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1. 发明专利

JPH07165741A PURIFICATION OF GLYCIDYL METHACRYLATE 失效
公开(公告)号：JPH07165741A
公开(公告)日：1995-06-27
申请号：JP31168393
申请日：1993-12-13
申请人： DAICEL CHEM
发明人： YOKOTA SHIGERU , TAGAWA KUNIO
IPC分类号： C07D301/32 , C07B63/04 , C07D303/16
摘要： PURPOSE:To obtain a high-purity purified compound in a high yield while inhibiting polymerization of glycidyl methacrylate by neutralizing glycidyl methacrylate with a sulfone groupcontaining compound, reducing high-boiling compounds and subsequently purifying it. CONSTITUTION:An ester interchange reaction is conducted between glycidol and methyl methacrylate in the presence of a base catalyst (e.g. lithium acetate) to synthesize glycidyl methacrylate (hereinafter abbreviated GMA). The resultant GMA is neutralized with a sulfone group-containing compound (preferably p- toluenesulfonic acid) of the formula (R is an alkyl or an aromatic group) and, after reducing high-boiling compounds, it is purified. The removal of generated neutralized salts and high-boiling compounds is carried out preferably by adding a sulfone group-containing compound while vigorously stirring unneutralized crude GMA and subsequently distilling it under 1 to 30Torr using an evaporator having a short residence time, e.g. a film evaporator. In addition, purification of the neutralized GMA is preferrably carried out by using a distillation column low in pressure loss and having low actual steps.

2. 发明专利

JPH05239043A 失效
公开(公告)号：JPH05239043A
公开(公告)日：1993-09-17
申请号：JP25642391
申请日：1991-10-03
申请人： DAICEL CHEM
发明人： YOKOTA SHIGERU , TAGAWA KUNIO
IPC分类号： B01D3/36 , C07C51/46 , C07C53/08 , C07D301/14 , C07D301/32 , C07D303/04
摘要： PURPOSE:To efficiently separate acetic acid in the crude reaction liquor from cyclohexene oxide produced by direct oxidation using an organic peracid and through a simple process on an industrial scale. CONSTITUTION:Cyclohexene is epoxidized with peracetic acid to produce cyclohexene oxide. Then, the resulting acetic acid and the cyclohexene are separated from each other from the crude reaction liquor by distillation in the presence of a compound azeotropic with the acetic acid. Owing to the use of this compound, cyclohexene oxide can efficiently be separated and purified, which has been very hard to separate from acetic acid by distillation because of its small difference in boiling point from acetic acid and its high reactivity therewith.

3. 发明专利

JPH0564622B2 失效
公开(公告)号：JPH0564622B2
公开(公告)日：1993-09-16
申请号：JP1609685
申请日：1985-01-30
申请人： DAICEL CHEM
发明人： MATSUOKA KAZUYUKI , TAGAWA KUNIO
IPC分类号： C07C45/58 , B01J21/12 , C07B61/00 , C07C45/00 , C07C47/228 , C07C67/00

4. 发明专利

JPH0516419B2 失效
公开(公告)号：JPH0516419B2
公开(公告)日：1993-03-04
申请号：JP4797985
申请日：1985-03-11
申请人： DAICEL CHEM
发明人： MATSUOKA KAZUYUKI , TAGAWA KUNIO
IPC分类号： C07C45/51 , B01J21/00 , B01J21/06 , C07B61/00 , C07C45/00 , C07C45/48 , C07C49/04 , C07C49/303 , C07C49/385 , C07C67/00

5. 发明专利

JPS59141534A Production of phenylacetaldehyde 失效
标题翻译：苯乙酮的生产
公开(公告)号：JPS59141534A
公开(公告)日：1984-08-14
申请号：JP1674683
申请日：1983-02-03
申请人： Daicel Chem Ind Ltd
发明人： MATSUOKA KAZUYUKI , TAGAWA KUNIO
IPC分类号： C07C47/228 , B01J27/00 , B01J27/02 , B01J27/053 , C07B61/00 , C07C45/00 , C07C45/58 , C07C45/67 , C07C67/00
CPC分类号： Y02P20/52
摘要： PURPOSE: To carry out the catalytic reaction in isomerizing styrene oxide in the vapor phase by the reaction to obtain the titled substance, by using a highly active catalyst consisting of a sulfate of Mn, Fe, Co or Ni without showing deterioration in activity for a long time.
CONSTITUTION: Styrene oxide is isomerized to give the titled substance. In the process, MnSO
4 , Fe
2 (SO
4 )
3 , FeSO
4 , CoSO
4 or NiSO
4 is used as a catalyst. The above-mentioned metallic sulfate may have water of crystallization, and supported preferably on a carrier, e.g. molten alumina, silicon carbide, silica or pumice to increase the mechanical strength. The amount of the metallic sulfate to be supported is 2W95wt%. The catalyst is prepared by sprinkling an aqueous solution of the metallic sulfate on a heated carrier, drying the impregnated carrier, and calcining the dried carrier at a high temperature (300W500°C), etc.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：通过反应进行气相异构化苯乙烯氧化物的催化反应，得到标题物质，通过使用由Mn，Fe，Co或Ni的硫酸盐组成的高活性催化剂，而不会使活性降低长时间。构成：将苯乙烯氧化物异构化得到标题物质。在此过程中，使用MnSO4，Fe2（SO4）3，FeSO4，CoSO4或NiSO4作催化剂。上述金属硫酸盐可以具有结晶水，优选负载在载体上。熔融氧化铝，碳化硅，二氧化硅或浮石以增加机械强度。负载的金属硫酸盐的量为2-95重量％。通过将金属硫酸盐水溶液喷洒在加热的载体上，干燥浸渍的载体并在高温（300-500℃）等下煅烧干燥的载体）来制备催化剂。

6. 发明专利

JPH107628A PRODUCTION OF 1-(META-CHLOROPHENYL)-2-AMINOETHANOL 失效
公开(公告)号：JPH107628A
公开(公告)日：1998-01-13
申请号：JP17713096
申请日：1996-06-17
申请人： DAICEL CHEM
发明人： FUJIWARA KEISUKE , TAKABE AKIHISA , TAGAWA KUNIO
IPC分类号： C07C213/04 , C07C215/30
摘要： PROBLEM TO BE SOLVED: To provide a method for producing 1-(m-chlorophenyl)-2-aminoethanol useful as an intermediate for a medicine or an agrochemical, while suppressing a by-product such as an isomer difficult in removing, in high yield and efficiency by reacting ammonia with m-chlorostyrene oxide in the presence of a specific amount of water. SOLUTION: (A) Ammonia is reacted with (B) m-chlorostyrene oxide in the presence of (C) 0.01-10 times weight of water based on the component B and optionally in 10-90wt.% solvent such as methanol, ethanol, dioxane or acetonitrile based on the total charge. Moreover, preferably, the reaction is performed by using 25-90wt.% component A based on the total charge at 0-200 deg.C under 0-50kgf/cm G pressure for 2-6hr.

7. 发明专利

JPH0564623B2 失效
公开(公告)号：JPH0564623B2
公开(公告)日：1993-09-16
申请号：JP15049585
申请日：1985-07-09
申请人： DAICEL CHEM
发明人： MATSUOKA KAZUYUKI , TAGAWA KUNIO
IPC分类号： C07C47/228 , B01J21/00 , B01J21/12 , C07B61/00 , C07C45/00 , C07C45/58 , C07C67/00

8. 发明专利

JPH04306228A PRODUCTION OF POLYOXYTETRAMETHYLENE GLYCOL 失效
公开(公告)号：JPH04306228A
公开(公告)日：1992-10-29
申请号：JP7188291
申请日：1991-04-04
申请人： DAICEL CHEM
发明人： YOKOTA SHIGERU , MORI MISAO , TAGAWA KUNIO
IPC分类号： C08G65/20 , C08G65/02
摘要： PURPOSE:To produce polyoxytetramethylene glycol from tetrahydrofuran using a solid acid catalyst capable of simply carrying out recovery and recycle and readily regenerating as a polymerization catalyst. CONSTITUTION:Production of polyoxytetramethylene glycol comprising polymerizing tetrahydrofuran in the presence of a solid acid catalyst consisting of a complex metal oxide selected from a group of a metal oxide expressed by the general formula MxOy (X and Y are integer of 1 or 3) and carboxylic acid anhydride. It is made possible to efficiently produce polyoxytetramethylene glycol in high yield by using the solid acid catalyst capable of simply carrying out recovery and recycle and more readily regenerating as the polymerization catalyst.

9. 发明专利

JPH01270934A REACTION METHOD 失效
公开(公告)号：JPH01270934A
公开(公告)日：1989-10-30
申请号：JP9792888
申请日：1988-04-20
申请人： DAICEL CHEM
发明人： MATSUOKA KAZUYUKI , TAGAWA KUNIO
IPC分类号： B01J8/02 , B01J47/02 , C07B31/00 , C07B61/00 , C07C27/00 , C07C27/02 , C07C67/00
摘要： PURPOSE:To improve reaction efficiencies by packing ion-exchange resins in the upper section and beads having specific gravity larger than that of the resins in the lower section to effect reaction in an upward-flow type fixed-bed liquid-phase flow-reaction method using ion-exchanging resins as a catalyst. CONSTITUTION:Raw materials are supplied through a pipe 3-3 provided at the lower part of a reactor A, and reaction products are taken out from the upper part thereof, wherein ion-exchange resins 2-2 are used as a catalyst. In such upward-flow type fixed-bed liquid-phase flow-reaction method, ion- exchange resins 2-2 are packed in the upper section of the reactor and beads having specific gravity larger than that of the ion-exchange resins are packed in the lower section thereof to effect reaction. As a result, an efficient production of intended products can be realized in a small quantity of ion-exchange resins, thereby achieving miniaturization of device.

10. 发明专利

JPS6212736A PRODUCTION OF PHENYLACETALDEHYDE 失效
公开(公告)号：JPS6212736A
公开(公告)日：1987-01-21
申请号：JP15049585
申请日：1985-07-09
申请人： DAICEL CHEM
发明人： MATSUOKA KAZUYUKI , TAGAWA KUNIO
IPC分类号： C07C47/228 , B01J21/00 , B01J21/12 , C07B61/00 , C07C45/00 , C07C45/58 , C07C67/00
摘要： PURPOSE:To produce the titled compound useful as an intermediate for agricultural chemicals, pharmaceuticals, perfumes, artificial sweeteners, etc., in high purity, by isomerizing styrene oxide at a high temperature in a reactor filled with a catalyst suspended in an organic solvent having high boiling point, and distilling in a distillation column connected directly to the reactor. CONSTITUTION:Styrene oxide is supplied in vapor state or liquid state to the bottom of a reactor filled with an organic solvent having high boiling point (e.g. liquid paraffin) containing suspended catalyst such as synthetic silica-alumina and made to react at 160-220 deg.C under reduced pressure of 5-50mmHg at a temperature maintained above the temperature to evaporate the starting raw material and the reaction product until the conversion of the raw material reaches >=99.5%. A part of the organic solvent having high boiling point is extracted continuously or intermittently from the reactor and the reactor is replenished with the corresponding amount of regenerated or fresh solvent and catalyst. The objective compound can be obtained from the distillation column connected directly to the reactor. EFFECT:The polymerization loss of the objective compound having high reactivity can be suppressed and a colorless product having sufficiently high commercial value can be produced.

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