrating the lactonitrile to form lactamide, (c) forming the desired lactate and formamide from lactamide and formate (or methanol and carbon monoxide), (d) separatin |
| 5756842 |
Process for preparing lactamide |
May 26, 1998 |
| There is herein disclosed a process for preparing a lactamide by hydrating lactonitrile in the presence of a catalyst mainly comprising a manganese oxide, and a nitrogen-containing compound such as ammonia or diethylamine. According to this process, the lactamide can be obtained from lac |
| 5703272 |
Process for preparing a carboxylic acid ester |
December 30, 1997 |
| A process for preparing a carboxylic acid ester which includes subjecting a carboxylic acid and an alcohol or a phenol to an esterification reaction in the presence of a silica-titania catalyst. The silica-titania catalyst is prepared by adding an acidic solution containing a silicon com |
| 5663382 |
Process for preparing 3-methyltetrahydrofuran |
September 2, 1997 |
| A process for preparing 3-methyltetrahydrofuran is herein disclosed which comprises reacting a methacrylic acid ester with carbon monoxide and a lower aliphatic alcohol to obtain a methylsuccinic acid diester, and hydrogenating and dehydrating/cyclizing this methylsuccinic acid diester. |
| 5646603 |
Remote control apparatus for recording/playback equipment |
July 8, 1997 |
| A remote control apparatus for recording/playback equipment capable of remotely controlling complicated recording playback equipment while placing little burden on the control side. Schedule data is transmitted from an uplink system 100 to a downlink system 200 via a communications s |
| 5618953 |
Process for producing 3-methyltetrahydrofuran |
April 8, 1997 |
| A process for producing 3-methyltetrahydrofuran, wherein in a first step, prussic acid is reacted with methyl methacrylate to produce methyl 3-cyanoisobutyrate. The methyl 3-cyanoisobutyrate is then reacted with water and sulfuric acid to produce a resultant product which is reacted |
| 5587453 |
Process for purifying methacrylate |
December 24, 1996 |
| A process for purifying a methacrylate which comprises contacting the methacrylate with an oximating agent, such as hydroxylamine hydrochloride or an aqueous alkali solution, such as an aqueous sodium hydroxide solution, or both, and then separating and collecting the resultant purif |
| 5587349 |
Process for preparing silica-titania catalyst |
December 24, 1996 |
| A process for preparing a silica-titania catalyst by adding an acidic solution containing a silicon compound such as sodium silicate and a titanium compound such as titanium sulfate dissolved therein to a solution of a compound such as ammonium bicarbonate to bring about co-precipita |
| 5439661 |
Process for producing hydrogen cyanide |
August 8, 1995 |
| There is disclosed a process for efficiently producing hydrogen cyanide at a reaction temperature of preferably 250.degree. to 550.degree. C. by a catalytic dehydrative reaction of formamide which comprises employing as a catalyst, a manganese oxide (MnO) and/or a magnesium oxide (MgO) e |
| 5391813 |
Process for producing methyl .alpha.-hydroxyisobutyrate |
February 21, 1995 |
| There is disclosed a process for efficiently producing methyl .alpha.-hydroxyisobutyrate from .alpha.-hydroxyisobutyramide and methyl formate by means of reaction distillation which comprises feeding .alpha.-hydroxyisobutyramide and an alkali metal hydroxide in a continuous distillat |
| 5371273 |
Process for producing methyl methacrylate |
December 6, 1994 |
| There is disclosed a process for producing methyl methacrylate through gas-phase catalytic reaction of methyl .alpha.-hydroxyisobutyrate which comprises feeding methanol in an amount by weight of 0.1 to 3.0 times the methyl .alpha.-hydroxyisobutyrate in a reactor along therewith and |
| 5312966 |
Process for production of carboxylic acid ester and formamide |
May 17, 1994 |
| There is disclosed a process for efficiently producing a carboxylic acid ester and formamide by reacting a carboxylic acid amide with a formic acid ester or with an alcohol and carbon monoxide in the presence of a strongly basic anion-exchange resin. By the use of the strongly basic |
| 5250729 |
Process for preparing unsaturated carboxylic acid or ester thereof |
October 5, 1993 |
| A process for preparing an .alpha., .beta.-unsaturated carboxylic acid and/or an .alpha., .beta.-unsaturated carboxylic acid ester from at least one ester selected from .alpha.-hydroxycarboxylic acid ester, .alpha.-alkoxycarboxylic acid ester and .beta.-alkoxycarboxylic acid ester as |
| 5225594 |
Process for producing methacrylic acid |
July 6, 1993 |
| A process for producing methacrylic acid which comprises: (I) producing acetonecyanohydrin from prussic acid and acetone; (II) hydrating the acetonecyanohydrin obtained in step (I) to form .alpha.-hydroxyisobutyric acid amide; (III) reacting the .alpha.-hydroxyisobutyric acid amide o |
| 5075493 |
Process for preparing .alpha., .beta.-unsaturated carboxylic acid ester |
December 24, 1991 |
| A process for producing .alpha., .beta.-unsaturated carboxylic acid ester which comprises catalytically reacting .alpha.-hydroxycarboxylic acid ester with crystalline aluminosilicate catalyst, and then catalytic reacting the resulting reaction product with solid acid catalyst.According t |
| 5053535 |
Process for producing .alpha.-hydroxyisobutyric acid |
October 1, 1991 |
| A process for producing an .alpha.-hydroxyisobutyric acid which comprises hydrolyzing .alpha.-hydroxyisobutyric acid ester in the presence of an organic sulfonic acid catalyst, using an .alpha.-hydroxyisobutyric acid ester as the starting material.According to said process, .alpha.-hydro |
| 5023390 |
Process for production of 2,6-dimethylnaphthalene |
June 11, 1991 |
| A process for production of 2,6-dimethylnaphthalene is disclosed; comprising the steps: (1) an acylation step where 2,4-dimethylisobutyrophenone is produced from m-xylene, propylene and carbon monoxide: (2) a hydrogenation step where the carbonyl group of the above 2,4-dimethylisobut |
| 5008479 |
Process for production of 2,6-dimethylnaphthalene |
April 16, 1991 |
| A process for production of 2,6-dimethylnaphthalene is disclosed, comprising the steps: (1) an acylation step where p-tolyl sec-butyl ketone is produced from toluene, n-butene and carbon monoxide: (2) a hydrogenation step where the carbonyl group of the p-tolyl sec-butyl ketone is hy |
