公开(公告)号：US5618953A

公开(公告)日：1997-04-08

申请号：US595271

申请日：1996-02-01

申请人： Takafumi Abe ,  Fumio Tanaka ,  Hiroyuki Nitobe ,  Masaki Takemoto

发明人： Takafumi Abe ,  Fumio Tanaka ,  Hiroyuki Nitobe ,  Masaki Takemoto

IPC分类号： C07D307/06 ,  C07D307/02

CPC分类号： C07D307/06

摘要： 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 with a C.sub.1 -C.sub.8 aliphatic alcohol to produce a methylsuccinic acid ester. The methylsuccinic acid ester is catalytically hydrogenated to prepare the 3-methyltetrahydrofuran. Alternatively, the methyl 3-cyanoisobutyrate is hydrated to produce methyl 3-carbamoylisobutyrate, which is then reacted with a formic acid ester to form a methylsuccinic acid ester and formamide and the resultant methylsuccinic acid ester is catalytically hydrogenated. The 3-methyltetrahydrofuran is produced in high selectivity and in a commercially advantageous manner from inexpensive reactants. The 3-methyltetrahydrofuran is useful as a commoner for producing polyether glycol, which is utilized as starting raw material for preparing spandex fiber.

摘要翻译： 一种生产3-甲基四氢呋喃的方法，其中在第一步中，使二异丁酸与甲基丙烯酸甲酯反应产生3-氰基异丁酸甲酯。 然后使3-氰基异丁酸甲酯与水和硫酸反应，生成与C1-C8脂族醇反应生成甲基琥珀酸酯的产物。 将甲基琥珀酸酯催化氢化以制备3-甲基四氢呋喃。 或者，将3-氰基异丁酸甲酯水合，得到3-氨基甲酰基异丁酸甲酯，然后与甲酸酯反应形成甲基琥珀酸酯和甲酰胺，得到的甲基琥珀酸酯被催化氢化。 3-甲基四氢呋喃以廉价的反应物以高选择性和商业上有利的方式生产。 3-甲基四氢呋喃可用作制备聚醚二醇的通用剂，其用作制备氨纶纤维的起始原料。

公开(公告)号：US5872266A

公开(公告)日：1999-02-16

申请号：US925027

申请日：1997-09-08

申请人： Hiroyuki Nitobe ,  Masaki Takemoto ,  Takafumi Abe

发明人： Hiroyuki Nitobe ,  Masaki Takemoto ,  Takafumi Abe

IPC分类号： C07D307/06 ,  C07D307/00 ,  C07D307/02

CPC分类号： C07D307/06

摘要： 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 containing 3-methyltetrahydrofuran, the alcohol and/or water as the principal components and, as the case may be, another substance, and distilling the resultant mixture of the mixed liquid and said organic solvent. According to the above process, it is made possible to efficiently separate a mixture of 3-methyltetrahydrofuran and an alcohol and/or water which mixture is difficult to separate with conventional distillation process alone, thereby efficiently producing the objective 3-methyltetrahydrofuran substantially free from any of an alcohol and water.

摘要翻译： 公开了一种基本上不含任何醇和水的3-甲基四氢呋喃的制备方法，该方法包括将能够与具有1至3个碳原子的烷基的醇形成共沸混合物的有机溶剂加入到含有3 甲基四氢呋喃，醇和/或水作为主要成分，视情况而定，另一种物质，并蒸馏混合液和有机溶剂的混合物。 根据上述方法，可以有效地分离3-甲基四氢呋喃与醇和/或水的混合物，该混合物难以与常规的蒸馏方法分离，从而有效地制备基本上不含任何物质的目标3-甲基四氢呋喃 的酒精和水。

公开(公告)号：US5663382A

公开(公告)日：1997-09-02

申请号：US729384

申请日：1996-10-11

申请人： Masaki Takemoto ,  Yoshikazu Shima ,  Takafumi Abe

发明人： Masaki Takemoto ,  Yoshikazu Shima ,  Takafumi Abe

IPC分类号： B01J23/86 ,  B01J31/02 ,  C07B61/00 ,  C07D307/06 ,  C07D307/08

CPC分类号： C07D307/06

摘要： 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. According to this process, 3-methyltetrahydrofuran can efficiently be obtained from inexpensive starting materials.

摘要翻译： 本文公开了制备3-甲基四氢呋喃的方法，其包括使甲基丙烯酸酯与一氧化碳和低级脂族醇反应，得到甲基琥珀酸二酯，并使该甲基琥珀酸二酯氢化和脱水/环化。 根据该方法，可以从廉价的原料得到3-甲基四氢呋喃。

公开(公告)号：US5990324A

公开(公告)日：1999-11-23

申请号：US039954

申请日：1998-03-16

申请人： Masaki Takemoto ,  Takafumi Abe

发明人： Masaki Takemoto ,  Takafumi Abe

IPC分类号： B01J23/72 ,  C07B61/00 ,  C07D307/06

CPC分类号： C07D307/06

摘要： 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]ROOC--CH(CH.sub.3)--CH.sub.2 --CHO [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 to 8 carbon atoms, to hydrogenation and alcohol-eliminating cyclization to synthesize 2-methyl-.gamma.-butyrolactone; the step 2 of separating the 2-methyl-.gamma.-butyrolactone formed in the step 1 from alcohols by means of distillation, etc.; and the step 3 of hydrogenating the 2-methyl-.gamma.-butyrolactone which is formed in the step 2. The above process enables the production of the objective highly-pure 3-methyltetrahydrofuran substantially free from an alcohol in high efficiency and high conversion through simplified production steps.

摘要翻译： 公开了一种制备3-甲基 - 四氢呋喃的方法，其包括步骤1：使通式[I]表示的化合物ROOC-CH（CH 3）-CH 2 CHO [I]其中R是具有1个 至3个碳原子，甲酰基可以作为具有1至8个碳原子的链烷醇的缩醛存在，进行氢化和醇消除环化以合成2-甲基-γ-丁内酯; 通过蒸馏等将步骤1中形成的2-甲基γ-丁内酯与醇分离的步骤2; 以及氢化步骤2中形成的2-甲基-γ-丁内酯的步骤3.上述方法使得通过简化的方法能够以高效率和高转化率生产基本上不含醇的目标高纯度3-甲基四氢呋喃 生产步骤。

公开(公告)号：US20070043242A1

公开(公告)日：2007-02-22

申请号：US10569643

申请日：2004-09-01

申请人： Yuichi Sugano ,  Takafumi Abe ,  Toshifumi Abe

发明人： Yuichi Sugano ,  Takafumi Abe ,  Toshifumi Abe

IPC分类号： C07C233/02

CPC分类号： C07B59/001 ,  C07B2200/05 ,  C07C67/20 ,  C07C69/54

摘要： A method for producing MMA-d8 which includes a step of exchanging D in hydroxyl group of methanol-d4 represented by the formula: CD3OD with H to prepare the methanol-d3 represented by the formula CD3OH and simultaneously recovering a deuterium-containing compound, and a step of reacting methanol-d3 with sulfuric acid salt of methacrylic acid amide represented by the formula CD2═(CD3)CO(NH2·H2SO4) to prepare MMA-d8 represented by the formula: CD2═(CD3)COOCD3.

摘要翻译： 一种制备MMA-d 8 N的方法，该方法包括在由下式表示的甲醇-d 4的羟基中交换D的步骤：＆lt; 3＆lt; 3＆gt; > OD以制备由式CD 3 OH表示的甲醇-d 3并同时回收含氘化合物，并且使甲醇-d 3反应， 由式CD 2 - （CD 3 N）CO（NH 2）2表示的甲基丙烯酸酰胺的硫酸盐与（3-N） > H 2 SO 4），以制备由下式表示的MMA-d 8：（Ⅳ）（（（（（（（：：：：：：：：：：：：：：：：：：：：：：：：：：：：：：： CD 3）COOCD 3 3。

公开(公告)号：US5587349A

公开(公告)日：1996-12-24

申请号：US366812

申请日：1994-12-30

申请人： Mariko Abe ,  Shuji Ebata ,  Takafumi Abe ,  Hirofumi Higuchi

发明人： Mariko Abe ,  Shuji Ebata ,  Takafumi Abe ,  Hirofumi Higuchi

IPC分类号： B01J21/06 ,  B01J21/08 ,  B01J37/03 ,  C07C67/08

CPC分类号： B01J21/063 ,  B01J21/08 ,  B01J37/03 ,  C07C67/08

摘要： 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-precipitation, in which the acidic solution is a highly concentrated nitric acid-acidic or sulfuric acid-acidic solution, and a ratio of the dissolved titanium compound in the acidic solution is regulated in a certain range.According to this process, a catalyst capable of exerting a high performance in an esterification reaction and the like can be efficiently obtained.

摘要翻译： 一种二氧化硅 - 二氧化钛催化剂的制备方法，该方法是将含有硅化钠等硅化合物的酸性溶液和溶解在其中的硫酸钛等钛化合物的酸性溶液加入到碳酸氢铵等化合物的溶液中，进行共沉淀， 酸性溶液是高浓度硝酸 - 酸性或硫酸 - 酸性溶液，并且将溶解的钛化合物在酸性溶液中的比例调节在一定范围内。 根据该方法，可以有效地获得能够在酯化反应等中发挥高性能的催化剂。

公开(公告)号：US5646603A

公开(公告)日：1997-07-08

申请号：US565274

申请日：1995-11-30

申请人： Atsushi Nagata ,  Haruo Iwasaki ,  Kazuhiko Shimizu ,  Yoshinori Tanba ,  Takafumi Abe ,  Tatsuo Imai ,  Akihiro Kikuchi ,  Teruyuki Miyakawa

发明人： Atsushi Nagata ,  Haruo Iwasaki ,  Kazuhiko Shimizu ,  Yoshinori Tanba ,  Takafumi Abe ,  Tatsuo Imai ,  Akihiro Kikuchi ,  Teruyuki Miyakawa

IPC分类号： G11B15/02 ,  H04N5/44 ,  H04N5/765 ,  H04N5/782 ,  H04N5/7826 ,  H04N5/92 ,  H04N7/20 ,  H04Q1/00

CPC分类号： G11B15/023 ,  H04N5/44 ,  H04N5/765 ,  H04N5/9206

摘要： 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 satellite. The schedule data includes operation data for recording and playback operations and their related operations, start data which displays at least the operation start time, and position data which indicates the recording/playback position on the recording medium. The received schedule data is stored in a non-volatile RAM in the control area of the VCR 203. The VCR then uses this schedule data as a basis for automatically carrying out recording or playback operations and their related operations. As is no longer necessary to control the operation by providing appropriate commands to the VCR 203 in real time, the burden on the control side is greatly eased with regards to the control of complicated operations in addition to recording and playback, such as rewind and pre-roll operation modes.

摘要翻译： 一种用于记录/重放设备的远程控制装置，其能够远程控制复杂的记录重放设备，同时在控制侧施加很小的负担。 调度数据经由通信卫星从上行链路系统100发送到下行链路系统200。 调度数据包括用于记录和重放操作及其相关操作的操作数据，至少显示操作开始时间的起始数据和指示记录介质上的记录/重放位置的位置数据。 所接收的时间表数据被存储在VCR203的控制区域中的非易失性RAM中。然后，VCR将该调度数据用作自动执行记录或重放操作及其相关操作的基础。 由于不再需要通过向VCR 203实时提供适当的命令来控制操作，所以除了记录和回放之外的复杂操作的控制（例如倒带和预取），控制侧的负担被大大减轻 滚动操作模式。

公开(公告)号：US5371273A

公开(公告)日：1994-12-06

申请号：US135066

申请日：1993-10-12

申请人： Yoshikazu Shima ,  Takafumi Abe ,  Hirofumi Higuchi

发明人： Yoshikazu Shima ,  Takafumi Abe ,  Hirofumi Higuchi

IPC分类号： B01J29/08 ,  C07B61/00 ,  C07C67/327 ,  C07C69/54 ,  C07C67/00

CPC分类号： C07C67/327

摘要： 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 proceeding with the reaction at a reaction temperature in the range of 230.degree. to 300.degree. C. by the use of a transition-type synthetic faujasite zeolite having a specific lattice constant and a specific Na content (Na/Al) as the catalyst. The process is capable of stably producing the objective product having excellent quality in high yield for a long period of time while preventing the problems of early deterioration of the catalyst and coloring of reaction product.

摘要翻译： 公开了一种通过甲基α-羟基异丁酸甲酯的气相催化反应生产甲基丙烯酸甲酯的方法，该方法包括在反应器中沿着反应器进料甲醇的量为0.1-3.0倍的甲基α-羟基异丁酸甲酯，并进行反应 通过使用具有特定晶格常数和特定Na含量（Na / Al）作为催化剂的过渡型合成八面沸石，反应温度在230℃至300℃的范围内。 该方法能够长期稳定地生产高质量的高品质的目标产物，同时防止催化剂的早期劣化和反应产物的着色。

公开(公告)号：US5225594A

公开(公告)日：1993-07-06

申请号：US759468

申请日：1991-09-13

申请人： Yoshikazu Shima ,  Takafumi Abe ,  Hirofumi Higuchi

发明人： Yoshikazu Shima ,  Takafumi Abe ,  Hirofumi Higuchi

IPC分类号： B01J23/34 ,  B01J23/72 ,  B01J23/755 ,  C07B61/00 ,  C07C51/377 ,  C07C57/04 ,  C07C57/065 ,  C07C67/20

CPC分类号： C07C51/377 ,  C07C67/20 ,  Y02P20/582

摘要： 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 obtained in step (II) with methyl formate or with methanol and carbon monoxide to form methyl .alpha.-hydroxyisobutyrate and formamide; (IV) hydrolyzing the methyl .alpha.-hydroxyisobutyrate obtained in step (III) to form .alpha.-hydroxyisobutyric acid; (V) dehydrating the .alpha.-hydroxyisobutyric acid obtained in step (IV) to form methacrylic acid; and (VI) dehydrating the formamide separated from the products obtained in step (III) to form prussic acid and recycling the prussic acid to step (I) as a starting material. The process is capable of producing methacrylic acid from readily available starting materials with a high yield and selectivity, without forming undesirable by-product or waste materials, such as ammonium sulfate.

公开(公告)号：US20130303775A1

公开(公告)日：2013-11-14

申请号：US13996759

申请日：2011-12-22

申请人： Yutaka Kanbara ,  Takafumi Abe ,  Norio Fushimi

发明人： Yutaka Kanbara ,  Takafumi Abe ,  Norio Fushimi

IPC分类号： C07B41/02 ,  C07D213/30 ,  C07C29/00

CPC分类号： C07B41/02 ,  B01J23/04 ,  C07C29/00 ,  C07C29/09 ,  C07C29/128 ,  C07C41/26 ,  C07C213/00 ,  C07D213/30 ,  C07C33/18 ,  C07C33/22 ,  C07C33/26 ,  C07C33/20 ,  C07C43/23 ,  C07C33/46 ,  C07C215/68

摘要： A process of production of an aromatic alcohol or a heterocyclic aromatic alcohol, containing a step of reacting an aromatic amine or a heterocyclic aromatic amine having an aromatic ring or a heterocyclic aromatic ring having thereon at least one substituent —CHR1NR2R3 (wherein R1, R2 and R3 each independently represent hydrogen, an alkyl group having from 1 to 4 carbon atoms, or a benzyl group), with an alcohol, in the presence of a basic catalyst.

摘要翻译： 一种制备芳族醇或杂环芳族醇的方法，其包括使芳族胺或具有芳环的杂环芳族胺或其上具有至少一个取代基的杂环芳族环的芳基胺反应的步骤，其中R1，R2和 R 3各自独立地表示氢，具有1至4个碳原子的烷基或苄基）与醇在碱性催化剂的存在下反应。